Lighting fixture and luminaire

Abstract

To provide a lighting fixture which has no risk of damaging a light source in assembly or in use, and to provide a luminaire.SOLUTION: A lighting fixture includes: a light source having a light emitting element and a substrate; a pedestal having a long pedestal main part in which the light source is held, a pair of pedestal side parts provided at each of side edge parts in the shorter direction of the pedestal main part, and a pair of engagement parts provided at a tip part at each of the pair of pedestal side parts; and a storage part having a long outer shell for covering the light source, a mounting part provided at each of side edge parts in the shorter direction of the outer shell and engaged with the pair of engagement parts, and a pair of light distribution control parts provided sandwiching an optical axis of the light source so as to be along the longer direction of the outer shell. Each of the pair of light distribution control parts is formed in such a manner that, on a vertical cross section with respect to the longer direction of the outer shell, a distance dimension between tip parts which are end parts on the pedestal side is shorter than a distance dimension between base end parts which are end parts on the outer shell side.SELECTED DRAWING: Figure 17

Description

[Technical field]

[0001] The present disclosure relates to a lighting device and an illumination apparatus, and more particularly to control of light distribution. [Background technology]

[0002] Conventionally, methods for improving illuminance in a specific direction, such as the direction directly below the light source, have been known, such as attaching a reflective member for light distribution control to the main body of the fixture to which the lighting fixture is attached, or arranging a condensing lens to cover the light source, etc. However, such methods can increase costs due to the light distribution control, and can also be a factor preventing the sharing of parts.

[0003] In order to solve these problems, a lighting fixture has been proposed that uses a reflector to increase the amount of light emitted forward and concentrate the light energy, as a configuration that can be manufactured easily and at low cost (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2018 / 146781 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in some of the lamps disclosed in Patent Document 1, the reflector extends from a part of the translucent cover so as to contact or be close to the electronic board. In the lamp of this configuration, the attitude of the main body base inside the translucent cover, such as the angle of rotation, is determined by the relationship between the tip of the reflector and the electronic board, the relationship between the tip of the reflector and the LED line light source, and the relationship between the main body base and the inner circumferential surface of the translucent cover. For this reason, the lamp of Patent Document 1 may damage the electronic board and the LED line light source, for example, by contact with the reflector when assembled or used.

[0006] The present disclosure is devised to solve the above-mentioned problems, and provides a lamp and lighting device that does not pose a risk of damaging the light source during assembly or use. [Means for solving the problem]

[0007] The lighting fixture of the present disclosure comprises a light source having a light-emitting element and a substrate on which the light-emitting element is mounted, a base having a long base main portion on which the light source is held, a pair of base side portions provided on each of the side edges in the short direction of the base main portion, and a pair of engaging portions provided on each of the pair of base side portions at a tip portion opposite the base main portion, and a storage portion having a long outer shell covering the light source, an attachment portion provided on each of the side edges in the short direction of the outer shell and engaging with the pair of engaging portions, and a pair of light distribution control portions provided along the longitudinal direction of the outer shell with the optical axis of the light source between them, and each of the pair of light distribution control portions is formed so that, in a cross section perpendicular to the longitudinal direction of the outer shell, the distance between the tip ends, which are the ends on the base side, is smaller than the distance between the base ends, which are the ends on the outer shell side.

[0008] The lighting device according to the present disclosure includes a lighting fixture having the above-described configuration and an appliance that is attached to a construction section and to which the lighting fixture is attached. Effect of the Invention

[0009] The lamp of the present disclosure includes a pair of light distribution control sections that stand up from the outer casing toward the base with the peripheral portion of the emission section as a base end, and are arranged side by side with the optical axis between them so that the tip end opposite the base end is positioned facing the base and away from the light source. Therefore, the lamp of the present disclosure can prevent contact between the tip end of the light distribution control section and the light source during assembly or use, and there is no risk of damaging the light source. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view illustrating a lighting device according to a first embodiment. [Diagram 2] FIG. 2 is an exploded perspective view illustrating a main part of the lighting device according to the first embodiment. [Diagram 3] 1 is a first cross-sectional view illustrating a main part of a lighting fixture according to a first embodiment. [Figure 4] FIG. 2 is a perspective view showing a housing portion of the lighting fixture according to the first embodiment. [Diagram 5] 4 is a second cross-sectional view illustrating a main part of the lighting device according to the first embodiment. FIG. [Figure 6] 4 is a third cross-sectional view illustrating a main part of the lighting device according to the first embodiment. FIG. [Figure 7] FIG. 2 is a perspective view showing a base of the lighting fixture according to the first embodiment. [Figure 8] 11 is a cross-sectional view illustrating a main part of a lighting device according to a second embodiment. FIG. [Figure 9] 11 is a cross-sectional view illustrating a main part of a lighting device according to a third embodiment. FIG. [Figure 10] 13 is a first cross-sectional view illustrating a main part of a lighting device according to embodiment 4. FIG. [Figure 11] 13 is a second cross-sectional view illustrating a main part of the lighting device according to the fourth embodiment. FIG. [Figure 12] 13 is a cross-sectional view illustrating a main part of a lighting fixture according to embodiment 5. FIG. [Figure 13] 13 is a cross-sectional view illustrating a main part of a lighting fixture according to a sixth embodiment. FIG. [Figure 14] 13 is a cross-sectional view illustrating a main part of a lighting device according to a seventh embodiment. FIG. [Figure 15] 13 is a cross-sectional view for explaining a main part of a lighting fixture according to an eighth embodiment. FIG. [Figure 16] FIG. 13 is a perspective view illustrating a lighting device according to a ninth embodiment. [Figure 17] 13 is a cross-sectional view illustrating a main part of a lighting fixture according to a ninth embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The following describes the lighting fixture 3 and the lighting device 1 according to the embodiment with reference to the drawings. In the following drawings including FIG. 1, the relative dimensional relationship and shape of each component may differ from the actual one. In the following drawings, the same reference numerals are used to denote the same or equivalent items, and this is common throughout the entire specification. In addition, to facilitate understanding, terms indicating directions (e.g., up, down, left, right, front, rear, front and back, etc.) are used as appropriate, but these notations are for the convenience of explanation and do not limit the arrangement, direction or orientation of devices, equipment, or parts.

[0012] Embodiment 1 [Lighting equipment 1] 1 is a perspective view illustrating a lighting device 1 according to embodiment 1. The lighting device 1 is installed at a position where it can illuminate an illumination space, and illuminates the illumination space. The illumination space is a space in which the lighting device 1 is installed, and means, for example, a residential space, a space such as a warehouse, a space such as a building or a public facility, a shared space such as an elevator or a corridor, or a space inside a vehicle such as a train or a ship.

[0013] The lighting device 1 comprises a fixture 2 and a long luminaire 3 that can be detachably attached to the fixture 2. The lighting device 1 is attached to a structure 9 such as a ceiling or a wall with the luminaire 3 facing toward the interior of the room. When the luminaire 3 is turned on, the lighting device 1 emits light from the luminaire 3 to illuminate the lighting space.

[0014] The lighting device 1, the fixture 2, and the luminaire 3 are all long and narrow. In the following description, the longitudinal direction of the lighting device 1 is the X-axis direction, the transverse direction relative to the longitudinal direction is the Y-axis direction, and the direction perpendicular to each of the longitudinal and transverse directions is the Z-axis direction. The side of a construction part 9 such as a ceiling on which the lighting device 1 is attached is the upward direction Z1, and the side opposite the upward direction Z1 and from which the lighting device 1 emits light is the downward direction Z2. The downward direction Z2 is, for example, the direction of gravity.

[0015] [Apparatus 2] The fixture 2 holds the attached lighting fixture 3 and supplies power to the lighting fixture 3 attached to the fixture 2. The fixture 2 includes a fixture body 20, a pair of sockets 21, and a lighting device 22.

[0016] The fixture body 20 is attached to a construction part 9 such as a ceiling using fasteners such as bolts. The fixture body 20 is formed in a long box shape and is hollow inside. A pair of sockets 21 is provided on the side of the fixture body 20 opposite the side facing the construction part 9, on the side on which the lighting fixture 3 is attached. Each of the pair of sockets 21 protrudes from the fixture body 20.

[0017] One socket 21 is provided near one end of the fixture body 20 in the longitudinal direction (X-axis direction), and the other socket 21 is provided near the other end of the fixture body 20 in the longitudinal direction (X-axis direction). The distance between the pair of sockets 21 is approximately equal to the longitudinal length of the lamp 3. By attaching the lamp 3 between the pair of sockets 21, the lamp 3 is held by the pair of sockets 21. The socket 21 is a connector on the fixture 2 side for holding the lamp 3. The socket 21 is also electrically connected to the lamp 3 that it holds. The socket 21 is also a power supply terminal for supplying power to the lamp 3 attached to the fixture 2.

[0018] A lighting device 22 is housed inside the fixture body 20. The lighting device 22 is a power supply device that converts power supplied from an external power source into a voltage or current suitable for the lighting fixture 3. In other words, the lighting device 22 generates lighting power to be supplied to a light source 60 (see FIG. 2 ), such as a light-emitting element 61. The lighting device 22 is electrically connected to the socket 21, and supplies power to the lighting fixture 3 via the socket 21.

[0019] [Lighting 3] FIG. 2 is an exploded perspective view illustrating a main part of the lighting fixture 3 according to the first embodiment. FIG. 3 is a first cross-sectional view illustrating a main part of the lighting fixture 3 according to the first embodiment. The lighting fixture 3 is turned on by power supplied from the device 2. The lighting fixture 3 has a housing portion 13, a base 40, a seat 50, and a light source 60. The lighting fixture 3 according to the first embodiment is, for example, a straight tube LED lamp equipped with a G13 type base 40. The lighting fixture 3 can be used for general lighting purposes, as well as for showcase purposes or under-shelf purposes.

[0020] The lighting fixture 3 is attached to the fixture 2 so as to face the fixture body 20. In addition, in a direction (Z-axis direction) perpendicular to the longitudinal direction (X-axis direction) and lateral direction (Y-axis direction) of the lighting fixture 3, the side of the lighting fixture 3 from which light is emitted from the light source 60 is referred to as the emission side of the lighting fixture 3, and the side of the lighting fixture 3 opposite the emission side and facing the fixture body 20 is referred to as the fixture side of the lighting fixture 3.

[0021] (Housing section 13) FIG. 4 is a perspective view showing the storage section 13 of the lighting device 3 according to the first embodiment. The storage section 13 is a cover for the light source 60 described later. The storage section 13 is formed in a long, hollow cylindrical shape, and both ends in the longitudinal direction (X-axis direction) are open. The storage section 13 is attached to the base 50 described later. When the storage section 13 is attached to the base 50, the light source 60 and the base 50 are housed therein. The storage section 13 may be called a case that houses the light source 60 or a tube that houses the light source 60, in addition to a cover. The storage section 13 has an outer shell 30, a light distribution control section 31, and an attachment section 33.

[0022] (Outer Wall 30) The outer shell 30 of the storage section 13 is a part formed in a cylindrical shape in the storage section 13. As shown in Figs. 2 to 4, the outer shell 30 is formed in an elongated and hollow cylindrical shape. However, the shape of the outer shell 30 is not limited to a cylindrical shape. For example, the outer shell 30 may be a tube formed in a polygonal shape in a cross section perpendicular to the longitudinal direction (X-axis direction). Furthermore, the outer shell 30 formed in a cylindrical shape may be formed in a perfect circular shape in a cross section perpendicular to the longitudinal direction (X-axis direction), or may be formed in a shape other than a perfect circular shape, such as an egg shape, an oval shape, or an elliptical shape.

[0023] The outer shell 30 of the housing 13 accommodates the light source 60 and the base 50 therein. The inner periphery 300 of the outer shell 30 constitutes the surface facing the light source 60 arranged inside the outer shell 30. The outer periphery 301 of the outer shell 30 constitutes the surface facing the illumination space and not facing the light source 60. The outer shell 30 has end openings 302 at both ends in the longitudinal direction (X-axis direction). The end openings 302 are openings that connect the inside and outside of the outer shell 30.

[0024] The outer shell 30 of the housing 13 has translucency. The outer shell 30 may be formed, for example, from a transparent material, or may be formed from a material that diffuses light passing through the outer shell 30. The outer shell 30 is attached to the base 50 in a state where it covers the light source 60 so as to intersect with the optical axis of the light source 60.

[0025] The outer shell 30 of the housing 13 has an emission section 32. The emission section 32 is a portion of the outer shell 30 from which light emitted from the light source 60 is emitted. The emission section 32 is formed in the outer shell 30 between a pair of light distribution control sections 31, which will be described later. The emission section 32 is formed on the emission side of the lamp 3.

[0026] In a cross section perpendicular to the longitudinal direction of the outer casing 30, the angle between an imaginary line LA connecting the geometric center O of the outer casing 30 to one end 32a of the emission section 32 and an imaginary line LB connecting the geometric center O of the outer casing 30 to the other end 32b of the emission section 32 is defined as the light distribution angle θ. The light distribution angle θ is set to an angle smaller than the irradiation angle of the light source 60 itself.

[0027] The reflectance of the exit unit 32 is lower than the reflectance of the inner surface 312 of the light distribution control unit 31. The reflectance is an optical reflectance in the visible band. The exit unit 32 has a light transmittance higher than at least the inner surface 312 of the light distribution control unit 31. The light transmittance is an optical transmittance in the visible band. The exit unit 32 transmits light emitted from the light source 60 and directly emits it, and also transmits light emitted from the light source 60 and whose light distribution has been controlled by the light distribution control unit 31 and emits it. That is, the light emitted from the light source 60 and whose light distribution has been controlled by the light distribution control unit 31 is irradiated from the exit unit 32 to the illumination space.

[0028] The material of the emission section 32 is a material having translucency. For example, a translucent resin such as polycarbonate or acrylic resin can be used as the material of the emission section 32. The material of the emission section 32 may be a highly light-diffusing resin material in which a translucent resin such as polycarbonate is used as a base material and a diffusing agent having a refractive index different from that of the base material is mixed at a predetermined weight ratio. When the emission section 32 is made of a highly light-diffusing resin material, it has a light diffusing property that diffuses light. Note that the above-mentioned material of the emission section 32 is an example, and the material of the emission section 32 is not limited to the above-mentioned material.

[0029] (Light distribution control unit 31) The luminaire 3 employs a light distribution control unit 31 integrated with the housing 30 as light distribution control in place of conventional control for improving illuminance in a specific direction. Conventional control for improving illuminance in a specific direction includes, for example, a method of attaching a reflective member for light distribution control to the fixture body 20 to which the luminaire is attached, or a method of arranging a condenser lens for narrow light distribution so as to cover the light source.

[0030] The light distribution control unit 31 controls the light distribution of the light emitted from the light source 60 in the lighting fixture 3. The light distribution control unit 31 controls the direction of the light emitted from the light source 60 so as to emit the light from the light source 60 from the emission unit 32. That is, the pair of light distribution control units 31 distribute the light emitted from the light source 60 toward the emission unit 32 by reflection, and emit the light from the emission unit 32 with the light distribution angle θ set to an angle smaller than the irradiation angle of the light source 60.

[0031] The light distribution control units 31 stand up from the outer case 30 and are arranged side by side in pairs with the optical axis of the light source 60 between them. The light distribution control units 31 stand up from the inner periphery 300 of the outer case 30 as a base end 310. The light distribution control units 31 extend from the outer case 30 toward the inside of the outer case 30 in a cross section perpendicular to the longitudinal direction (X-axis direction) of the outer case 30. More specifically, each of the pair of light distribution control units 31 extends from the outer case 30 toward the base 50 in a cross section perpendicular to the longitudinal direction (X-axis direction) of the outer case 30.

[0032] In a cross section perpendicular to the longitudinal direction (X-axis direction) of outer shell 30, light distribution control section 31 has base end 310 at one end and tip end 311 at the other end.

[0033] The base end 310 is one end of the light distribution control section 31 and constitutes the peripheral portion of the emission section 32. The peripheral portion of the emission section 32 is one end 32a of the emission section 32 and the other end 32b of the emission section 32 in the short direction (Y-axis direction) in a cross section perpendicular to the longitudinal direction (X-axis direction) of the outer case 30. The peripheral portion of the emission section 32 extends along the longitudinal direction (X-axis direction) of the outer case 30. The base end 310 is a connection portion between the light distribution control section 31 and the inner peripheral portion 300 of the outer case 30, and is an end portion on the outer case 30 side. The base end 310 is also a root portion of the light distribution control section 31.

[0034] The tip portion 311 is the other end of the light distribution control portion 31, and is disposed in the accommodation portion 13 at a distance from the light source 60, and faces the base 50. The tip portion 311 is the end portion of the light distribution control portion 31 on the base 50 side. The tip portion 311 faces the base 50 in a direction (Z-axis direction) perpendicular to the longitudinal direction (X-axis direction) and lateral direction (Y-axis direction) of the lighting fixture 3. The tip portion 311 may be in contact with the base 50 or may be spaced apart from the base 50. The tip portion 311 restricts movement of the base 50 in the rotational direction.

[0035] The tip 311 of the light distribution control section 31 is disposed so as to face any part of the base main section 51 other than the light source attachment section 510 described later. In other words, the tip 311 of the light distribution control section 31 is disposed outside the light source 60 in the direction intersecting the optical axis (short side direction), and is disposed outside the substrate 62.

[0036] Considering the purpose of increasing the illuminance directly below the light source 60 and the luminaire 3, in the short direction (Y-axis direction), the tip portion 311 is not positioned outside a reference line passing through the base end portion 310 along the optical axis.

[0037] In addition, when the light emitted from the light source 60 so as to spread outward is attenuated and the light close to the optical axis of the light source 60 is selectively utilized, in the short direction (Y-axis direction), the tip end 311 is positioned outside the reference line passing through the base end 310 along the optical axis.

[0038] The light distribution control section 31 is formed so as to extend over the entire longitudinal direction of the accommodating section 13. The light distribution control section 31 is formed in a plate shape so as to extend along the longitudinal direction (X-axis direction) of the outer case 30. The light distribution control section 31 has an inner surface section 312 and an outer surface section 313. The inner surface section 312 constitutes the surface on the side on which the optical axis is formed inside the outer case 30. The inner surface section 312 may be a flat surface, a curved surface, or a combination of a flat surface and a curved surface. The outer surface section 313 constitutes the surface on the opposite side to the side on which the optical axis is formed inside the outer case 30.

[0039] The light distribution control section 31 is formed so that at least the reflectance of the inner surface 312 of the light distribution control section 31 is higher than the reflectance of the exit section 32 of the outer case 30. In other words, the light distribution control section 31 is formed so that at least the light transmittance of the inner surface 312 of the light distribution control section 31 is lower than the light transmittance of the exit section 32 of the outer case 30.

[0040] The material of the inner surface portion 312 may be a highly reflective resin material in which a material for improving reflectance, such as titanium dioxide, is mixed in a predetermined weight ratio with a resin such as polycarbonate, acrylic resin, or polybutylene terephthalate as a base material. Note that the above-mentioned material of the inner surface portion 312 is an example, and the material of the inner surface portion 312 is not limited to the above-mentioned material.

[0041] Specifically, the luminaire 3 may have the light distribution control section 31 made thicker than the emission section 32, making it difficult for the light emitted from the light source 60 to pass through the light distribution control section 31. Alternatively, the luminaire 3 may use a highly reflective resin mixed with a highly reflective material as the material for the light distribution control section 31, thereby efficiently reflecting the light emitted from the light source 60.

[0042] The housing section 13 may have a laminated structure made of multiple layers using different materials. The laminated structure may be formed by multi-color molding using two or more different materials. In order to increase the reflectance and light distribution control, it is preferable to use a highly reflective resin with a thickness that makes it difficult for transmission to occur as the material for the light distribution control section 31. However, when it is desired to keep costs low or when a low control angle is acceptable, the same resin as the translucent part may be used for the light distribution control section 31, and the light distribution control section 31 may control the light distribution.

[0043] Furthermore, the light distribution control section 31 can further increase the effect of light distribution control by providing a mirror finish to the surface of the inner surface section 312 of the light distribution control section 31. Therefore, by providing a mirror finish to the surface of the inner surface section 312 of the luminaire 3, the illuminance directly below the light source 60 and the luminaire 3 can be further increased.

[0044] The light distribution control section 31 may be formed using a common, not completely transparent, material for the emission section 32. For example, by using a diffusely transparent material for the light distribution control section 31 and the emission section 32, the luminaire 3 can perform light distribution control such that a portion of the light emitted from the light source 60 and reflected by the light distribution control section 31 is emitted from the emission section 32 into the lighting space. The luminaire 3 can be manufactured inexpensively by forming the light distribution control section 31 and the emission section 32 using a common material.

[0045] Fig. 5 is a second cross-sectional view illustrating a main part of the luminaire 3 according to embodiment 1. Fig. 6 is a third cross-sectional view illustrating a main part of the luminaire 3 according to embodiment 1. Fig. 3 shows the luminaire 3 with a light distribution angle θ of 140°. Fig. 5 shows the luminaire 3 with a light distribution angle θ of 90°. Fig. 6 shows the luminaire 3 with a light distribution angle θ of 45°. The relationship between the light distribution control unit 31 and the light distribution angle θ will be described with reference to Figs. 3, 5 and 6.

[0046] The light distribution control section 31 is formed integrally with the outer casing 30 so as to satisfy the light distribution angle θ determined according to the product specifications. The light distribution angle θ is also an angle defined as the angle on the side of the emission section 32 between the geometric center O of the outer casing 30 and the base ends 310 of the pair of light distribution control sections 31. For the purpose of increasing the illuminance directly below the light source 60 and the lamp 3, it is desirable that the light distribution angle θ be defined within an angle range of 45°≦θ≦140°.

[0047] The angle between the light distribution control section 31 and the inner circumference 300 of the outer shell 30 is arbitrary. The angle between the light distribution control section 31 and the inner circumference 300 of the outer shell 30 may be an acute angle, a right angle, or an obtuse angle. In addition, the base end 310 of the light distribution control section 31 may be provided with a reinforcing section that is skirt-shaped, i.e., reverse tapered. The reinforcing section may be finished with a flat surface, a curved surface (fillet-shaped), or a shape that combines a flat surface and a curved surface.

[0048] (Mounting part 33) When the outer shell 30 is attached to the base 50, the attachment portion 33 engages with an engagement portion 53 formed on the base 50. When the attachment portion 33 and the engagement portion 53 are engaged with each other, the attachment portion 33 restricts the movement of the engaged base 50 in the rotational direction.

[0049] The mounting portion 33 is formed so as to extend over the entire longitudinal direction of the storage portion 13. The mounting portion 33 is formed at a position offset toward the fixture side from the axis of the center O parallel to the longitudinal direction of the storage portion 13. The mounting portion 33 is formed on the opposite side to the base end portion 310 of the light distribution control portion 31 with respect to the geometric center along the optical axis direction.

[0050] The mounting portion 33 has a first mounting piece 330 and a second mounting piece 331. When the outer shell 30 is mounted on the base 50, the first mounting piece 330 is engaged with a first engagement piece 530 of the engagement portion 53 formed on the base 50. When the mounting portion 33 and the engagement portion 53 are engaged, the first mounting piece 330 abuts against the first engagement piece 530 to restrict the rotational movement of the engaged base 50. When the outer shell 30 is mounted on the base 50, the second mounting piece 331 is engaged with a second engagement piece 531 of the engagement portion 53 formed on the base 50. When the mounting portion 33 and the engagement portion 53 are engaged, the second mounting piece 331 abuts against the second engagement piece 531 to restrict the rotational movement of the engaged base 50.

[0051] (40 cap) Next, the base 40 will be described with reference to Fig. 2. The base 40 is attached to both ends of the storage section 13 as shown in Fig. 2. The base 40 can be selected according to the intended use from a G13 type, a GX16-t5 type, a type that does not have a base terminal 42 but has an output wire, and the like. The base 40 includes a base housing 41 and a base terminal 42.

[0052] The base housing 41 is made of, for example, an insulating resin material. However, if insulation between the base housing 41 and the base terminals 42 is ensured, the base housing 41 may be made of metal. The base housing 41 is attached to the outer casing 30 so as to cover the end opening 302 of the outer casing 30. In other words, the base 40 is a cover provided on both ends of the accommodation section 13.

[0053] The base housing 41 is formed in a cylindrical shape with a bottom. The base housing 41 includes a peripheral portion 411 that fits into an end of the outer case 30, and a bottom portion 410 that closes the end of the outer case 30. The bottom portion 410 forms the side surfaces of both ends of the lamp 3. The peripheral portion 411 stands up from the peripheral edge of the bottom portion 410 to form side walls.

[0054] A screw insertion hole 412, which is a through hole, is formed in the bottom 410 of the base housing 41. The shank of a screw 81 having a threaded groove is inserted into the screw insertion hole 412 and screwed into a screw fixing hole 540 of the base 50 described later, thereby fixing the base 40 to the base 50. Note that the base 40 may be fixed to the base 50 using a fixing member other than a screw, such as a rivet, instead of the screw 81, or the base 40 may be fixed to the base 50 by a method such as fitting or screwing without using a fixing member.

[0055] The base terminal 42 is made of, for example, a metal having electrical conductivity. The base terminal 42 may be plated to prevent oxidation. The base terminal 42 protrudes from the bottom 410 of the base 40. The base terminal 42 protrudes from both ends of the longitudinal direction (X-axis direction) of the lamp 3 and extends in the longitudinal direction (X-axis direction) of the lamp 3. The base terminal 42 is inserted into the socket 21 shown in FIG. 1. When the base terminal 42 of the base 40 is inserted into the socket 21, the lamp 3 is mechanically supported by the fixture 2 and electrically connected to the fixture 2. That is, the base terminal 42 is a connector on the lamp 3 side and also a power receiving end on the lamp 3 side.

[0056] (Pedestal 50) Fig. 7 is a perspective view showing the base 50 of the lighting device 3 according to the first embodiment. The base 50 will be described with reference to Figs. 2 and 7. The base 50 is a member to which the light source 60 is attached, and is a heat dissipation member that dissipates heat emitted from the light source 60. The base 50 is also a member for holding the light source 60 in the housing portion 13.

[0057] The base 50 is formed in an elongated shape along the longitudinal direction (X-axis direction) of the accommodation section 13, and has a base main part 51, a pair of base side parts 52, a pair of engagement parts 53, and a pair of screw fixing parts 54, which are integrated together. The base main part 51, the base side parts 52, the engagement parts 53, and the screw fixing parts 54 are formed to extend over the entire longitudinal direction (X-axis direction) of the base 50.

[0058] The base 50 functions as a heat sink that dissipates heat generated from the light source 60 via the outer casing 30 to the outside of the lamp 3. For this reason, it is preferable that the base 50 is made of a metal material that has excellent thermal conductivity and rigidity and a small linear thermal expansion coefficient. The base 50 is formed of, for example, aluminum. Furthermore, a highly reflective film having a higher reflectivity than the material of the base 50 may be formed on the surface of the base 50. The highly reflective film is, for example, a layer of white colored anodized aluminum.

[0059] The base main part 51 has a light source attachment part 510 to which the substrate 62 of the light source 60 is attached, and protruding parts 511 formed on both ends of the light source attachment part 510 in the short-side direction (Y-axis direction) of the base main part 51. In other words, the light source attachment part 510 is formed between the two protruding parts 511.

[0060] The light source attachment portion 510 is a portion formed in a concave shape in the base main portion 51. The light source attachment portion 510 is formed so as to extend over the entire longitudinal direction (X-axis direction) of the base 50. The light source attachment portion 510 is formed so as to be concave with respect to the emission side surface of the extension portion 511. The installation surface of the substrate 62 in the light source attachment portion 510 is formed in a flat shape. In the base main portion 51, a step is formed between the installation surface of the substrate 62 in the light source attachment portion 510 and the emission side surface of the extension portion 511.

[0061] When the base 50 is fixed inside the outer shell 30, the substrate 62 is installed on the surface located on the emission side of the light source attachment portion 510 as shown in Figs. 2 and 7. When the substrate 62 is arranged on the light source attachment portion 510, the light emitting element 61 of the light source 60 faces the emission side. The substrate 62 can be installed on the base 50 by bonding the substrate 62 to the base 50 with an adhesive member such as an adhesive or double-sided tape. Alternatively, the substrate 62 can be installed on the base 50 by forming a screw hole in the base 50 and fastening the substrate 62 to the base 50 with a screw. The method of fixing the substrate 62 to the base 50 is not limited to the above method.

[0062] 3, protruding portions 511 that protrude outward in the short-side direction are provided at both ends of the light source attachment portion 510 in the short-side direction (Y-axis direction). The protruding portions 511 are formed so as to extend over the entire length of the base 50.

[0063] When the base 50 is fixed inside the outer case 30, the tip of the overhanging portion 511 in the protruding direction faces the inner periphery 300 of the outer case 30. When the base 50 is fixed inside the outer case 30, the device-side surface of the overhanging portion 511 faces the second attachment piece 331, and the emission-side surface of the overhanging portion 511 faces the tip 311 of the light distribution control unit 31. In the thickness direction (Z-axis direction) of the base 50, a gap is formed between the overhanging portion 511 and a second engagement piece 531 of the engagement portion 53 described later.

[0064] At both ends of the light source attachment portion 510 in the short side direction (Y-axis direction), base side portions 52 protruding toward the fixture side are provided. An engagement portion 53 is provided at the tip of the base side portion 52. When the outer shell 30 is attached to the base 50, the engagement portion 53 engages with the attachment portion 33 formed in the storage portion 13. When the attachment portion 33 and the engagement portion 53 are engaged with each other, the engagement portion 53 restricts the movement of the engaged base 50 in the rotational direction.

[0065] The engagement portion 53 is formed in an area of ​​the base 50 where the light source 60 is not arranged. The engagement portion 53 is formed on the side where the light source 60 is not arranged, i.e., on the fixture side of the base 50. The engagement portion 53 is formed so as to extend over the entire longitudinal direction of the base 50.

[0066] When the base 50 is fixed inside the outer shell 30, the engagement portion 53 is disposed at a position offset toward the instrument side from the axis of the center O of the housing portion 13. Also, when the base 50 is fixed inside the outer shell 30, the engagement portion 53 is disposed along the inner periphery 300 of the outer shell 30.

[0067] The engaging portion 53 has a first engaging piece 530 and a second engaging piece 531. The tip of the first engaging piece 530 is formed in a shape that engages with the first mounting piece 330 of the mounting portion 33. Therefore, when the outer shell 30 is attached to the base 50, the first engaging piece 530 engages with the first mounting piece 330 of the mounting portion 33 formed in the accommodating portion 13. When the mounting portion 33 and the engaging portion 53 are engaged with each other, the first engaging piece 530 abuts against the first mounting piece 330 to restrict the movement of the engaged base 50 in the rotational direction.

[0068] The tip of the second engagement piece 531 is formed in a shape that engages with the second attachment piece 331 of the attachment portion 33. Therefore, when the outer shell 30 is attached to the base 50, the second engagement piece 531 engages with the second attachment piece 331 of the attachment portion 33 formed in the accommodating portion 13. When the attachment portion 33 and the engagement portion 53 are engaged with each other, the second engagement piece 531 abuts against the second attachment piece 331, thereby restricting the movement of the engaged base 50 in the rotational direction.

[0069] A pair of screw fixing parts 54 are provided on the surface of the light source attachment part 510 located on the fixture side so as to protrude towards the fixture side. A screw fixing hole 540 is formed between the screw fixing parts 54. The base 50 and the base 40 are fixed together by inserting a screw 81 inserted into a screw insertion hole 412 formed in the bottom part 410 of the base housing 41 into the screw fixing hole 540. In addition, when the base 40 is fixed to the base 50 with the base 50 fixed inside the outer case 30, the base 40 is fixed so as to cover the end of the outer case 30.

[0070] When the bases 40 are attached to both ends of the outer casing 30 as shown in Fig. 2 and Fig. 3, an inner lamp space 24 surrounded by the outer casing 30 and the bases 40 is formed inside the outer casing 30. Furthermore, when the base 50 is fixed inside the outer casing 30, the inner lamp space 24 is divided into four spaces by the light distribution control section 31 and the base 50. Of these four spaces, the space facing the light source 60 is referred to as the exit side space 25, and the remaining three spaces not facing the light source 60 are collectively referred to as the fixture side space 26. The exit side space 25 is surrounded by the inner periphery 300 of the outer casing 30, the inner surface section 312 of the light distribution control section 31, the base 50, and the base 40.

[0071] (light source 60) Next, the light source 60 will be described with reference to Figures 2 and 3. As shown in Figures 2 and 3, the light source 60 includes a light-emitting element 61 that emits light, and a long, flat board 62 on which the light-emitting element 61 is mounted. The light source 60 is disposed on the opposite side to the emission unit 32, with the center O of the storage unit 13 in the direction along the optical axis as a reference. The distance between the light source 60 and the emission unit 32 may be greater than or equal to the distance between the base ends 310 of the pair of light distribution control units 31.

[0072] The light emitting element 61 is an element that emits light from a light emitting surface, and a plurality of light emitting elements 61 are arranged along the longitudinal direction (X-axis direction) of the substrate 62. The light emitting element 61 is an LED (Light Emitting Diode). For example, the light emitting element 61 is a pseudo white LED that is packaged by disposing a phosphor that converts the wavelength of blue light into yellow light on an LED chip that emits blue light with a wavelength of 440 to 480 nm.

[0073] The number, arrangement positions, and type of the light emitting elements 61 are determined according to the application of the lighting device 3, and therefore the number, arrangement positions, and type of the light emitting elements 61 are not limited. For example, the light source 60 may use one long organic electroluminescence element (hereinafter referred to as organic EL element) as the light emitting element 61, the longitudinal length of which is approximately equal to the longitudinal length of the substrate 62. In this case, the light source 60 may be arranged such that the longitudinal direction of the light emitting element 61, which is an organic EL element, is parallel to the longitudinal direction of the substrate 62.

[0074] The light-emitting element 61 is mounted on a mounting surface 620 of the substrate 62. In addition, electronic components (not shown) such as diodes, capacitors, fuses, or resistors are mounted on the mounting surface 620 of the substrate 62, and a wiring pattern (not shown) may be provided to electrically connect each light-emitting element 61 to each electronic component. The light-emitting element 61 and each electronic component are electrically connected to the base terminal 42 via the wiring pattern. Power is supplied to the light-emitting element 61 from the lighting device 22 of the fixture 2 via the socket 21 and the base terminal 42, so that the light-emitting element 61 lights up.

[0075] An adhesive material is applied to the non-mounting surface 621 of the substrate 62. The substrate 62 is adhered and fixed to the light source attachment portion 510 of the base 50 using the adhesive material applied to the non-mounting surface 621. The non-mounting surface 621 of the substrate 62 constitutes the surface opposite to the mounting surface 620. The non-mounting surface 621 of the substrate 62 is the surface that is fixed to the light source attachment portion 510 of the base 50, and is also a heat transfer surface that transfers operating heat generated from the light source 60 to the base 50.

[0076] The material of the substrate 62 is selected from glass epoxy materials, paper phenol materials, composite materials, ceramic materials, or metal materials such as aluminum, taking into consideration material costs, design specifications, etc. Furthermore, the mounting surface 620 of the substrate 62 may be coated with a resist having a reflectance higher than the reflectance of the material of the substrate 62. The mounting surface 620 of the substrate 62 reflects the light generated from the light source 60.

[0077] Next, the light emitted from light source 60 will be described with reference to Fig. 3, Fig. 5, and Fig. 6. Fig. 3 shows a lamp 3 with a light distribution angle θ of 140°. In Fig. 3, the path of light emitted from light-emitting element 61 of light source 60, which is reflected once by light distribution control section 31 and emitted from emission section 32, is indicated by arrow a.

[0078] First, the light emitted from the light emitting element 61 of the light source 60 passes through the exit side space 25 and reaches the inner surface 312 of the light distribution control unit 31. Because the inner surface 312 of the light distribution control unit 31 is formed of a reflective material, most of the light that reaches the inner surface 312 of the light distribution control unit 31 is reflected by the inner surface 312 of the light distribution control unit 31 toward the exit unit 32. A part of the light reflected by the inner surface 312 of the light distribution control unit 31 reaches the exit unit 32 of the outer shell 30, as indicated by the arrow a in FIG.

[0079] Since the exit section 32 of the outer casing 30 is formed of a material having translucency, most of the light that reaches the exit section 32 passes through the exit section 32 and becomes irradiated light that is irradiated from the outer casing 30 to the outside of the luminaire 3. In addition to the light that reaches the exit section 32 directly from the light source 60, the luminaire 3 allows light reflected by the light distribution control section 31 to reach the exit section 32, thereby further increasing the amount of light directly below the light source 60 and the luminaire 3 and improving the illuminance directly below the light source 60 and the luminaire 3. When the exit section 32 of the outer casing 30 is formed of a highly light-diffusing resin material, the irradiated light is diffused at various angles, but this is not shown in FIG. 3.

[0080] Fig. 5 shows a lighting fixture 3 with a light distribution angle θ of 90°. In Fig. 5, the path of light emitted from light emitting element 61 of light source 60, which is reflected once by light distribution control section 31 and emitted from emission section 32, is indicated by arrow b.

[0081] First, the light emitted from the light emitting element 61 of the light source 60 passes through the exit side space 25 and reaches the inner surface 312 of the light distribution control unit 31. Because the inner surface 312 of the light distribution control unit 31 is formed of a reflective material, most of the light that reaches the inner surface 312 of the light distribution control unit 31 is reflected by the inner surface 312 of the light distribution control unit 31 toward the exit unit 32. A part of the light reflected by the inner surface 312 of the light distribution control unit 31 reaches the exit unit 32 of the outer shell 30, as indicated by the arrow b in FIG.

[0082] Since the emission section 32 of the outer casing 30 is made of a material having translucency, most of the light that reaches the emission section 32 passes through the emission section 32 and becomes irradiation light that is emitted from the outer casing 30 to the outside of the luminaire 3. In the luminaire 3 shown in FIG. 5, as indicated by the arrow b, light is converged toward the center of the emission section 32 in the short direction (Y-axis direction) compared to the luminaire 3 shown in FIG. 3. Therefore, the luminaire 3 shown in FIG. 5 can increase the amount of light directly below the light source 60 and the luminaire 3 compared to the luminaire 3 shown in FIG. 3, and can improve the illuminance directly below the light source 60 and the luminaire 3.

[0083] Fig. 6 shows a lighting fixture 3 with a light distribution angle θ of 45°. In Fig. 6, the path of light emitted from light emitting element 61 of light source 60, which is reflected once by light distribution control section 31 and emitted from emission section 32, is indicated by arrow c.

[0084] First, the light emitted from the light emitting element 61 of the light source 60 passes through the exit side space 25 and reaches the inner surface 312 of the light distribution control unit 31. Since the inner surface 312 of the light distribution control unit 31 is formed of a reflective material, most of the light that reaches the inner surface 312 of the light distribution control unit 31 is reflected by the inner surface 312 of the light distribution control unit 31. The light reflected by the inner surface 312 of the light distribution control unit 31 reaches the inner surface 312 of the light distribution control unit 31 that is disposed on the opposite side to the light distribution control unit 31 that reflected the light. Then, a part of the light that is reflected multiple times between the inner surfaces 312 of the pair of light distribution control units 31 reaches the exit unit 32 of the outer shell 30.

[0085] Since the emission section 32 of the outer casing 30 is made of a material having translucency, most of the light that reaches the emission section 32 passes through the emission section 32 and becomes irradiation light that is emitted from the outer casing 30 to the outside of the luminaire 3. In the luminaire 3 shown in FIG. 6, as shown by the arrow c, the light is further converged toward the center of the emission section 32 in the short direction (Y-axis direction) compared to the luminaire 3 shown in FIG. 5. Therefore, the luminaire 3 shown in FIG. 6 can further increase the amount of light directly below the light source 60 and the luminaire 3 compared to the luminaire 3 shown in FIG. 5, and can improve the illuminance directly below the light source 60 and the luminaire 3.

[0086] [Effects of the luminaire 3 and the lighting device 1] The luminaire 3 has a pair of light distribution control parts 31 arranged side by side with the optical axis between them, with the peripheral part of the emission part 32 as the base end 310, rising from the outer casing 30 towards the base 50, and with the tip part 311 on the opposite side of the base end 310 being spaced apart from the light source 60 and positioned facing the base 50. Therefore, the luminaire 3 can prevent the tip part 311 of the light distribution control part 31 from coming into contact with the light source 60 during assembly or use, and there is no risk of damaging the light source 60. Therefore, the luminaire 3 is not subject to the constraints of the usage environment, and can achieve long-term quality improvement.

[0087] The luminaire 3 also has a pair of light distribution control units 31 that stand up from the outer casing 30 and are arranged side by side with the optical axis of the light source 60 between them. The light distribution control unit 31 distributes the light emitted from the light source 60 toward the emission unit 32 by reflection, and causes the light to be emitted from the emission unit 32 at an angle that is set to be smaller than the irradiation angle of the light source 60. In addition to the light that reaches the emission unit 32 directly from the light source 60, the light reflected by the light distribution control unit 31 reaches the emission unit 32, so that the amount of light in a specific direction, such as a direction directly below the light source 60 and the luminaire 3, can be increased compared to a luminaire that does not have the light distribution control unit 31. Therefore, the luminaire 3 can improve the illuminance in a specific direction, such as a direction directly below the light source 60 and the luminaire 3. The luminaire 3 can perform light distribution control without relying on a reflecting member for light distribution control attached to the fixture body or a condensing lens for narrow light distribution. The luminaire 3 does not use a reflecting member for controlling light distribution attached to the fixture body, or a focusing lens for narrow light distribution, and therefore can be manufactured more inexpensively than when these are used.

[0088] Furthermore, for example, a luminaire having a configuration in which a reflector provided between the outer casing and the light source is attached to the substrate of the light source requires a manufacturing process to ensure the unity of the reflector and the substrate, and therefore has extremely low assembly properties and is not suitable for mass production. The tip 311 of the light distribution control section 31 of the luminaire 3 is disposed away from the light source 60. Therefore, the luminaire 3 does not require a manufacturing process to ensure the unity of the light source 60 and the light distribution control section 31, is easy to assemble, and is suitable for mass production.

[0089] Furthermore, the emission section 32 is formed between the pair of light distribution control sections 31 in the outer casing 30. In addition to the light that reaches the emission section 32 directly from the light source 60, the light reflected by the light distribution control section 31 reaches the emission section 32, so that the luminaire 3 can increase the amount of light in a specific direction, such as directly below the light source 60 and the luminaire 3, compared to a luminaire that does not have a light distribution control section 31. Therefore, the luminaire 3 can improve the illuminance in a specific direction, such as directly below the light source 60 and the luminaire 3.

[0090] Furthermore, the pair of light distribution control sections 31 have a higher reflectance of at least the inner surface section 312 on the optical axis side than the reflectance of the emission section 32. In addition to the light that reaches the emission section 32 directly from the light source 60, the light reflected by the light distribution control section 31 reaches the emission section 32, so that the lighting fixture 3 can increase the amount of light in a specific direction, such as directly below the light source 60 and the lighting fixture 3, compared to a lighting fixture that does not have a light distribution control section 31. Therefore, the lighting fixture 3 can improve the illuminance in a specific direction, such as directly below the light source 60 and the lighting fixture 3.

[0091] Furthermore, the pair of light distribution control sections 31 have a lower transmittance at least of the inner surface section 312 on the optical axis side than the transmittance of the exit section 32. In addition to the light that reaches the exit section 32 directly from the light source 60, the light reflected by the light distribution control section 31 reaches the exit section 32, so that the luminaire 3 can increase the amount of light in a specific direction, such as directly below the light source 60 and the luminaire 3, compared to a luminaire that does not have a light distribution control section 31. Therefore, the luminaire 3 can improve the illuminance in a specific direction, such as directly below the light source 60 and the luminaire 3.

[0092] Furthermore, the tip 311 of the light distribution control section 31 is disposed outward of the substrate 62 in the direction intersecting the optical axis (short side direction). By disposing the tip 311 of the light distribution control section 31 in this manner, there is no risk of the light distribution control section 31 damaging the light emitting element 61 and the substrate 62 when the lamp 3 is assembled or when the lamp 3 is used.

[0093] Furthermore, the light source 60 is disposed on the opposite side to the emission part 32 with respect to the center O of the housing part 13 in the direction along the optical axis. Therefore, the lamp 3 can increase the distance dimension between the emission part 32 and the light source 60 inside the housing part 13, thereby suppressing the graininess of the light emitted by the light-emitting element 61 that appears at the emission part 32 of the outer casing 30h.

[0094] Furthermore, the distance between the light source 60 and the emission section 32 may be greater than the distance between the base ends 310 of the pair of light distribution control sections 31. In this case, the lighting device 3 can increase the distance between the emission section 32 and the light source 60 inside the housing section 13, thereby suppressing the graininess of the light emitted by the light-emitting element 61 that appears at the emission section 32 of the outer casing 30h.

[0095] Furthermore, since the lighting device 1 includes the lighting fixture 3, the effects of the lighting fixture 3 described above can be achieved.

[0096] Embodiment 2 8 is a cross-sectional view illustrating a main part of a luminaire 3a according to embodiment 2. Components having the same functions and actions as those of the luminaire 3 according to embodiment 1 are given the same reference numerals and their description is omitted. The luminaire 3a according to embodiment 2 differs from the luminaire 3 in that the configurations of the light distribution control section 31a and the base 50a are different from the configurations of the light distribution control section 31 and the base 50 of the luminaire 3 according to embodiment 1. Therefore, the following description will focus on the configurations of the light distribution control section 31a and the base 50a.

[0097] The lighting fixture 3a has a housing portion 13a, a base 40, a seat 50a, and a light source 60. The housing portion 13a has an outer casing 30, a light distribution control portion 31a, and an attachment portion 33.

[0098] (Pedestal 50a) The base 50a is a member to which the light source 60 is attached, and is a heat dissipation member that dissipates heat generated from the light source 60. The base 50a is also a member for holding the light source 60 in the housing portion 13a.

[0099] The base 50a is formed in an elongated shape along the longitudinal direction (X-axis direction) of the storage section 13a, and includes a base main section 51, a pair of base side sections 52, a pair of engagement sections 53, a pair of screw fixing sections 54, and a pair of base lid sections 55, which are integrated together. The base main section 51, the base side sections 52, the engagement sections 53, the screw fixing sections 54, and the base lid sections 55 are formed to extend over the entire longitudinal direction (X-axis direction) of the base 50a. The base 50a differs from the base 50 of the first embodiment in that it includes the base lid section 55. The basic structure of the base 50a is the same as that of the base 50 of the first embodiment, except for the base lid section 55.

[0100] The pedestal lid portion 55 protrudes from the protruding portion 511 side toward the light source mounting portion 510 side, and covers a part of the emission portion 32 side of the light source mounting portion 510. A pair of pedestal lid portions 55 arranged side by side in the short side direction (Y-axis direction) are formed so that their tips in the protruding direction face each other. A gap is formed between the pedestal lid portion 55 and the installation surface of the substrate 62 of the light source mounting portion 510.

[0101] The base cover 55 faces a part of the mounting surface 620 of the substrate 62 in a state where the substrate 62 is attached to the light source attachment part 510, and covers a part of the mounting surface 620 of the substrate 62. In a state where the substrate 62 is attached to the light source attachment part 510, the pair of base cover parts 55 arranged in parallel in the short side direction (Y-axis direction) are formed so that the tip part in the protruding direction faces the light emitting element 61. Since the base cover part 55 covers a part of the mounting surface 620 of the substrate 62, there is no risk that the substrate 62 arranged on the light source attachment part 510 will fall off the base 50a. The substrate 62 of the light source 60 is slid and attached to the light source attachment part 510. It is optional whether or not to use an adhesive between the substrate 62 and the light source attachment part 510 for fixing the substrate 62 and the light source attachment part 510.

[0102] When the board 62 is attached to the light source attachment part 510, the light emitting element 61 is not covered by the pedestal lid parts 55, and is exposed between the pair of pedestal lid parts 55 arranged side by side in the short side direction (Y-axis direction). The pedestal lid parts 55 do not block the light emitted from the light emitting element 61. The pedestal lid part 55 receives operating heat of the light emitting element 61 transferred from the mounting surface 620 of the board 62.

[0103] (Light distribution control unit 31a) The light distribution control unit 31a controls the light distribution of the light emitted from the light source 60 in the luminaire 3a. The light distribution control unit 31a controls the direction of the light emitted from the light source 60 so that the light emitted from the light source 60 is emitted from the emission unit 32. That is, the pair of light distribution control units 31a distributes the light emitted from the light source 60 toward the emission unit 32 by reflection, and emits the light from the emission unit 32 at an angle that is set to be smaller than the irradiation angle of the light source 60. In one aspect of the luminaire 3a according to the second embodiment illustrated in FIG. 8, the light distribution control unit 31a is formed so that the light distribution angle θ, which is the light distribution control range, is 140°.

[0104] The light distribution control units 31a stand up from the outer case 30 and are arranged side by side in pairs with the optical axis of the light source 60 between them. The light distribution control units 31a stand up from the inner periphery 300 of the outer case 30 as a base end 310. Each of the pair of light distribution control units 31a extends from the outer case 30 toward the base 50a in a cross section perpendicular to the longitudinal direction (X-axis direction) of the outer case 30. More specifically, each of the pair of light distribution control units 31a extends from the outer case 30 toward the base lid portion 55 of the base 50a in a cross section perpendicular to the longitudinal direction (X-axis direction) of the outer case 30.

[0105] In a cross section perpendicular to the longitudinal direction (X-axis direction) of outer wall 30, light distribution control section 31a has base end 310 at one end and tip end 311a at the other end.

[0106] The tip 311a is the other end of the light distribution control section 31a, and is disposed in the housing section 13a at a distance from the light source 60, and faces the base 50a. The tip 311a is the end of the light distribution control section 31a on the base 50a side. The tip 311a faces the base cover 55 of the base 50a in a direction (Z-axis direction) perpendicular to the longitudinal direction (X-axis direction) and lateral direction (Y-axis direction) of the lighting fixture 3a. The tip 311a may be in contact with the base cover 55 of the base 50a, or may be spaced apart from the base cover 55. The tip 311a restricts the movement of the base 50a in the rotational direction.

[0107] In the direction along the optical axis of the light source 60, the tip 311a of the light distribution control section 31a is disposed so as to overlap the substrate 62 of the light source 60 via the pedestal lid section 55. In other words, the pedestal 50a has the pedestal lid section 55 disposed between the substrate 62 of the light source 60 and the tip 311a of the light distribution control section 31a. The tip 311a of the light distribution control section 31a is disposed on the formation side of the emission section 32 relative to the light emitting element 61 in the direction along the optical axis.

[0108] The tip 311a of the light distribution control section 31a is disposed outside the substrate 62 in a direction intersecting the optical axis (short side direction). Considering the purpose of increasing the illuminance directly below the light source 60 and the lamp 3a, the tip 311a is not disposed outside the reference line passing through the base end 310 along the optical axis in the short side direction (Y axis direction).

[0109] In addition, when the light emitted from the light source 60 so as to spread outward is attenuated and the light close to the optical axis of the light source 60 is selectively utilized, the tip end 311a is positioned outside the reference line passing through the base end 310 along the optical axis in the short direction (Y-axis direction).

[0110] The light distribution control section 31a is formed so as to extend over the entire longitudinal direction of the housing section 13a. The light distribution control section 31a is formed in a plate shape so as to extend along the longitudinal direction (X-axis direction) of the outer shell 30. The light distribution control section 31a has an inner surface section 312a and an outer surface section 313a. The configurations of the inner surface section 312a and the outer surface section 313a are similar to the configurations of the inner surface section 312 and the outer surface section 313 of the light distribution control section 31a.

[0111] [Functions and Effects of the Lighting Fixture 3a and the Lighting Device 1] The tip 311a of the light distribution control unit 31a is disposed on the formation side of the emission unit 32 relative to the light emitting element 61 in the direction along the optical axis. Therefore, when assembling the lamp 3a or when using the lamp 3a, there is no risk of the tip 311a of the light distribution control unit 31a damaging the light emitting element 61 and the substrate 62.

[0112] Moreover, the base 50a has a base cover 55 disposed between the substrate 62 of the light source 60 and the tip 311a of the light distribution control section 31a. When assembling the lamp 3a or when using the lamp 3a, there is no risk of the tip 311a damaging the light-emitting element 61 and the substrate 62. Furthermore, the lamp 3a can be disposed with the tip 311a of the light distribution control section 31a close to the light-emitting element 61 of the light source 60, so that the light distribution can be efficiently controlled.

[0113] In addition to the above, the luminaire 3a can achieve the same effects as the luminaire 3 of the embodiment 1. Since the lighting device 1 includes the luminaire 3a, the lighting device 1 can achieve the effects of the luminaire 3a described above.

[0114] Embodiment 3 9 is a cross-sectional view illustrating a main part of a luminaire 3b according to embodiment 3. Components having the same functions and actions as those of the luminaire 3 according to embodiment 1 are given the same reference numerals and their description is omitted. The luminaire 3b according to embodiment 3 differs from the luminaire 3 in that the configurations of the light distribution control section 31b and the base 50b are different from the configurations of the light distribution control section 31 and the base 50 of the luminaire 3 according to embodiment 1. Therefore, the following description will focus on the configurations of the light distribution control section 31b and the base 50b.

[0115] The lighting fixture 3b has a housing portion 13b, a base 40, a seat 50b, and a light source 60. The housing portion 13b has an outer casing 30, a light distribution control portion 31b, and an attachment portion 33.

[0116] (Pedestal 50b) The base 50b is a member to which the light source 60 is attached, and is a heat dissipation member that dissipates heat generated from the light source 60. The base 50b is also a member for holding the light source 60 in the housing portion 13b.

[0117] The base 50b is formed in an elongated shape along the longitudinal direction (X-axis direction) of the storage section 13b, and includes a base main part 51b, a pair of base side parts 52, a pair of engagement parts 53, and a pair of screw fixing parts 54, which are integrated together. The base main part 51b, the base side parts 52, the engagement parts 53, and the screw fixing parts 54 are formed to extend over the entire longitudinal direction (X-axis direction) of the base 50b. The base 50b differs from the base 50 of the first embodiment in the configuration of the base main part 51b. The basic structure of the base 50b, other than the base main part 51b, is the same as that of the base 50 of the first embodiment.

[0118] The pedestal main part 51b has a light source attachment part 510b to which the substrate 62 of the light source 60 is attached, and overhanging parts 511 formed on both ends of the light source attachment part 510b in the short-side direction (Y-axis direction) of the pedestal main part 51b. The light source attachment part 510b is formed between the two overhanging parts 511. The pedestal main part 51b also has a groove part 512 into which the tip part 311b of the light distribution control part 31b is fitted, and a partition wall 513 that separates the light source attachment part 510b and the groove part 512.

[0119] The light source attachment portion 510b is a portion formed in a concave shape in the base main portion 51b. The light source attachment portion 510b is formed so as to extend over the entire longitudinal direction (X-axis direction) of the base 50b. The light source attachment portion 510b is formed so as to be concave with respect to the emission side surface of the protruding portion 511. The installation surface of the board 62 in the light source attachment portion 510b is formed in a flat shape. In the base main portion 51b, a step is formed between the installation surface of the board 62 in the light source attachment portion 510b and the emission side surface of the protruding portion 511. Note that in the short side direction (Y-axis direction) of the base 50b, the width dimension of the light source attachment portion 510b is smaller than the width dimension of the light source attachment portion 510 of the first embodiment.

[0120] When the base 50b is fixed inside the outer shell 30, a substrate 62 is placed on a surface located on the emission side of the light source attachment part 510b. When the substrate 62 is placed on the light source attachment part 510b, the light emitting element 61 of the light source 60 faces the emission part 32. Note that the width dimension of the substrate 62 in the short side direction (Y-axis direction) of the base 50b is smaller than the width dimension of the substrate 62 in the first embodiment.

[0121] The groove 512 is a portion formed in a concave shape in the base main part 51b. The groove 512 is formed so as to extend over the entire longitudinal direction (X-axis direction) of the base 50b. The groove 512 is formed so as to be concave with respect to the emission side surface of the overhanging part 511. The base main part 51b has a step between the bottom of the groove 512 and the emission side surface of the overhanging part 511. The groove 512 is formed along the light source attachment part 510b in the longitudinal direction (X-axis direction) of the base 50b. The groove 512 is formed on both sides of the light source attachment part 510b in the lateral direction (Y-axis direction) of the base 50b. The base 50b differs from the base 50 according to the first embodiment in that the groove 512 is formed in the base main part 51b.

[0122] The partition wall 513 is a wall that separates the light source attachment portion 510b and the groove portion 512. The partition wall 513 is provided between the light source attachment portion 510b and the groove portion 512. The partition wall 513 is formed in a convex shape with respect to the installation surface of the substrate 62 in the light source attachment portion 510b and the bottom portion of the groove portion 512. The partition wall 513 forms the side wall of the light source attachment portion 510b formed in a concave shape and the side wall of the groove portion 512 formed in a concave shape. The surface of the partition wall 513 that forms the side wall of the light source attachment portion 510b faces the substrate 62, and the surface of the partition wall 513 that forms the side wall of the groove portion 512 faces the tip portion 311b of the light distribution control portion 31b. The partition wall 513 is formed to extend over the entire longitudinal direction (X-axis direction) of the base 50b. The partition wall 513 is formed along the light source attachment portion 510b and the groove portion 512 in the longitudinal direction (X-axis direction) of the base 50b.

[0123] (Light distribution control unit 31b) The light distribution control unit 31b controls the light distribution of the light emitted from the light source 60 in the luminaire 3b. The light distribution control unit 31b controls the direction of the light emitted from the light source 60 so that the light emitted from the light source 60 is emitted from the emission unit 32. That is, the pair of light distribution control units 31b distributes the light emitted from the light source 60 toward the emission unit 32 by reflection, and emits the light from the emission unit 32 at an angle that is set to be smaller than the irradiation angle of the light source 60. In one aspect of the luminaire 3b according to the second embodiment illustrated in FIG. 9, the light distribution control unit 31b is formed so that the light distribution angle θ, which is the light distribution control range, is 140°.

[0124] The light distribution control parts 31b stand up from the outer case 30 and are arranged side by side in pairs with the optical axis of the light source 60 between them. The light distribution control parts 31b stand up from the inner periphery 300 of the outer case 30 as a base end 310. Each of the pair of light distribution control parts 31b extends from the outer case 30 toward the base 50b in a cross section perpendicular to the longitudinal direction (X-axis direction) of the outer case 30. More specifically, each of the pair of light distribution control parts 31b extends from the outer case 30 toward the groove part 512 of the base 50b in a cross section perpendicular to the longitudinal direction (X-axis direction) of the outer case 30.

[0125] In a cross section perpendicular to the longitudinal direction (X-axis direction) of outer wall 30, light distribution control section 31b has base section 310 at one end and tip section 311b at the other end.

[0126] The tip 311b is the other end of the light distribution control section 31b, and is disposed in the accommodation section 13b apart from the light source 60, and faces the base 50b. The tip 311b is the end of the light distribution control section 31b on the base 50b side. The tip 311b faces the base 50b in a direction (Z-axis direction) perpendicular to the longitudinal direction (X-axis direction) and lateral direction (Y-axis direction) of the lighting fixture 3b.

[0127] In a state where the base 50b is attached to the housing 13b, the tip 311b of the light distribution control section 31b is fitted into the groove 512. In the short-side direction (Y-axis direction) of the base 50b, the tip 311b of the light distribution control section 31b is arranged so as to overlap the board 62 of the light source 60 via the partition wall 513. In other words, the base 50b has the partition wall 513 arranged between the board 62 of the light source 60 and the tip 311b of the light distribution control section 31b. The tip 311b of the light distribution control section 31b is arranged on the opposite side to the emission section 32 with respect to the light-emitting element 61 in the direction along the optical axis. In other words, the tip 311b of the light distribution control section 31b is arranged on the opposite side to the optical axis with respect to the edge of the light source 60 in the short-side direction intersecting with the optical axis.

[0128] Light distribution control section 31b is formed to a length that allows tip portion 311b of light distribution control section 31b to fit into groove portion 512 and be disposed inside groove portion 512. Therefore, if the positions and sizes of the members that make up lamp 3 and lamp 3b are the same, the length of light distribution control section 31b in embodiment 3 is different from the length of light distribution control section 31 in embodiment 1.

[0129] [Effects of the luminaire 3b and the lighting device 1] With the base 50b attached to the housing 13b, the tip 311b of the light distribution control section 31b is fitted into the groove 512. The tip 311b of the light distribution control section 31b fits into the groove 512, thereby restricting the movement of the base 50b in the rotational direction. Furthermore, the tip 311b of the light distribution control section 31b fits into the groove 512, thereby preventing interference between the tip 311b and the light source 60. Therefore, there is no risk of the light distribution control section 31b damaging the light emitting element 61 and the board 62 when assembling the lamp 3b or when using the lamp 3b.

[0130] Moreover, the tip portion 311b is disposed on the opposite side of the light emitting element 61 from the emission portion 32 in the direction along the optical axis. Therefore, when assembling the lamp 3b or when using the lamp 3b, there is no risk that the light emitting element 61 and the substrate 62 will be damaged by the tip portion 311b of the light distribution control portion 31b.

[0131] The luminaire 3b has a partition wall 513 between the light source attachment portion 510b and the groove portion 512. Therefore, when assembling the luminaire 3b or when using the luminaire 3b, there is no risk of the tip portion 311b of the light distribution control portion 31b damaging the light emitting element 61 and the board 62. Furthermore, the luminaire 3b can be arranged such that the tip portion 311b of the light distribution control portion 31b is close to the light emitting element 61 of the light source 60, so that the light distribution can be efficiently controlled.

[0132] In addition to the above, the luminaire 3b can achieve the same effects as the luminaire 3 of the embodiment 1. Since the lighting device 1 includes the luminaire 3b, the lighting device 1 can achieve the effects of the luminaire 3b described above.

[0133] Embodiment 4 FIG. 10 is a first cross-sectional view illustrating the main part of a luminaire 3c according to the fourth embodiment. Components having the same functions and actions as those of the luminaire 3 according to the first embodiment are given the same reference numerals and their description is omitted. The luminaire 3c according to the fourth embodiment further specifies the shape of the outer shell 30c of the storage section 13c. Therefore, the following description will focus on the configuration of the outer shell 30c. The configurations other than the shapes of the storage section 13c, the outer shell 30c, and the base 40c described below are the same as those of the storage section 13, the outer shell 30, and the base 40.

[0134] The outer shell 30c of the housing 13c is an elliptical cylinder. The outer shell 30c of the housing 13c is formed in an elliptical shape in a cross section perpendicular to the longitudinal direction (X-axis direction) of the lamp 3c. In the cross section perpendicular to the longitudinal direction (X-axis direction) of the lamp 3c, the short side direction (Y-axis direction) of the lamp 3c is the long axis direction of the ellipse, and the direction (Z-axis direction) perpendicular to the longitudinal direction (X-axis direction) and short side direction (Y-axis direction) of the lamp 3c is the short axis direction of the ellipse. The short axis direction of the outer shell 30c is the first direction of the outer shell 30c, and the long axis direction of the outer shell 30c is the second direction of the outer shell 30c. The first direction is also the direction perpendicular to the substrate 62, and the second direction is also the short side direction of the substrate 62.

[0135] Similarly, the base 40c is formed in an elliptical shape in a cross section perpendicular to the longitudinal direction (X-axis direction) of the lamp 3c. In a cross section perpendicular to the longitudinal direction (X-axis direction) of the lamp 3c, the base 40c has a major axis direction of the ellipse along the short side (Y-axis) of the lamp 3c, and a minor axis direction of the ellipse along the direction perpendicular to the longitudinal direction (X-axis) and short side (Y-axis) of the lamp 3c. The minor axis direction of the base 40c is the first direction of the outer casing 30c described above, and the major axis direction of the base 40c is the second direction of the outer casing 30c.

[0136] Here, the outer diameter of the base 40c in the first direction is defined as outer diameter Lz1. The outer diameter Lz1 is the distance between the outer peripheral surfaces of the base housing 41 in the short axis direction. The outer diameter of the base 40c in the second direction is defined as outer diameter Ly1. The outer diameter Ly1 is the distance between the outer peripheral surfaces of the base housing 41 in the long axis direction. Similarly, the outer diameter of the outer wall 30c in the first direction is defined as outer diameter Lz2. The outer diameter Lz2 is the distance between the outer peripheral surfaces of the outer wall 30c in the short axis direction. The outer diameter of the outer wall 30c in the second direction is defined as outer diameter Ly2. The outer diameter Ly2 is the distance between the outer peripheral surfaces of the outer wall 30c in the long axis direction.

[0137] The luminaire 3c is formed such that the outer diameter Ly1 is larger than the outer diameter Lz1 (outer diameter Ly1>outer diameter Lz1) and the outer diameter Ly2 is larger than the outer diameter Lz2 (outer diameter Ly2>outer diameter Lz2). The luminaire 3c is longer in the short side direction (Y-axis direction) of the luminaire 3 than the luminaire 3 of the first embodiment, and the configuration of the luminaire 3 except for the light source 60 and the screw fixing part 54 is elongated along the short side direction. That is, the outer casing 30c of the luminaire 3c is formed in the shape of a flattened ellipse that is relatively short in the direction along the optical axis of the light source 60 and long in the direction along the short side direction (Y-axis direction) of the outer casing 30c perpendicular to the optical axis in a cross section perpendicular to the longitudinal direction (X-axis direction) of the outer casing 30c.

[0138] 10, the light distribution control section 31 is formed so that the light distribution angle θ, which is the light distribution control range, is 120°. The light fitting 3c may be provided with two screw fixing sections 54 along the short side direction (Y-axis direction) of the base 50, and correspondingly, two screw insertion holes 412 along the short side direction (Y-axis direction) of the base 40c, and the base 40c may be fixed to the base 50 using two screws 81.

[0139] Furthermore, when the lighting fixture 3c is installed so that its optical axis is aligned in the vertical direction (the direction of gravity), in order to prevent the effects of warping due to its own weight, it is preferable to hold the outer casing 30c between the bases 40c in addition to holding the bases 40c in the socket 21.

[0140] [Effects of the luminaire 3c and the lighting device 1] The outer casing 30c of the luminaire 3c is relatively short in the direction along the optical axis of the light source 60 and has a flat shape long in the direction along the short side of the luminaire 3c perpendicular to the optical axis. That is, the luminaire 3c can have a shorter dimension along the optical axis in a vertical cross section to the longitudinal direction (X-axis direction) of the luminaire 3c compared to the luminaire 3 of the first embodiment, while taking into consideration the graininess directly below the light source 60 and the luminaire 3c. Therefore, the luminaire 3c can reduce the size and weight of the light source 60 and the luminaire 3c. In particular, the luminaire 3c can suppress the height dimension of the luminaire 3c and the lighting device 1 to be small, and is therefore effective in an installation environment with a small height dimension, such as under a shelf.

[0141] The luminaire 3c is formed so that the outer diameter Ly1 is larger than the outer diameter Lz1 (outer diameter Ly1>outer diameter Lz1) and the outer diameter Ly2 is larger than the outer diameter Lz2 (outer diameter Ly2>outer diameter Lz2). The luminaire 3c has a light distribution control section 31 formed so that the light distribution angle θ, which is the light distribution control range, is 120°. Therefore, the luminaire 3c can improve the light extraction efficiency by increasing the area of ​​the emission section 32, and can increase the illuminance directly below the light source 60 and the luminaire 3c while also increasing the illuminance in the range around the light source 60 and the luminaire 3c.

[0142] In addition to the above, the luminaire 3c can achieve the same effects as the luminaire 3 of the embodiment 1. Since the lighting device 1 includes the luminaire 3c, the lighting device 1 can achieve the effects of the luminaire 3c described above.

[0143] 11 is a second cross-sectional view illustrating a main part of a lamp 3d according to embodiment 4. The lamp 3d according to embodiment 4 is a modified example of the lamp 3c according to embodiment 4. The configurations of the housing 13d, the outer casing 30d, and the base 40d, other than the shapes thereof, are the same as those of the housing 13, the outer casing 30, and the base 40, which will be described below.

[0144] The outer shell 30d of the housing 13d is an elliptical cylinder. The outer shell 30d of the housing 13d is formed in an elliptical shape in a cross section perpendicular to the longitudinal direction (X-axis direction) of the luminaire 3d. In the cross section perpendicular to the longitudinal direction (X-axis direction) of the luminaire 3d, the short-side direction (Y-axis direction) of the luminaire 3d is the short-side direction of the ellipse, and the direction (Z-axis direction) perpendicular to the longitudinal direction (X-axis direction) and short-side direction (Y-axis direction) of the luminaire 3d is the long-side direction of the ellipse. The long-side direction of the outer shell 30d is the first direction of the outer shell 30d, and the short-side direction of the outer shell 30d is the second direction of the outer shell 30d. The first direction is also perpendicular to the substrate 62, and the second direction is also the short-side direction of the substrate 62.

[0145] Similarly, the base 40d is formed in an elliptical shape in a cross section perpendicular to the longitudinal direction (X-axis direction) of the lamp 3d. In the cross section perpendicular to the longitudinal direction (X-axis direction) of the lamp 3d, the short side direction (Y-axis direction) of the lamp 3d is the short axis direction of the ellipse, and the direction perpendicular to the longitudinal direction (X-axis direction) and short side direction (Y-axis direction) of the lamp 3d (Z-axis direction) is the long axis direction of the ellipse. The long axis direction of the base 40d is the first direction of the outer casing 30d described above, and the short axis direction of the base 40d is the second direction of the outer casing 30d.

[0146] Here, the outer diameter of the base 40d in the first direction is defined as outer diameter Lz1. The outer diameter Lz1 is the distance between the outer peripheral surfaces of the base housing 41 in the major axis direction. The outer diameter of the base 40d in the second direction is defined as outer diameter Ly1. The outer diameter Ly1 is the distance between the outer peripheral surfaces of the base housing 41 in the minor axis direction. Similarly, the outer diameter of the outer wall 30d in the first direction is defined as outer diameter Lz2. The outer diameter Lz2 is the distance between the outer peripheral surfaces of the outer wall 30d in the major axis direction. The outer diameter of the outer wall 30d in the second direction is defined as outer diameter Ly2. The outer diameter Ly2 is the distance between the outer peripheral surfaces of the outer wall 30d in the minor axis direction.

[0147] The luminaire 3d is formed such that the outer diameter Lz1 is larger than the outer diameter Ly1 (outer diameter Ly1<outer diameter Lz1) and the outer diameter Lz2 is larger than the outer diameter Ly2 (outer diameter Ly2<outer diameter Lz2). The luminaire 3d is longer in the optical axis direction (Z-axis direction) of the luminaire 3 than the luminaire 3 of the first embodiment, and the configuration of the luminaire 3 except for the light source 60 and the screw fixing part 54 is elongated along the optical axis. That is, the outer casing 30d of the luminaire 3d is formed in the shape of a flattened ellipse that is relatively long in the direction along the optical axis of the light source 60 and short in the direction along the short side direction (Y-axis direction) of the outer casing 30d perpendicular to the optical axis in a cross section perpendicular to the longitudinal direction (X-axis direction) of the outer casing 30d.

[0148] In one aspect of a luminaire 3d according to the fourth embodiment illustrated in FIG. 11, a light distribution control section 31 is formed so that the light distribution angle θ, which is the light distribution control range, is 90°.

[0149] [Effects of the luminaire 3d and the lighting device 1] The outer casing 30d of the luminaire 3d is relatively long in the direction along the optical axis of the light source 60 and has a flat shape that is short in the direction along the short side of the luminaire 3d perpendicular to the optical axis. That is, the luminaire 3d can have a shorter dimension along the short side (Y-axis direction) in a cross section perpendicular to the longitudinal direction (X-axis direction) of the luminaire 3d compared to the luminaire 3 of the first embodiment. Therefore, the luminaire 3d can reduce the size and weight of the light source 60 and the luminaire 3d. In particular, the luminaire 3d can suppress the width dimension of the luminaire 3d and the lighting device 1, and is therefore effective in installation environments with small width dimensions, such as the periphery (corner) of a construction site or a slit-shaped gap.

[0150] The luminaire 3d is formed so that the outer diameter Lz1 is larger than the outer diameter Ly1 (outer diameter Ly1<outer diameter Lz1) and the outer diameter Lz2 is larger than the outer diameter Ly2 (outer diameter Ly2<outer diameter Lz2). The luminaire 3d is also formed with a light distribution control section 31 so that the light distribution angle θ, which is the light distribution control range, is 90°. Therefore, the luminaire 3d can suppress graininess by increasing the distance dimension between the light source 60 and the emission section 32, and can increase the uniformity of the light emitted from the emission section 32 while increasing the illuminance directly below the light source 60 and the luminaire 3d.

[0151] Furthermore, the luminaire 3d is formed so that the outer diameter Lz1 is larger than the outer diameter Ly1 (outer diameter Ly1<outer diameter Lz1) and the outer diameter Lz2 is larger than the outer diameter Ly2 (outer diameter Ly2<outer diameter Lz2). Therefore, even when the luminaire 3d is installed so that the optical axis is aligned in the vertical direction (gravity direction), the luminaire 3d is not easily affected by warping due to its own weight.

[0152] In addition to the above, the luminaire 3d can achieve the same effects as the luminaire 3 of the embodiment 1. Since the lighting device 1 includes the luminaire 3d, the lighting device 1 can achieve the effects of the luminaire 3d described above.

[0153] Embodiment 5. FIG. 12 is a cross-sectional view for explaining the main part of the luminaire 3e according to the fifth embodiment. The components having the same functions and actions as those of the luminaire 3 according to the first embodiment are given the same reference numerals and the explanation thereof is omitted. The luminaire 3e according to the fifth embodiment differs from the luminaire 3 mainly in that the configurations of the storage section 13e and the base 50e are different from those of the storage section 13 and the base 50 of the luminaire 3 according to the first embodiment. Therefore, the following explanation will focus on the configurations of the storage section 13e and the base 50e. The configurations and functions of the storage section 13e and the base 50e other than those described below are essentially the same as those of the storage section 13 and the base 50 of the first embodiment.

[0154] [Lighting 3e] As shown in Fig. 12, the luminaire 3e of the fifth embodiment is formed in a flat shape that is relatively short in the direction along the optical axis (Z-axis direction) and long in the short-side direction (Y-axis direction) perpendicular to the optical axis. Without being limited to this, the luminaire 3e may be in a flat shape that is relatively long in the direction along the optical axis (Z-axis direction) and short in the short-side direction (Y-axis direction) perpendicular to the optical axis. Alternatively, the luminaire 3e may be in a shape in which the dimension along the optical axis (Z-axis direction) and the dimension along the short-side direction (Y-axis direction) perpendicular to the optical axis are substantially the same, that is, the luminaire 3e is not flat.

[0155] The lighting fixture 3e is turned on by power supplied from the appliance 2. The lighting fixture 3e has a container 13e, a base 40e, a base 50e, and a light source 60.

[0156] (Housing section 13e) The storage section 13e is formed in a long, hollow cylindrical shape, and both ends in the longitudinal direction (X-axis direction) are open. The storage section 13e is attached to the base 50e. When attached to the base 50e, the storage section 13e stores the light source 60 and the base 50e inside. The storage section 13e has an outer shell 30e, a light distribution control section 31, and an attachment section 33e.

[0157] (Outer 30e) The outer wall 30e of the storage section 13e is a part formed in a cylindrical shape in the storage section 13e. The outer wall 30e is formed in an octagonal shape in a cross section perpendicular to the longitudinal direction (X-axis direction). Therefore, the storage section 13e is formed in an octagonal cylindrical shape. Note that the cross section of the outer wall 30e perpendicular to the longitudinal direction (X-axis direction) is not limited to an octagon, and may be formed in a polygonal shape having more than one side, such as a triangle. The storage section 13e can be formed in a polygonal cylindrical shape that corresponds to the installation environment.

[0158] The outer shell 30e of the housing 13e has an emission section 32e. The emission section 32e is a portion of the outer shell 30e from which light emitted from the light source 60 is emitted. The emission section 32e is formed between a pair of light distribution control sections 31 in the outer shell 30e. The emission section 32e is formed in a flat plate shape. The inner circumferential section 300 and the outer circumferential section 301 of the emission section 32e are formed in a planar shape. Note that the inner circumferential section 300 and the outer circumferential section 301 of the emission section 32e are not limited to a configuration formed in a planar shape. For example, unevenness may be formed on either or both of the inner circumferential section 300 and the outer circumferential section 301 of the emission section 32e.

[0159] The outer shell 30e has an emission portion 32e as a wall portion on the emission side of the luminaire 3e, and a bottom portion 34e as a wall portion on the fixture side of the luminaire 3e. The bottom portion 34e is formed in a flat plate shape.

[0160] (Light distribution control unit 31) In one aspect of a luminaire 3e according to the fifth embodiment illustrated in FIG. 12, a light distribution control section 31 is formed so that the light distribution angle θ, which is the light distribution control range, is 135°.

[0161] (Mounting portion 33e) The mounting portion 33e is engaged with an engagement portion 53e formed on the base 50e in a state in which the outer shell 30e is attached to the base 50e. The mounting portions 33e are formed in pairs so as to be located on both sides of the substrate 62 of the light source 60 in the short-side direction (Y-axis direction) of the lighting fixture 3e.

[0162] In a cross section perpendicular to the longitudinal direction (X-axis direction) of the lamp 3e, the pair of mounting parts 33e protrude from the outer shell 30e toward the cylindrical space formed by the outer shell 30e so that their respective tips face each other. In a cross section perpendicular to the longitudinal direction (X-axis direction) of the lamp 3e, the pair of mounting parts 33e each extend in the short side direction (Y-axis direction) of the lamp 3e.

[0163] The attachment portion 33e is formed so as to extend over the entire longitudinal direction of the storage portion 13e. The attachment portion 33e is formed at a position offset toward the device side from the axis of the center O parallel to the longitudinal direction of the storage portion 13e. The attachment portion 33e is formed on the opposite side of the storage portion 13e to the base end portion 310 of the light distribution control portion 31 with respect to the geometric center in the direction along the optical axis.

[0164] (40e base) The base 40e is attached to both ends of the housing portion 13e in the longitudinal direction (X-axis direction). The base 40e includes a base housing 41e and a base terminal .

[0165] The base housing 41e is formed in a cylindrical shape with a bottom. The base housing 41e is formed in an octagonal shape in a cross section perpendicular to the longitudinal direction (X-axis direction). The cross section of the base housing 41e perpendicular to the longitudinal direction (X-axis direction) is not limited to an octagon, and may be formed in a polygon having more than one side, such as a triangle. The cross section of the base housing 41e may have any shape that fits with the outer wall 30e.

[0166] (Pedestal 50e) The base 50e is a member to which the light source 60 is attached, and is a heat dissipation member that dissipates heat generated from the light source 60. The base 50e is also a member for holding the light source 60 in the housing portion 13e.

[0167] The base 50e is formed in a long plate shape along the longitudinal direction (X-axis direction) of the storage section 13e. The base 50e has a base main part 51e and a pair of engagement parts 53e, which are integrated together. The base main part 51e and the engagement parts 53e are formed to extend over the entire longitudinal direction (X-axis direction) of the base 50e. The base 50e does not have the base side part 52 that the base 50 of the first embodiment has.

[0168] With the outer case 30e attached to the pedestal 50e, the pedestal main part 51e faces and abuts against the bottom part 34e of the outer case 30e. The pedestal main part 51e has a light source attachment part 510 to which the substrate 62 of the light source 60 is attached, and protrusions 511e formed on both ends of the light source attachment part 510 in the short side direction (Y-axis direction) of the pedestal main part 51e.

[0169] 12, protrusions 511e protruding outward in the short-side direction are provided at both ends of the light source attachment part 510 in the short-side direction (Y-axis direction). The protrusions 511e are formed so as to extend over the entire length of the base 50e.

[0170] An engagement portion 53e is provided at the tip of the overhanging portion 511e in the short-side direction (Y-axis direction) of the pedestal main part 51e. The engagement portion 53e is a notch provided at the side edge of the overhanging portion 511e, and is formed in a recessed shape from the surface of the pedestal main part 51e on which the substrate 62 is placed to the surface facing the bottom part 34e. The engagement portion 53e is a stepped portion formed at the end of the overhanging portion 511e in the short-side direction (Y-axis direction) of the pedestal main part 51e.

[0171] The engaging portion 53e is formed in an area of ​​the base 50e where the light source 60 is not disposed. The engaging portion 53e is formed to extend over the entire longitudinal direction of the base 50e. When the base 50e is fixed inside the outer shell 30e, the engaging portion 53e is disposed at a position offset toward the device side from the axis of the center O of the storage portion 13e.

[0172] The engaging portion 53e engages with the mounting portion 33e formed on the outer case 30e when the outer case 30e is attached to the base 50e. The engaging portion 53e restricts the movement of the base 50e when the mounting portion 33e and the engaging portion 53e are engaged with each other. In the direction along the optical axis, both ends of the base 50e in the short direction (Y-axis direction) are sandwiched between the bottom portion 34e and the mounting portion 33e.

[0173] 12 illustrates an example of a lamp 3e in which the base 50e is not provided with a screw fixing portion 54. However, the lamp 3e may be configured such that the base 50e is provided with a screw fixing portion 54, a corresponding screw insertion hole 412 is provided in the base 40e, and the base 40e is fixed to the base 50e using a screw 81.

[0174] [Effects of the luminaire 3e and the lighting device 1] The luminaire 3e includes a pair of light distribution control sections 31 that stand up from the outer casing 30e toward the base 50e with the peripheral portion of the emission section 32 as the base end 310, and have a tip end 311 opposite the base end 310 that is spaced apart from the light source 60 and opposed to the base 50e. Therefore, the luminaire 3e can prevent the tip end 311 of the light distribution control section 31 from coming into contact with the light source 60 during assembly or use, and there is no risk of damaging the light source 60. Therefore, the luminaire 3e is not subject to restrictions in the usage environment, and can achieve long-term quality improvement.

[0175] The base 50e of the lamp 3e is provided with an engagement portion 53e formed in an area where the light source 60 is not arranged. The storage portion 13e of the lamp 3e is formed on the opposite side of the base end portion 310 with respect to the geometric center in the direction along the optical axis, and is provided with an attachment portion 33e with which the engagement portion 53e is engaged. The lamp 3e can ensure the length of the light distribution control portion 31 by this configuration. In addition to the light that directly reaches the emission portion 32 from the light source 60, the lamp 3e can increase the amount of light in a specific direction such as a direction directly below the light source 60 and the lamp 3e compared to a lamp that does not have the light distribution control portion 31 by allowing the light reflected by the light distribution control portion 31 to reach the emission portion 32. Therefore, the lamp 3e can improve the illuminance in a specific direction such as a direction directly below the light source 60 and the lamp 3e.

[0176] In addition to the above, the luminaire 3e can achieve the same effects as the luminaire 3 of the embodiment 1. Since the lighting device 1 includes the luminaire 3e, the lighting device 1 can achieve the effects of the luminaire 3e described above.

[0177] Embodiment 6 FIG. 13 is a cross-sectional view for explaining the main part of a luminaire 3f according to the sixth embodiment. Note that components having the same functions and actions as those of the luminaire 3 according to the first embodiment are given the same reference numerals and their explanation is omitted. The luminaire 3f according to the sixth embodiment differs from the luminaire 3 mainly in that the configuration of the storage section 13f is different from the configuration of the storage section 13 of the luminaire 3 according to the first embodiment. Therefore, the following explanation will mainly focus on the configuration of the storage section 13f. Note that the configuration and functions of the storage section 13f other than those described below are essentially the same as those of the storage section 13 according to the first embodiment.

[0178] [Lighting 3f] The luminaire 3f is turned on by power supplied from the appliance 2. The luminaire 3f includes a container 13f, a base 40f, a base 50, and a light source 60.

[0179] (Storage section 13f) The storage section 13f is a cover for the light source 60. The storage section 13f is formed in a long, hollow cylindrical shape, and both ends in the longitudinal direction (X-axis direction) are open. The storage section 13f is attached to the base 50. When the storage section 13f is attached to the base 50, it stores the light source 60 and the base 50 therein. The storage section 13f has an outer shell 30f, a light distribution control section 31f, an attachment section 33 shown in FIG. 4, and a light source holding section 35.

[0180] (Outer building 30F) The outer wall 30f is attached to the base 50 in a state where it covers the light source 60 so as to intersect with the optical axis of the light source 60. The outer wall 30f of the accommodation section 13f is provided on both ends of the light distribution control section 31f in a direction along the optical axis of the light source 60. More specifically, the outer wall 30f has a first outer wall 30f1 provided to connect the tip ends 311f of the pair of light distribution control sections 31f via a light source holding section 35 described later, and a second outer wall 30f2 provided between the base ends 310 of the pair of light distribution control sections 31f.

[0181] The first outer wall 30f1 and the second outer wall 30f2 are formed in an arc shape in a cross section perpendicular to the longitudinal direction (X-axis direction) of the luminaire 3f. The first outer wall 30f1 is formed in an arc shape convex toward the fixture side of the luminaire 3f as shown in FIG. 13 in a cross section perpendicular to the longitudinal direction (X-axis direction) of the luminaire 3f. The second outer wall 30f2 is formed in an arc shape convex toward the emission side of the luminaire 3f. Note that the first outer wall 30f1 and the second outer wall 30f2 are not limited to a configuration in which they are formed in an arc shape in a cross section perpendicular to the longitudinal direction (X-axis direction) of the luminaire 3f.

[0182] The first outer shell 30f1 provided to connect the tip ends 311f of the pair of light distribution control parts 31f engages with the attachment part 33 and houses the light source 60 and the base 50 therein. The second outer shell 30f2 provided between the base ends 310 of the pair of light distribution control parts 31f constitutes the emission part 32.

[0183] (Light distribution control unit 31f) The light distribution control section 31f controls the light distribution of the light emitted from the light source 60 in the luminaire 3f. The light distribution control sections 31f stand up from the second outer case 30f2 and are arranged side by side in a pair with the optical axis of the light source 60 between them. The light distribution control sections 31f stand up from the inner periphery 300 of the second outer case 30f2 as a base end section 310. Each of the pair of light distribution control sections 31f extends from the second outer case 30f2 toward the base 50 in a cross section perpendicular to the longitudinal direction (X-axis direction) of the outer case 30f.

[0184] 13, light distribution control section 31f is formed so that light distribution angle θ, which is the light distribution control range, is 140°. Light distribution control section 31f distributes light emitted from light source 60 toward emission section 32 by reflection, and causes the light to be emitted from emission section 32 at an angle smaller than the irradiation angle of light source 60.

[0185] In a vertical cross section relative to the longitudinal direction (X-axis direction) of the outer casing 30f, the light distribution control unit 31f has a base end 310 that forms the peripheral portion of the emission unit 32 at one end, and a tip end 311f that is connected to the light source holding unit 35 at the other end.

[0186] The tip 311f is the other end of the light distribution control section 31f, and is disposed in the accommodation section 13f at a distance from the light source 60, and faces the base 50. The tip 311f is the end of the light distribution control section 31f on the base 50 side. The tip 311f faces the base 50 in a direction (Z-axis direction) perpendicular to the longitudinal direction (X-axis direction) and lateral direction (Y-axis direction) of the lighting fixture 3f. The tip 311f may be in contact with the base 50 or may be spaced apart from the base 50. The tip 311f restricts the movement of the base 50 in the rotational direction.

[0187] The tip 311f of the light distribution control section 31f is disposed so as to face any part of the base main section 51 other than the light source attachment section 510. In other words, the tip 311f of the light distribution control section 31f is disposed outside the light source 60 in the direction intersecting the optical axis (short side direction), and is disposed outside the substrate 62.

[0188] A light source holding section 35 is provided between a tip portion 311f of the light distribution control section 31f and a first outer casing 30f1 provided on the fixture side of the luminaire 3f.

[0189] (Light source holding part 35) The accommodation section 13f includes a light source holding section 35 formed to extend toward the first outer wall 30f1 with the tip section 311f of the light distribution control section 31f as a base end section 350. The light source holding section 35 is provided on the inner periphery of the accommodation section 13f in order to hold the light source 60. The light source holding section 35 abuts against the base 50 to hold the light source 60.

[0190] A tip portion 351 of the light source holding portion 35 is connected to the first outer wall 30f1. The light source holding portion 35 is formed along the short-side direction (Y-axis direction) of the lamp 3f in a cross section perpendicular to the long-side direction (X-axis direction) of the lamp 3f, and supports the protruding portion 511 of the base 50 from the emission side of the lamp 3f.

[0191] The housing 13f is integrally formed with an outer shell 30f, a light distribution control section 31f, and a light source holding section 35. In a vertical cross section to the longitudinal direction (X-axis direction) of the luminaire 3f, the light distribution control section 31f and the light source holding section 35 are formed in a V-shape so that the side surface of the luminaire 3f is open. That is, the housing 13f does not have the outer shell 30f in a portion between the base end 310 of the light distribution control section 31f and the tip end 351 of the light source holding section 35.

[0192] In the portion of the housing 13f where the outer casing 30f is not formed, the outer surface 313f of the light distribution control unit 31f forms the outer wall of the housing 13f and the luminaire 3f and faces the lighting space. In the portion, the outer surface 35f of the light source holding unit 35 forms the outer wall of the housing 13f and the luminaire 3f and faces the lighting space. In the direction along the optical axis of the light source 60, the outer surface 313f of the light distribution control unit 31f and the outer surface 35f of the light source holding unit 35 face each other and form inclined surfaces.

[0193] In the luminaire 3f, the area of ​​the outer peripheral wall of the imaginary outer shell 30f between the base end 310 of the light distribution control unit 31f and the tip end 351 of the light source holding unit 35 is larger than the area of ​​the outer surface portion 35f of the light source holding unit 35. That is, compared to the accommodating unit 13 of the first embodiment, the accommodating unit 13f has a part of the outer shell 30 removed, and the outer peripheral wall of the removed part of the outer shell 30 forms an area larger than the outer surface portion 35f of the light source holding unit 35.

[0194] (40f cap) The base 40f includes a base housing 41f that corresponds to the cross-sectional shape of the accommodation portion 13f. Therefore, the base 40f constituting the lamp 3f of the sixth embodiment is different in aspect from the base 40 of the first embodiment in which the cross-sectional shape of the base housing 41 is formed in a circular shape.

[0195] [Effects of the luminaire 3f and the lighting device 1] In the luminaire 3f, the light source holding part 35 and the light distribution control part 31f form part of the outer wall of the accommodation part 13f. Therefore, the outer surface part 313f of the light distribution control part 31f and the outer surface part 35f of the light source holding part 35 face the lighting space, which is the external space, improving the heat dissipation of the luminaire 3f. The light distribution control part 31f and the light source holding part 35 may be formed using a material that promotes heat conduction, in which case the heat dissipation of the luminaire 3f can be expected to be further improved.

[0196] Moreover, in the storage section 13f of the luminaire 3f, the outer shell 30f between the base end section 310 of the light distribution control section 31f and the tip end section 351 of the light source holding section 35, which constitutes an area larger than the outer wall of the light source holding section 35, is deleted. Therefore, the luminaire 3f of the sixth embodiment uses less material than the luminaire 3 of the first embodiment which is formed in a cylindrical shape, so that the material costs of the storage section 13f and the luminaire 3f can be suppressed.

[0197] In addition to the above, the luminaire 3f can achieve the same effects as the luminaire 3 of the embodiment 1. Since the lighting device 1 includes the luminaire 3f, the lighting device 1 can achieve the effects of the luminaire 3f described above.

[0198] In addition, the base 40f in embodiment 6 has been described as having a base housing 41f that corresponds to the cross-sectional shape of the accommodating section 13f, but this is not limited thereto. The base housing 41f may be attached to the outer housing 30f so as to cover the end opening of the outer housing 30f, and the cross-sectional shape of the base housing 41f may be formed in a circular shape like the base housing 41 in embodiment 1.

[0199] Embodiment 7 FIG. 14 is a cross-sectional view for explaining the main part of a luminaire 3g according to the seventh embodiment. Note that components having the same functions and actions as those of the luminaire 3 according to the first embodiment are given the same reference numerals and their explanation is omitted. The luminaire 3g according to the seventh embodiment differs from the luminaire 3 mainly in that the configuration of the storage section 13g is different from the configuration of the storage section 13 of the luminaire 3 according to the first embodiment. Therefore, the following explanation will mainly focus on the configuration of the storage section 13g. Note that the configuration and functions of the storage section 13g other than those described below are essentially the same as those of the storage section 13 according to the first embodiment.

[0200] [Lighting 3g] The luminaire 3g is turned on by power supplied from the device 2. The luminaire 3g has a housing portion 13g, a base 40g, a base 50g, and a light source 60.

[0201] (Storage section 13g) The storage section 13g is a cover for the light source 60. The storage section 13g is formed in a long, hollow cylindrical shape, and both ends in the longitudinal direction (X-axis direction) are open. The storage section 13g is attached to a base 50g. When an outer shell 30g of the storage section 13g is attached to the base 50g, the storage section 13g stores the light source 60 together with the base 50g inside. The storage section 13g has an outer shell 30g, a light distribution control section 31, and an attachment section 33g.

[0202] (Outer shell 30g) The outer shell 30g of the housing 13g is a part that constitutes a part of the outer circumferential wall of the housing 13g that is formed in a cylindrical shape. The outer shell 30g of the seventh embodiment is not cylindrical. The outer shell 30g is formed along the longitudinal direction (X-axis direction) and is formed in a gutter shape with a longitudinal opening on the side of the luminaire 3g. As shown in FIG. 14, the outer shell 30g is formed in a horseshoe shape in a vertical cross section to the longitudinal direction (X-axis direction) of the luminaire 3g. In other words, the outer shell 30g is formed in a U-shape or a circular arc shape in a vertical cross section to the longitudinal direction (X-axis direction) of the luminaire 3g.

[0203] An outer shell 30g of the housing section 13g accommodates the light source 60 therein. An inner peripheral portion 300 of the outer shell 30g constitutes a surface facing the light source 60 arranged inside the outer shell 30g. An outer peripheral portion 301 of the outer shell 30g is a surface facing the illumination space and constitutes a surface not facing the light source 60.

[0204] The outer shell 30g of the housing 13g is translucent. The outer shell 30g is attached to the base 50g in a state where it covers the light source 60 so as to intersect with the optical axis of the light source 60. A longitudinal opening formed on the device side of the outer shell 30g is closed by the base 50g. The outer shell 30g of the housing 13g has an emission part 32.

[0205] (Light distribution control unit 31) The light distribution control unit 31 controls the light distribution of light emitted from the light source 60 in the luminaire 3g. In a cross section perpendicular to the longitudinal direction (X-axis direction) of the outer casing 30g, the light distribution control unit 31 has a base end 310 at one end and a tip end 311 at the other end. The tip end 311 of the light distribution control unit 31 restricts the movement of the base main part 51 in the rotational direction. In one aspect of the luminaire 3g according to the seventh embodiment illustrated in FIG. 14, the light distribution control unit 31 is formed so that the light distribution angle θ, which is the light distribution control range, is 140°.

[0206] (Mounting part 33g) The mounting portion 33g engages with an engagement portion 53g formed on the base 50g when the outer shell 30g is attached to the base 50g. The outer shell 30g of the housing 13g is attached to the base 50g by engaging the engagement portion 53g of the base 50g with the mounting portion 33g that is the opening end of the outer shell 30g. The mounting portions 33g are formed in pairs so as to be located on both sides of the substrate 62 of the light source 60 in the short-side direction (Y-axis direction) of the lamp 3g. When the mounting portion 33g and the engagement portion 53g are engaged with each other, the mounting portion 33g restricts the movement of the engaged base 50g in the rotational direction.

[0207] In a vertical cross section relative to the longitudinal direction (X-axis direction) of the storage section 13g, the pair of mounting parts 33g protrude from both ends of the outer shell 30g. In a vertical cross section relative to the longitudinal direction (X-axis direction) of the storage section 13g, the pair of mounting parts 33g protrude from the outer shell 30g so that their tips face each other. In a vertical cross section relative to the longitudinal direction (X-axis direction) of the lamp 3g, the pair of mounting parts 33g each extend in the short side direction (Y-axis direction) of the lamp 3g. In a vertical cross section relative to the longitudinal direction (X-axis direction) of the lamp 3g, the pair of mounting parts 33g each protrude from the end of the outer shell 30g toward the base side part 52g of the base 50g.

[0208] The attachment portion 33g is formed so as to extend over the entire longitudinal direction of the storage portion 13g. The attachment portion 33g is formed at a position offset toward the device side from the axis of the center O, which is parallel to the longitudinal direction of the storage portion 13g. The attachment portion 33g is formed on the opposite side of the storage portion 13g to the base end portion 310 of the light distribution control portion 31 with respect to the geometric center in the direction along the optical axis.

[0209] (40g nozzle) The base 40g includes a base housing 41g that corresponds to the cross-sectional shape of the housing 13g. That is, the base 40g includes a base housing 41g that corresponds to the cross-sectional shapes of the outer casing 30g and the base 50g. The base 40f constituting the lamp 3g of the seventh embodiment is formed in a shape that fits into the outer peripheral wall of the housing 13g that is constituted by the outer casing 30g and the base 50g.

[0210] (Base 50g) The base 50g is a member to which the light source 60 is attached, and is a heat dissipation member that dissipates heat generated from the light source 60. The base 50g is also a member for holding the light source 60 in the housing portion 13g.

[0211] The base 50g is formed in an elongated shape along the longitudinal direction (X-axis direction) of the housing portion 13g. The base 50g has a base main portion 51, a pair of base side portions 52g, a pair of engagement portions 53g, a pair of screw fixing portions 54, and a base connecting portion 57 provided between the pair of engagement portions 53g, which are integrated together. The base main portion 51, the base side portions 52g, the engagement portions 53g, the screw fixing portions 54, and the base connecting portion 57 are formed to extend over the entire longitudinal direction (X-axis direction) of the base 50g.

[0212] The base main part 51 has a light source attachment part 510 to which the substrate 62 of the light source 60 is attached, and protrusions 511 formed on both ends of the light source attachment part 510 in the short side direction of the base main part 51 (Y-axis direction).

[0213] When the base 50g and the outer shell 30g are fixed to each other, the tip of the overhanging portion 511 in the protruding direction faces the inner periphery 300 of the outer shell 30g. When the base 50g and the outer shell 30g are fixed to each other, the device-side surface of the overhanging portion 511 faces the emission-side surface of the mounting portion 33, and the emission-side surface of the overhanging portion 511 faces the tip 311 of the light distribution control portion 31. In the thickness direction (Z-axis direction) of the base 50g, a gap is formed between the overhanging portion 511 and the engagement portion 53g.

[0214] At both ends of the light source attachment portion 510 in the short side direction (Y-axis direction), base side portions 52g are provided that protrude toward the fixture side. An engagement portion 53g is provided at the tip of the base side portion 52g. When the outer case 30g is attached to the base 50g, the engagement portion 53g engages with the attachment portion 33g formed on the outer case 30g. When the attachment portion 33g and the engagement portion 53g are engaged with each other, the engagement portion 53g restricts the movement of the engaged base 50g in the rotational direction.

[0215] The engagement portion 53g is formed in an area of ​​the base 50g where the light source 60 is not arranged. The engagement portion 53g is formed on the side where the light source 60 is not arranged, i.e., on the fixture side of the base 50g. The engagement portion 53g is formed so as to extend over the entire longitudinal direction of the base 50g.

[0216] When the base 50g and the outer shell 30g are fixed to each other, the engaging portion 53g is disposed at a position offset toward the instrument side from the axis of the center O of the housing portion 13g. Also, when the base 50g and the outer shell 30g are fixed to each other, the engaging portion 53g is disposed along the inner periphery 300 of the outer shell 30g.

[0217] A pair of screw fixing parts 54 are provided protruding toward the fixture side on the surface located on the fixture side of the light source attachment part 510. A screw fixing hole 540 is formed between the screw fixing parts 54.

[0218] A base connection portion 57 is provided between the pair of engagement portions 53g. The base connection portion 57 is provided so as to connect the pair of engagement portions 53g to each other. In other words, the base connection portion 57 is formed so as to connect the tip portions of the pair of base side portions 52g to each other. The base connection portion 57 constitutes a wall portion of the lighting device 1 that faces the fixture 2.

[0219] The base connection part 57 is formed in an arc shape in a cross section perpendicular to the longitudinal direction (X-axis direction) of the luminaire 3g. The base connection part 57 is formed in an arc shape in a cross section perpendicular to the longitudinal direction (X-axis direction) of the luminaire 3g so as to be convex toward the fixture side of the luminaire 3g as shown in Fig. 14. Note that the base connection part 57 is not limited to a configuration in which it is formed in an arc shape in a cross section perpendicular to the longitudinal direction (X-axis direction) of the luminaire 3g.

[0220] The base 50g and the outer casing 30g constitute the outer peripheral wall of the luminaire 3g formed in a cylindrical shape. When the base 40g is attached to both ends of the outer casing 30g, an internal luminaire space 24 surrounded by the outer casing 30g, the base 50g, and the base 40g is formed inside the housing portion 13g as shown in Fig. 14. Furthermore, the internal luminaire space 24 is divided into four spaces by the light distribution control portion 31 and the base 50g. Of these four spaces, the space facing the light source 60 is referred to as the emission side space 25, the space formed within the base 50g is referred to as the internal space 56, and the remaining two spaces are collectively referred to as the fixture side space 26.

[0221] An internal space 56 of the base 50g is formed into a cylindrical shape by the base main part 51, the pair of base side parts 52g, and the base connecting part 57. A screw fixing part 54 protrudes into the internal space 56. Furthermore, as shown in FIG. 14, devices constituting additional functions, such as a lighting device 70, may be disposed in the internal space 56. The lighting device 70 is a power supply device that converts power supplied from an external power source into a voltage or current suitable for the lamp 3g. In other words, the lighting device 70 generates lighting power to be supplied to the light source 60, such as the light-emitting element 61.

[0222] [Effects of the luminaire 3g and the lighting device 1] The luminaire 3g has a pair of light distribution control parts 31 that stand up from the outer casing 30g toward the base 50g with the peripheral part of the emission part 32 as the base end 310, and whose tip end 311 on the opposite side to the base end 310 faces the base 50 and is spaced apart from the light source 60. Therefore, the luminaire 3g can prevent the tip end 311 of the light distribution control part 31 from coming into contact with the light source 60 during assembly or use, and there is no risk of damaging the light source 60. Therefore, the luminaire 3g is not subject to restrictions in the usage environment, and can achieve long-term quality improvement.

[0223] Furthermore, the emission section 32 is formed between the pair of light distribution control sections 31 in the outer casing 30g. In the luminaire 3g, in addition to the light that reaches the emission section 32 directly from the light source 60, light reflected by the light distribution control section 31 reaches the emission section 32. Therefore, compared to a luminaire that does not have a light distribution control section 31, the luminaire 3g can increase the amount of light in a specific direction, such as a direction directly below the light source 60 and the luminaire 3g, and can improve the illuminance in a specific direction, such as a direction directly below the light source 60 and the luminaire 3g.

[0224] Moreover, the outer shell 30g of the housing 13g is attached to the base 50g by engaging an engagement portion 53g of the base 50g with an attachment portion 33g which is an opening end of the outer shell 30g. Therefore, since the outer shell 30g and the base 50g of the lamp 3g are easily assembled, the lamp 3g and the lighting device 1 are easily manufactured, and the productivity of the lamp 3g and the lighting device 1 is improved.

[0225] In addition to the above, the luminaire 3g can achieve the same effects as the luminaire 3 of the embodiment 1. Since the lighting device 1 includes the luminaire 3g, the lighting device 1 can achieve the effects of the luminaire 3g described above.

[0226] Embodiment 8 FIG. 15 is a cross-sectional view for explaining the main part of the luminaire 3h according to the eighth embodiment. The same reference numerals are used for components having the same functions and actions as the luminaire 3 according to the first embodiment, and the explanation thereof is omitted. The luminaire 3h according to the eighth embodiment differs from the luminaire 3 mainly in that the configuration of the storage section 13h is different from the configuration of the storage section 13 of the luminaire 3 according to the first embodiment, and in that the luminaire 3h does not include a base 50. Therefore, the following explanation will mainly focus on the configuration of the storage section 13h. The configuration and functions of the storage section 13h other than those described below are essentially the same as those of the storage section 13 according to the first embodiment.

[0227] [Lighting 3h] The luminaire 3h is turned on by power supplied from the device 2. The luminaire 3h includes a housing portion 13h, a base 40h, and a light source 60h.

[0228] (Housing section 13h) The housing 13h is a cover for the light source 60h. The housing 13h is formed in an elongated hollow cylindrical shape overall, and both ends in the longitudinal direction (X-axis direction) are open. The housing 13h is attached to a substrate 62h of the light source 60h. When the housing 13h is attached to the substrate 62h, the light source 60h is disposed therein. The housing 13h has an outer shell 30h, a light distribution control unit 31h, and a light source holding unit 35.

[0229] (Outer wall 30h) The outer shell 30h covers the light source 60h so as to intersect with the optical axis of the light source 60h. The outer shell 30h is provided between the base ends 310 of the pair of light distribution control parts 31h. The outer shell 30h has an emission part 32 from which the light emitted from the light source 60h is emitted.

[0230] The outer shell 30h is formed in an arc shape in a cross section perpendicular to the longitudinal direction (X-axis direction) of the luminaire 3h. The outer shell 30h is formed in an arc shape so as to be convex toward the emission side of the luminaire 3h, for example, as shown in Fig. 15. Note that the outer shell 30h is not limited to a configuration in which it is formed in an arc shape in a cross section perpendicular to the longitudinal direction (X-axis direction) of the luminaire 3h.

[0231] (Light distribution control unit 31h) The light distribution control section 31h controls the light distribution of the light emitted from the light source 60h in the luminaire 3h. The light distribution control sections 31h stand up from both ends of the outer case 30h and are arranged in parallel in pairs with the optical axis of the light source 60h between them. The light distribution control sections 31h stand up from the inner periphery 300 of the outer case 30h as a base end 310. Each of the pair of light distribution control sections 31h extends from the outer case 30h toward the light source holding section 35 in a cross section perpendicular to the longitudinal direction (X-axis direction) of the outer case 30h. Each of the pair of light distribution control sections 31h extends from the outer case 30h toward the substrate 62h in a cross section perpendicular to the longitudinal direction (X-axis direction) of the outer case 30h.

[0232] In one aspect of the luminaire 3h according to the eighth embodiment illustrated in Fig. 15, the light distribution control section 31h is formed so that the light distribution angle θ, which is the light distribution control range, is 140°. The light distribution control section 31h distributes the light emitted from the light source 60h toward the emission section 32 by reflection, and causes the light to be emitted from the emission section 32 at an angle specified to be smaller than the irradiation angle of the light source 60h.

[0233] In a cross section perpendicular to the longitudinal direction (X-axis direction) of the housing section 13h, the light distribution control section 31h has a base end section 310 that constitutes the periphery of the emission section 32 at one end, and a tip end section 311h that is connected to the light source holding section 35 at the other end. The tip end section 311h is the end section of the light distribution control section 31h on the opposite side to the base end section 310.

[0234] The tip 311h is the other end of the light distribution control section 31h, and is disposed in the housing section 13h at a distance from the light emitting element 61 of the light source 60h. The tip 311h is the end of the light distribution control section 31h on the light source 60h side. In the direction (Z-axis direction) perpendicular to the longitudinal direction (X-axis direction) and lateral direction (Y-axis direction) of the lamp 3h, a substrate 62h is disposed on an extension line of the tip 311h. The tip 311h of the light distribution control section 31h is connected to the light source holding section 35 and is formed integrally with the light source holding section 35.

[0235] (Light source holding part 35) The light source holding portion 35 holds the substrate 62h of the light source 60h in the housing portion 13h. In a cross section perpendicular to the longitudinal direction of the luminaire 3h, the light source holding portion 35 has a bottom portion 35h1 constituting a wall portion on the device side, and a pair of side portions 35h2 standing up from both ends of the bottom portion 35h1. The light source holding portion 35 also has support portions 35h3 extending from the tips of the pair of side portions 35h2 in the standing direction in a direction approaching each other. The pair of support portions 35h3 are formed so that their tips face each other.

[0236] The light source holding part 35 has an opening 35h4 between the pair of support parts 35h3. The light source holding part 35 has a gap between the pair of support parts 35h3 and the bottom part 35h1 in the direction along the optical axis of the light source 60h. The light source 60h is disposed in the gap between the pair of support parts 35h3 and the bottom part 35h1, and the substrate 62h of the light source 60h is sandwiched between the support parts 35h3 and the bottom part 35h1. The light emitting element 61 is exposed to the emission side space 25 from the opening 35h4 formed between the pair of support parts 35h3. The light source holding part 35 is formed in a gutter shape by the bottom part 35h1, the side part 35h2, and the support part 35h3.

[0237] The support portion 35h3 of the light source holding portion 35 is formed along the short-side direction (Y-axis direction) of the lamp 3h in a cross section perpendicular to the long-side direction (X-axis direction) of the lamp 3h, and supports the board 62h of the light source 60h from the emission side of the lamp 3h. The tip portion 311h of the light distribution control portion 31h is connected to the support portion 35h3 of the light source holding portion 35.

[0238] The housing 13h is formed integrally with an outer shell 30h, a light distribution control section 31h, and a light source holding section 35. The housing 13h is formed in a teardrop shape in a cross section perpendicular to the longitudinal direction (X-axis direction) of the luminaire 3h. However, the housing 13h is not limited to this shape. The outer shell 30h, the light distribution control section 31h, and the light source holding section 35 form the outer wall of the housing 13h and face the lighting space.

[0239] (40h cap) The base 40h includes a base housing 41h that corresponds to the cross-sectional shape of the housing 13h. Therefore, the base 40h constituting the lamp 3h of the eighth embodiment is different in aspect from the base 40 of the first embodiment in which the cross-sectional shape of the base housing 41 is formed in a circular shape.

[0240] (light source 60h) The light source 60h has a light emitting element 61 and a board 62h on which the light emitting element 61 is mounted. The light source 60h is disposed inside the housing portion 13h and held by the light source holding portion 35. The board 62h of the lamp 3h according to the eighth embodiment is formed so that the width dimension in the short side direction (Y-axis direction) is smaller than the width dimension of the board 62h of the lamp 3 according to the first embodiment.

[0241] [Effects of luminaire 3h and lighting device 1] The luminaire 3h according to the eighth embodiment does not include the base 50, so that the material cost of the luminaire 3h can be reduced, and the assembly process is simplified, so that the manufacturing cost can be reduced. In addition, the luminaire 3h does not include the base 50, which is generally formed using a metal material, so that the weight of the luminaire 3h can be reduced.

[0242] Furthermore, by not including a base 50, the lighting fixture 3h can increase the distance dimension between the emission portion 32 and the light source 60h inside the storage portion 13h, thereby suppressing the graininess of the light emitted by the light-emitting element 61 that appears at the emission portion 32 of the outer casing 30h.

[0243] The luminaire 3h does not have a base 50 that functions as a heat sink, and is therefore suitable as a luminaire with low output and reduced heat generation, or as a luminaire suitable for installation in environments that do not require high thermal capacity, such as low-temperature environments.

[0244] In addition to the above, the luminaire 3h can achieve the same effects as the luminaire 3 of the embodiment 1. Since the lighting device 1 includes the luminaire 3h, the lighting device 1 can achieve the effects of the luminaire 3h described above.

[0245] In addition, the base 40h in embodiment 8 has been described as having a base housing 41h that corresponds to the cross-sectional shape of the accommodating section 13h, but this is not limited thereto. The base housing 41h may be attached to the outer housing 30h so as to cover the end opening of the outer housing 30h, and the cross-sectional shape of the base housing 41h may be formed in a circular shape like the base housing 41 in embodiment 1.

[0246] Embodiment 9 Fig. 16 is a perspective view illustrating an illumination device 1j according to embodiment 9. Fig. 17 is a cross-sectional view illustrating a main part of a luminaire 3j according to embodiment 9. Note that components having the same functions and actions as those of the illumination device 1 and luminaire 3 according to embodiment 1 are given the same reference numerals and their description will be omitted.

[0247] [Lighting device 1j] The lighting device 1j is an elongated lighting device that is installed at a position where it can illuminate the lighting space and illuminates the lighting space. The lighting device 1j has a fixture 2j that is attached to a construction part 9 such as a ceiling, and a lamp 3j that is detachably attached to the fixture 2j.

[0248] [Apparatus 2j] The fixture 2j holds the attached lighting fixture 3j and supplies power to the lighting fixture 3j attached to the fixture 2j. The fixture 2j has a long fixture body 20j extending in the longitudinal direction (X-axis direction) and fixture end parts 21j attached to both ends of the fixture body 20j.

[0249] A fixture outer surface portion 202j inclined with respect to a horizontal plane such as a ceiling is provided on a side surface located in the short side direction (Y axis direction) of the fixture body 20j. The fixture outer surface portion 202j extends along the longitudinal direction (X axis direction) of the fixture body 20j.

[0250] The fixture end 21j is provided with a knockout portion 210j. The knockout portion 210j is formed so that an insertion port for a power line (not shown) to be inserted from the construction section 9 side into the fixture 2j can be selected.

[0251] As shown in Fig. 16, the fixture 2j is formed with a lamp mounting section 200, which is a space for accommodating the lamp 3j. The lamp mounting section 200 is provided with a connecting spring 27, a terminal block 28, and a lamp-side electric wire 23 including a power supply line and a control signal line. The lamp-side electric wire 23 is electrically connected to a lamp-side electric wire (not shown) provided in the lamp 3j. The lamp-side electric wire includes a power supply line and a control signal line.

[0252] [Lamp 3j] The lighting fixture 3j is turned on by power supplied from the fixture 2j. The lighting fixture 3j is attached to the fixture 2j so as to face the fixture body 20j. The lighting fixture 3j is fixed to the fixture 2j by connecting the connecting spring 27 of the fixture 2j and the spring receiving metal fitting 71 of the lighting fixture 3j. The connecting spring 27 is a connecting tool on the fixture side, and the spring receiving metal fitting 71 is a connecting tool on the lighting fixture side. The lighting fixture 3j has a housing portion 13j, an end cover 43, a base 50j, and a light source 60j. The lighting fixture 3j is formed into a cylindrical shape by the housing portion 13j and the base 50j.

[0253] (Housing section 13j) The storage section 13j is formed in a long gutter shape, and is open on the side of the fixture 2j and both ends in the longitudinal direction (X-axis direction). The opening on the side of the fixture 2j of the storage section 13j is a longitudinal opening 34j formed along the longitudinal direction (X-axis direction) of the storage section 13j. A pedestal 50j (described later) is disposed in the longitudinal opening 34j, and the pedestal 50j covers the longitudinal opening 34j. The storage section 13j has an outer shell 30j, a light distribution control section 31j, and an attachment section 33j.

[0254] (Outer hull 30j) The outer wall 30j of the housing portion 13j is a gutter-shaped portion of the housing portion 13j. The outer wall 30j is formed in the shape of a part of an ellipse in a cross section perpendicular to the longitudinal direction (X-axis direction) of the housing portion 13j. However, the shape of the outer wall 30j is not limited to this shape, and may be formed in other shapes such as a circular arc shape or a polygonal shape.

[0255] The outer shell 30j of the housing 13j accommodates the light source 60j inside when attached to the base 50j. The inner periphery 300j of the outer shell 30j constitutes the surface facing the light source 60j arranged inside the outer shell 30j. The outer periphery 301j of the outer shell 30j constitutes the surface facing the illumination space and not facing the light source 60j.

[0256] The outer wall 30j of the housing 13j has translucency. The outer wall 30j may be formed of, for example, a transparent material, or may be formed of a material that diffuses light passing through the outer wall 30j. The outer wall 30j is attached to the base 50j in a state where it covers the light source 60j so as to intersect with the optical axis of the light source 60j.

[0257] The outer shell 30j of the housing 13j has an emission section 32j. The emission section 32j is a portion of the outer shell 30j from which light emitted from the light source 60j is emitted. The emission section 32j is formed between a pair of light distribution control sections 31j in the outer shell 30j. The emission section 32j is formed on the emission side of the lamp 3j.

[0258] In a cross section perpendicular to the longitudinal direction of the outer casing 30j, the angle between an imaginary line LA connecting the geometric center O of the outer casing 30j to one end 32a of the emission section 32j and an imaginary line LB connecting the geometric center O of the outer casing 30j to the other end 32b of the emission section 32 is defined as the light distribution angle θ. The light distribution angle θ is specified as an angle smaller than the irradiation angle of the light source 60j itself.

[0259] The reflectance of the emitting portion 32j is lower than the reflectance of the inner surface portion 312j of the light distribution control portion 31j. The emitting portion 32j has a light transmittance higher than at least the inner surface portion 312j of the light distribution control portion 31j. The emitting portion 32j transmits and directly emits the light emitted from the light source 60j, and transmits and emits the light emitted from the light source 60j and whose light distribution is controlled by the light distribution control portion 31j. That is, the light emitted from the light source 60j and whose light distribution is controlled by the light distribution control portion 31j is irradiated from the emitting portion 32j to the illumination space. The material of the emitting portion 32j is formed of the same material as the emitting portion 32 of the luminaire 3 according to the first embodiment.

[0260] (Light distribution control unit 31j) The light distribution control unit 31j controls the light distribution of the light emitted from the light source 60j in the luminaire 3j. The light distribution control unit 31j controls the direction of the light emitted from the light source 60j so that the light emitted from the light source 60j is emitted from the emission unit 32j. That is, the pair of light distribution control units 31j distributes the light emitted from the light source 60j toward the emission unit 32j by reflection, and emits the light from the emission unit 32j at an angle set to a smaller angle than the irradiation angle of the light source 60j.

[0261] The light distribution control units 31j stand up from the outer shell 30j and are arranged side by side in pairs with the optical axis of the light source 60j between them. The light distribution control units 31j stand up from the inner periphery 300j of the outer shell 30j as a base end 310j. The light distribution control units 31j extend from the outer shell 30j toward the inside of the outer shell 30j in a cross section perpendicular to the longitudinal direction (X-axis direction) of the outer shell 30j. More specifically, each of the pair of light distribution control units 31j extends from the outer shell 30j toward the pedestal 50j in a cross section perpendicular to the longitudinal direction (X-axis direction) of the outer shell 30j.

[0262] Light distribution control section 31j has a base end section 310j at one end and a tip end section 311j at the other end in a cross section perpendicular to the longitudinal direction (X-axis direction) of outer wall 30j.

[0263] The base end 310j is one end of the light distribution control unit 31j and constitutes the peripheral portion of the emission unit 32j. The base end 310j is a connection portion between the light distribution control unit 31j and the inner peripheral portion 300j of the outer shell 30j, and is an end portion on the outer shell 30j side. The base end 310j is also a root portion of the light distribution control unit 31j.

[0264] The tip 311j is the other end of the light distribution control section 31j, and is disposed in the housing section 13j at a distance from the light source 60j, and faces the base 50j. The tip 311j is the end of the light distribution control section 31j on the base 50j side. The tip 311j faces the base 50j in a direction (Z-axis direction) perpendicular to the longitudinal direction (X-axis direction) and lateral direction (Y-axis direction) of the lamp 3j. The tip 311j may be in contact with the base 50j or may be spaced apart from the base 50j. The tip 311j restricts the movement of the base 50j in the rotational direction.

[0265] The tip 311j of the light distribution control section 31j is disposed so as to face any part of the base main section 51j other than the light source attachment section 510j. In other words, the tip 311j of the light distribution control section 31j is disposed outside the light source 60j in the direction intersecting the optical axis (short side direction) and outside the substrate 62j.

[0266] Considering the purpose of increasing the illuminance directly below the light source 60j and the luminaire 3j, the tip end 311j is not positioned outside a reference line passing through the base end 310j along the optical axis in the short direction (Y-axis direction).

[0267] In addition, when the light emitted from the light source 60j to spread outward is attenuated and the light close to the optical axis of the light source 60j is selectively utilized, in the short direction (Y-axis direction), the tip end 311j is positioned outside the reference line passing through the base end 310j along the optical axis.

[0268] The light distribution control section 31j is formed so as to extend over the entire longitudinal direction of the housing section 13j. The light distribution control section 31j is formed in a plate shape so as to extend along the longitudinal direction (X-axis direction) of the outer case 30j. The light distribution control section 31j has an inner surface section 312j and an outer surface section 313j. The inner surface section 312j forms the surface on the side on which the optical axis is formed inside the outer case 30j. The inner surface section 312j may be any of a flat surface, a curved surface, and a combination of a flat surface and a curved surface. The outer surface section 313j forms the surface on the opposite side to the side on which the optical axis is formed inside the outer case 30j.

[0269] The light distribution control section 31j is formed so that at least the reflectance of the inner surface 312j of the light distribution control section 31j is higher than the reflectance of the emission section 32j of the outer case 30j. In other words, the light distribution control section 31j is formed so that at least the light transmittance of the inner surface 312j of the light distribution control section 31j is lower than the light transmittance of the emission section 32j of the outer case 30j. The material of the inner surface 312j is made of the same material as the inner surface 312 of the lamp 3 according to the first embodiment.

[0270] The light distribution control section 31j is formed integrally with the outer casing 30j so as to satisfy the light distribution angle θ determined according to the product specifications. The light distribution angle θ is also an angle defined as the angle on the side of the emission section 32 between the geometric center O of the outer casing 30j and the base ends 310j of the pair of light distribution control sections 31j. For the purpose of increasing the illuminance directly below the light source 60j and the luminaire 3j, it is desirable that the light distribution angle θ be defined within an angle range of 45°≦θ≦140°.

[0271] The angle between the light distribution control part 31j and the inner periphery 300j of the outer casing 30j is arbitrary. The angle between the light distribution control part 31j and the inner periphery 300j of the outer casing 30j may be an acute angle, a right angle, or an obtuse angle. In addition, the base end part 310j of the light distribution control part 31j may be provided with a skirt-shaped, i.e., inversely tapered, reinforcing part.

[0272] (Mounting part 33j) The mounting portion 33j is engaged with an engagement portion 53j formed on the base 50j when the accommodation portion 13j is attached to the base 50j. When the mounting portion 33j and the engagement portion 53j are engaged with each other, the mounting portion 33j restricts the movement of the engaged base 50j in the rotational direction.

[0273] The attachment portion 33j is provided on a side edge portion 30j1 of the outer shell 30j. The side edge portion 30j1 is an end portion of the outer shell 30j on the side of the appliance 2j. The side edge portion 30j1 is provided along the longitudinal direction (X-axis direction) of the outer shell 30j.

[0274] The mounting portion 33j is formed so as to extend over the entire longitudinal direction of the storage portion 13j. The mounting portion 33j is formed at a position offset toward the fixture side from the axis of the center O parallel to the longitudinal direction of the storage portion 13j. The mounting portion 33j is formed on the opposite side to the base end portion 310j of the light distribution control portion 31j with respect to the geometric center along the optical axis direction.

[0275] The mounting portion 33 engages with both ends of the base 50j in the short side direction (Y-axis direction). The mounting portion 33j has a first mounting piece 330j and a second mounting piece 331j. In the mounting portion 33j, the first mounting piece 330j and the second mounting piece 331j are formed to face each other.

[0276] The first mounting piece 330j is engaged with a base end 52j1 of a base side portion 52j formed on the base 50j when the accommodation portion 13j is attached to the base 50j. The second mounting piece 331j is engaged with an engagement portion 53j formed on the base 50j when the accommodation portion 13j is attached to the base 50j. The first mounting piece 330j and the second mounting piece 331j of the mounting portion 33j sandwich the area from the base end 52j1 to the engagement portion 53j of the base 50j. That is, the base side portion 52j of the base 50j is sandwiched between the first mounting piece 330j and the second mounting piece 331j.

[0277] (End cover 43) The end caps 43 are attached to both ends of the housing 13j. More specifically, the end caps 43 are attached to both ends of the outer shell 30j. The end caps 43 cover openings formed at both ends of the outer shell 30j. The end caps 43 are made of, for example, an insulating resin material. Note that, when insulation is ensured, the end caps 43 may be made of metal.

[0278] (Pedestal 50j) The base 50j is a member to which the light source 60j is attached, and is a heat dissipation member that dissipates heat emitted from the light source 60j. The base 50j is also a member for holding the light source 60j in the housing portion 13j.

[0279] The base 50j is formed in an elongated shape along the longitudinal direction (X-axis direction) of the storage section 13j, and includes a base main portion 51j, a pair of base side portions 52j, and a pair of engagement portions 53j, which are integrated together. The base main portion 51j, the base side portions 52j, and the engagement portions 53j are formed to extend over the entire longitudinal direction (X-axis direction) of the base 50j.

[0280] The base 50j functions as a heat sink that dissipates heat generated from the light source 60j to the outside of the lamp 3j via the outer casing 30j. Therefore, it is preferable that the base 50j is made of a metal material that has excellent thermal conductivity and rigidity and a small linear thermal expansion coefficient. The base 50j is formed, for example, using a metal plate. Furthermore, a highly reflective film having a higher reflectance than the material of the base 50j may be formed on the surface of the light exit side of the base 50j.

[0281] The base main part 51j has a light source attachment part 510j and protruding parts 511j formed on both ends of the light source attachment part 510j in the short side direction (Y-axis direction) of the base main part 51j. In other words, the light source attachment part 510j is formed between the two protruding parts 511j.

[0282] The substrate 62j of the light source 60j is attached to the light source attachment portion 510j. The light source attachment portion 510j is a portion formed in a concave shape in the base main portion 51j. The light source attachment portion 510j is formed so as to bulge toward the fixture side with respect to the overhang portion 511j. The light source attachment portion 510j is formed, for example, by bending a member. The light source attachment portion 510j is formed so as to be recessed with respect to the emission side surface of the overhang portion 511j.

[0283] The mounting surface of the light source attachment portion 510j on which the substrate 62j is mounted is formed in a flat shape. The base main portion 51j has a step formed between the mounting surface of the light source attachment portion 510j on which the substrate 62j is mounted and the emission side surface of the protruding portion 511j. The light source attachment portion 510 is formed to extend over the entire longitudinal direction (X-axis direction) of the base 50j.

[0284] When the base 50j is fixed to the outer shell 30j, the substrate 62j is installed on the surface located on the emission side of the light source attachment portion 510j. The substrate 62j may be installed on the base 50j by bonding the substrate 62j to the base 50j with an adhesive such as an adhesive or double-sided tape. Alternatively, the substrate 62j may be installed on the base 50j by forming a screw hole in the base 50j and fastening the substrate 62j to the base 50j with a screw. The method of fixing the substrate 62j to the base 50j is not limited to the above method.

[0285] As shown in Fig. 17, a lighting device 70j may be disposed on the surface of the light source attachment section 510j opposite to the surface on which the substrate 62j is disposed. The lighting device 70j is disposed in the lamp mounting section 200 of the lighting device 1j. The lighting device 70j is a power supply device that converts power supplied from an external power source into a voltage or current suitable for the lamp 3j. In other words, the lighting device 70j generates lighting power to be supplied to the light source 60j such as the light-emitting element 61.

[0286] 17, the light source attachment portion 510j has, at both ends in the short side direction (Y-axis direction), protruding portions 511j protruding outward in the short side direction. The protruding portions 511j are formed so as to extend over the entire length of the base 50j.

[0287] At both ends in the short side direction (Y-axis direction) of the base main part 51j, base side parts 52j are provided which stand up towards the fixture side. The base side parts 52j are walls extending from the base main part 51j towards the fixture side and in the longitudinal direction (X-axis direction) of the base 50j. The base side parts 52j are formed on the side edges of the overhanging part 511j. The side edges of the overhanging part 511j are ends of the overhanging part 511j in a cross section perpendicular to the longitudinal direction (X-axis direction) of the base 50j. The ends of the overhanging part 511j are ends of the overhanging part 511j on the side opposite to the side where the light source attachment part 510j is formed.

[0288] The base end 52j1 of the base side portion 52j is a portion where the base side portion 52j stands up relative to the base main portion 51j. The base end 52j1 is a corner portion formed by the base main portion 51j and the base side portion 52j. The base main portion 51j and the base side portion 52j may be formed by bending. When the storage portion 13j is attached to the base 50j, the base end 52j1 is engaged with a first attachment piece 330j of the attachment portion 33j formed on the storage portion 13j.

[0289] An engagement portion 53j is provided at the tip of the base side portion 52j. When the accommodation portion 13j is attached to the base 50j, the engagement portion 53j engages with a second attachment piece 331j of the attachment portion 33j formed on the accommodation portion 13j. The engagement portion 53j is formed by bending the tip of the base side portion 52j toward the base main portion 51j. When the attachment portion 33j and the engagement portion 53j are engaged with each other, the engagement portion 53j restricts the movement of the engaged base 50j in the rotational direction.

[0290] The engagement portion 53j is formed in an area of ​​the storage portion 13j where the light source 60j is not arranged. The engagement portion 53j is formed on the side where the light source 60j is not arranged, i.e., on the fixture side of the base 50j. The engagement portion 53j is formed so as to extend over the entire longitudinal direction of the base 50j. The engagement portion 53j is arranged in the lamp 3j at a position biased toward the fixture side from the axis of the center O of the storage portion 13j. The engagement portion 53j is arranged in the lamp mounting portion 200 when the lamp 3j is attached to the fixture 2j.

[0291] The engaging portion 53j, the base side portion 52j, and the base end portion 52j1 of the base 50j are held by the mounting portion 33 of the storage portion 13j. The engaging portion 53j, the base side portion 52j, and the base end portion 52j1 are held by the mounting portion 33j of the storage portion 13j, whereby the base 50j and the storage portion 13j are fixed to each other.

[0292] (Light source 60j) The light source 60j includes a light emitting element 61 that emits light, and a long, flat board 62j on which the light emitting element 61 is mounted. The light source 60j is disposed on the opposite side to the emission unit 32j with respect to the center O of the housing unit 13j in the direction along the optical axis. The distance between the light source 60j and the emission unit 32j may be greater than or equal to the distance between the base ends 310j of the pair of light distribution control units 31j. The basic configuration of the board 62j other than the dimensions is the same as that of the board 62 of the light source 60 according to the first embodiment.

[0293] [Effects of the luminaire 3j and the lighting device 1j] The luminaire 3j exerts the same effect as the luminaire 3 of the above-mentioned embodiment 1. For example, the luminaire 3j has a pair of light distribution control parts 31j, each of which has a peripheral part of the emission part 32j as a base end 310j and stands up from the outer shell 30j toward the base 50j, and has a tip end 311j on the opposite side of the base end 310j, spaced apart from the light source 60j and arranged to face the base 50j. Therefore, the luminaire 3j can prevent the tip end 311j of the light distribution control part 31j from coming into contact with the light source 60j during assembly or use, and there is no risk of damaging the light source 60j.

[0294] The luminaire 3j also has a pair of light distribution control sections 31j that stand up from the outer casing 30j and are arranged side by side with the optical axis of the light source 60j between them. The light distribution control section 31j distributes the light emitted from the light source 60j toward the emission section 32j by reflection, and emits the light from the emission section 32j at an angle that is set to be smaller than the irradiation angle of the light source 60j. The luminaire 3j can increase the amount of light in a specific direction, such as a direction directly below the light source 60j and the luminaire 3j, by making the light reflected by the light distribution control section 31j reach the emission section 32j in addition to the light that reaches the emission section 32j directly from the light source 60j. Therefore, the luminaire 3j can improve the illuminance in a specific direction, such as a direction directly below the light source 60j and the luminaire 3j.

[0295] In addition to the above, the luminaire 3j can achieve the same effects as the luminaire 3 of the embodiment 1. Since the illumination device 1j includes the luminaire 3j, the illumination device 1j can achieve the effects of the luminaire 3j described above.

[0296] Although the embodiments and modifications have been described above, two or more of these embodiments and modifications may be combined and implemented. Alternatively, one of these embodiments and modifications may be partially implemented. Alternatively, two or more of these embodiments and modifications may be partially combined and implemented. Note that the present disclosure is not limited to these embodiments and modifications, and various modifications are possible as necessary. [Explanation of symbols]

[0297] 1 lighting device, 1j lighting device, 2 fixture, 2j fixture, 3 luminaire, 3a luminaire, 3b luminaire, 3c luminaire, 3d luminaire, 3e luminaire, 3f luminaire, 3g luminaire, 3h luminaire, 3j luminaire, 9 construction section, 13 housing section, 13a housing section, 13b housing section, 13c housing section, 13d housing section, 13e housing section, 13f housing section, 13g housing section, 13h housing section, 13j housing section, 20 fixture body, 20j fixture body, 21 socket, 21j fixture end, 22 lighting device, 23 fixture side electric wire, 24 luminaire internal space, 25 emission side space, 26 fixture side space, 27 connecting spring, 28 terminal block, 30 outer casing, 30c outer casing, 30d Outer shell, 30e outer shell, 30f outer shell, 30f1 first outer shell, 30f2 second outer shell, 30g outer shell, 30h outer shell, 30j outer shell, 30j1 side edge portion, 31 light distribution control portion, 31a light distribution control portion, 31b light distribution control portion, 31f light distribution control portion, 31h light distribution control portion, 31j light distribution control portion, 32 exit portion, 32a end portion, 32b end portion, 32e exit portion, 32j exit portion, 33 mounting portion, 33e mounting portion, 33g mounting portion, 33j mounting portion, 34e bottom portion, 34j longitudinal opening, 35 light source holding portion, 35f outer surface portion, 35h1 bottom portion, 35h2 side portion, 35h3 support portion, 35h4 opening portion, 40 base, 40c Base, 40d base, 40e base, 40f base, 40g base, 40h base, 41 base housing, 41e base housing, 41f base housing, 41g base housing, 41h base housing, 42 base terminal, 43 end cover, 50 base, 50a base, 50b base, 50e base, 50g base, 50j base, 51 base main part, 51b base main part, 51e base main part, 51j base main part, 52 base side part, 52g base side part, 52j base side part, 52j1 base end part, 53 engagement part, 53e engagement part, 53g engagement part, 53j engagement part, 54 screw fixing part, 55 base cover part, 56 Internal space, 57 base connection portion, 60 light source, 60h light source, 60j light source, 61 light emitting element, 62 board, 62h board, 62j board, 70 lighting device, 70j lighting device, 71 spring receiving metal fitting, 81 screw, 200 lighting device mounting portion, 202j fixture outer surface portion, 210j knockout portion, 300 inner periphery, 300j inner periphery, 301 outer periphery, 301j outer periphery, 302 end opening, 310 base end portion, 310jBase end, 311 tip, 311a tip, 311b tip, 311f tip, 311h tip, 311j tip, 312 inner surface, 312a inner surface, 312j inner surface, 313 outer surface, 313a outer surface, 313f outer surface, 313j outer surface, 330 first mounting piece, 330j first mounting piece, 331 second mounting piece, 331j second mounting piece, 350 base end, 351 tip, 410 bottom, 411 periphery, 412 screw insertion hole, 510 light source mounting portion, 510b light source mounting portion, 510j light source mounting portion, 511 extension, 511e extension, 511j extension, 512 groove, 513 Partition wall, 530 first engagement piece, 531 second engagement piece, 540 screw fixing hole, 620 mounting surface, 621 non-mounting surface.

Claims

1. a light source having a light emitting element and a substrate on which the light emitting element is mounted; a base having an elongated base main portion for holding the light source, a pair of base side portions provided on each of side edges in a short direction of the base main portion, and a pair of engagement portions provided on tip portions of each of the pair of base side portions on a side opposite to the base main portion; a housing having a long outer shell that covers the light source, attachment portions provided on each of side edges in a short direction of the outer shell and engaged with the pair of engagement portions, and a pair of light distribution control portions provided along the longitudinal direction of the outer shell with an optical axis of the light source therebetween; Equipped with Each of the pair of light distribution control units is A lighting fixture that is formed so that, in a cross section perpendicular to the longitudinal direction of the outer shell, the distance between the tip ends, which are the ends on the base side, is smaller than the distance between the base ends, which are the ends on the outer shell side.

2. Each of the tips is The lamp according to claim 1 , wherein the light emitting element is disposed outside the light emitting element in a cross section perpendicular to the longitudinal direction of the outer casing.

3. Each of the tips is 3. The lamp according to claim 1, wherein the outer shell is disposed outside the substrate in a cross section perpendicular to the longitudinal direction of the outer shell.

4. A lamp according to any one of claims 1 to 3, An appliance to be attached to the construction section and to which the lighting device is attached; A lighting device comprising:

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