Illumination device

Abstract

To provide an illumination device capable of suppressing generation of noise due to stick-slip phenomenon more than before.SOLUTION: An illumination device includes: a light source part; a lighting fixture having a translucent outer shell part for covering the light source part; and a fixture to which the lighting fixture is detachably fitted. When a portion opposing the fixture in the outer shell part in a state that the lighting fixture is fitted to the fixture is a lighting fixture side opposite portion, and a portion opposing the lighting fixture side opposite portion in the fixture in a state that the lighting fixture is fitted to the fixture is a fixture side opposite portion, provided are a plurality of contacts parts which are integrally formed with the lighting fixture side opposite portion so as to project to the fixture side opposite portion, and whose at least a part linearly contacts the fixture side opposite portion in a state that the lighting fixture is fitted to the fixture.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present disclosure relates to a lighting device configured to suppress the generation of abnormal noise.

Background Art

[0002] A conventional lighting device attached to an attachment portion such as a ceiling includes a fixture attached to the attachment portion and a lamp detachably attached to the fixture. The lamp further includes a light source unit and a translucent outer portion covering the light source unit (see, for example, Patent Document 1).

[0003] In such a conventional lighting device, when the lamp is attached to the fixture, a part of the outer portion faces a part of the fixture. Hereinafter, the portion of the outer portion facing the fixture is referred to as the lamp-side facing portion. The portion of the fixture facing the lamp-side facing portion is referred to as the fixture-side facing portion. When the lamp is attached to the fixture, the conventional lighting device is configured such that the lamp-side facing portion and the fixture-side facing portion come into contact with each other.

[0004] For example, in the case of the lighting device described in Patent Document 1, the fixture has a recess that is recessed upward from the lower surface and houses a part of the lamp. The outer portion of the lamp is provided with an extension portion that protrudes laterally below the portion housed in the recess of the fixture. When the lamp is attached to the fixture, the extension portion of the outer portion of the lamp contacts the portion of the lower surface of the fixture that faces the extension portion. That is, in the case of the lighting device described in Patent Document 1, the extension portion of the outer portion of the lamp serves as the lamp-side facing portion, and the portion of the lower surface of the fixture that faces the extension portion serves as the fixture-side facing portion.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] As described above, when the luminaire is attached to the fixture, in the conventional lighting device, the luminaire-side facing portion and the fixture-side facing portion come into contact with each other. That is, when the luminaire is attached to the fixture, in the conventional lighting device, a part of the outer shell portion and a part of the fixture come into contact with each other. Here, the outer shell portion and the fixture are formed of materials having different linear expansion coefficients. In other words, the outer shell portion and the fixture are formed of materials having different expansion and contraction rates. For example, the outer shell portion of the luminaire is formed of a resin such as acrylic resin. Also, for example, the fixture is formed of metal. Therefore, due to the influence of the operating heat during the use of the lighting device, or the influence of the installation environment of the lighting device, etc., the outer shell portion and the fixture exhibit different amounts of expansion and contraction. Accordingly, at the contact location between the luminaire-side facing portion and the fixture-side facing portion, the outer shell portion is distorted by the frictional force generated between the luminaire-side facing portion and the fixture-side facing portion. And when the so-called stick-slip phenomenon in which the distortion of the outer shell portion is released occurs, abnormal noise is generated. For this reason, the conventional lighting device has a problem that suppression of abnormal noise due to the stick-slip phenomenon is desired.

[0007] The present disclosure has been made to solve the above-described problems, and an object thereof is to obtain a lighting device capable of suppressing the generation of abnormal noise due to the stick-slip phenomenon more than before.

Means for Solving the Problems

[0008] The lighting device according to the present disclosure is a lighting device including a light source unit, a luminaire having a light-transmissive outer shell portion covering the light source unit, and a fixture to which the luminaire is detachably attached. In a state where the luminaire is attached to the fixture, a location on the outer shell portion facing the fixture is defined as a luminaire-side facing portion, and in a state where the luminaire is attached to the fixture, a location on the fixture facing the luminaire-side facing portion is defined as a fixture-side facing portion. A plurality of contact portions are integrally formed with the luminaire-side facing portion so as to protrude toward the fixture-side facing portion and, in a state where the luminaire is attached to the fixture, at least a part of the plurality of contact portions is in linear contact with the fixture-side facing portion.

[0009] In addition, an apparatus related to the present disclosure is an apparatus to which a lighting fixture having a light source unit and a translucent outer shell covering the light source unit is detachably attached. In a state where the lighting fixture is attached to the apparatus, a location on the outer shell facing the apparatus is defined as a fixture-side facing portion, and in a state where the lighting fixture is attached to the apparatus, a location on the apparatus facing the fixture-side facing portion is defined as an apparatus-side facing portion. The apparatus-side facing portion is provided with a contact portion that contacts a part of the fixture-side facing portion.

[0010] In addition, a lighting fixture related to the present disclosure is a lighting fixture having a light source unit and a translucent outer shell covering the light source unit, and is detachably attached to an apparatus. In a state where the lighting fixture is attached to the apparatus, a location on the outer shell facing the apparatus is defined as a fixture-side facing portion, and in a state where the lighting fixture is attached to the apparatus, a location on the apparatus facing the fixture-side facing portion is defined as an apparatus-side facing portion. The fixture-side facing portion is provided with a contact portion that contacts a part of the apparatus-side facing portion.

Advantages of the Invention

[0011] In the lighting device according to the present disclosure, the area where the contact portion contacts the fixture-side facing portion and the area where the contact portion contacts the apparatus-side facing portion are smaller than the areas of the fixture-side facing portion and the apparatus-side facing portion. Therefore, compared with a conventional lighting device in which the fixture-side facing portion and the apparatus-side facing portion are in contact, the lighting device, apparatus, and lighting fixture according to the present disclosure can suppress the generation of abnormal noise due to the stick-slip phenomenon.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Mode for Carrying Out the Invention

[0013] Hereinafter, an example of a lighting device, a fixture, and a luminaire according to the present disclosure will be described with reference to the drawings in the following respective embodiments. In the following description, for convenience, the direction along the longitudinal direction of the lighting device is defined as the longitudinal direction X. Also, the direction orthogonal to the longitudinal direction X and along the short side of the lighting device is defined as the short side direction Y. And the direction orthogonal to both the longitudinal direction X and the short side direction Y is defined as the vertical direction Z. Further, in the vertical direction Z, the direction in which the luminaire is attached to the fixture is defined as the upward direction Z1. The direction opposite to the upward direction Z1, that is, the direction in which the luminaire is removed from the fixture, is defined as the downward direction Z2.

[0014] Note that each component of the lighting device, fixture, and luminaire shown in each of the following embodiments is merely an example. Each component of the lighting device, fixture, and luminaire according to the present disclosure is not limited to these descriptions. Also, in each figure, those with the same reference numerals are the same or corresponding ones. Further, in each figure, the relative dimensional relationships and shapes of the components may be different from those of the lighting device, fixture, and luminaire actually manufactured according to the present disclosure. Here, in the following description, terms representing directions or orientations are used as appropriate for ease of understanding, but their notations are for convenience of explanation. The directions or orientations shown in the following description do not limit the arrangement, direction, and orientation of each component of the lighting device, fixture, and luminaire according to the present disclosure. Note that terms representing directions or orientations are, for example, "up", "down", "right", "left", "front", "rear", "front side", or "back side", etc.

[0015] Embodiment 1. FIG. 1 is a perspective view of the lighting device according to Embodiment 1 as viewed from below. FIG. 2 is a split perspective view of the lighting device according to Embodiment 1 split into a fixture and a luminaire, and is a view of the lighting device as viewed from below. FIG. 3 is a view of the periphery of an end in the longitudinal direction X of the fixture of the lighting device according to Embodiment 1 as viewed from below. FIG. 4 is a perspective view of the luminaire of the lighting device according to Embodiment 1 as viewed from above. FIG. 5 is a perspective cross-sectional view of the luminaire according to Embodiment 1, and is a view of the luminaire as viewed from below. FIG. 6 is a cross-sectional view of the lighting device according to Embodiment 1 cut along a longitudinal section in the short-side direction Y. FIG. 7 is an enlarged view of part A in FIG. 6.

[0016] The lighting device 1 includes a fixture 100 attached to an attachment part 2 such as a ceiling, and a luminaire 200 detachably attached to the fixture 100. The luminaire 200 is configured to be attached to the fixture 100 so as to be pulled toward the fixture 100 side by, for example, a connecting mechanism having spring properties.

[0017] The appliance 100 is attached to a fixture such as a suspension bolt provided on the attachment portion 2, for example. The appliance 100 has an elongated appliance main body portion 110 extending in the longitudinal direction X, and appliance end portions 115 attached to both end portions of the appliance main body portion 110 in the longitudinal direction X.

[0018] The appliance main body portion 110 has a top surface portion 111, a pair of side surface portions 112, a pair of bottom surface portions 113, and a pair of reflecting surface portions 114. The top surface portion 111, the pair of side surface portions 112, the pair of bottom surface portions 113, and the pair of reflecting surface portions 114 are formed in an elongated and flat plate shape along the longitudinal direction X.

[0019] The pair of side surface portions 112, the pair of bottom surface portions 113, and the pair of reflecting surface portions 114 are arranged on both sides in the short direction Y of the top surface portion 111 along the longitudinal direction X of the top surface portion 111, and are provided over the entire length of the top surface portion 111. The pair of side surface portions 112 protrude downward in the Z2 direction from around the side edge portions of the top surface portion 111. The pair of bottom surface portions 113 are provided so as to extend in the short direction Y from the lower end portions of the side surface portions 112 to the outside of the appliance main body portion 110. The lower ends of the pair of reflecting surface portions 114 are connected to the end portions in the short direction Y of the bottom surface portion 113 at the ends where the side surface portions 112 are not connected. Further, the reflecting surface portion 114 is provided so as to be away from the side surface portion 112 as it approaches the attachment portion 2. The appliance main body portion 110 is formed by bending, for example, a metal plate material by a manufacturing method such as roll forming, bending, or turret punch press working.

[0020] The appliance end portion 115 has a shape corresponding to the end surface shape of both end portions of the appliance main body portion 110 in the longitudinal direction X. That is, the appliance end portion 115 has a shape corresponding to the cross-sectional shape along the short direction Y of the appliance main body portion 110. Further, a knockout 116 is formed in the appliance end portion 115. When drawing a wire or the like connected to another lighting device into the lighting device 1, a through portion formed by punching out the knockout 116 functions as an insertion port for the wire or the like.

[0021] The top surface portion 111 and the pair of side surface portions 112 of the appliance main body portion 110 form a concave shape with an open bottom surface, and together with the appliance end portion 115, form a lamp mounting portion 117. The lamp mounting portion 117 is a location where a part of the lamp 200 is accommodated and is formed in a box shape. The lamp mounting portion 117 is also referred to as an accommodation recess, and the cross-sectional shape along the short side direction Y is generally U-shaped. The lamp mounting portion 117 is provided with an appliance-side connecting portion 118 composed of an elastic member such as a leaf spring, a terminal block 120, an appliance-side electric wire 121, and the like.

[0022] The appliance-side connecting portion 118 is attached to the top surface portion 111 using a fixture 119 such as a screw. The appliance-side connecting portion 118, together with a lamp-side connecting tool 310 provided on the lamp 200 described later, constitutes a connecting mechanism. That is, by connecting the appliance-side connecting portion 118 to the lamp-side connecting tool 310 provided on the lamp 200, the lamp 200 is attached to the appliance 100.

[0023] In a state where the lamp 200 is attached to the appliance 100, at least a part of the bottom surface portion 113 faces an outer shell portion 250 of the lamp 200 described later. Also, in a state where the lamp 200 is attached to the appliance 100, at least a part of the side surface portion 112 faces the outer shell portion 250 of the lamp 200. The locations on the bottom surface portion 113 and the side surface portion 112 that face the outer shell portion 250 become the appliance-side facing portions 130.

[0024] The lamp 200 mainly includes a light source portion 210, a pedestal 220, an outer shell portion 250, a power supply portion 300, a lamp-side connecting tool 310, and the like.

[0025] The light source unit 210 is a light-emitting unit that emits light. The light source unit 210 includes a light-emitting element 211, which is, for example, an LED, and a substrate 212 on which the light-emitting element 211 is mounted. In Embodiment 1, the light-emitting element 211 is one or more packaged LEDs, and is surface-mounted on the mounting surface of the substrate 212. The light-emitting element 211 emits light using the lighting power supplied from the power supply unit 300 via the power supply line 302. The light source unit 210 is disposed on the first surface 231 of the later-described placement portion 230 of the pedestal 220. In Embodiment 1, the non-mounting surface of the substrate 212 and the first surface 231 of the pedestal 220 are adhesively fixed by an adhesive member 213.

[0026] The pedestal 220 is an elongated structure having a placement portion 230 extending in the longitudinal direction X and a side wall portion 240. The pedestal 220 is a mounting member to which the light source unit 210, the outer shell portion 250, the power supply unit 300, the fixture-side coupler 310, etc. are attached, and is also referred to as a frame.

[0027] In the placement portion 230, the light source unit 210 is disposed on the first surface 231, which is the lower surface of the placement portion 230, and the power supply unit 300 is disposed on the second surface 232, which is the upper surface of the placement portion 230. The side wall portion 240 rises from the end of the placement portion 230 in the Y direction toward the fixture 100 side. In Embodiment 1, the cross-sectional shape of the pedestal 220 along the short side direction Y is generally U-shaped. Note that the cross-sectional shape of the pedestal 220 along the short side direction Y is not limited to this shape. The fixture main body portion 110 is formed, for example, by bending a metal plate material using a manufacturing method such as roll forming, bending, or turret punching press working.

[0028] The power supply unit 300 converts the external power supplied from outside the lighting device 1 via the terminal block 120, the appliance-side electric wire 121, and the luminaire-side electric wire 301 into lighting power for lighting the light-emitting element 211 and supplies it to the light source unit 210. In the first embodiment, the lighting power is supplied from the power supply unit 300 to the light source unit 210 via the power supply line 302 that penetrates the pedestal and connects the power supply unit 300 and the light source unit 210. The power supply unit 300 is fixed to the pedestal 220 using fixtures such as screws or rivets (not shown), for example.

[0029] The outer cover portion 250 is a translucent cover having translucency and covering the light source unit 210. The outer cover portion 250 protects the light source unit 210 in a state of being attached to the pedestal 220 and transmits the light emitted from the light source unit 210 to irradiate the lighting space. The outer cover portion 250 has an outer cover main body portion 260 extending in the longitudinal direction X of the luminaire 200 and outer cover end portions 251 provided at both ends in the longitudinal direction X of the outer cover main body portion 260.

[0030] In the first embodiment, the outer cover portion 250 is a diffusion cover having diffusibility and is an optical member. The outer cover portion 250 is formed of a translucent synthetic resin material. Further, the outer cover main body portion 260 is formed, for example, by extrusion molding of a translucent synthetic resin material. The translucent synthetic resin material is, for example, a synthetic resin such as polycarbonate (PC), acrylic (PMMA), or polypropylene (PP).

[0031] The outer cover main body portion 260 has a light-transmitting portion 270 that transmits the light emitted from the light source unit 210, a mounting portion 280 for attaching the outer cover portion 250 to the pedestal 220, and a connecting portion 285 that connects the light-transmitting portion 270 and the mounting portion 280. The light-transmitting portion 270 has a light-transmitting main portion 271 that irradiates the light emitted from the light source unit 210 mainly below the outer cover portion 250 and a light-transmitting side portion 272 that irradiates the light emitted from the light source unit 210 mainly to the side of the outer cover portion 250. The light-transmitting portion 270 transmits the direct light emitted from the light source unit 210. Further, the light-transmitting portion 270 also transmits the reflected light reflected inside the space formed by the outer cover portion 250 and the pedestal 220.

[0032] The connecting portion 285 is provided so as to extend from both end portions in the short side direction Y of the light transmitting portion 270 toward the inner side of the light transmitting portion 270 in the short side direction Y. The mounting portion 280 is connected to an end portion in the short side direction Y of the connecting portion 285, which is opposite to the side to which the light transmitting portion 270 is connected. The mounting portion 280 has an engaging portion 281 and a supporting portion 282. The engaging portion 281 covers the side wall portion 240 of the pedestal 220 from the side and engages with the tip portion 241 of the side wall portion 240. The supporting portion 282 supports the arranging portion 230 of the pedestal 220 from the side of the first surface 231. That is, by the mounting portion 280 holding both end portions in the short side direction Y of the pedestal 220 from the outside and from above and below, the outer shell portion 250 is attached to the pedestal 220.

[0033] In a state where the lighting fixture 200 is attached to the appliance 100, at least a part of the connecting portion 285 of the outer shell portion 250 faces the lower surface portion 113 of the appliance 100. Also, in a state where the lighting fixture 200 is attached to the appliance 100, at least a part of the engaging portion 281 of the outer shell portion 250 faces the side surface portion 112 of the appliance 100. The portions of the connecting portion 285 and the engaging portion 281 of the outer shell portion 250 that face the appliance 100 become the lighting-fixture-side facing portions 290. That is, in a state where the lighting fixture 200 is attached to the appliance 100, the portion of the appliance 100 that faces the lighting-fixture-side facing portion 290 becomes the appliance-side facing portion 130.

[0034] When the lighting fixture 200 is attached to the appliance 100, the connecting portion 285 of the outer shell portion 250 attempts to contact the lower surface portion 113 of the opposing appliance 100. This is because the connecting portion 285 of the outer shell portion 250 functions to restrict the upward movement Z1 of the lighting fixture 200 so that the lighting fixture 200 does not enter the interior of the lighting-fixture mounting portion 117 of the appliance 100 more than necessary. Also, the connecting portion 285 of the outer shell portion 250 also functions to position the lighting fixture 200 in the vertical direction Z with respect to the appliance 100.

[0035] As described above, the luminaire 200 is attached to the appliance 100 so as to be drawn toward the appliance 100 side by a connecting mechanism having spring properties. For this reason, when the connecting portion 285 of the outer shell portion 250 comes into contact with the lower surface portion 113 of the appliance 100, the connecting portion 285 of the outer shell portion 250 and the lower surface portion 113 of the appliance 100 are in a relationship of pressing against each other by the pulling force of the connecting mechanism. That is, when the connecting portion 285 of the outer shell portion 250 comes into contact with the lower surface portion 113 of the appliance 100, a certain degree of pressing force continues to be applied to the contact portion.

[0036] Here, usually, the outer shell portion 250 and the appliance 100 are made of different materials. For this reason, the outer shell portion 250 and the appliance 100 have different characteristics such as the linear expansion coefficient, the expansion and contraction rate, and the friction coefficient. Therefore, due to the influence of the operating heat during the use of the lighting device 1 or the influence of the installation environment of the lighting device 1, etc., the outer shell portion 250 and the appliance 100 exhibit different amounts of expansion and contraction. At this time, strain is accumulated in the outer shell portion 250 and the appliance 100 until it exceeds the maximum static friction force of the outer shell portion 250 or the appliance 100. And when it exceeds the maximum static friction force of the outer shell portion 250 or the appliance 100, the outer shell portion 250 and the appliance 100 enter a state where the accumulated strain is released and the dynamic friction force acts, and abnormal noises accompanied by vibration are generated. That is, abnormal noises due to the stick-slip phenomenon are generated. The abnormal noises accompanied by vibration, in other words, the abnormal noises due to the stick-slip phenomenon, are rattling noises and friction noises, etc.

[0037] When different materials come into contact, reducing the contact area can suppress abnormal noises due to the stick-slip phenomenon. Being able to suppress abnormal noises means, for example, being able to reduce the occurrence frequency or magnitude of abnormal noises. Therefore, the lighting device 1 according to Embodiment 1 includes a contact portion 10 between the connecting portion 285 of the outer shell portion 250, which is the luminaire-side facing portion 290, and the lower surface portion 113 of the appliance 100, which is the appliance-side facing portion 130. The contact portion 10 contacts a part of the connecting portion 285 of the outer shell portion 250 and also contacts a part of the lower surface portion 113 of the appliance 100.

[0038] In Embodiment 1, the contact portion 10 is provided on the lower surface portion 113 of the instrument 100. More specifically, in Embodiment 1, at least one instrument-side convex portion 11 that protrudes toward the connection portion 285 of the outer shell portion 250 is integrally formed on the lower surface portion 113 of the instrument 100. In Embodiment 1, the instrument-side convex portion 11 serves as the contact portion 10. The instrument-side convex portion 11 can be formed using a manufacturing method such as roll forming, bending, or turret punching press processing. Note that the instrument-side convex portion 11 may be formed by performing secondary processing after forming the instrument main body portion 110.

[0039] Note that in Embodiment 1, the instrument-side convex portion 11, which is the contact portion 10, is formed in a hemispherical shape, but the shape of the instrument-side convex portion 11 is not limited to this shape. For example, the instrument-side convex portion 11 may be formed in a conical shape or a frustum of a cone shape. Also, for example, the instrument-side convex portion 11 may have a configuration combining a plurality of shapes.

[0040] By providing the instrument-side convex portion 11 on the lower surface portion 113 of the instrument 100, the connection portion 285 of the outer shell portion 250 and the lower surface portion 113 of the instrument 100 do not come into direct contact, and the connection portion 285 of the outer shell portion 250 and the instrument-side convex portion 11 come into contact. At this time, the connection portion 285 of the outer shell portion 250 and the instrument-side convex portion 11 are in a state close to point contact. That is, the contact area between the connection portion 285 of the outer shell portion 250 and the instrument-side convex portion 11 is smaller than the contact area when the connection portion 285 of the outer shell portion 250 and the lower surface portion 113 of the instrument 100 are in contact. Therefore, by providing the instrument-side convex portion 11 on the lower surface portion 113 of the instrument 100, abnormal noise due to the stick-slip phenomenon can be suppressed.

[0041] When the lamp 200 is attached to the appliance 100, the engaging portion 281 of the outer portion 250 inserted into the lamp mounting portion 117 of the appliance 100 serves as a positioning function in the short side direction Y of the lamp 200 with respect to the appliance 100. For this reason, if the displacement amount in the short side direction Y of the lamp 200 with respect to the appliance 100 is large, the engaging portion 281 of the outer portion 250 will try to contact the side surface portion 112 of the opposing appliance 100. Therefore, also at this location, when the engaging portion 281 of the outer portion 250 and the side surface portion 112 of the appliance 100 come into contact, abnormal noise due to the stick-slip phenomenon will occur.

[0042] Therefore, in the lighting device 1 according to the first embodiment, at least one appliance-side convex portion 11, which is the contact portion 10, is also formed on the side surface portion 112 of the appliance 100. As a result, the engaging portion 281 of the outer portion 250 and the side surface portion 112 of the appliance 100 do not come into direct contact, and the engaging portion 281 of the outer portion 250 and the appliance-side convex portion 11 will come into contact. At this time, the engaging portion 281 of the outer portion 250 and the appliance-side convex portion 11 are in a state close to point contact. That is, the contact area between the engaging portion 281 of the outer portion 250 and the appliance-side convex portion 11 is smaller than the contact area when the engaging portion 281 of the outer portion 250 and the side surface portion 112 of the appliance 100 come into contact. For this reason, by providing the appliance-side convex portion 11 on the side surface portion 112 of the appliance 100, abnormal noise due to the stick-slip phenomenon can be suppressed.

[0043] In addition, the outer portion 250 and the appliance 100 may have locations where they face each other in addition to the locations described above. That is, the lighting device 1 may have a lamp-side opposing portion 290 and an appliance-side opposing portion 130 in addition to the locations described above. In such a case, a contact portion 10 may be provided between the lamp-side opposing portion 290 and the appliance-side opposing portion 130. Thereby, abnormal noise due to the stick-slip phenomenon can be suppressed between the lamp-side opposing portion 290 and the appliance-side opposing portion 130.

[0044] In addition, in Embodiment 1, the height dimension of the contact portion 10 was not particularly mentioned, but the height dimension of the contact portion 10 is not particularly limited. The height dimension of the contact portion 10 may be appropriately determined in consideration of the specifications of the lighting device 1 and the like. For example, when giving priority to the designability of the lighting device 1, the height dimension of the contact portion 10 may be reduced. Thereby, the gap between the lamp-side opposing portion 290 and the fixture-side opposing portion 130 can be reduced, and the gap can be made inconspicuous.

[0045] In addition, in Embodiment 1, a plurality of contact portions 10 are provided between the pair of lamp-side opposing portions 290 and the fixture-side opposing portion 130. However, this is not the only case. When providing the contact portion 10 between the pair of lamp-side opposing portions 290 and the fixture-side opposing portion 130, at least one contact portion 10 may be provided between the pair of lamp-side opposing portions 290 and the fixture-side opposing portion 130. Thereby, abnormal noise due to the stick-slip phenomenon can be suppressed between the pair of lamp-side opposing portions 290 and the fixture-side opposing portion 130 where the contact portion 10 is provided.

[0046] In addition, in Embodiment 1, the plurality of contact portions 10 provided between the pair of lamp-side opposing portions 290 and the fixture-side opposing portion 130 are arranged in a row. However, this is not the only case. When providing a plurality of contact portions 10 between the pair of lamp-side opposing portions 290 and the fixture-side opposing portion 130, an arrangement other than a row such as a staggered arrangement may be used. Further, for example, when providing a plurality of contact portions 10 between the pair of lamp-side opposing portions 290 and the fixture-side opposing portion 130, these contact portions 10 may be arranged irregularly. In addition, in Embodiment 1, the plurality of contact portions 10 provided between the pair of lamp-side opposing portions 290 and the fixture-side opposing portion 130 are arranged in a single row. However, this is not the only case. When providing a plurality of contact portions 10 in a row between the pair of lamp-side opposing portions 290 and the fixture-side opposing portion 130, these contact portions 10 may be provided in a plurality of rows.

[0047] In Embodiment 1, the contact portion 10 provided between the pair of lamp-side facing portions 290 and the fixture-side facing portions 130 has a configuration shorter than the lengths of the lamp-side facing portions 290 and the fixture-side facing portions 130. In other words, the plurality of contact portions 10 provided between the pair of lamp-side facing portions 290 and the fixture-side facing portions 130 are discretely arranged. For example, focus on the contact portion 10 provided between the location that becomes the lamp-side facing portion 290 at the connection portion 285 of the outer shell portion 250 and the location that becomes the fixture-side facing portion 130 at the lower surface portion 113 of the fixture 100. In this case, the lengths in the longitudinal direction X and the short-side direction Y of the contact portion 10 are shorter than the lengths in the longitudinal direction X and the short-side direction Y of the lamp-side facing portion 290 and shorter than the lengths in the longitudinal direction X and the short-side direction Y of the fixture-side facing portion 130. Not limited to this, the contact portion 10 provided between the pair of lamp-side facing portions 290 and the fixture-side facing portions 130 may have the same length as the lamp-side facing portions 290 and the fixture-side facing portions 130. For example, focus on the contact portion 10 provided between the location that becomes the lamp-side facing portion 290 at the connection portion 285 of the outer shell portion 250 and the location that becomes the fixture-side facing portion 130 at the lower surface portion 113 of the fixture 100. In this case, for example, the length in the longitudinal direction X of the contact portion 10 may be the same as the lengths in the longitudinal direction X of the lamp-side facing portion 290 and the fixture-side facing portion 130.

[0048] When the contact portion 10 provided between the pair of lamp-side facing portions 290 and the fixture-side facing portions 130 has a configuration shorter than the lengths of the lamp-side facing portions 290 and the fixture-side facing portions 130, a gap communicating the lamp mounting portion 117 and the outside of the lighting device 1 is formed at the location where the contact portion 10 is not provided. During operation, the lighting device 1 generates heat from heat-generating portions such as the light source portion 210 and the power supply portion 300. By forming a gap communicating the lamp mounting portion 117 and the outside of the lighting device 1, the heat from the heat-generating portion can be discharged to the outside of the lighting device 1 through the gap. Thereby, it is possible to expect a longer service life of the lighting device 1 and long-term maintenance of the operation reliability of the lighting device 1.

[0049] On the one hand, when the contact part 10 provided between the pair of lamp-side facing parts 290 and the appliance-side facing parts 130 has the same length as the lamp-side facing parts 290 and the appliance-side facing parts 130, the contact part 10 functions as a rib. Thereby, the rigidity of the component provided with the contact part 10 is improved. Further, when the contact part 10 provided between the pair of lamp-side facing parts 290 and the appliance-side facing parts 130 has the same length as the lamp-side facing parts 290 and the appliance-side facing parts 130, when forming the component provided with the contact part 10 by extrusion processing, the processing becomes easy.

[0050] As described above, the lighting device 1 according to Embodiment 1 includes a lamp 200 and an appliance 100 to which the lamp 200 is detachably attached. Further, the lamp 200 has a light source part 210 and a translucent outer part 250 that covers the light source part 210. And the lighting device 1 according to Embodiment 1 includes a contact part 10 that contacts a part of the lamp-side facing part 290 and a part of the appliance-side facing part 130 between the lamp-side facing part 290 and the appliance-side facing part 130.

[0051] In the lighting device 1 according to Embodiment 1 configured as described above, the area where the contact part 10 contacts the lamp-side facing part 290 and the area where the contact part 10 contacts the appliance-side facing part 130 are smaller than the areas of the lamp-side facing part 290 and the appliance-side facing part 130. For this reason, the lighting device 1 according to Embodiment 1 can suppress the generation of abnormal noise due to the stick-slip phenomenon as compared with the conventional lighting device in which the lamp-side facing part 290 and the appliance-side facing part 130 are in contact.

[0052] Embodiment 2. The contact part 10 may be configured as in Embodiment 2, for example. In Embodiment 2, items not particularly described are the same as those in Embodiment 1, and the same reference numerals are used for the same functions and configurations as those in Embodiment 1.

[0053] FIG. 8 is a perspective sectional view of the lighting fixture according to Embodiment 2 and is a view of the lighting fixture seen from above. FIG. 9 is an enlarged view of a main part showing the vicinity of the fixture-side facing portion and the appliance-side facing portion of the lighting device according to Embodiment 2. This FIG. 9 is a view of the lighting device 1 according to Embodiment 2, observing the same position as part A in FIG. 6.

[0054] Attention is paid to the connection portion 285 of the outer portion 250 which is the fixture-side facing portion 290 and the lower surface portion 113 of the appliance 100 which is the appliance-side facing portion 130. When providing the contact portion 10 between these, in Embodiment 1, at least one appliance-side convex portion 11 protruding toward the connection portion 285 of the outer portion 250 which is the fixture-side facing portion 290 was integrally formed on the lower surface portion 113 of the appliance 100. And, in Embodiment 1, the appliance-side convex portion 11 became the contact portion 10. On the other hand, when providing the contact portion 10 between these, in Embodiment 2, at least one fixture-side convex portion 12 protruding toward the lower surface portion 113 of the appliance 100 which is the appliance-side facing portion 130 is integrally formed on the connection portion 285 of the outer portion 250. And, in Embodiment 2, the fixture-side convex portion 12 becomes the contact portion 10.

[0055] Also, attention is paid to the engagement portion 281 of the outer portion 250 which is the fixture-side facing portion 290 and the side surface portion 112 of the appliance 100 which is the appliance-side facing portion 130. When providing the contact portion 10 between these, in Embodiment 1, at least one appliance-side convex portion 11 protruding toward the engagement portion 281 of the outer portion 250 which is the fixture-side facing portion 290 was integrally formed on the side surface portion 112 of the appliance 100. And, in Embodiment 1, the appliance-side convex portion 11 became the contact portion 10. On the other hand, when providing the contact portion 10 between these, in Embodiment 2, at least one fixture-side convex portion 12 protruding toward the side surface portion 112 of the appliance 100 which is the appliance-side facing portion 130 is integrally formed on the engagement portion 281 of the outer portion 250. And, in Embodiment 2, the fixture-side convex portion 12 becomes the contact portion 10.

[0056] Also in the lighting device 1 according to Embodiment 2, similar to Embodiment 1, the area where the contact portion 10 contacts the fixture-side facing portion 290 and the area where the contact portion 10 contacts the device-side facing portion 130 are smaller than the areas of the fixture-side facing portion 290 and the device-side facing portion 130. For this reason, similar to Embodiment 1, the lighting device 1 according to Embodiment 2 can also suppress the generation of abnormal noise due to the stick-slip phenomenon as compared with the conventional lighting device in which the fixture-side facing portion 290 and the device-side facing portion 130 are in contact with each other.

[0057] In Embodiment 2, the fixture-side convex portion 12 provided on the fixture-side facing portion 290 of the outer shell portion 250 is formed so as to extend over the entire length in the longitudinal direction X of the fixture-side facing portion 290. In other words, the fixture-side convex portion 12 provided on the fixture-side facing portion 290 of the outer shell portion 250 is formed in a rib shape. The outer shell portion 250 having such a fixture-side convex portion 12 can be formed by, for example, extrusion molding, injection molding, or three-dimensional modeling.

[0058] As described in Embodiment 1, since the contact portion 10 can adopt various shapes, the fixture-side convex portion 12, which is the contact portion 10, can adopt various shapes. For example, after forming the rib-shaped fixture-side convex portion 12 on the outer shell portion 250, the fixture-side convex portion 12 may be cut by secondary processing. As a result, a plurality of fixture-side convex portions 12 are discretely arranged on the fixture-side facing portion 290 of the outer shell portion 250.

[0059] Embodiment 3. In Embodiment 1, the contact portion 10 was integrally formed with the device-side facing portion 130. Also in Embodiment 2, the contact portion 10 was integrally formed with the fixture-side facing portion 290. However, the contact portion 10 is not limited to such a configuration, and may be configured as in Embodiment 3, for example. In Embodiment 3, items not specifically described are the same as those in Embodiment 1 or Embodiment 2, and the same reference numerals are used for the same functions and configurations as those in Embodiment 1 or Embodiment 2.

[0060] FIG. 10 is an enlarged view of the main part showing the lamp-side facing portion and the periphery of the fixture-side facing portion of the lighting device according to Embodiment 3. This FIG. 10 is a view observing the same position as part A in FIG. 6 in the lighting device 1 according to Embodiment 3.

[0061] Attention is paid to the area between the connecting portion 285 of the outer shell portion 250 which is the lamp-side facing portion 290 and the lower surface portion 113 of the fixture 100 which is the fixture-side facing portion 130. In Embodiment 3, the contact portion 10 provided between these is configured not to be integrally formed with the connecting portion 285 of the outer shell portion 250 and the lower surface portion 113 of the fixture 100. In other words, in Embodiment 3, the contact portion 10 provided between these is formed separately from the connecting portion 285 of the outer shell portion 250 and the lower surface portion 113 of the fixture 100.

[0062] Also, attention is paid to the area between the engaging portion 281 of the outer shell portion 250 which is the lamp-side facing portion 290 and the side surface portion 112 of the fixture 100 which is the fixture-side facing portion 130. In Embodiment 3, the contact portion 10 provided between these is also configured not to be integrally formed with the engaging portion 281 of the outer shell portion 250 and the side surface portion 112 of the fixture 100. In other words, in Embodiment 3, the contact portion 10 provided between these is also formed separately from the engaging portion 281 of the outer shell portion 250 and the side surface portion 112 of the fixture 100.

[0063] Note that the contact portion 10 according to Embodiment 3 may be provided on the lamp-side facing portion 290 or the fixture-side facing portion 130. That is, the contact portion 10 according to Embodiment 3 may be fixed to the lamp-side facing portion 290 or the fixture-side facing portion 130. Thereby, it becomes easy to attach the lamp 200 to the fixture 100. For example, by attaching the contact portion 10 to the lamp-side facing portion 290 or the fixture-side facing portion 130, the contact portion 10 can be provided on the lamp-side facing portion 290 or the fixture-side facing portion 130. Also, by fixing the contact portion 10 to the lamp-side facing portion 290 or the fixture-side facing portion 130 by a molding method such as two-color molding or insert molding, the contact portion 10 can be provided on the lamp-side facing portion 290 or the fixture-side facing portion 130.

[0064] Also in the lighting device 1 according to the third embodiment, similar to the first and second embodiments, the area where the contact portion 10 contacts the lamp-side facing portion 290 and the area where the contact portion 10 contacts the fixture-side facing portion 130 are smaller than the areas of the lamp-side facing portion 290 and the fixture-side facing portion 130. For this reason, similar to the first and second embodiments, the lighting device 1 according to the third embodiment can suppress the generation of abnormal noise due to the stick-slip phenomenon as compared with the conventional lighting device in which the lamp-side facing portion 290 and the fixture-side facing portion 130 are in contact with each other.

[0065] Here, it is preferable that the contact portion 10 is formed of a material having a lower elastic modulus than the lamp-side facing portion 290 and the fixture-side facing portion 130. In other words, it is preferable that the contact portion 10 is formed of a material that is softer and has elasticity than the lamp-side facing portion 290 and the fixture-side facing portion 130. Further, when the contact portion 10 is provided on the lamp-side facing portion 290, it is preferable that the contact portion 10 is formed of a material having a lower elastic modulus than the lamp-side facing portion 290 that would come into contact with the fixture-side facing portion 130 in the absence of the contact portion 10. Further, when the contact portion 10 is provided on the fixture-side facing portion 130, it is preferable that the contact portion 10 is formed of a material having a lower elastic modulus than the fixture-side facing portion 130 that would come into contact with the lamp-side facing portion 290 in the absence of the contact portion 10. Examples of the material having a lower elastic modulus than the lamp-side facing portion 290 and the fixture-side facing portion 130 include rubber or elastomer.

[0066] By adopting the contact portion 10 formed of such a material, the impact when attaching the lamp 200 to the fixture 100 can be absorbed by the contact portion 10, and the lighting device 1 can be protected. Further, by adopting the contact portion 10 formed of such a material, abnormal noise due to the stick-slip phenomenon can be absorbed and the abnormal noise can be reduced.

[0067] Further, the contact portion 10 is preferably formed of a material having a lower coefficient of friction than the lamp-side facing portion 290 and the fixture-side facing portion 130. That is, the contact portion 10 is preferably formed of a material having better lubricity than the lamp-side facing portion 290 and the fixture-side facing portion 130. Also, when the contact portion 10 is provided on the lamp-side facing portion 290, the contact portion 10 is preferably formed of a material having a lower coefficient of friction than the lamp-side facing portion 290 that would otherwise rub against the fixture-side facing portion 130 in the absence of the contact portion 10. Further, when the contact portion 10 is provided on the fixture-side facing portion 130, the contact portion 10 is preferably formed of a material having a lower coefficient of friction than the fixture-side facing portion 130 that would otherwise rub against the lamp-side facing portion 290 in the absence of the contact portion 10. Materials having a lower coefficient of friction than the lamp-side facing portion 290 and the fixture-side facing portion 130 are, for example, urethane resin, silicone resin, epoxy resin, rubber, leather, and cloth.

[0068] By adopting the contact portion 10 with good lubricity in this way, the maximum static friction force of the contact portion 10 is reduced. For this reason, the distortion accumulated in the outer portion 250 and the fixture 100 is reduced, and thus the abnormal noise due to the stick-slip phenomenon can be further suppressed.

[0069] Also, the contact portion 10 with good lubricity is preferably formed of a material having a lower elastic modulus than the lamp-side facing portion 290 and the fixture-side facing portion 130. Thereby, the impact when attaching the lamp 200 to the fixture 100 can be absorbed by the contact portion 10, and the lighting device 1 can be protected. Also, thereby, the abnormal noise due to the stick-slip phenomenon can be absorbed and the abnormal noise can be reduced.

[0070] Embodiment 4. The contact portion 10 may be configured as in Embodiment 4, for example. In Embodiment 4, items not specifically described are the same as in any of Embodiments 1 to 3, and the same reference numerals are used to describe functions and configurations identical to those in any of Embodiments 1 to 3.

[0071] FIG. 11 is an enlarged view of a main part showing the lamp-side facing portion and the periphery of the fixture-side facing portion of the lighting device according to Embodiment 4. This FIG. 11 is a view of the lighting device 1 according to Embodiment 4, observing the same position as part A in FIG. 6.

[0072] On the fixture-side facing portion 130 of the fixture 100 according to Embodiment 4, a fixture-side convex portion 11 protruding toward the lamp-side facing portion 290 is integrally formed. Further, on the lamp-side facing portion 290 of the outer shell portion 250 according to Embodiment 4, a lamp-side convex portion 12 protruding toward the fixture-side facing portion 130 and contacting the fixture-side convex portion 11 is integrally formed. And the contact portion 10 according to Embodiment 4 is composed of the fixture-side convex portion 11 and the lamp-side convex portion 12.

[0073] In the lighting device 1 provided with the contact portion 10 configured as described above, the contact portion between the fixture-side convex portion 11 and the lamp-side convex portion 12 can be regarded as the portion where the contact portion 10 contacts the lamp-side facing portion 290. Also, in the lighting device 1 provided with the contact portion 10 configured as described above, the contact portion between the fixture-side convex portion 11 and the lamp-side convex portion 12 can be regarded as the portion where the contact portion 10 contacts the fixture-side facing portion 130.

[0074] Also in the lighting device 1 according to Embodiment 4, similar to Embodiments 1 to 3, the area where the contact portion 10 contacts the lamp-side facing portion 290 and the area where the contact portion 10 contacts the fixture-side facing portion 130 are smaller than the areas of the lamp-side facing portion 290 and the fixture-side facing portion 130. For this reason, also the lighting device 1 according to Embodiment 4, similar to Embodiments 1 to 3, can suppress the generation of abnormal noise due to the stick-slip phenomenon compared with a conventional lighting device in which the lamp-side facing portion 290 and the fixture-side facing portion 130 are in contact.

[0075] Further, in the lighting device 1 configured as in Embodiment 4, the positioning accuracy when attaching the lamp 200 to the fixture 100 is improved, and the design property of the lighting device 1 is improved.

[0076] For example, the appliance-side convex portion 11 provided on the side surface portion 112 of the appliance main body portion 110 and the lamp-side convex portion 12 provided on the engaging portion 281 of the outer shell portion 250 can define the mounting position of the lamp 200 in the lateral direction Y with respect to the appliance 100, and can also define the mounting position of the lamp 200 in the vertical direction Z with respect to the appliance 100. Further, the appliance-side convex portion 11 provided on the lower surface portion 113 of the appliance main body portion 110 and the lamp-side convex portion 12 provided on the connecting portion 285 of the outer shell portion 250 can define the mounting position of the lamp 200 in the vertical direction Z with respect to the appliance 100, and can also define the mounting position of the lamp 200 in the lateral direction Y with respect to the appliance 100. Therefore, the lamp 200 can be arranged substantially at the center in the lateral direction Y of the appliance 100, and the positional deviation of the lamp 200 with respect to the appliance 100 can be prevented, so that the design property of the lighting device 1 is improved.

[0077] Although not shown, the appliance-side convex portion 11 provided on the lower surface portion 113 of the appliance main body portion 110 and the lamp-side convex portion 12 provided on the connecting portion 285 of the outer shell portion 250 may be arranged in a manner opposite to the position shown in FIG. 11 in the lateral direction Y. Even in this case, the above-described effects can be obtained.

[0078] Furthermore, although not shown, the appliance-side convex portion 11 provided on the side surface portion 112 of the appliance main body portion 110 and the lamp-side convex portion 12 provided on the engaging portion 281 of the outer shell portion 250 may be arranged in a manner opposite to the position shown in FIG. 11 in the vertical direction Z. Thereby, the dropping of the lamp 200 from the appliance 100 can be suppressed.

[0079] Embodiment 5. The portion facing the appliance-side convex portion 11 and the lamp-side convex portion 12 may be configured as in Embodiment 5, for example. In Embodiment 5, items not particularly described are the same as any one of Embodiments 1 to 4, and the same functions and configurations as any one of Embodiments 1 to 4 are described using the same reference numerals.

[0080] FIG. 12 is an enlarged view of the main part showing the lamp-side facing part and the periphery of the fixture-side facing part of the lighting device according to Embodiment 5. This FIG. 12 is a view of the lighting device 1 according to Embodiment 5, observing the same position as part A in FIG. 6.

[0081] In the lamp-side facing part 290 of the outer shell part 250 according to Embodiment 5, a lamp-side convex part 12 protruding toward the fixture-side facing part 130 is integrally formed. Further, in Embodiment 5, in the fixture-side facing part 130 of the fixture 100, a fixture-side concave part 21 into which a part of the lamp-side convex part 12 is inserted and contacts is formed. Note that the positions of the convex part and the concave part may be reversed. Specifically, a fixture-side convex part 11 protruding toward the lamp-side facing part 290 may be integrally formed in the fixture-side facing part 130 of the fixture 100. In this case, it is sufficient that a lamp-side concave part into which a part of the fixture-side convex part 11 is inserted and contacts is formed in the lamp-side facing part 290 of the outer shell part 250.

[0082] Also in the lighting device 1 according to Embodiment 5, similar to Embodiments 1 to 4, the area where the contact part 10 contacts the lamp-side facing part 290 and the area where the contact part 10 contacts the fixture-side facing part 130 are smaller than the areas of the lamp-side facing part 290 and the fixture-side facing part 130. Therefore, similar to Embodiments 1 to 4, the lighting device 1 according to Embodiment 5 can suppress the generation of abnormal noise due to the stick-slip phenomenon compared with a conventional lighting device in which the lamp-side facing part 290 and the fixture-side facing part 130 are in contact.

[0083] Further, in the lighting device 1 configured as in Embodiment 5, the design property of the lighting device 1 is improved.

[0084] For example, when the lamp-side convex portion 12 provided at the connection portion 285 of the outer shell portion 250 is inserted into and contacts the appliance-side concave portion 21 formed on the lower surface portion 113 of the appliance main body portion 110, the vertical mounting position of the lamp 200 with respect to the appliance 100 in the Z direction can be defined, and the lateral mounting position of the lamp 200 with respect to the appliance 100 in the Y direction can also be defined. Therefore, the lamp 200 can be arranged substantially at the center in the lateral direction Y of the appliance 100, and displacement of the lamp 200 with respect to the appliance 100 can be prevented. Further, since a part of the lamp-side convex portion 12 is inserted into the appliance-side concave portion 21, the gap between the connection portion 285 of the outer shell portion 250 and the lower surface portion 113 of the appliance main body portion 110 can be reduced. Therefore, the design property of the lighting device 1 is improved.

[0085] Note that, at the opposing portions of the lamp-side convex portion 12 to the appliance-side concave portion 21 and at the opposing portions of the appliance-side concave portion 21 to the lamp-side convex portion 12, by adjusting the inclination angle, curvature, etc., the contact area between the lamp-side convex portion 12 and the appliance-side concave portion 21 can be reduced, and generation of abnormal noise due to the stick-slip phenomenon can be further suppressed. The same applies when the appliance-side convex portion 11 and the lamp-side concave portion are formed.

[0086] Further, considering the ease of processing of the outer shell portion 250 and the appliance 100, and the ease of attaching the lamp 200 to the appliance 100, etc., the number of the pair of lamp-side convex portions 12 and appliance-side concave portions 21 arranged in the direction of improving the positioning accuracy of the lamp 200 with respect to the appliance 100 is preferably small. For example, when it is desired to improve the positioning accuracy of the lamp 200 with respect to the appliance 100 in the lateral direction Y, in the longitudinal section along the lateral direction Y, the number of the pair of lamp-side convex portions 12 and appliance-side concave portions 21 is preferably from 1 to 3.

[0087] As described above, in Embodiments 1 to 5, an example of the lighting device, appliance, and lamp according to the present disclosure has been described. However, the lighting device, appliance, and lamp according to the present disclosure are not limited to the configurations described in Embodiments 1 to 5.

[0088] For example, the lighting device 1 shown in Embodiments 1 to 5 is an example of a so-called reverse Fuji type lighting device. However, the lighting device according to the present disclosure is not limited to this, and may be a direct attachment type lighting device other than the reverse Fuji type such as a trough type or a cap type, or may be an embedded type lighting device.

[0089] Further, the lighting device 1 shown in Embodiments 1 to 5 is an example of a long type lighting device. However, the lighting device according to the present disclosure is not limited to this, and may be a regular polygon type including a square type, a circular type, or the like.

[0090] Also, for example, the connection mechanism used when attaching the lighting fixture according to the present disclosure to the appliance according to the present disclosure is not limited to the connection mechanism shown in Embodiments 1 to 5. For example, the elastic member constituting the appliance-side connection portion of the connection mechanism may be a spring other than a leaf spring, such as a wire spring. Also, for example, the fixture-side connector of the connection mechanism may be constituted by an elastic member such as a spring, and the fixture-side connector may be connected to the appliance-side connection portion which is a fixture. Also, for example, as the connection mechanism, a configuration may be adopted in which an elastic member such as a leaf spring attached to the lighting fixture mounting portion of the appliance sandwiches the lighting fixture. Also, for example, as the connection mechanism, a configuration may be adopted in which an elastic member such as a leaf spring attached to the lighting fixture directly engages with the lighting fixture mounting portion of the appliance. Also, for example, the connection mechanism may be a configuration that does not employ an elastic member such as a spring. For example, the lighting fixture may be attached to the appliance using a fixture such as a screw or a rivet. Also, for example, the lighting fixture may be attached to the appliance using the magnetic force of a magnetic force generating tool such as a magnet.

[0091] Also, for example, the light emitting element 211 of the lighting device 1 shown in Embodiments 1 to 5 was a packaged surface mount type light emitting element. However, the light emitting element of the lighting device according to the present disclosure is not limited to this, and may be, for example, a light emitting element other than the surface mount type. Also, for example, the light emitting element of the lighting device according to the present disclosure may be an organic EL, a laser, a discharge lamp, or a filament lamp.

[0092] Further, for example, the outer shell of the lighting device according to the present disclosure may include a resin material other than those exemplified in Embodiments 1 to 5, or may include a material other than the resin material.

[0093] Also, the outer shell 250 of the lighting device 1 shown in Embodiments 1 to 5 had a substantially U-shaped cross-sectional shape along the short side direction Y. However, the outer shell of the lighting device according to the present disclosure is not limited to this, and may have a shape including a plane, a cylindrical shape, or the like.

[0094] Further, the outer shell main body of the outer shell of the lighting device according to the present disclosure may be formed using a molding method other than extrusion molding, such as injection molding, blow molding, or three-dimensional modeling.

Description of Reference Numerals

[0095] 1 Lighting device, 2 Mounting portion, 10 Contact portion, 11 Convex portion on the fixture side, 12 Convex portion on the luminaire side, 21 Concave portion on the fixture side, 100 Fixture, 110 Fixture main body portion, 111 Top surface portion, 112 Side surface portion, 113 Bottom surface portion, 114 Reflective surface portion, 115 Fixture end portion, 116 Knockout, 117 Luminaire mounting portion, 118 Connecting portion on the fixture side, 119 Fixture, 120 Terminal block, 121 Electric wire on the fixture side, 130 Opposing portion on the fixture side, 200 Luminaire, 210 Light source portion, 211 Light emitting element, 212 Substrate, 213 Adhesive member, 220 Base, 230 Arrangement portion, 231 First surface, 232 Second surface, 240 Side wall portion, 241 Tip portion, 250 Outer shell, 251 Outer shell end portion, 260 Outer shell main body portion, 270 Translucent portion, 271 Main translucent portion, 272 Side translucent portion, 280 Mounting portion, 281 Engaging portion, 282 Support portion, 285 Connecting portion, 290 Opposing portion on the luminaire side, 300 Power supply portion, 301 Electric wire on the luminaire side, 302 Power supply wire, 310 Connecting tool on the luminaire side.

Claims

1. A lighting device comprising a light source unit and a light-transmissive outer cover that covers the light source unit, and an appliance to which the lighting fixture is detachably attached, wherein, when the lighting fixture is attached to the appliance, a location on the outer cover facing the appliance is defined as the fixture-side facing portion, and a location on the appliance facing the fixture-side facing portion is defined as the appliance-side facing portion, the lighting device further comprising a plurality of contact portions that are formed integrally with the fixture-side facing portion so as to protrude toward the appliance-side facing portion and that, when the lighting fixture is attached to the appliance, are in linear contact with at least a part of the appliance-side facing portion.

2. The lighting device according to Claim 1, wherein the contact portions are formed along the longitudinal direction of the lighting fixture.

3. The lighting device according to Claim 2, wherein the length of the appliance-side facing portion along the longitudinal direction at the portion where the contact portions contact is longer than the length of the appliance-side facing portion along the longitudinal direction at the portion where the contact portions do not contact.

4. The lighting device according to Claim 2, wherein the length of the appliance-side facing portion along the longitudinal direction at the portion where the contact portions contact is shorter than the length of the appliance-side facing portion along the longitudinal direction at the portion where the contact portions do not contact. ​ ​

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