Luminaire

Abstract

To provide a luminaire capable of suppressing the occurrence of a shadow near the periphery of the luminaire on an installation surface such as a wall surface where the luminaire is installed.SOLUTION: A luminaire 1 includes; a lighting part 2; an outer cover body 530 through which light passes; and an inner cover body 550 which transmits the light. The lighting part 2 includes a light source 4 for emitting the light to the outside of the lighting part 2. The outer cover body 530 is arranged to be opposed to the light source 4. The inner cover body 550 is interposed between the outer cover body 530 and the light source 4. The outer cover body 530 has a main part 540 opposed to the lighting part 2 at an interval. The main part 540 has a reflection surface 590. The reflection surface 590 is arranged, facing the lighting part 2 side, outside the inner cover body 550 in view from a direction where the outer cover body 530 and the light source 4 are opposed to each other.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present disclosure relates to a lighting fixture, and more particularly to a lighting fixture including a lighting unit having a light source unit, and an outer cover body and an inner cover body fixed to the lighting unit.

Background Art

[0002] Patent Document 1 describes a lighting fixture installed on an installation surface such as an outdoor wall surface. This lighting fixture includes a lighting unit that houses and holds a light source, a socket, a thermal protector, and a socket cap inside. The lighting unit has a base portion, an inner case, an outer case, a terminal block, a packing, and a stat.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When installing a lighting fixture on an installation surface such as a wall surface, thick shadows may occur because light hardly reaches the vicinity around the lighting fixture on the installation surface. Such thick shadows cause deterioration of the appearance of the installation surface.

[0005] An object of the present disclosure is to provide a lighting fixture capable of suppressing the occurrence of shadows in the vicinity around the lighting fixture on the installation surface when the lighting fixture is installed on an installation surface such as a wall surface.

Means for Solving the Problems

[0006] The lighting fixture of the present disclosure includes a lighting unit, an outer cover body that allows light to pass through, and an inner cover body that transmits light. The lighting unit includes a light source unit that emits light toward the outside of the lighting unit. The outer cover body is disposed so as to face the light source unit. The inner cover body is interposed between the outer cover body and the light source unit. The outer cover body includes a main portion that faces the lighting unit with a space therebetween. The main portion has a reflecting surface. The reflecting surface is disposed outside the inner cover body when viewed in the direction in which the outer cover body and the light source unit face each other, and faces the lighting unit side.

Effect of the Invention

[0007] According to one aspect of the present disclosure, when the lighting fixture is installed on an installation surface such as a wall surface, generation of a shadow in the vicinity around the lighting fixture on the installation surface can be suppressed.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Embodiments for Carrying Out the Invention

[0009] Embodiments of the lighting fixture according to the present disclosure will be described with reference to FIGS. 1 to 11. Note that the following embodiments are only a part of various embodiments of the present disclosure. Also, the following embodiments can be variously modified according to design and the like as long as the object of the present disclosure can be achieved.

[0010] The figures referred to below are all schematic figures, and the dimensional ratios of the components in the figures do not necessarily reflect the actual dimensional ratios.

[0011] 1. Overview The lighting fixture 1 according to the present embodiment includes a lighting unit 2, an outer cover body 530 that allows light to pass through, and an inner cover body 550 that transmits light. The lighting unit 2 includes a light source unit 4 that emits light toward the outside of the lighting unit 2. The outer cover body 530 is disposed so as to face the light source unit 4. The inner cover body 550 is interposed between the outer cover body 530 and the light source unit 4. The outer cover body 530 includes a main part 540 that faces the lighting unit 2 with a gap therebetween. The surface of the main part 540 has a reflecting surface 590. The reflecting surface 590 is disposed outside the inner cover body 550 when viewed in the direction in which the outer cover body 530 and the light source unit 4 face each other, and faces the lighting unit 2 side.

[0012] According to the present embodiment, a part of the light emitted from the light source unit 4 and transmitted through the inner cover body 550 is reflected by the reflecting surface 590 toward the lighting unit 2 side outside the inner cover body 550. Therefore, when the lighting fixture 1 is installed on an installation surface such as a wall surface, light is likely to be irradiated up to the vicinity around the lighting fixture 1 on the installation surface. For this reason, the generation of shadows in the vicinity around the lighting fixture 1 can be suppressed.

[0013] Note that when the outer cover body 530 allows light to pass through, it means that the outer cover body 530 allows at least a part of the light that has reached the outer cover body 530 to pass through. Also, when the outer cover body 530 allows light to pass through, it means that the outer cover body 530 allows light to pass through without changing the traveling direction of the light, or allows light to pass through after changing the traveling direction of the light (i.e., scattering the light). Further, when the outer cover body 530 allows light to pass through, it means that the outer cover body 530 transmits at least a part of the light, or that the outer cover body 530 does not inhibit the traveling of at least a part of the light. That the outer cover body 530 does not inhibit the traveling of light means, for example, that the outer cover body 530 has an opening or the like through which light can pass. That the outer cover body 530 transmits light means, for example, that the outer cover body 530 is made of a material that can transmit light. That the inner cover body 550 transmits light means, for example, that the inner cover body 550 is made of a material that can transmit light.

[0014] 2. Details The lighting fixture 1 of the embodiment will be described with reference to FIGS. 1 to 11. In the following description, the side of the cover body 5 with respect to the lighting unit 2 is defined as the front in the embodiment, and the side of the lighting unit 2 with respect to the cover body 5 is defined as the rear in the embodiment. Also, as will be described later, the lighting unit 2 in the embodiment includes the emergency light source unit 7, but the side on which the lens 70 of the emergency light source unit 7 is arranged with respect to the lighting unit 2 is defined as the lower side in the embodiment, and the side opposite to the lower side is defined as the upper side in the embodiment. Further, the right and left for the observer when the front, rear, upper, and lower in the above-described embodiment are regarded as the front, rear, upper, and lower for the observer are defined as the right and left in the embodiment. Also in the second and third embodiments, the front, rear, upper, lower, right, and left are defined in the same manner. Note that this front, rear, upper, lower, right, and left are for convenience in explaining the configuration of the lighting fixture 1 and do not define the orientation of the lighting fixture 1 when the lighting fixture 1 is used. The arrow X in the drawing indicates the left side in the left-right direction, the arrow Y indicates the front side in the front-rear direction, and the arrow Z indicates the lower side in the up-down direction.

[0015] The lighting fixture 1 is installed on an installation surface such as a wall surface. The installation surface is the surface on which the lighting fixture 1 is installed. The lighting fixture 1 is installed on the installation surface such that the rear surface of the lighting fixture 1 faces the installation surface. The lighting fixture 1 is used, for example, by being attached to an outdoor wall surface such as around the entrance of a detached house or an apartment building. More specifically, the lighting fixture 1 is installed, for example, in the corridor of the common area of an apartment building or on the landing of a staircase, and serves as an emergency light and a staircase passage guiding light. Note that the use of the lighting fixture 1 is not limited to the above.

[0016] As shown in FIGS. 1 and 2, the lighting fixture 1 includes a lighting unit 2 and a cover body 5.

[0017] The lighting unit 2 includes an appliance body 200, a support member 3, a light source unit 4, an emergency power source 6, an emergency light source unit 7, and an emergency lighting device 8.

[0018] (1) Lighting unit First, the lighting unit 2 will be described (see FIGS. 2, 3, 7, and 8).

[0019] The appliance body 200 in the lighting unit 2 is a box-shaped member with an open front and having an accommodation space S1 inside. In this embodiment, the appliance body 200 is made of aluminum die-cast. The appliance body 200 has two side walls 20 arranged side by side left and right so as to sandwich the accommodation space S1. Each of the two side walls 20 includes an inner wall portion 21 facing the accommodation space S1 and an outer wall portion 22 located outside the inner wall portion 21.

[0020] The appliance body 200 further has two second side walls 23 and 24 arranged vertically so as to sandwich the accommodation space S1, and a bottom wall 25 located behind the accommodation space S1. The bottom wall 25 is rectangular in a front view. Two side walls 20 project forward from the left and right sides of the bottom wall 25, respectively. One second side wall 23 projects forward from the upper side of the bottom wall 25, and the other second side wall 24 projects forward from the lower side of the bottom wall 25. That is, the second side wall 23 is the upper side wall projecting from the upper side of the bottom wall 25, and the second side wall 24 is the lower side wall projecting from the lower side of the bottom wall 25. The outer wall portions 22 of the two side walls 20 and the two second side walls 23 and 24 are continuously formed in a rectangular frame shape.

[0021] The accommodation space S1 is a space surrounded by the bottom wall 25, the two side walls 20, and the two second side walls 23 and 24, and is open toward the front. The rear surface of the bottom wall 25 faces the wall side of the building where the lighting fixture 1 is installed.

[0022] The appliance body 200 has a drainage space S2 located between the inner wall portion 21 and the outer wall portion 22 of each of the two side walls 20. That is, the appliance body 200 has two drainage spaces S2, and the two drainage spaces S2 are arranged side by side left and right so as to sandwich the accommodation space S1. Each of the two drainage spaces S2 is a space surrounded by the inner wall portion 21, the outer wall portion 22, the upper second side wall 23, the lower second side wall 24, and the bottom wall 25. The two drainage spaces S2 are both open toward the front.

[0023] The inner wall portion 21 is located at a position away from the second side wall 23 below the upper second side wall 23. Therefore, in a state where the support member 3 is not attached to the appliance body 200, the upper end portions of the two drainage spaces S2 and the upper end portion of the accommodation space S1 are connected. When the support member 3 is attached to the appliance body 200, the two drainage spaces S2 and the accommodation space S1 are in a state where they do not communicate with each other.

[0024] As shown in Fig. 7, the upper second side wall 23 has, at its two left - right ends, through - holes 230 in the shape of long slits in the front - rear direction respectively. The front - side ends of the through - holes are open. The two through - holes 230 communicate with the two drainage spaces S2 respectively. The through - hole 230 is the part through which a part of the cover body 5 passes when the cover body 5 is attached to and detached from the appliance main body 200. On the outer surface of a part of the upper second side wall 23 adjacent to one (the right side in this embodiment) of the through - holes 230, a recess 231 recessed more than other parts is provided. A screw hole 232 for attaching a screw 9 is provided in a part of the recess 231. By attaching the screw 9 to the screw hole 232, the head 90 of the screw 9 is positioned above the right - side through - hole 230, and the upward movement of the cover body 5 can be restricted. The head 90 of the screw 9 is received in the recess 231, so that the protrusion above the uppermost surface of the upper second side wall 23 is suppressed.

[0025] As shown in Fig. 3, on the lower surface of the upper second side wall 23, a bulging part 233 protruding toward the accommodation space S1 (that is, downward) is provided.

[0026] In the lower second side wall 24, in the part facing the drainage space S2, a foreign - object discharge hole 240 for discharging foreign objects such as water, insects, and dust that have entered the drainage space S2 is formed. In the part of the lower second side wall 24 facing the accommodation space S1, a foreign - object discharge hole 241 for discharging foreign objects that have entered the accommodation space S1 is formed. In this embodiment, the foreign - object discharge hole 240 and the foreign - object discharge hole 241 are connected to each other and form one hole.

[0027] As shown in Fig. 8, in the bottom wall 25, at the lower - end part of the part facing the drainage space S2, a foreign - object discharge hole 250 is provided.

[0028] Of the upper surface of the lower second side wall 24, on the part facing the drainage space S2, an inclined surface 243 inclined downward toward the foreign matter discharge hole 240 and an inclined surface 244 inclined downward toward the foreign matter discharge hole 250 are formed. Similarly, on the part of the upper surface of the lower second side wall 24 facing the accommodation space S1, an inclined surface (not shown) inclined downward toward the foreign matter discharge hole 241 is formed.

[0029] As shown in FIG. 3, the outer wall portion 22 is in the shape of a rectangular plate. One end (upper end) of the outer wall portion 22 is continuous with the upper second side wall 23, and the other end (lower end) of the outer wall portion 22 is continuous with the lower second side wall 24.

[0030] In this embodiment, the inner wall portion 21 includes a first portion 210 parallel to the outer wall portion 22, a second portion 211 parallel to the outer wall portion 22 and located outside the first portion 210, and an inclined third portion 212 connecting the first portion 210 and the second portion 211. Each of the first portion 210, the third portion 212, and the second portion 211 is in the shape of a rectangular plate. The first portion 210, the third portion 212, and the second portion 211 are continuously connected from top to bottom in this order.

[0031] As shown in FIG. 8, the inner wall portion 21 and the outer wall portion 22 are continuously connected at the half portion (rear half portion) on the bottom wall 25 side through a plurality (three in this embodiment) of connecting portions 26. Specifically, the upper end portion and the central portion in the vertical direction of the first portion 210 are continuously connected to the outer wall portion 22 through the connecting portion 26, and the remaining portion of the second portion 211 except the lower end portion is continuously connected to the outer wall portion 22 through the connecting portion 26.

[0032] The inner wall portion 21 is provided with a connecting portion 27 used for connection with the cover body 5. In this embodiment, the connecting portion 27 is provided at the central portion in the front-rear direction of the inner wall portion 21, on the front side of the connecting portion 26.

[0033] The connecting portion 27 has a first locking portion 270 that protrudes from the first portion 210 of the inner wall portion 21 and is L-shaped in side view, and a second locking portion 271 that protrudes from the first portion 210 and the third portion 212 of the inner wall portion 21 and is L-shaped in side view. Each of the first locking portion 270 and the second locking portion 271 has a rib 272 in the form of a ridge extending in the vertical direction, and a rib 273 extending forward from one end (lower end) in the longitudinal direction of the rib 272.

[0034] As shown in FIG. 3, the inner wall portion 21 is further provided with a pair of fixing portions 28 that protrude toward the inside (accommodation space S1). Screws 11 for fixing the support member 3 are screwed into the pair of fixing portions 28. The fixing portions 28 are provided at one end and the other end (that is, the upper and lower ends) in the longitudinal direction of the first portion 210, respectively.

[0035] The support member 3 is attached to the instrument body 200 so as to close the accommodation space S1 of the instrument body 200. The support member 3 includes a main body portion 30 that closes the accommodation space S1, and two side wall portions 31 (see FIG. 8) that extend from the main body portion 30 so as to overlap the outer surfaces of the inner wall portions 21 of the two side walls 20, respectively. The support member 3 is made of, for example, metal and is formed by bending a single metal plate.

[0036] The light source unit 4 is attached to the main body portion 30. The main body portion 30 functions as a reflector that reflects the light from the light source unit 4. The main body portion 30 is in the form of a plate having a substantially rectangular shape in plan view. The main body portion 30 has an outer shape corresponding to the two inner wall portions 21. Each of the left end side and the right end side of the main body portion 30 is bent along the first portion 210, the third portion 212, and the second portion 211 of the inner wall portion 21. The left-right dimension of the portion closing the space between the two second portions 211 in the main body portion 30 is longer than the left-right dimension of the portion closing the space between the two first portions 210 in the main body portion 30. An extension portion 32 extending outward in the left-right direction is formed at the lower end portion of the main body portion 30. The lower end portion of the main body portion 30 is elongated in the left-right direction by the amount of the two extension portions 32. Through holes 300 into which the screws 11 are inserted are provided in the portion of the main body portion 30 corresponding to the four fixing portions 28.

[0037] In the main body portion 30, the side wall portion 31 extends rearward from the portion corresponding to each first portion 210 of the two inner wall portions 21 (that is, the portion above the extension portion 32). As shown in FIG. 8, the two side wall portions 31 extend rearward and inward in the left - right direction from the main body portion 30 such that the interval between the two side wall portions 31 becomes narrower toward the distal end side (rear side).

[0038] As shown in FIG. 3, each of the two side wall portions 31 is in a strip - plate shape. The upper end portion of each of the two side wall portions 31 is longer on the rear side than the portion below it.

[0039] The support member 3 further includes a roof portion 33 that protrudes obliquely upward and rearward from the upper end edge of the main body portion 30. The roof portion 33 is in a strip - plate shape extending in the left - right direction. At each of the left and right end portions of the roof portion 33, an extension portion 330 that overlaps the outer surface of the side wall portion 31 is provided.

[0040] The support member 3 is fixed to the appliance main body 200 by being attached to four fixing portions 28 of the appliance main body 200 by four screws 11. With the support member 3 fixed to the appliance main body 200, the pair of side wall portions 31 overlap the outer surfaces of the pair of inner wall portions 21. In this embodiment, at least a part of each of the two side wall portions 31 is in contact with the outer surface of the corresponding inner wall portion 21. And the side wall portion 31 and the outer surface of the inner wall portion 21 are in elastic contact.

[0041] More specifically, as shown in FIG. 8, the tip portion (rear end portion) of each side wall portion 31 is in elastic contact with the outer surface of the corresponding inner wall portion 21. Thereby, no gap is generated between the tip portion (rear end portion) of the side wall portion 31 and the outer surface of the inner wall portion 21.

[0042] The light source portion 4 shown in FIG. 3 is a normal - use light source unit that is lit by electric power from a normal power source (for example, a commercial power source). As the light source portion 4, an appropriate normal - use light source unit can be adopted. The light source portion 4 is supported by the support member 3 and irradiates light in front of the support member 3.

[0043] The light source unit 4 includes a light source, a lens that controls the light distribution of the light emitted from the light source, a diffusion member 40 provided in front of the lens to diffuse the light from the lens, and a normal lighting device that lights the light source with normal power supplied from a normal power source.

[0044] The light source is, for example, a white LED (Light Emitting Diode) for illumination. The lens is formed of a light-transmissive material such as glass. Note that the lens may be formed of a synthetic resin such as polycarbonate resin or acrylic resin. The light source and the lens are attached to the front surface of the central portion of the main body portion 30 of the support member 3.

[0045] The diffusion member 40 is formed in a dome shape that protrudes forward from the central portion of the main body portion 30 of the support member 3 and opens rearward. The diffusion member 40 has a dome portion and an annular flange portion that protrudes outward from the periphery of the rear end portion of the dome portion.

[0046] The diffusion member 40 is formed by mixing a diffusing material into a light-transmissive synthetic resin such as acrylic resin or polycarbonate resin. The diffusion member 40 is attached to the central portion of the main body portion 30 of the support member 3 by fixing the flange portion to the main body portion 30 with a fixture such as a screw.

[0047] The normal lighting device is attached to the rear surface of the main body portion 30 of the support member 3 and is electrically connected to the light source. The normal lighting device has a circuit board including a power conversion circuit that converts the alternating current power supplied from the normal power source into direct current power, a constant current circuit that makes the direct current supplied to the light source constant current, and the like.

[0048] In the light source unit 4 of the present embodiment, the light emitted from the light source is controlled in light distribution by the lens, travels so as to spread in the vertical and horizontal directions toward the front of the instrument main body 200, and is diffused by the diffusion member 40.

[0049] The emergency power source 6 in the lighting unit 2 has a plurality of battery cells electrically connected in series. Each of the plurality of battery cells is, for example, a nickel-metal hydride storage battery. The emergency power source 6 is charged with normal power supplied from the normal power source. The emergency power source 6 is attached to the bottom wall 25 so as to be located in the accommodation space S1 of the lighting unit 2.

[0050] The emergency light source unit 7 is configured to emit illumination light downward from the lower surface of the lighting unit 2.

[0051] The emergency light source unit 7 has a light source (not shown) and a lens 70 that controls the light distribution of the light emitted from the light source. The light source is, for example, an illumination white LED. The lens 70 is formed of a light-transmissive material such as quartz glass.

[0052] The emergency light source unit 7 is attached to the lower second side wall 24 such that a part (lower part) of the lens 70 protrudes outside (lower side) of the lighting unit 2 through the insertion hole 242 of the lower second side wall 24. The remaining part of the emergency light source unit 7 except for the lower part of the lens 70 is disposed in the accommodation space S1.

[0053] An emergency lighting device 8 is electrically connected to the light source of the emergency light source unit 7. The emergency lighting device 8 is a device that lights the emergency light source unit 7 with emergency power (DC power) supplied from the emergency power source 6 when a power failure occurs in the normal power source. The emergency lighting device 8 is attached to the bottom wall 25 so as to be located in the accommodation space S1 of the lighting unit 2.

[0054] (2) Cover body The cover body 5 in the present embodiment will be described (see FIGS. 2, 4 to 11).

[0055] The cover body 5 includes an outer cover body 530, an inner cover body 550, and a holding body 510.

[0056] The outer cover body 530 has a function of allowing the light emitted from the light source unit 4 and passing through the inner cover body 550 to pass through and be emitted to the outside of the lighting fixture 1 (see FIGS. 4 and 5). The outer cover body 530 has a main part 540 and four leg parts 544. The main part 540 and the leg parts 544 do not transmit light.

[0057] The main part 540 is in a frame shape. The main part 540 is formed by combining a plurality of rod-shaped frame parts. In the present embodiment, the plurality of frame parts include four frame parts that constitute the outer peripheral part of the main part 540, namely, an upper frame part 541, two side frame parts 542, and a lower frame part 543. The upper frame part 541 has a rod-shaped shape that is long in the left-right direction. Each of the two side frame parts 542 has a rod-shaped shape that is long in the up-down direction. The two side frame parts 542 are arranged side by side in the left-right direction with a space therebetween. The left end of the upper frame part 541 is connected to the upper end of the left side frame part 542, and the right end of the upper frame part 541 is connected to the upper end of the right side frame part 542. The lower frame part 543 has a rod-shaped shape that is long in the left-right direction. The lower frame part 543 is located below the upper frame part 541. The left end of the lower frame part 543 is connected to the lower end of the left side frame part 542, and the right end of the lower frame part 543 is connected to the lower end of the right side frame part 542. Thereby, the main part 540 is in a square frame shape. The four leg parts 544 respectively project rearward from the four corners of the main part 540. That is, the leg parts 544 project rearward from each of the connection points where the left end of the upper frame part 541 is connected to the upper end of the left side frame part 542, the connection point where the right end of the upper frame part 541 is connected to the upper end of the right side frame part 542, the connection point where the left end of the lower frame part 543 is connected to the lower end of the left side frame part 542, and the connection point where the right end of the lower frame part 543 is connected to the lower end of the right side frame part 542. Each leg part 544 has a fixing hole 545 that opens on the rear side surface thereof.

[0058] The cross-sectional shape of each frame portion perpendicular to the longitudinal direction is polygonal. Note that the polygonal shape includes not only an exact polygon but also cases where the cross-sectional shape has sides with some distortion and cases where the cross-sectional shape has chamfered vertices. In the present embodiment, the cross-sectional shape of each frame portion is triangular. When the cross-sectional shape of the frame portion is polygonal, the surfaces of the frame portion include the surface facing the illumination unit 2. The surface of the frame portion facing the illumination unit 2 is the reflection surface 590. Note that the reflection surface 590 facing the illumination unit 2 means that when the reflection surface 590 is viewed in the direction from the illumination unit 2 toward the outer cover body 530 (i.e., the forward direction in the front-rear direction), the reflection surface 590 can be seen without being hidden. For this reason, the reflection surface 590 does not have to face the illumination unit 2 directly, that is, it may be inclined with respect to a virtual plane perpendicular to the direction from the illumination unit 2 toward the outer cover body 530 (i.e., a virtual plane perpendicular to the front-rear direction). In the present embodiment, the reflection surface 590 is inclined slightly toward the inner cover body 550 side with respect to a virtual plane perpendicular to the direction from the illumination unit 2 toward the outer cover body 530.

[0059] In the present embodiment, the reflection surface 590 has higher light reflectivity than the portion other than the reflection surface 590 on the surface of the main portion 540. In the present embodiment, a process for imparting light reflectivity to the reflection surface 590 is performed. For example, the reflection surface 590 is painted with a light-reflective paint, thereby imparting light reflectivity to the reflection surface 590. The light-reflective paint is, for example, white paint or metallic paint. Also, the reflection surface 590 may be provided with light reflectivity by attaching a reflective sheet to the reflection surface 590.

[0060] The portion other than the reflection surface 590 on the surface of the main portion 540 may be painted with, for example, a paint having lower reflectivity than the reflection surface 590. The paint having lower reflectivity is, for example, a dark-colored paint such as black paint.

[0061] The outer cover body 530 has an opening that allows light to pass to the outside of the lighting fixture 1.

[0062] Specifically, the main part 540 of the outer cover body 530 has an opening that allows light to pass forward to the outside of the lighting fixture 1. That is, the outer cover body 530 has an opening 549 surrounded by an upper frame portion 541, two side frame portions 542, and a lower frame portion 543.

[0063] The outer cover body 530 also has an opening that allows light to pass from the lighting fixture 1 toward the outside when viewed in the front-rear direction. The portion of the opening on the lighting unit 2 side is closed by the holding body 510. In this embodiment, this opening includes four openings 546, 547, 547, and 548. The opening 546 is surrounded by the upper frame portion 541, the upper right leg portion 544, the upper left leg portion 544, and the holding body 510. One of the two openings 547, 547 is surrounded by the right side frame portion 542, the upper right leg portion 544, the lower right leg portion 544, and the holding body 510, and the other is surrounded by the left side frame portion 542, the upper left leg portion 544, the lower left leg portion 544, and the holding body 510. The opening 548 is surrounded by the lower frame portion 543, the lower right leg portion 544, the lower left leg portion 544, and the holding body 510. The above-described reflecting surface 590 is included in the portion of the inner peripheral surface of each opening on the side opposite to the lighting unit 2 side.

[0064] The outer cover body 530 is made of a metal such as, for example, an aluminum alloy die-cast material (ADC). The material of the outer cover body 530 is not limited to the above, and for example, the outer cover body 530 may be made of a resin material.

[0065] The inner cover body 550 has a function of allowing the light emitted from the light source unit 4 to pass through and emitting it toward the outer cover body 530. The inner cover body 550 includes a main part 551 and a support part 556 (see FIGS. 4 and 5).

[0066] The main part 551 is box-shaped with an opening 557 facing rearward. The main part 551 is generally cuboid-shaped and has a main board 552 constituting the front side surface, two side boards 554 respectively constituting the left and right side surfaces, a first end board 553 constituting the upper side surface, and a second end board 555 constituting the lower side surface. The main board 552 is rectangular when viewed in the front-rear direction, each side board 554 is rectangular and vertically long when viewed in the left-right direction, and each of the first end board 553 and the second end board 555 is rectangular and horizontally long when viewed in the up-down direction. The opening 557 is rectangular when viewed in the front-rear direction.

[0067] The support part 556 has a flange-like shape extending outward from the entire edge of the opening 557. When viewed in the front-rear direction, the outer periphery of the support part 556 is rectangular and larger than the outer periphery of the opening. The support part 556 has two fixing recesses 561 at each of its upper and lower end edges. At each end edge, the two fixing recesses 561 are arranged at intervals in the left-right direction. The fixing recess 561 has a shape that is recessed in an arc shape toward the inside in the up-down direction. That is, the fixing recess 561 is arc-shaped when viewed in the front-rear direction and is open to the front, rear, and outside in the left-right direction. From the arc-shaped edge of each fixing recess 561, a fixing rib 562 protrudes rearward. The fixing rib 562 is arc-shaped along the edge of the fixing recess 561 when viewed in the front-rear direction.

[0068] The inner cover body 550 has light transmissibility. That is, the inner cover body 550 is made of a material having light transmissibility. The inner cover body 550 in this embodiment is colorless and transparent. The inner cover body 550 is made of, for example, a transparent resin material. The resin material is, for example, an acrylic resin such as polymethyl methacrylate, but is not limited thereto. The inner cover body 550 may be made of quartz glass.

[0069] The outer surface of the inner cover body 550 has a flat shape. For this reason, the light passing through the inner cover body 550 is less likely to be scattered, and a corresponding lighting effect can be obtained.

[0070] The holding body 510 is an integral member that cannot be separated without being damaged. The holding body 510 includes a main board 511, two side boards 514, a first end board 513, a second end board 515, an overlapping portion 571, and a cover connection portion 572 (see FIGS. 4 and 5).

[0071] The main board 511 is rectangular when viewed in the front-rear direction. The two side boards 514 extend rearward from the left and right edges of the main board 511 respectively. Each side board 514 is rectangular and vertically long when viewed in the left-right direction. The first end board 513 extends rearward from the upper edge of the main board 511. The first end board 513 is rectangular and horizontally long when viewed in the up-down direction. The second end board 515 extends rearward from the lower edge of the main board 511. The first end board 513 is rectangular and horizontally long when viewed in the up-down direction. The upper ends of the left and right side boards 514 are connected to the left and right ends of the first end board 513 respectively, and the lower ends of the left and right side boards 514 are connected to the left and right ends of the second end board 515 respectively. Thus, the combination of the two side boards 514, the first end board 513, and the second end board 515 forms a rectangular frame shape. The main board 511 has an opening 512. The opening 512 is rectangular when viewed in the front-rear direction. The main board 511 has a boss 519 that protrudes rearward from its rear surface. The boss 519 is cylindrical, and there is a fixing hole 520 inside the boss 519. In the embodiment, the main board 511 has four bosses 519 and fixing holes 520 corresponding to each boss 519. Two bosses 519 are arranged side by side in the left-right direction at positions separated upward from the upper edge of the opening 512, and the other two bosses 519 are arranged side by side in the left-right direction at positions separated downward from the lower edge of the opening 512. The main board 511 has fixing holes 518 that penetrate in the front-rear direction. The main board 511 has four fixing holes 518. The four fixing holes 518 are located at the four corners of the main board 511 respectively.

[0072] The two overlapping portions 571 each extend rearward from the rear edges of the two side plates 514. The two overlapping portions 571 are arranged side by side in the left - right direction. The two overlapping portions 571 have substantially symmetrical shapes with respect to a virtual plane that is located between them and orthogonal to the left - right direction. Each overlapping portion 571 is in the shape of a flat plate having a thickness in the left - right direction and is long in the up - down direction when viewed in the left - right direction. The outer surface of the overlapping portion 571 is located inside the outer surface of the side plate 514. The cover connection portion 572 includes a first connection portion 573 and a second connection portion 574. Each of the first connection portion 573 and the second connection portion 574 includes a first rib 575 and a second rib 576. The first rib 575 of the first connection portion 573 and the first rib 575 of the second connection portion 574 are arranged one above the other in the up - down direction, and the first rib 575 of the first connection portion 573 is located above. The second rib 576 of the first connection portion 573 and the second rib 576 of the second connection portion 574 are arranged one above the other in the up - down direction, and the second rib 576 of the first connection portion 573 is located above. The first rib 575 projects inward in the left - right direction from a part of the rear edge of the overlapping portion 571. The first rib 575 has a thickness in the front - rear direction and is long in the up - down direction. The second rib 576 projects inward in the left - right direction from the inner surface in the left - right direction of the overlapping portion 571. The second rib 576 has a thickness in the up - down direction and is long in the front - rear direction. The first rib 575 and the second rib 576 in the first connection portion 573 are arranged with a gap in the front - rear direction and without a gap in the up - down direction. In the second connection portion 574, the first rib 575 and the second rib 576 are arranged with a gap in the front - rear direction and also with a gap in the up - down direction.

[0073] The holding body 510 is produced, for example, by injection - molding a resin material. Note that the material and production method of the holding body 510 are not limited to the above.

[0074] In this embodiment, each of the outer cover body 530 and the inner cover body 550 is fixed to the holding body 510 by a fixture, so that the holding body 510 holds the outer cover body 530 and the inner cover body 550.

[0075] As shown in FIGS. 2 and 10, in the cover body 5, the support portion 556 of the inner cover body 550 overlaps the rear surface of the main board 511 of the holding body 510 around the opening 512. The main portion 551 of the inner cover body 550 is disposed forward of the main board 511 through the opening 512. Each of the four bosses 519 fits into a corresponding fixing recess 561 and fixing rib 562. That is, each of the four bosses 519 fits into a corresponding one of the four fixing recesses 561 and fixing ribs 562. The rear surface of the boss 519 and the rear surface of the fixing rib 562 are flush. In this state, a screw 581, which is a fixture, is fitted into the fixing hole 520 inside each boss 519. The head 582 of this screw 581 is in contact with the rear surface of the boss 519. Thereby, the inner cover body 550 is held by the holding body 510.

[0076] The main portion 540 of the outer cover body 530 is in front of the main board 511 of the holding body 510 and the main portion 551 of the inner cover body 550. The main portion 540 and the main board 511 are separated in the front-rear direction, and the main body board 534 and the main portion 551 are separated in the front-rear direction. The rear surfaces of the four legs 544 of the outer cover body 530 are each in contact with four corners on the front surface of the main board 511 of the holding body 510. The four fixing holes 518 in the main board 511 and the four fixing holes 545 in the outer cover body 530 are respectively aligned. A screw 583, which is a fixture, is fitted into each fixing hole 518 from the rear side of the main board 511, and this screw 583 is further fitted into the fixing hole 545. Thereby, the outer cover body 530 is held by the holding body 510.

[0077] When viewed in the front-rear direction, the main body 551 of the inner cover body 550 is disposed inside the main body 540 of the outer cover body 530. That is, the frame portions (upper frame portion 541, two side frame portions 542, and lower frame portion 543) of the main body 540 of the outer cover body 530 are disposed outside the inner cover body 550 when viewed in the direction in which the outer cover body 530 and the light source unit 4 face each other. Thereby, the periphery of the main body 551 of the inner cover body 550 is surrounded by the frame portions (upper frame portion 541, two side frame portions 542, and lower frame portion 543) of the main body 540 of the outer cover body 530. Since each frame portion has a reflecting surface 590, the reflecting surface 590 is disposed outside the inner cover body 550 when viewed in the front-rear direction. Further, openings (openings 546, 547, 547, 548) are disposed outside the main body 551 of the inner cover body 550 when viewed in the front-rear direction. That is, when viewed in the front-rear direction, the periphery of the main body of the inner cover body 550 is surrounded by the openings (openings 546, 547, 547, 548).

[0078] The cover body 5 configured as described above includes a cover main body 50 including an outer cover body 530, a main board 511, two side boards 514, a first end board 513, a second end board 515, and an inner cover body 550, and two overlapping portions 571 extending rearward from the right and left edge portions of the cover main body 50, respectively.

[0079] (3) Lighting fixture As shown in FIGS. 7 and 8, with respect to the lighting unit 2 in a state where the screw 9 is removed, the cover body 5 is attached to the lighting unit 2 by inserting each overlapping portion 571 into the drainage space S2 of the side wall 20 and sliding it downward so that the first rib 575 of the second connecting portion 574 passes between the locking portions 270 and 271 of the lighting unit 2. Thereby, the cover body 5 is attached to the lighting unit 2. In this state, by attaching the screw 9 to the screw hole 232 of the recess 231 of the upper second side wall 23 of the lighting unit 2, the head 90 of the screw 9 is positioned above the overlapping portion 571 on the right side of the cover body 5. Thereby, the cover body 5 is attached to the lighting unit 2 in a state where upward movement is restricted.

[0080] The cover body 5 is attached to the lighting unit 2 so as to cover the light source unit 4 and the support member 3 from the front side. The cover main body 50 is located in front of the support member 3. The light source unit 4 of the lighting unit 2 is disposed inside the main portion 551 of the inner cover body 550. Each of the two overlapping portions 571 is disposed inside the lighting unit 2. Each overlapping portion 571 is disposed along the outer wall portion 22 in the lighting unit 2 so as to overlap the inner surface of this outer wall portion 22. The fixing piece 538 closes the front opening of the drainage space S2.

[0081] The first connection portion 573 is connected to the first locking portion 270 of the lighting unit 2, and the second connection portion 574 is connected to the second locking portion 271 of the lighting unit 2. That is, in the first connection portion 573, the first rib 575 and the second rib 576 sandwich the rib 272 of the first locking portion 270. In the second connection portion 574, the first rib 575 and the second rib 576 sandwich the rib 272 of the second locking portion 271. Further, the second rib 576 of the second connection portion 574 is supported from below by the rib 273 of the second locking portion 271 of the lighting unit 2.

[0082] In the lighting fixture 1 of the present embodiment, when the light source unit 4 emits light, the light sequentially passes through the inner cover body 550 and the outer cover body 530 and is emitted to the outside of the lighting fixture 1. At this time, each of the inner cover body 550 and the outer cover body 530 controls a combination (lighting effect) such as the intensity of the light emitted to the outside of the lighting fixture 1, the distribution of the light intensity, the direction of the light, the degree of light scattering, and the color of the light. In the present embodiment, since the inner cover body 550 is colorless and transparent and its outer surface is flat, when the light passes through the inner cover body 550, no color change occurs and it is difficult to be scattered. The light further passes through the openings 546, 547, 548, 549 of the outer cover body 530. Further, the inner cover body 550 can be easily visually recognized from the outside through the openings 546, 547, 548, 549 of the outer cover body 530.

[0083] After passing through the inner cover body 550 and then passing through the outer cover body 530 and exiting to the outside, the light that exits to the outside includes light that passes through the openings (openings 546, 547, 547, 548) surrounding the main part of the inner cover body and heads outward in the surroundings when viewed in the front-rear direction of the lighting fixture 1. In FIGS. 9, 10, and 11, the paths of the light passing through the openings 546, 547, 548 are indicated by dashed arrows. The light passing through each of the openings 546, 547, 547, 548 includes light that heads toward the outside of the lighting fixture 1 without reaching the reflecting surface 590 on the inner surface of each of the openings 546, 547, 547, 548. This light travels in a direction that is inclined relatively shallowly with respect to a virtual plane orthogonal to the front-rear direction. If only such light exits from each of the openings 546, 547, 547, 548, shadows will occur in the vicinity around the lighting fixture 1 on the installation surface where the lighting fixture 1 is installed. However, in this embodiment, the light exiting from each of the openings 546, 547, 547, 548 includes light that exits after being reflected by the reflecting surface 590. The light reflected by the reflecting surface 590 can travel in a direction that is inclined relatively deeply with respect to a virtual plane orthogonal to the front-rear direction toward the rear side. Therefore, light can reach the vicinity around the lighting fixture 1 on the installation surface. Thereby, the shadows in the vicinity around the lighting fixture can be suppressed.

[0084] Also, in this embodiment, the main board 511 in the holding body 510 is arranged at a distance from the support member 3 in front of the support member 3. Further, the two side plates 514, the first end plate 513, and the second end plate 515 in the holding body 510 are arranged between the main board 511 and the support member 3 on the outer periphery of the main board 511. For this reason, the holding body 510 makes the support member 3 difficult to be visually recognized from the outside of the lighting fixture 1. Thereby, the appearance of the lighting fixture 1 is improved.

[0085] In addition, in the lighting fixture 1 of the present embodiment, the lighting unit 2 has two side walls 20 sandwiching the accommodation space S1, and each side wall 20 includes an inner wall portion 21 facing the accommodation space S1 and an outer wall portion 22 located outside the inner wall portion 21. Further, the cover body 5 has a cover main body 50 located in front of the support member 3 and two overlapping portions 571 respectively extending from the cover main body 50 so as to overlap the inner surfaces of the outer wall portions 22 of the two side walls 20. Furthermore, the support member 3 includes a main body portion 30 closing the accommodation space S1 and two side wall portions 31 extending from the main body portion 30 so as to overlap the outer surfaces of the inner wall portions 21 of the two side walls 20 respectively.

[0086] Therefore, the lighting fixture 1 has a first water-stop structure in which the outer wall portion 22 of the lighting unit 2 and the overlapping portion 571 of the cover body 5 overlap, and a second water-stop structure in which the side wall portion 31 of the support member 3 and the inner wall portion 21 of the lighting unit 2 overlap. Therefore, the ingress of water from between the lighting unit 2 and the cover body 5 to the accommodation space S1 inside the lighting unit 2 can be suppressed by the two-stage water-stop structure formed by a part of the configurations of the lighting unit 2, the cover body 5, and the support member 3. Accordingly, in the lighting fixture 1 of the present embodiment, it is not necessary to use a packing having weather resistance, so that a decrease in the appearance quality can be suppressed, and a waterproof function comparable to that in the case of using a packing can be exhibited.

[0087] 3. Modification In the embodiment, the inner cover body 550 is colorless and transparent, and the outer surface of the inner cover body 550 is flat, but the configuration of the inner cover body 550 is not limited thereto. For example, the inner cover body 550 may be milky white, may be colored in a color other than white, or the outer surface of the inner cover body 550 may have irregularities.

[0088] The configuration of the outer cover body 530 is not limited to the embodiment. The outer cover body 530 includes a main portion 540 that faces the lighting unit 2 with a space therebetween. The main portion 540 has a reflecting surface 590. The reflecting surface 590 is disposed outside the inner cover body 550 when viewed in the direction in which the outer cover body 530 and the light source unit 4 face each other, and the reflecting surface 590 faces the lighting unit 2 side. Thus, it may have an appropriate configuration. For example, in the embodiment, the rod-shaped frame portion has the reflecting surface 590, but it is not limited to the frame portion, and it is sufficient that the portion disposed outside the inner cover body 550 in the main portion 540 has the reflecting surface 590.

[0089] In the embodiment, the reflecting surface 590 is flat, but the reflecting surface 590 may have an appropriate shape such as a curved shape or a bent shape as long as it faces the lighting unit 2 side.

[0090] In the lighting fixture, it is preferable that an optical path is configured such that light travels from the inner cover body 550 to the reflecting surface 590, is further reflected by the reflecting surface 590, and then exits to the outside of the lighting fixture 1. In the embodiment, this optical path is configured by the four openings 546, 547, 547, and 548, but the optical path may be configured by other appropriate configurations.

[0091] 4. Aspect The lighting fixture (1) of the first aspect includes a lighting unit (2), an outer cover body (530) that allows light to pass through, and an inner cover body (550) that transmits light. The lighting unit (2) includes a light source unit (4) that emits light toward the outside of the lighting unit (2). The outer cover body (530) is disposed so as to face the light source unit (4). The inner cover body (550) is interposed between the outer cover body (530) and the light source unit (4). The outer cover body (530) includes a main portion (540) that faces the lighting unit (2) with a space therebetween. The main portion (540) has a reflecting surface (590). The reflecting surface (590) is disposed outside the inner cover body (550) when viewed in the direction in which the outer cover body (530) and the light source unit (4) face each other, and faces the lighting unit (2) side.

[0092] According to this aspect, when the lighting fixture (1) is installed on an installation surface such as a wall surface, the generation of shadows in the vicinity around the lighting fixture (1) on the installation surface can be suppressed by the light reflected by the reflecting surface (590).

[0093] In the second aspect, in the first aspect, the reflecting surface (590) has a higher light reflectivity than the portion other than the reflecting surface (590) on the surface of the main part (540).

[0094] According to this aspect, the generation of shadows in the vicinity around the lighting fixture (1) on the installation surface can be more suppressed.

[0095] In the third aspect, in the first or second aspect, the reflecting surface (590) is coated with a light-reflective paint.

[0096] According to this aspect, the generation of shadows in the vicinity around the lighting fixture (1) on the installation surface can be more suppressed.

[0097] In the fourth aspect, in any one of the first to third aspects, the portion of the surface of the main part (540) excluding the reflecting surface (590) is coated with a paint having a lower reflectivity than the reflecting surface (590).

[0098] In the fifth aspect, in any one of the first to fourth aspects, the main part (540) includes a rod-shaped frame portion. The frame portion is disposed outside the inner cover body (550) when viewed in the direction in which the outer cover body (530) and the light source portion (4) face each other. The frame portion has a reflecting surface (590).

[0099] In the sixth aspect, in the fifth aspect, the shape of the cross section of the frame portion orthogonal to the longitudinal direction is a polygonal shape.

Explanation of Reference Numerals

[0100] 1 Lighting fixture 2 Lighting unit 4 Light source portion 5 Cover body 510 Holder 530 Outer cover body 540 Main part 541 Upper frame part (frame part) 542 Side frame part (frame part) 543 Lower frame part (frame part) 550 Inner cover body 590 Reflective surface

Claims

1. An illumination device comprising an illumination unit, an outer cover body that allows light to pass through, and an inner cover body that allows light to transmit, wherein the illumination unit includes a light source unit that emits light toward the outside of the illumination unit, the outer cover body is arranged to face the light source unit, the inner cover body is interposed between the outer cover body and the light source unit, the outer cover body includes a main portion that faces the illumination unit with a space therebetween, the main portion has a reflecting surface, and the reflecting surface is arranged outside the inner cover body when viewed in the direction in which the outer cover body and the light source unit face each other, and faces the illumination unit side. Illumination device.

2. The reflecting surface has a higher light reflectivity than a portion other than the reflecting surface on the surface of the main portion. The illumination device according to Claim 1.

3. The reflecting surface is coated with a light-reflective paint. The illumination device according to Claim 1.

4. A portion of the surface of the main portion excluding the reflecting surface is coated with a paint having a lower reflectivity than the reflecting surface. The illumination device according to Claim 1.

5. The main portion includes a rod-shaped frame portion, the frame portion is arranged outside the inner cover body when viewed in the direction in which the outer cover body and the light source unit face each other, and the frame portion has the reflecting surface. The illumination device according to Claim 1.

6. The shape of a cross section of the frame portion orthogonal to the longitudinal direction is a polygonal shape. The illumination device according to Claim 5.

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