Lighting fixtures

Abstract

To provide a lighting fixture that can control a lighting fixture from excessively projecting from a fitting surface.SOLUTION: A lighting fixture 100 includes a light source part 110; a reflection member 180; and a storage part 170. The light source part 110 emits light. The reflection member 180 reflects light. The storage part 170 stores the reflection member 180. The storage part 170 includes a wall part 171 and a flange part 172. The wall part 171 extends on a side of a first direction D1 from which light is emitted. The flange part 172 extends on a side of a second direction D2 from the wall part 171. The second direction D2 crosses with the first direction D1 and indicates a direction toward the wall part 171 from the reflection member 180. An end part 181 of the reflection member 180 in the first direction D1 does not overhang in the second direction D2.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a lighting fixture. [Background technology]

[0002] The lighting device described in Patent Document 1 includes a main body, a mounting frame, and a decorative frame. The main body includes a light source and a cone. The light source emits light. The cone is a cylindrical reflective member. The cone has a cone flange. The mounting frame fixes the main body to a ceiling. The mounting frame includes a wall portion, a flange portion, and a mounting member. The wall portion is annular. The flange portion protrudes outward from a lower end of the wall portion. The flange portion abuts against the ceiling. The mounting member contacts the ceiling. The ceiling is sandwiched between the mounting member and the flange portion, and the mounting frame is fixed to the ceiling. The decorative frame is fixed to the lower end of the mounting frame. The cone flange is sandwiched between the decorative frame and the flange portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-60752 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in a lighting fixture such as the lighting device described in Patent Document 1, the flange portion, the cone brim portion, and the decorative frame are aligned in the direction in which the light is emitted, causing the lighting fixture to protrude excessively from the mounting surface such as a ceiling.

[0005] The present invention has been made in consideration of the above problems, and has an object to provide a lighting fixture that can prevent the lighting fixture from excessively protruding from an attachment surface. [Means for solving the problem]

[0006] The lighting device disclosed in the present application includes a light source unit, a reflecting member, and a housing unit. The light source unit emits light. The reflecting member reflects the light. The housing unit houses the reflecting member. The housing unit has a wall unit and a flange unit. The wall unit extends on a side in a first direction in which the light is emitted. The flange unit extends from the wall unit in a second direction. The second direction intersects with the first direction and indicates a direction from the reflecting member to the wall unit. The reflecting member has a first end unit on a side in the first direction. The first end unit does not protrude in the second direction.

[0007] The reflecting member disclosed in the present application is preferably detachable from an opening on the first direction side of the housing portion.

[0008] The first end portion disclosed in the present application is preferably disposed at the same position as the flange portion, or at a position closer to the light source portion than the flange portion.

[0009] The reflective member disclosed in the present application preferably further includes a regulating member. The regulating member preferably regulates movement of the reflective member toward a third direction opposite to the first direction. The storage section preferably includes a biasing section. The biasing section preferably holds the reflective member and biases the reflective member toward the third direction. The regulating member is preferably disposed on an outer circumferential surface of the reflective member and abuts against the wall section.

[0010] The restricting member disclosed in the present application is preferably a protrusion. The protrusion preferably protrudes in the second direction. The wall preferably has an abutment portion. The abutment portion preferably abuts against the protrusion. Effect of the Invention

[0011] According to the lighting fixture of the present invention, it is possible to prevent the lighting fixture from excessively protruding from the mounting surface. [Brief description of the drawings]

[0012] [Figure 1]1 is a perspective view showing a lighting fixture according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view of a lighting device according to the present embodiment. [Diagram 3] FIG. 3 is an enlarged view of the fixed frame in FIG. 2. [Figure 4] FIG. 2 is a view of the lighting fixture as seen from the side of the illumination surface. [Diagram 5] 4A and 4B are diagrams showing a storage section of the lighting fixture according to the embodiment; [Figure 6] 5A and 5B are diagrams showing a cross section of a second reflecting member and a cross section of a cover portion of the lighting device according to the present embodiment. [Figure 7] 4 is a cross-sectional view of a housing portion of the lighting device according to the embodiment. FIG. [Figure 8] 4 is an exploded perspective view showing a second reflecting member and a cover portion of the lighting device according to the embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference characters and description thereof will not be repeated.

[0014] A lighting fixture 100 according to an embodiment of the present invention will be described with reference to Fig. 1. Fig. 1 is a perspective view showing a lighting fixture 100 according to an embodiment of the present invention. As shown in Fig. 1, the lighting fixture 100 is, for example, a downlight. The lighting fixture 100 is attached to a mounting surface in a room. The mounting surface is, for example, a ceiling in a room. The mounting surface may also be a side wall in a room. The lighting fixture 100 emits light.

[0015] The lighting device 100 includes a light source unit U1 and a rotation unit U2. The light source unit U1 emits light. The rotation unit U2 supports the light source unit U1 so that it can tilt freely.

[0016] Next, the lighting device 100 will be described in detail with reference to Fig. 1 and Fig. 2. Fig. 2 is a cross-sectional view of the lighting device 100 according to the embodiment. As shown in Fig. 2, the light source unit U1 includes a light source section 110, a first reflecting member 120, and a heat dissipation section 130.

[0017] The heat dissipation section 130 is, for example, a heat sink. The heat dissipation section 130 is fixed to the upper part of the light source section 110. As shown in FIG. 1 and FIG. 2, the heat dissipation section 130 has a plurality of fins 131 and a bottom section 132. The heat dissipation section 130 dissipates heat by the plurality of fins 131, and suppresses the temperature rise of the light source section 110. The heat dissipation section 130 is formed of a material having high thermal conductivity, and is preferably formed of, for example, a metal. Among metals, it is preferable that the heat dissipation section 130 is formed of, for example, aluminum or an aluminum alloy, in consideration of ease of molding and weight reduction of the lighting device 100.

[0018] The light source unit 110 emits light. The light source unit 110 includes a substrate 112, a light source 113, a light source holding unit 114, and a light source cover unit 115. The light source unit 110 is fixed to a bottom 132 of the heat dissipation unit 130. The light source 113 emits light. The light source 113 includes a plurality of light emitting elements and is mounted on the mounting surface of the substrate 112. In this embodiment, the light source 113 is an LED (Light Emitting Diode) array and includes a plurality of LEDs. In this embodiment, the light source 113 is a COB (Chip on Board) type formed by sealing a plurality of LEDs with a phosphor. The light source 113 may be an SMD (Surface Mount Device) type in which an LED and a phosphor are integrated into one unit to form an LED chip, and the plurality of LED chips are placed on the mounting surface of the substrate 112 and electrically connected to the conductive pattern of the substrate 112.

[0019] The surface of the substrate 112 opposite to the mounting surface is in contact with the bottom 132 of the heat dissipation section 130. Therefore, the heat generated by the light source section 110 is transferred to the heat dissipation section 130 and is effectively dissipated by the heat dissipation section 130.

[0020] The light source holding unit 114 is, for example, a socket. The light source holding unit 114 holds the substrate 112. The light source holding unit 114 has a substantially circular opening at a position overlapping the light source 113. Almost all of the light emitted from the light source 113 passes through the opening.

[0021] The light source cover portion 115 faces the light source 113. The light source cover portion 115 is, for example, a glass plate. The light source cover portion 115 is transparent or translucent and transmits light emitted by the light source 113. For example, the light source cover portion 115 is a cover member that protects the light source 113.

[0022] The first reflecting member 120 reflects the light emitted from the light source 113. The first reflecting member 120 is cylindrical. The diameter of the first reflecting member 120 gradually increases with increasing distance from the light source 113. For example, the first reflecting member 120 is substantially truncated cone. In order to efficiently reflect the light emitted from the light source 113, it is preferable that at least the inner surface of the first reflecting member 120 is subjected to a reflective treatment. The reflective treatment includes, for example, a mirror surface, a white paint, a silver paint, or a shiny metal plating treatment. Alternatively, the color of the first reflecting member 120 may be a color with high light reflectance such as white or silver. The first reflecting member 120 is formed from metal or resin.

[0023] As shown in Fig. 2, the rotating unit U2 includes a fixed frame 140, a rotating frame 150, and an attachment spring 160. The fixed frame 140 supports the rotating frame 150 so as to be freely rotatable. The fixed frame 140 is annular or approximately annular. The fixed frame 140 supports the rotating frame 150 so as to be freely rotatable in the circumferential direction of the fixed frame 140. Here, the fact that the fixed frame 140 is approximately annular means that the fixed frame 140 is partially interrupted in the circumferential direction.

[0024] The rotating frame 150 supports the light source unit U1 so as to be able to tilt freely. The rotating frame 150 is annular or approximately annular. The rotating frame 150 rotates in the circumferential direction of the fixed frame 140. The rotating frame 150 has a light leakage prevention portion 151.

[0025] The light leakage prevention portion 151 covers the gap so that no gap is generated between the light source unit U1 and the rotating frame 150 when the light source unit U1 tilts. In other words, the light leakage prevention portion 151 prevents light from leaking from between the light source unit U1 and the rotating frame 150 when the light source unit U1 tilts.

[0026] The mounting springs 160 mount the light source unit U1 at a mounting position. The mounting position is, for example, a ceiling (not shown). The mounting springs 160 are fixed to the fixed frame 140. The mounting springs 160 are made of elastic metal. The mounting springs 160 are formed by bending a thin plate-like member. In this embodiment, the mounting springs 160 include two mounting springs 160, but the number of mounting springs 160 may be three or more.

[0027] Next, the fixed frame 140 will be described in more detail with reference to Figures 1 to 3. Figure 3 is an enlarged view of the fixed frame 140 in Figure 2. In order to facilitate understanding of the invention, only the fixed frame 140 is shown in Figure 3.

[0028] As shown in FIG. 3, the fixed frame 140 has a housing portion 170, a second reflecting member 180, and a cover portion 190.

[0029] The housing portion 170 houses the second reflecting member 180 and the cover portion 190. The housing portion 170 has a cylindrical shape. The diameter of the housing portion 170 is a diameter LA. The third direction D3 is the opposite direction to the first direction D1. In other words, the third direction D3 is the direction from the housing portion 170 to the light source portion 110. The housing portion 170 has a wall portion 171 and a flange portion 172.

[0030] The wall portion 171 extends toward the first direction D1. The first direction D1 indicates the direction in which light is emitted. The wall portion 171 is located in a ceiling hole when the accommodation portion 170 is attached to the ceiling. In other words, when the accommodation portion 170 is attached to the ceiling, the wall portion 171 is accommodated in the hole in the ceiling.

[0031] Flange portion 172 extends in second direction D2 from wall portion 171. Second direction D2 intersects with first direction D1 and indicates a direction moving away from first direction D1. Specifically, second direction D2 indicates a direction from second reflecting member 180 toward wall portion 171. Flange portion 172 abuts against a ceiling (not shown), for example, when accommodation portion 170 is attached to the ceiling.

[0032] The second reflecting member 180 reflects the light emitted from the light source 113. The second reflecting member 180 corresponds to an example of a “reflecting member.” In addition, the second reflecting member 180 further reflects the light reflected by the first reflecting member 120.

[0033] The second reflecting member 180 is a cylinder having a substantially truncated cone shape. The inner diameter of the second reflecting member 180 gradually increases with increasing distance from the light source 113.

[0034] The second reflecting member 180 is made of, for example, a synthetic resin. The second reflecting member 180 may also be made of a metal. In order to efficiently reflect the light emitted from the light source 113, it is preferable that at least the inner surface of the second reflecting member 180 is subjected to a reflective treatment. The reflective treatment may include, for example, a mirror surface, a white paint, a silver paint, or a shiny metal plating treatment. Alternatively, the color of the second reflecting member 180 may be a color with high light reflectance, such as white or silver.

[0035] The second reflecting member 180 has a first end 181, a second end 182, a support portion 184, and an extension wall 187. The first end 181 is an end on the side of the first direction D1. The first end 181 is annular. The first end 181 has a first opening 180A. The second end 182 is an end on the side of the third direction D3. The second end 182 is annular. The second end 182 has a second opening 180B. The first opening 180A and the second opening 180B are substantially circular. The second opening 180B may be substantially elliptical. The first opening 180A and the second opening 180B are aligned in the first direction D1.

[0036] As shown in FIG. 2, the first opening 180A is an opening located on the side of the irradiation surface onto which light is irradiated. Specifically, the first opening 180A is an opening farther from the light source unit 110 than the second opening 180B. That is, the first opening 180A is disposed on the side of the first direction D1 than the second opening 180B. As shown in FIG. 3, the diameter LB of the first opening 180A is different from the diameter LC of the second opening 180B. The diameter LB of the first opening 180A is larger than the diameter LC of the second opening 180B.

[0037] The second opening 180B is an opening located on the side of the light source unit 110. Specifically, the second opening 180B is an opening closer to the light source unit 110 than the first opening 180A. That is, the second opening 180B is disposed in the third direction D3 than the first opening 180A. The second opening 180B is inclined with respect to the first opening 180A. The light emitted from the light source unit 110 enters from the first opening 180A, passes through the second opening 180B, and is emitted to the side of the irradiation surface.

[0038] 3, the support portion 184 extends in the second direction D2 from the outer circumferential surface OS of the second reflecting member 180. Specifically, the support portion 184 extends from the outer circumferential surface OS of the second reflecting member 180 toward the wall portion 171 of the accommodation portion 170.

[0039] The extension wall 187 extends from a part of the support portion 184. The extension wall 187 extends in the first direction D1. The extension wall 187 faces the wall portion 171.

[0040] The cover portion 190 covers the second opening 180B of the second reflecting member 180. The cover portion 190 is disposed at a position closer to the light source unit 110 than the second reflecting member 180. The cover portion 190 has a dome shape. The cover portion 190 has an opening on the side in the first direction D1.

[0041] The cover portion 190 has a curved portion 191 and an annular portion 192. The curved portion 191 faces the second opening 180B. The curved portion 191 protrudes toward the light source unit 110 and covers the second opening 180B. In other words, the curved portion 191 protrudes toward the third direction D3.

[0042] The annular portion 192 is supported by the support portion 184. The annular portion 192 is disposed on the second direction D2 side of the curved portion 191. The annular portion 192 surrounds the curved portion 191.

[0043] Continuing with reference to FIG. 3, first end 181 and second end 182 of second reflecting member 180 will be described in more detail.

[0044] 3, since second opening 180B is inclined with respect to first opening 180A, a portion of second end 182 is located on the third direction D3 side of support portion 184. In addition, another portion of second end 182 is continuous with support portion 184.

[0045] The first end 181 of the second reflecting member 180 is an end on the side of the first direction D1. The first end 181 does not protrude in the second direction D2. That is, the first end 181 of the second reflecting member 180 does not extend in the second direction D2 in which the flange portion 172 extends. In other words, the second reflecting member 180 does not have a flange portion. Therefore, since there is no portion protruding from the first end 181 in the second direction D2, the first end 181 does not overlap with the flange portion 172 in the first direction D1. As a result, it is possible to prevent the lighting device 100 from protruding excessively from the ceiling.

[0046] Also, for example, when the first end 181 protrudes in the second direction D2 like a flange, the first end 181 protruding in the second direction D2 like a flange and the flange 172 of the storage section 170 surround the first opening 180A. Therefore, both the part protruding in the second direction D2 and the flange 172 may be more noticeable than the first opening 180A. However, since the lighting device 100 of the present embodiment does not have a part protruding from the first end 181 in the second direction D2, it is possible to prevent both the first end 181 and the flange 172 from being more noticeable in the lighting device 100 attached to the ceiling. As a result, the lighting device 100 is more likely to reduce the discomfort it gives to the user.

[0047] In addition, since second reflecting member 180 does not have a portion that protrudes in second direction D2 from first end 181, first opening 180A can be made larger than a reflecting member that has a flange at the first end. As a result, it is possible to prevent the light irradiation range on the irradiation surface from becoming smaller.

[0048] Furthermore, first end 181 of second reflecting member 180 is disposed in the same position as flange 172 along first direction D1, or in a position closer to light source unit 110 than flange 172. In other words, first end 181 does not protrude further in first direction D1 than flange 172 of housing unit 170. Therefore, for example, first end 181 does not protrude from the ceiling surface. This can prevent first end 181 from protruding from the ceiling surface and becoming conspicuous. As a result, the discomfort felt by the user due to first end 181 being conspicuous can be reduced.

[0049] Second reflecting member 180 is detachable from first opening 180A on the first direction D1 side of housing portion 170. Therefore, second reflecting member 180 can be removed from lighting fixture 100 while lighting fixture 100 is attached to a ceiling. Also, second reflecting member 180 can be attached to lighting fixture 100 while lighting fixture 100 is attached to a ceiling. As a result, the efficiency of the work of changing the angle of lighting fixture 100 and the efficiency of the work of maintaining lighting fixture 100 are improved.

[0050] Next, second reflecting member 180 will be described in detail with reference to Fig. 3 and Fig. 4. Fig. 4 is a diagram of lighting fixture 100 viewed from the side of the irradiation surface. Specifically, in Fig. 4, lighting fixture 100 attached to a ceiling is viewed from the side of the irradiation surface.

[0051] First end 181 of second reflecting member 180 has first inner edge 181A and first outer edge 181B. First inner edge 181A indicates the edge of the inner surface IS of second reflecting member 180 on the first direction D1 side. First outer edge 181B indicates the edge of the outer circumferential surface OS of second reflecting member 180 on the first direction D1 side. First outer edge 181B is located closer to the second direction D2 side than first inner edge 181A. The width from first inner edge 181A to first outer edge 181B in the second direction D2 is a first width LD.

[0052] The second end 182 of the second reflecting member 180 has a second inner edge 182A and a second outer edge 182B. The second inner edge 182A indicates the edge of the inner surface IS of the second reflecting member 180 on the third direction D3 side. The second outer edge 182B indicates the edge of the outer circumferential surface OS of the second reflecting member 180 on the third direction D3 side. The second outer edge 182B is located closer to the second direction D2 side than the second inner edge 182A. The width from the second inner edge 182A to the second outer edge 182B in the second direction D2 is a second width LE.

[0053] The first width LD is equal to the second width LE. In addition, the width of the second reflecting member 180 from the second end 182 to the first end 181 is substantially the same. The width from the second end 182 to the first end 181 being substantially the same means that the first end 181 of the second reflecting member 180 does not extend to the side of the second direction D2. In other words, the second reflecting member 180 does not have a flange at the first end 181. Therefore, the first end 181 does not overlap with the flange 172 in the first direction D1. In other words, the lighting device 100 does not excessively protrude from the ceiling. As a result, the sense of unity between the ceiling and the lighting device 100 is improved, and the sense of discomfort given to the user can be reduced.

[0054] Also, the first width LD may be smaller than the second width LE. That is, since the first end 181 of the second reflecting member 180 does not extend toward the second direction D2, the second reflecting member 180 does not have a flange at the first end 181. Therefore, the first end 181 does not overlap with the flange 172 in the first direction D1. That is, the lighting device 100 does not excessively protrude from the ceiling. As a result, the sense of unity between the ceiling and the lighting device 100 is improved, and the sense of discomfort felt by the user can be reduced.

[0055] For example, when the first end portion protrudes in the second direction D2 like a flange portion, the portion protruding from the first end portion in the second direction D2 often overlaps with the flange portion in the first direction D1. The reason is that in order to suppress the second reflecting member from moving toward the third direction D3, it is necessary to make the flange portions of the first end portion overlap with each other. Therefore, the flange portions of the first end portion overlap with each other, and the lighting fixture protrudes excessively from the ceiling toward the irradiation surface side. Furthermore, for example, when the flange portion and the flange portion of the first end portion overlap, a positioning portion may be created that determines the position where the flange portion and the flange portion of the first end portion abut. When the positioning portion is created, the thickness of the flange portion in the first direction D1 must be increased. Therefore, the thickness of the flange portion in the first direction D1 and the thickness of the portion of the first end portion protruding in the second direction D2 cause the lighting fixture to protrude excessively from the ceiling toward the irradiation surface side. However, in lighting fixture 100 of the present embodiment, first end 181 does not overlap flange 172 in first direction D1. Therefore, for example, lighting fixture 100 does not excessively protrude from the ceiling toward the illumination surface. That is, lighting fixture 100 is prevented from standing out against the ceiling. As a result, the sense of unity between the ceiling and lighting fixture 100 is improved, and the sense of discomfort felt by the user can be reduced.

[0056] Also, the portion of the flange where the flange and the first end abut may be cut to reduce the thickness of the portion protruding from the ceiling in the first direction D1. However, in lighting device 100 of the present embodiment, first end 181 does not overlap with flange 172, so there is no need to cut flange 172. Therefore, when manufacturing storage section 170, the step of machining flange 172 can be eliminated. As a result, the cost of manufacturing storage section 170 can be reduced.

[0057] Furthermore, when processing flange 172, the processed flange 172 needs to have a certain thickness. However, in lighting device 100 of the present embodiment, flange 172 is not processed, so flange 172 may be thin. As a result, the amount of material required for manufacturing housing 170 can be reduced.

[0058] Furthermore, it is possible to reduce the thickness of flange 172 of housing 170, thereby reducing the weight of housing 170. As a result, the weight of lighting fixture 100 can be reduced, and the burden on the ceiling can be reduced.

[0059] Furthermore, second reflecting member 180 may have the same width from second end 182 to first end 181. Therefore, there are fewer irregularities and distortions between second end 182 and first end 181 of second reflecting member 180. As a result, it is possible to suppress a decrease in the light reflection efficiency.

[0060] Next, the lighting device 100 will be described in more detail with reference to Figures 3 and 5. Figure 5 shows the receiving section 170.

[0061] As shown in FIG. 3 and FIG. 5, the accommodation portion 170 further includes a biasing portion 173. As shown in FIG. 5, a plurality of the biasing portions 173 are arranged at a predetermined interval along the circumferential direction of the accommodation portion 170. The predetermined interval is, for example, 120 degrees. That is, the biasing portions 173 are arranged on the wall portion 171 of the accommodation portion 170 at intervals of 120 degrees. That is, three biasing portions 173 are arranged on the wall portion 171. Note that three or more biasing portions 173 may be arranged on the wall portion 171. Also, two biasing portions 173 may be arranged on the wall portion 171.

[0062] The biasing portion 173 holds the second reflecting member 180 and biases the second reflecting member 180 in the third direction D3. As shown in Fig. 3, the multiple biasing portions 173 come into contact with the support portion 184. The biasing portion 173 in contact with the support portion 184 biases the support portion 184 in the third direction D3. Therefore, the second reflecting member 180 housed in the housing portion 170 is biased in the third direction D3.

[0063] The urging portion 173 is a plate-shaped spring, and a base end thereof is fixed to the wall portion 171 of the accommodation portion 170 with a screw. As shown in Figures 3 and 5, the urging portion 173 protrudes toward the internal space of the accommodation portion 170. When the second reflecting member 180 is accommodated in the accommodation portion 170, the urging portion 173 abuts against the support portion 184.

[0064] Specifically, the second reflecting member 180 is pressed into the storage section 170 toward the third direction D3, and the support section 184 is disposed on the third direction D3 side relative to the biasing section 173. At this time, the biasing section 173 presses the support section 184 in a fourth direction D4 opposite to the second direction D2. The fourth direction D4 indicates a direction toward the center of the second reflecting member 180. Furthermore, the biasing section 173 also presses the support section 184 from the first direction D1 side. That is, the biasing section 173 holds the second reflecting member 180 while biasing the second reflecting member 180 in the third direction D3 so that the second reflecting member 180 does not move in the first direction D1. As a result, the biasing section 173 can suppress the second reflecting member 180 from falling off the storage section 170.

[0065] Next, lighting device 100 will be described in more detail with reference to Figures 3, 6, and 7. Figure 6 is a diagram showing a cross section of second reflecting member 180 and a cross section of cover portion 190. Figure 7 is a diagram showing a cross section of housing portion 170.

[0066] As shown in FIG. 3 and FIG. 6, the second reflecting member 180 has a restricting member 186. The restricting member 186 restricts the second reflecting member 180 from moving in the third direction D3 from a predetermined position. As shown in FIG. 3, the restricting member 186 is disposed between the wall portion 171 and the second reflecting member 180. Specifically, the restricting member 186 is disposed on the outer peripheral surface OS of the second reflecting member 180 and abuts against the wall portion 171. More specifically, the restricting member 186 abuts against the abutting portion 178 provided on the wall portion 171. Therefore, the biasing force of the biasing portion 173 can be strengthened to hold the second reflecting member 180. As a result, the second reflecting member 180 can be held with a force that does not allow the second reflecting member 180 to fall out of the storage portion 170, while the second reflecting member 180 can be suppressed from moving in the third direction D3 relative to the storage portion 170.

[0067] Moreover, the predetermined position is a position where a portion of the first end 181 facing the irradiation surface and a portion of the flange 172 facing the irradiation surface are substantially flush with each other. The term "substantially flush" includes a state where the position of the flange 172 in the first direction D1 and the position of the first end 181 in the first direction D1 are the same, and a state where the first end 181 does not protrude further in the first direction D1 than the flange 172. The term "substantially flush" may also include a state where the flange 172 does not protrude further in the first direction D1 than the first end 181. Therefore, the position of the first end 181 in the first direction D1 and the position of the flange 172 in the first direction D1 are not extremely separated. That is, the first end 181 and the flange 172 form a step, which can prevent the sense of unity between the storage section 170 and the second reflecting member 180 from being impaired. As a result, deterioration in the aesthetic appearance of the lighting fixture 100 can be suppressed.

[0068] Furthermore, inside the housing 170, the restricting member 186 restricts the second reflecting member 180 from moving from a predetermined position in the third direction D3. Therefore, the restricting member 186 is not disposed in a position visible to the user. In other words, the external appearance of the lighting device 100 is simplified. As a result, when the lighting device 100 is attached to a ceiling, the sense of unity between the ceiling and the lighting device 100 is improved.

[0069] Also, for example, when the portion protruding from the first end in the second direction D2 overlaps with the flange in the first direction D1, the width dimension of the flange in the second direction D2 is increased. This is to support the portion protruding from the first end in the second direction D2 by increasing the width dimension of the flange in the second direction D2. In other words, the distance from the inner edge to the outer edge of the flange is increased in order to support the protruding portion of the first end. Therefore, the flange of the storage unit may be noticeable against the ceiling.

[0070] On the other hand, the restricting member 186 of the second reflecting member 180 of the lighting device 100 of the present invention is disposed on the third direction D3 side of the first end 181. Therefore, the restricting member 186 is disposed inside the housing portion 170. That is, there is no member that overlaps with the flange portion 172 of the lighting device 100 of the present invention on the first direction D1 side. That is, compared with the flange portion supporting the protruding portion of the first end, the flange portion 172 of the present invention can have a smaller distance from the inner edge to the outer edge. Therefore, it is possible to prevent the flange portion 172 from being conspicuous against the ceiling. As a result, the sense of unity between the ceiling and the lighting device 100 is improved, and the sense of incongruity felt by the user can be reduced.

[0071] 3 and 6, the restricting member 186 is a protrusion 186A that protrudes in the second direction D2. The protrusion 186A protrudes from the outer circumferential surface OS of the second reflecting member 180 toward the wall portion 171. The protrusion 186A is disposed between the first end portion 181 and the second end portion 182. The protrusion 186A is annular. The diameter of the protrusion 186A is a diameter LG.

[0072] As shown in FIG. 7, the wall portion 171 has an inclined portion 175, a first wall portion 176, a second wall portion 177, and a contact portion 178.

[0073] As shown in FIG. 3, the inclined portion 175 faces the outer peripheral surface OS of the second reflecting member 180. Specifically, the inclined portion 175 faces a portion of the outer peripheral surface OS of the second reflecting member 180 on the first direction D1 side. The inclined portion 175 is disposed on the first direction D1 side of the second wall portion 177. That is, as shown in FIG. 7, the opening 170A on the first direction D1 side of the storage portion 170 is larger than the opening 170B on the third direction D3 side of the storage portion 170. Therefore, the first opening 180A on the first direction D1 side of the second reflecting member 180 can be enlarged within the range of the size of the opening 170A. As a result, the degree of freedom in designing the second reflecting member 180 can be improved.

[0074] Moreover, inclined portion 175 inclines from second wall portion 177 toward flange portion 172. The angle of inclined portion 175 is approximately the same as the angle of outer peripheral surface OS of second reflecting member 180. In other words, inclined portion 175 is aligned along outer peripheral surface OS of second reflecting member 180. Therefore, as shown in FIG. 3, gap A between second reflecting member 180 and inclined portion 175 can be made small. As a result, when second reflecting member 180 is accommodated in accommodation portion 170, excessive movement of second reflecting member 180 inside accommodation portion 170 can be suppressed.

[0075] Furthermore, as second reflecting member 180 is urged by urging portion 173, second reflecting member 180 moves in third direction D3, and second reflecting member 180 and inclined portion 175 approach each other. Therefore, gap A between second reflecting member 180 and inclined portion 175 can be made smaller. As a result, intrusion of water through gap A can be reduced.

[0076] 7, first wall portion 176 is disposed closer to the third direction D3 than second wall portion 177. Diameter LH of first wall portion 176 is smaller than diameter LG of protrusion portion 186A. In other words, when second reflecting member 180 is accommodated in accommodation portion 170, first wall portion 176 is located closer to the third direction D3 than protrusion portion 186A.

[0077] The second wall portion 177 is disposed closer to the first direction D1 than the first wall portion 176. Moreover, the second wall portion 177 is disposed closer to the third direction D3 than the inclined portion 175. That is, the second wall portion 177 is disposed between the first wall portion 176 and the inclined portion 175. Moreover, the second wall portion 177 faces the protrusion portion 186A in the second direction D2. The diameter LJ of the second wall portion 177 is larger than the diameter LH of the first wall portion 176. Moreover, the diameter LJ is larger than the diameter LG of the protrusion portion 186A.

[0078] The abutment portion 178 is a surface extending along the second direction D2. Specifically, the abutment portion 178 is a surface extending from the first wall portion 176 to the second wall portion 177. The abutment portion 178 overlaps the protrusion portion 186A in the first direction D1 and abuts against the protrusion portion 186A. Therefore, the second reflection member 180 does not move in the third direction D3 from the position where the protrusion portion 186A and the abutment portion 178 abut. As a result, when the second reflection member 180 is accommodated in the accommodation portion 170, it is possible to suppress the second reflection member 180 from excessively entering the third direction D3 side. In other words, it is possible to maintain a state in which the first end portion 181 and the flange portion 172 are approximately flush with each other.

[0079] Next, lighting device 100 will be described in more detail with reference to Figure 3 and Figures 6 to 8. Figure 8 is an exploded perspective view showing second reflecting member 180 and cover portion 190.

[0080] 6, the support portion 184 supports the annular portion 192 of the cover portion 190. The support portion 184 is annular. The support portion 184 is disposed on the second direction D2 side of the second end portion 182. A portion of the support portion 184 is continuous with the second end portion 182. The support portion 184 is fixed to the annular portion 192 with a screw.

[0081] As shown in FIGS. 3, 6 and 8, the fixed frame 140 has a first elastic member 189 and a second elastic member 185.

[0082] 6 and 8, the first elastic member 189 is disposed between the annular portion 192 and the support portion 184. The first elastic member 189 is annular. The first elastic member 189 fills a part of the gap B between the annular portion 192 and the support portion 184.

[0083] The first elastic member 189 is disposed between the annular portion 192 and the support portion 184. When the annular portion 192 and the support portion 184 are fixed with a screw, the first elastic member 189 is elastically deformed. The elastically deformed first elastic member 189 blocks a part of the gap B between the annular portion 192 and the support portion 184. This makes it possible to prevent water from entering the side of the accommodation portion 170. As a result, it is possible to prevent water from entering the side of the light source portion 110.

[0084] For example, the first elastic member 189 closes the gap B between the annular portion 192 and the support portion 184 that leads to the light source portion 110. In other words, the first elastic member 189 closes the water outlet leading to the light source portion 110. Therefore, even if water enters the gap B between the annular portion 192 and the support portion 184, the water can be prevented from entering the light source portion 110 side.

[0085] The second elastic member 185 is disposed between the second reflecting member 180 and the storage portion 170. The second elastic member 185 is annular. The second elastic member 185 corresponds to an example of an "elastic member." The second elastic member 185 fills a part of the gap C between the second reflecting member 180 and the storage portion 170.

[0086] Specifically, the second elastic member 185 is disposed between the wall portion 171 and the second reflecting member 180. The second elastic member 185 elastically deforms and closes a part of the gap C between the wall portion 171 and the second reflecting member 180. When the second reflecting member 180 is housed in the housing portion 170, the second elastic member 185 elastically deforms between the wall portion 171 and the second reflecting member 180. The elastically deformed second elastic member 185 closes a part of the gap C between the wall portion 171 and the second reflecting member 180. Therefore, it is possible to prevent water that has entered through the gap A from entering the side of the light source unit 110. As a result, it is possible to prevent water from adhering to the light source unit 110.

[0087] In this embodiment, first end 181 does not protrude in second direction D2 like the flange, so gap A is formed between flange 172 and first end 181. For example, when lighting fixture 100 is placed on the ceiling of a bathroom, water may splash toward the ceiling and enter gap A between flange 172 and first end 181. However, as in this embodiment, second elastic member 185 closes part of gap C between wall portion 171 and second reflecting member 180, so water can be prevented from entering the light source unit 110 side.

[0088] 6, the second elastic member 185 is disposed on the third direction D3 side of the protrusion 186A. Therefore, the second elastic member 185 prevents water that has infiltrated beyond the restricting member 186 from infiltrating toward the light source unit 110. As a result, water can be further prevented from infiltrating toward the light source unit 110.

[0089] The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above embodiments, and can be implemented in various aspects without departing from the gist of the present invention. In addition, various inventions can be formed by appropriately combining multiple components disclosed in each of the above embodiments. For example, some components may be deleted from all components shown in the embodiments. Furthermore, components across different embodiments may be appropriately combined. The drawings are mainly shown schematically for ease of understanding, and the thickness, length, number, spacing, etc. of each component shown in the drawings are different from the actual ones due to the convenience of drawing. In addition, the speed, material, shape, dimensions, etc. of each component shown in the above embodiments are examples and are not particularly limited, and various changes are possible within a range that does not substantially deviate from the configuration of the present invention.

[0090] (1) In the embodiment of the present invention, the second elastic member 185 is disposed on the third direction D3 side of the protrusion 186A, but this is not limited thereto. For example, the second elastic member 185 may be disposed on the first direction D1 side of the protrusion 186A. Specifically, the second elastic member 185 may be disposed on the outer circumferential surface OS between the protrusion 186A and the first end 181. In this case, the second elastic member 185 closes a part of the gap A. Therefore, the second elastic member 185 can prevent water from entering the gap C. As a result, it is possible to prevent water from adhering to the light source unit 110.

[0091] (2) In the embodiment of the present invention, second opening 180B of second reflecting member 180 is inclined with respect to first opening 180A, but this is not limited to the above. For example, first opening 180A and second opening 180B may be openings parallel to second direction D2.

[0092] (3) In the embodiment of the present invention, the light source 113 is an LED, but is not limited to this. For example, the light source 113 may be an incandescent light bulb, an organic EL (Electro Luminescence) element, or an LED light bulb.

[0093] (4) This application further discloses the following supplementary notes, which are not intended to limit the present invention.

[0094] [Appendix 1] A light source unit that emits light; A reflecting member that reflects the light; A housing portion that houses the reflecting member; Equipped with the housing portion has a wall portion extending on a side in a first direction in which the light is emitted and a flange portion extending from the wall portion in a second direction, the second direction intersects with the first direction and indicates a direction from the reflecting member toward the wall portion, The reflecting member has a first end on a side in the first direction, A lighting fixture, wherein the first end does not protrude in the second direction.

[0095] [Appendix 2] 2. The lighting device according to claim 1, wherein the reflective member is detachable through an opening on a first direction side of the storage portion.

[0096] [Appendix 3] The lighting device according to claim 1 or 2, wherein the first end is disposed at the same position as the flange portion or at a position closer to the light source portion than the flange portion.

[0097] [Appendix 4] the reflecting member has a second end in a third direction opposite to the first direction; the first end portion is annular and has a first inner edge and a first outer edge located on a side of the first inner edge in the second direction, the second end portion is annular and has a second inner edge and a second outer edge located on a side of the second inner edge in the second direction, 4. The lighting device of claim 1, wherein a first width from the first inner edge to the first outer edge in the second direction is smaller than a second width from the second inner edge to the second outer edge in the second direction, or the first width is equal to the second width.

[0098] [Appendix 5] The reflection member further includes a restricting member that restricts the reflection member from moving toward the third direction, the housing portion includes a biasing portion that holds the reflecting member and biases the reflecting member toward a side in the third direction, 5. The lighting device according to claim 4, wherein the regulating member is disposed on an outer peripheral surface of the reflective member and abuts against the wall portion.

[0099] [Appendix 6] The regulating member is a protrusion that protrudes in the second direction, 6. The lighting device according to claim 5, wherein the wall portion has an abutment portion that abuts against the protrusion.

[0100] [Appendix 7] 7. The lighting device of claim 6, further comprising an elastic member disposed between the wall portion and the reflective member and sealing a portion of the gap between the wall portion and the reflective member.

[0101] [Appendix 8] 8. The lighting device according to claim 7, wherein the elastic member is positioned on a side of the protrusion in the third direction. [Industrial Applicability]

[0102] The present invention provides a lighting fixture and has industrial applicability. [Explanation of symbols]

[0103] 100: Lighting equipment 110: Light source section 170: Storage unit 171: Wall 172: Flange 173: Pressurizing section 178: Contact part 180: Second reflecting member (reflecting member) 180A: 1st opening 180B: 2nd opening 181: First end (end) 181A: First Inner Marriage 181B: First outer edge 182A: Second inner edge 182B: Second outer edge 186: Regulatory components 186A:Protrusion 189: First elastic member (elastic member) A: Gap B: Gap C: Gap D1: 1st direction D2 :Second direction D3: Third direction LD: 1st width LE: 2nd width OS: Outer surface

Claims

1. A light source unit that emits light; A reflecting member that reflects the light; a housing portion that houses and supports the reflecting member; Equipped with The container has a wall portion extending in a first direction in which the light is emitted, and a flange portion extending in a second direction from the wall portion, the second direction intersects with the first direction and indicates a direction from the reflecting member toward the wall portion, The reflecting member has a first end on a side in the first direction, The first end does not protrude in the second direction, The reflecting member is detachable from an opening of the housing part on the first direction side, The reflection member further includes a restricting member that restricts the reflection member from moving toward a third direction opposite to the first direction, the housing portion includes a biasing portion that holds the reflecting member and biases the reflecting member toward the third direction, The regulating member is disposed on an outer peripheral surface of the reflective member and abuts against the wall portion.

2. The lighting device according to claim 1 , wherein the first end portion is disposed at the same position as the flange portion or at a position closer to the light source portion than the flange portion.

3. The regulating member is a protrusion that protrudes in the second direction, The lighting device according to claim 1 , wherein the wall portion has an abutment portion that abuts against the protrusion.

4. A light source unit that emits light; A reflecting member that reflects the light; a housing portion that houses and supports the reflecting member; Equipped with The container has a wall portion extending in a first direction in which the light is emitted, and a flange portion extending in a second direction from the wall portion, the second direction intersects with the first direction and indicates a direction from the reflecting member toward the wall portion, The reflecting member has a first end on a side in the first direction, The first end does not protrude in the second direction, The reflecting member is detachable from an opening of the housing part on the first direction side, The reflection member further includes a restricting member that restricts the reflection member from moving toward a third direction opposite to the first direction, the restricting member protrudes in the second direction to a position on a fourth direction side beyond an outer edge of the first end portion, A lighting device, wherein the fourth direction indicates a direction toward a center of the reflective member.

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