Lighting fixtures

Abstract

To provide a lighting device which can inhibit fall of an attachment member.SOLUTION: A lighting device 100 includes a lamp 1 and an attachment member 3. The lamp 1 emits light. The attachment member 3 comes into contact with a ceiling RF from the rear surface F2 side of a front surface F1 and the rear surface F2 of the ceiling RF to attach the lamp 1 to the ceiling RF. The lamp 1 has a first hole 21 and a second hole 22. The attachment member 3 is attached to the first hole 21. The first hole 21 guides sliding of the attachment member 3 along a first direction D1. The second hole 22 extends along a second direction D2 intersecting with the first direction D1. The second hole 22 is connected to the first hole 21. A length of the second hole 22 in the second direction D2 is longer than a length of the first hole 21 in the second direction D2. The lamp 1 further has a restriction part 23. The restriction part 23 restricts removal of the attachment member 3 from the second hole 22.SELECTED DRAWING: Figure 3

Description

[Technical Field]

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

[0002] The recessed lighting fixture described in Patent Document 1 comprises a fixture main body and a mounting bracket. The fixture main body has a longitudinal slit and an opening for inserting the bracket. The mounting bracket has a substantially U-shaped portion that can be inserted into the opening for inserting the bracket. Further, the mounting bracket has an operating portion abutting against the inner surface of the fixture main body at the end opposite to the U-shaped bent portion of the substantially U-shaped portion. Furthermore, a locking claw, which can be inserted through the opening for inserting the bracket and can be locked to the outer surface of the fixture main body in a state where the U-shaped bent portion is locked to the rear surface of the ceiling, is formed on the side piece of the substantially U-shaped portion of the mounting bracket. [Prior Art Documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Unexamined Patent Publication No. Hei 8-138432 [Summary of the Invention] [Problem to be Solved by the Invention]

[0004] However, in the recessed lighting fixture described in Patent Document 1, after the recessed lighting fixture is installed on the ceiling, it cannot be ruled out that the mounting bracket may fall out of the opening for inserting the bracket depending on the situation. For example, when the recessed lighting fixture is covered by heat insulating material behind the ceiling, it may be necessary to secure a space below the heat insulating material or increase the size of the heat sink for heat dissipation. In this case, the weight and size of the recessed lighting fixture increase. As a result, when strong vibration occurs on the ceiling or the like, the vibration is transmitted to the mounting bracket and the recessed lighting fixture, and it cannot be ruled out that the mounting bracket may fall out of the opening for inserting the bracket. Further, when the recessed lighting fixture is compressed by the weight of the heat insulating material, it cannot be ruled out that the mounting bracket may fall out of the opening for inserting the bracket.

[0005] The present invention has been made in view of the above problems, and its purpose is to provide a lighting fixture that can prevent the mounting member from falling off. [Means for solving the problem]

[0006] The luminaire disclosed herein comprises a luminaire and a mounting member. The luminaire emits light. The mounting member attaches the luminaire to the ceiling by contacting the ceiling from the back side of the ceiling's surface and back side. The luminaire has a first hole and a second hole. The mounting member is fitted into the first hole. The first hole guides the mounting member to slide along a first direction. The second hole extends along a second direction intersecting the first direction. The second hole is connected to the first hole. The length of the second hole in the second direction is longer than the length of the first hole in the second direction. The luminaire further has a restricting portion. The restricting portion restricts the mounting member from detaching from the second hole.

[0007] In the lighting fixture disclosed herein, the restricting portion is preferably located in the second hole.

[0008] In the lighting fixture disclosed herein, the mounting member is preferably elastic.

[0009] In the lighting fixture disclosed herein, it is preferable that the restricting portion is fixed to the luminaire from the one end of the second hole, rather than from both the one end and the other end of the second hole in the second direction. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a lighting fixture that can prevent the mounting member from falling off. [Brief explanation of the drawing]

[0011] [Figure 1] This is a perspective view showing a lighting fixture according to an embodiment of the present invention. [Figure 2] This is a cross-sectional view along line II-II in Figure 1. [Figure 3] This is a perspective view showing the mounting member, restrictor, first hole, and second hole of the lighting fixture according to this embodiment. [Figure 4] This is a perspective view showing the lighting fixture according to this embodiment with the mounting member and restrictor separated from the luminaire. [Figure 5] This figure shows the dimensional relationship between the mounting member of the lighting fixture according to this embodiment and the first and second holes in the wall member. [Modes for carrying out the invention]

[0012] Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and will not be repeated in the description. Also, in the drawings, mutually orthogonal X, Y, and Z axes are shown. As an example, the X and Y axes are approximately parallel in the horizontal direction, and the Z axis is approximately parallel in the vertical direction.

[0013] Figure 1 is a perspective view showing a lighting fixture 100 according to this embodiment. The lighting fixture 100 shown in Figure 1 emits light. The lighting fixture 100 is, for example, a downlight. The downlight is, for example, a downlight suitable for thermal insulation construction (S-type downlight) or a general-purpose downlight (M-type downlight). The lighting fixture 100 comprises a luminaire 1 and a plurality of mounting members 3. The plurality of mounting members 3 are attached to the luminaire 1. In the example of Figure 1, the lighting fixture 100 comprises two mounting members 3. The luminaire 1 emits light. The luminaire 1 has a first frame 5, a first reflective member 7, a second frame 9, and a heat sink 11.

[0014] Figure 2 is a cross-sectional view along the line II-II in Figure 1. As shown in Figure 2, the luminaire 1 is inserted into the hole HL in the ceiling RF and attached to the ceiling RF by a plurality of mounting members 3. Specifically, the plurality of mounting members 3 attach the luminaire 1 to the ceiling RF by contacting the ceiling RF from the back surface F2 side of the ceiling RF's surface F1 and back surface F2. In the example in Figure 2, the plurality of mounting members 3 are in contact with the back surface F2 of the ceiling RF. The material of the mounting members 3 is, for example, metal. In this case, the metal is, for example, steel, stainless steel, copper, or brass.

[0015] The luminaire 1 further comprises a second reflector 13, a cover 15, a disc member 17, and a light source 19.

[0016] The light source 19 emits light. The light source 19 includes one or more light-emitting elements. The light-emitting elements are, for example, light-emitting diodes (LEDs) or organic electroluminescent elements.

[0017] For example, the multiple light-emitting elements constituting the light source 19 may be of COB (Chip on Board) type or SMD (Surface Mount Device) type. In the COB type, multiple LEDs are sealed with phosphor on the mounting surface of the substrate. In the SMD type, the LED and phosphor are combined into a single unit to form an LED chip, and multiple LED chips are mounted on the mounting surface of the substrate and electrically connected to the conductive pattern of the substrate.

[0018] The light source 19 is fixed to the disc member 17. The disc member 17 has a substantially disc shape. The disc member 17 is positioned at the lower end of the heat sink 11. The heat sink 11 dissipates heat through multiple fins, suppressing the temperature rise of the light source 19.

[0019] The second reflecting member 13 reflects light emitted from the light source 19. In order to efficiently reflect the light emitted from the light source 19, at least the inner surface of the second reflecting member 13 is preferably subjected to reflection processing such as white coating, silver coating or glossy metal plating. The material of the second reflecting member 13 may have a color with high light reflectance such as white or silver.

[0020] The inner diameter of the inner surface of the second reflecting member 13 gradually increases from the upper end portion toward the lower end portion of the second reflecting member 13. The second reflecting member 13 has a hollow substantially truncated conical shape. For example, the inner surface of the second reflecting member 13 is formed of a paraboloid, an ellipsoid, or an aspheric surface. The light source 19 is disposed on the upper end side of the second reflecting member 13.

[0021] The cover 15 faces the light source 19 and is disposed on the lower end side of the second reflecting member 13. The cover 15 covers the light source 19. The cover 15 is made of a light-transmissive material. For example, the cover 15 diffuses light. The color of the cover 15 is, for example, white and semi-transparent. In addition to being white and semi-transparent, the cover 15 may be molded from a resin containing a light diffusing material, or may be molded from a transparent material and then subjected to light diffusion treatment on the surface. When the cover 15 covers the light source 19, foreign matter such as dust is less likely to adhere to the light source 19.

[0022] The second frame body 9 has a substantially cylindrical shape. A disk member 17 is disposed at the upper end of the second frame body 9. The cover 15 is disposed at the lower end of the second frame body 9. The second frame body 9 surrounds the disk member 17, the light source 19, the second reflecting member 13, and the cover 15.

[0023] The first reflecting member 7 reflects light emitted from the light source 19. Specifically, the first reflecting member 7 reflects light transmitted through the cover 15 and irradiates the light downward. The inner surface of the first reflecting member 7 may have the same configuration as the inner surface of the second reflecting member 13. The first reflecting member 7 is disposed below the second reflecting member 13. The cover 15 is disposed between the second reflecting member 13 and the first reflecting member 7.

[0024] The inner diameter of the inner surface of the first reflecting member 7 gradually increases from the upper end to the lower end of the first reflecting member 7. The first reflecting member 7 has a hollow, substantially frustoconical shape. For example, the inner surface of the first reflecting member 7 is formed by a parabolic, ellipsoidal, or aspherical surface.

[0025] The first frame 5 is positioned at the bottom of the luminaire 1. The first frame 5 includes a cylindrical portion 5a (Figure 1) and a flange portion 5b. The cylindrical portion 5a has a substantially cylindrical shape. The flange portion 5b has a substantially annular shape. The flange portion 5b protrudes radially outward from the lower end of the cylindrical portion 5a in the radial direction RD. In this embodiment, the radial direction RD indicates the radial direction with respect to the center line AX of the first frame 5. The cylindrical portion 5a is positioned in the hole HL when the luminaire 1 is attached to the ceiling RF. The flange portion 5b abuts against the surface F1 of the ceiling RF when the luminaire 1 is attached to the ceiling RF. The first frame 5 surrounds the lower end of the first reflective member 7.

[0026] Next, the configuration related to the mounting member 3 will be described with reference to Figures 3 and 4. Figure 3 is a perspective view showing the mounting member 3, the restricting part 23, the first hole 21, and the second hole 22. Figure 4 is a perspective view showing the mounting member 3 and the restricting part 23 separated from the luminaire 1.

[0027] As shown in Figures 3 and 4, the luminaire 1 further has a regulating section 23, a first hole 21, and a second hole 22. In the example of Figure 3, the luminaire 1 further has a wall member 24. The wall member 24 is roughly plate-shaped. The material of the wall member 24 is, for example, metal. In this case, the metal is, for example, steel, stainless steel, copper, or brass. The wall member 24 is, for example, sheet metal. In the example of Figure 3, the first hole 21 and the second hole 22 are formed in the wall member 24. That is, the wall member 24 has the first hole 21 and the second hole 22.

[0028] The wall member 24 is fixed to the light fixture body 50 by fixing members 35 such as screws. Specifically, the wall member 24 is fixed to the circumferential surface of the light fixture body 50. The wall member 24 extends from the lower end of the first frame 5 to the lower end of the heat sink 11. The wall member 24 extends along the first direction D1. The first direction D1 is approximately perpendicular to the surface F1 of the ceiling RF (Figure 2). Also, the first direction D1 is approximately parallel to the center line AX (Figure 2).

[0029] The luminaire body 50 includes a first frame 5, a first reflective member 7, a second frame 9, a heat sink 11, a second reflective member 13, a cover 15, a disc member 17, and a light source 19. The luminaire body 50 emits light.

[0030] The mounting member 3 is fitted into the first hole 21. The first hole 21 guides the sliding of the mounting member 3 along the first direction D1. The first hole 21 extends along the first direction D1. The first hole 21 has a substantially rectangular shape. The first hole 21 is an opening.

[0031] The second hole 22 is connected to the first hole 21 at its upper end. The second hole 22 extends along the second direction D2. The second direction D2 intersects the first direction D1. In the example in Figure 3, the second direction D2 is approximately perpendicular to the first direction D1.

[0032] The first hole 21 and the second hole 22 constitute the hole 25. The hole 25 has a roughly T-shape.

[0033] As shown in Figure 3, the restricting portion 23 restricts the detachment of the mounting member 3 from the second hole 22. Therefore, according to this embodiment, the detachment of the mounting member 3 from the luminaire 1 can be suppressed. The material of the restricting portion 23 is, for example, metal or synthetic resin. In this case, the metal is, for example, stainless steel, steel, copper, or brass.

[0034] For example, if the lighting fixture 100 is covered by insulation material placed on the back side F2 of the ceiling RF, it may be necessary to secure space below the insulation material or to increase the size of the heat sink 11 in order to dissipate heat. As a result, the weight and size of the lighting fixture 100 may increase. In this case, with a typical lighting fixture, if strong vibrations occur in the ceiling or the like, it cannot be ruled out that the mounting member may move along the first hole and fall out of the second hole. In contrast, in this embodiment, by providing the restricting part 23, even if the weight and size of the lighting fixture 100 increase and strong vibrations occur in the ceiling RF or the like, causing the mounting member 3 to move along the first hole 21, it is possible to suppress the mounting member 3 from falling out through the second hole 22. Furthermore, for example, even if the lighting fixture 100 is compressed by the weight of the insulation material and the mounting member 3 moves along the first hole 21, it is possible to suppress the mounting member 3 from falling out through the second hole 22.

[0035] In particular, in this embodiment, the restricting portion 23 is positioned in the second hole 22. Therefore, the mounting member 3 can be effectively prevented from falling out through the second hole 22.

[0036] Furthermore, in this embodiment, the restricting portion 23 is elastic. Therefore, the second hole 22 can be easily closed by the restricting portion 23. As a result, the mounting member 3 can be more effectively prevented from falling out through the second hole 22. In addition, because the restricting portion 23 is elastic, even after the wall member 24 to which the restricting portion 23 is attached is fixed to the light fixture body 50 during the assembly of the lighting fixture 100, the restricting portion 23 can be elastically deformed to attach the mounting member 3 to the wall member 24, thus providing greater flexibility in the assembly procedure.

[0037] Furthermore, in this embodiment, the restricting portion 23 is fixed to the luminaire 1 at one end of the second hole 22 in the second direction D2, rather than at both ends of the second hole 22 in the second direction D2. Therefore, the number of parts and assembly steps of the lighting fixture 100 can be reduced. In the example shown in Figure 3, the restricting portion 23 is fixed to the wall member 24 at one end of the second hole 22.

[0038] In detail, the restricting portion 23 has a fixing portion 231 and a restricting body portion 232. The fixing portion 231 is substantially flat. The fixing portion 231 is fixed to the wall member 24 at one end of the second hole 22 by fixing members 27 such as screws and crimping pins.

[0039] The restrictor body 232 extends from the fixing portion 231 along the second direction D2. The restrictor body 232 is bent relative to the fixing portion 231 toward the second hole 22. Preferably, the restrictor body 232 is elastic. In this case, the restrictor body 232 is, for example, a leaf spring. The restrictor body 232 is positioned in the second hole 22, and the restrictor body 232 closes the second hole 22. Thus, the mounting member 3 can be more effectively prevented from falling out through the second hole 22.

[0040] For example, in the restricting section 23, the fixing section 231 is fixed to the front side of the wall member 24, and the tip of the restricting main body section 232 (the side opposite to the fixing section 231) is inserted into the second hole 22 and positioned on the back side of the wall member 24. As a result, the work of fixing the restricting main body section 232 to the wall member 24 with fixing members such as screws can be omitted.

[0041] Next, the mounting member 3 will be described in detail with reference to Figures 2 to 4. As shown in Figures 2 and 3, when the mounting member 3 is attached to the light fixture 1, the mounting member 3 protrudes from the first hole 21. Specifically, the mounting member 3 protrudes from the first hole 21 diagonally downward relative to the wall member 24.

[0042] As shown in Figure 4, the mounting member 3 has a claw portion 31 and an operating portion 32. The tip of the claw portion 31 is pointed at a nearly acute angle. Note that "pointed" here refers not only to being sharply pointed, but also to being chamfered. The operating portion 32 is connected to the base end of the claw portion 31. As shown in Figure 2, the operating portion 32 is rotatable around the shaft 33. That is, the operating portion 32 can be manually rotated between the unlocked state shown by the dashed line and the locked state shown by the solid line.

[0043] As shown in Figure 4, when assembling the lighting fixture 100, the operating part 32 of the mounting member 3 is left unlocked and inserted into the second hole 22. Then, the mounting member 3 is moved from the second hole 22 to the first hole 21. Furthermore, when the operating part 32 is locked, the restricting part 23 is fixed to the wall member 24, and the restricting part 23 is mounted into the first hole 21.

[0044] Furthermore, the claw portion 31 of the mounting member 3 has a claw body 311 and a pair of contact portions 312. The tip of the claw body 311 is pointed at a nearly acute angle. The pair of contact portions 312 protrude outward from the upper edge of the claw body 311 relative to the claw body 311. The upper edge of the claw body 311 extends diagonally downward from the base end side of the claw body 311. The contact portions 312 are elastic. For example, the contact portions 312 are leaf springs.

[0045] As shown in Figure 2, with the light fixture 1 inserted into the hole HL in the ceiling RF, the operating part 32 of the mounting member 3 is locked (solid line). Therefore, the position of the mounting member 3 in the first direction D1 is fixed in the first hole 21. The tip of the claw body 311 is in contact with the back surface F2 of the ceiling RF. In this case, due to the weight of the light fixture 1, the tip of the claw body 311 presses down on the back surface F2. In addition, the contact part 312 of the claw part 31 is in contact with the outer surface of the wall member 24 (Figure 1). In this case, due to the weight of the light fixture 1, the contact part 312 presses against the wall member 24 elastically. As a result, the light fixture 1 can be attached to the ceiling RF by the mounting member 3.

[0046] Furthermore, by changing the operating part 32 of the mounting member 3 from the locked state (solid line) to the unlocked state (dash-dot line), the mounting member 3 can be slid in the first direction D1 through the first hole 21. Therefore, for example, when removing the light fixture 1 from the ceiling RF, or when adjusting the mounting state of the light fixture 1, the operating part 32 should be set to the unlocked state.

[0047] Furthermore, when the mounting member 3 is attached to the wall member 24 (first hole 21), the claw portion 31 protrudes radially outward RD from the first hole 21 of the wall member 24. On the other hand, when the mounting member 3 is attached to the wall member 24 (first hole 21), the operating portion 32 is located radially inward RD of the wall member 24. In other words, in this case, the operating portion 32 is located between the wall member 24 and the light fixture body 50. Also, in this case, the operating portion 32 is in contact with the inner surface of the wall member 24.

[0048] Figure 5 shows the dimensional relationship between the mounting member 3 and the first hole 21 and second hole 22 of the wall member 24. In Figure 5, the first hole 21 and second hole 22 are viewed from direction D in Figure 2. Also, the regulating part 23 is viewed from direction D with the regulating part 23 separated from the light fixture 1. Furthermore, the state in which the claw part 31 and the operating part 32 of the regulating part 23 are separated is shown.

[0049] As shown in Figure 5, the length L21 of the second hole 22 in the second direction D2 is longer than the length L11 of the first hole 21 in the second direction D2. The length L22 of the second hole 22 in the first direction D1 is shorter than the length L12 of the first hole 21 in the first direction D1.

[0050] The length L3 of the operating section 32 in the second direction D2 is longer than the length L11 of the first hole 21 in the second direction D2. Therefore, when the mounting member 3 is attached to the wall member 24 (first hole 21), it is possible to prevent the mounting member 3 from detaching through the first hole 21.

[0051] The length L3 of the operating part 32 in the second direction D2 is approximately equal to the length L21 of the second hole 22 in the second direction D2. However, the length L3 of the operating part 32 may be shorter than the length L21 of the second hole 22, as long as it is longer than the length L11. Also, the length L3 of the operating part 32 may be longer than the length L21 of the second hole 22, as long as the operating part 32 can be inserted into the second hole 22 and the mounting member 3 can be attached to the first hole 21.

[0052] The length L5 of the claw body 311 in the second direction D2 is less than or approximately equal to the length L11 of the first hole 21 in the second direction D2. Therefore, the mounting member 3 can slide along the first direction D1 through the first hole 21.

[0053] The length L4 of the pair of contact portions 312 in the second direction D2 is greater than the length L11 of the first hole 21 in the second direction D2. Therefore, the pair of contact portions 312 can contact the outer surface of the wall member 24. Note that the length L4 of the pair of contact portions 312 refers to the length from the end of one contact portion 312 in the second direction D2 to the end of the other contact portion 312 in the second direction D2.

[0054] Embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the embodiments described above, and can be implemented in various forms without departing from its spirit. Furthermore, the multiple components disclosed in the above embodiments can be modified as appropriate. For example, some components from all the components shown in one embodiment may be added to the components of another embodiment, or some components from all the components shown in one embodiment may be deleted from the embodiment.

[0055] Furthermore, the drawings schematically show each component in order to facilitate understanding of the invention, and the thickness, length, number, spacing, etc. of each component shown may differ from the actual dimensions due to the convenience of drawing creation. Also, the configuration of each component shown in the above embodiments is merely an example and is not particularly limiting, and it goes without saying that various modifications are possible without substantially departing from the effects of the present invention.

[0056] (1) As shown in Figure 3, the restricting portion 23 and the wall member 24 were separate parts. However, the restricting portion 23 and the wall member 24 may be made of a single component. In other words, the restricting portion 23 and the wall member 24 may be a single molded product.

[0057] (2) As shown in Figure 3, the first hole 21 and the second hole 22 were formed in the wall member 24. However, as long as the first hole 21 and the second hole 22 are formed in the light fixture 1, the member forming the first hole 21 and the second hole 22 is not particularly limited. For example, the member for forming the first hole 21 and the second hole 22 may be a dedicated member or may be shared with a member having another function.

[0058] (3) As shown in Figure 3, the restricting portion 23 blocked the second hole 22. However, the position of the restricting portion 23 is not particularly limited as long as it restricts the detachment of the mounting member 3 from the second hole 22. For example, the restricting portion 23 may be located radially outward RD from the second hole 22. For example, the restricting portion 23 may be positioned radially RD opposite to the first hole 21. Even in this case, for example, if the restricting portion 23 is elastic, the mounting member 3 can be moved from the second hole 22 to the first hole 21 by deforming the restricting portion 23. In addition, although the restricting portion 23 was fixed to the wall member 24, the member to which the restricting portion 23 is fixed is not particularly limited as long as it is fixed to the light fixture 1.

[0059] (4) In Figure 3, the restricting portion 23 may be rotatably attached to the wall member 24 with screws or the like. Specifically, the restricting portion 23 may be configured to be rotatable between a position in which it opens the second hole 22 and a position in which it closes the second hole 22. In this case, the mounting member 3 can be inserted into the second hole 22 when the restricting portion 23 is in the open position of the second hole 22. After the mounting member 3 is inserted into the second hole 22, the restricting portion 23 closes the second hole 22 to prevent the mounting member 3 from falling out. [Industrial applicability]

[0060] This invention relates to lighting fixtures and has industrial applicability. [Explanation of symbols]

[0061] 1 lamp 3. Mounting components 21 Hole 1 22 2nd hole 23 Regulatory Department 100 lighting fixtures

Claims

1. A light-emitting fixture, A mounting member for attaching the light fixture to the ceiling by contacting the ceiling from the back side of the ceiling surface and the back side. Equipped with, The aforementioned light fixture is The mounting member is attached to a first hole that guides the mounting member to slide along a first direction, A second hole extending along a second direction intersecting the first direction and connected to the first hole It has, The length of the second hole in the second direction is longer than the length of the first hole in the second direction. The lamp further includes a restricting portion that restricts the detachment of the mounting member from the second hole, The regulating portion is positioned in the second hole and fixed to the luminaire from the one end of the second hole, rather than from both the one end and the other end of the second hole in the second direction, in a lighting fixture.

2. The lighting fixture according to claim 1, wherein the mounting member is elastic.

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