JP7194924B2 - lighting equipment - Google Patents

Description

The present disclosure relates to lighting devices.

2. Description of the Related Art Conventionally, there is one described in Patent Document 1 as a lighting device. This lighting device includes a frame, a light source, a reflecting member, and a translucent member. The frame serves as a housing and has a substantially cylindrical shape. Moreover, the reflecting member is fixed by being fitted into the frame, and reflects the light emitted from the light source section toward the translucent member. Further, the translucent member transmits light from the light source and diffuses highly directional light from the light source. The translucent member has a protrusion on its edge, and this protrusion is engaged with a recess provided in the reflective member. This engagement secures the translucent member to the reflective member and prevents the translucent member from falling downward during use of the lighting device.

Japanese Patent Application Laid-Open No. 2015-176817 (Fig. 4B)

In the lighting device described above, since the projecting portion of the translucent member is engaged with the concave portion of the reflecting member fixed to the frame, the translucent member can be prevented from falling downward. However, even if the function of locking the light-transmitting member to the reflecting member is lost due to some problem, it is preferable to prevent the light-transmitting member from falling because it is possible to ensure safety.

Therefore, the lighting device of the present disclosure is to provide a lighting device that can more reliably prevent the light-transmitting member from falling.

In order to solve the above problems, the lighting device of the present disclosure includes a light source, a light-transmitting member having a protrusion, and a reflecting member that reflects light from the light source toward the light-transmitting member and to which the light-transmitting member is fixed. and an auxiliary reflecting member that reflects light emitted from the translucent member and has a locking portion for locking the projection.

According to the lighting device according to the present disclosure, it is possible to more reliably prevent the translucent member from falling.

1 is a perspective view of a lighting device according to an embodiment of the present disclosure; FIG. It is sectional drawing of the said illuminating device. It is a perspective view when the reflecting member of the said illuminating device is seen from an upper side. It is a perspective view when the auxiliary reflecting member of the said lighting device is seen from an upper side. It is a perspective view when the translucent member of the said illuminating device is seen from an upper side. FIG. 3 is a simplified cross-sectional view of the lighting device cut along a cross-sectional plane including the height direction and the radial direction, which is different from that in FIG. 2 ; 3 is an enlarged cross-sectional view of the vicinity of a region K in FIG. 2 in the lighting device; FIG. FIG. 7 is a simplified cross-sectional view corresponding to FIG. 6 in a modified lighting device; FIG. 11 is a simplified cross-sectional view of part of a lighting device of another modified example; FIG. 11 is a simplified cross-sectional view of part of a lighting device of a further modified example;

Embodiments according to the present disclosure will be described in detail below with reference to the accompanying drawings. In addition, when a plurality of embodiments and modifications are included in the following, it is assumed from the beginning that the characteristic portions thereof will be appropriately combined to construct a new embodiment. Further, in the following description and drawings, the R direction is the radial direction of the through holes of the reflecting member described below, and the θ direction is the circumferential direction of the through holes. The R direction coincides with the radial direction of the cup-shaped portion of the auxiliary reflecting member described below, and the θ direction coincides with the circumferential direction of the cup-shaped portion. Also, the Z direction indicates the height direction of the illumination device 1 . The R direction, θ direction, and Z direction are orthogonal to each other. In the following description, the case where the Z direction coincides with the optical axis direction of the light emitted from the light source 20 of the illumination device 1 will be described. However, the Z direction does not have to match the direction of the optical axis emitted from the light source of the illumination device. Further, in the following description, when terms related to the vertical direction and the horizontal direction, such as lower, upper, and horizontal, are used, these terms mean that the emitted light from the illumination device 1 is directed downward in the vertical direction. It is represented in a state in which it is illuminated and the optical axis of the emitted light is aligned in the vertical direction. In this embodiment, the Z direction coincides with the vertical direction.

FIG. 1 is a perspective view of a lighting device 1 according to an embodiment of the present disclosure, and FIG. 2 is a cross-sectional view of the lighting device 1. FIG. The illumination device 1 is a recessed downlight, which is embedded in the ceiling of a building such as a hall, and illuminates the downward direction. As shown in FIG. 1 , the lighting device 1 includes a base 10 , a frame 60 and a mounting portion 70 . The base 10 is an outer shell member of the illumination device 1, has a substantially cylindrical shape with a bottom, and functions as a mount for mounting the light source 20 (see FIG. 2) inside. The base 10 also functions as a heat sink to dissipate heat from the light source to the outside air. Therefore, it is preferable that the base 10 is made of a material with high thermal conductivity such as a metal material.

The frame 60 is a substantially cylindrical member, and the light from the light source 20 is emitted to the outside of the illumination device 1 through the inside of the frame 60 . The outer diameter of the frame 60 is approximately the same as the outer diameter of the base 10 . The frame 60 is preferably made of a metal material such as aluminum or a resin material such as polybutylene terephthalate. The frame 60 has a flange portion 63 (see FIG. 2) that protrudes inward in the Rθ plane at the end on the side of the light source 20 (upper side) in the Z direction. The screws 81 are screwed into the base 10 and the flange portion 63 from above to fix the frame 60 to the base 10 .

The mounting portion 70 has two mounting springs 71 . For example, the two mounting springs 71 are arranged outside the frame 60 so as to face each other across the central axis of the frame 60 in the radial direction of the frame 60 (corresponding to the R direction). It is attached to the outer peripheral surface of the frame 60 . Each mounting spring 71 extends in a direction substantially perpendicular to the Z direction before being fixed to the embedded hole in the ceiling. The mounting spring 71 is made of, for example, an elongated metal plate and has a plate spring structure.

The lighting device 1 is fixed to the ceiling by abutting the mounting spring 71 around the embedding hole. Note that three or more mounting springs 71 may be provided. Further, the structure of the mounting portion is not limited to the structure shown in FIG. 1, and any structure may be used as long as the lighting main body, which is the portion of the lighting apparatus excluding the mounting portion, can be fixed to the ceiling.

As shown in FIG. 2 , the lighting device 1 further includes a light source 20 , a reflecting member 30 and a translucent member 50 . As will be described later, the reflecting member 30 is positioned with respect to the illumination device 1 by attaching the frame 60 to the base 10 with the screws 81 . In this state, the bottom surface (principal surface) 11 of the base 10, the reflecting member 30, and the like define a light source housing chamber 41 (see FIG. 3) that houses the light source 20. As shown in FIG. In this state, the light source 20 cannot move relative to the lighting device 1 while being housed in the light source housing chamber 41 .

The light source 20 emits light that becomes the illumination light of the illumination device 1 . The light source 20 has a substrate 21 and a light emitting section 22 . The light source 20 has a COB (ChipOnBoard) structure, and the light emitting portion 22 includes a plurality of LEDs (light emitting diodes) mounted on a substrate 21 and a sealing member that seals the plurality of LEDs. The substrate 21 is composed of, for example, a ceramic substrate, a resin substrate, a metal base substrate, or the like. Although not described in detail, the substrate 21 is formed with a pair of electrode terminals and a predetermined pattern of metal wiring. A pair of electrode terminals is provided for externally receiving DC power for causing the LED to emit light. Moreover, the metal wiring of a predetermined pattern is provided for electrically connecting the LEDs.

The LED is composed of, for example, a bare chip that emits monochromatic visible light, and is composed of a blue LED chip that emits blue light when energized. A plurality of LEDs are arranged in a matrix on the substrate 21, for example. Note that only one LED may be mounted on the substrate. The sealing member is made of, for example, translucent resin, and contains a phosphor as a wavelength conversion material that converts the wavelength of light from the LED. The sealing member is made of, for example, phosphor-containing resin in which phosphor particles are dispersed in silicone resin. In the case where the light source 20 emits white light and the LED is a blue LED chip that emits blue light, the phosphor particles are composed of, for example, a YAG-based yellow phosphor. The sealing member may, for example, collectively seal all the LEDs, may seal a plurality of LEDs in a line for each row, or may individually seal each LED. .

As shown in FIG. 2, the reflecting member 30 has a through hole 31, and the inner peripheral surface of the through hole 31 has a plurality of conical inner peripheral surfaces 32, 33, 32, 33, 33, 33, 33, 33, 33, 33, 33, 34, 33, 33, 33, 33, 33, 33, 33, 33, 32, 33, 33, 33, 33, 34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 34, 33, 33, 33, 33, 33, 33, 34, 33, 33, 33, 3. 34. The lower end portion 37 of the reflecting member 30 faces the upper surface of the translucent member 50 with no gap or a slight gap in the Z direction with the upper surface. Light emitted from the light source 20 passes through the through hole 31 . The inner peripheral surface of through hole 31 reflects light from light source 20 toward translucent member 50 . The reflecting member 30 controls the light distribution of the light from the light source 20 by reflecting the light emitted from the light source 20 on its inner peripheral surface. The reflecting member 30 is made of, for example, a white resin material. Polybutylene terephthalate or the like can be suitably used as the resin material forming the reflecting member 30 . The reflecting member 30 may be made of a metal material such as aluminum, or may be formed by forming a metal film such as aluminum on the inner surface of a resin molded product.

FIG. 3 is a perspective view of the reflecting member 30 viewed from above. As shown in FIG. 3, the reflecting member 30 defines a part of a rectangular parallelepiped light source housing chamber 41 that is substantially square in plan view and houses the light source 20 (see FIG. 2) on the upper side. Although not described in detail, in this embodiment, the reflecting member 30 has a concave portion 44 on the upper side, and a member (not shown) is inserted and fixed into the concave portion 44 . The member and part of the reflecting member 30 define a light source housing chamber 41 . The through-hole 31 of the reflecting member 30 has a circular upper opening 43 . The upper opening 43 is positioned substantially in the center of the lower plate portion of the light source housing chamber 41 and opens into the light source housing chamber 41 . In plan view, the substrate 21 of the light source 20 has substantially the same shape and size as the light source housing chamber 41 and is housed in the light source housing chamber 41 without gaps. In this accommodated state, the substrate 21 of the light source 20 is held by the side wall portion 45 of the light source accommodation chamber 41 and cannot move relative to the reflecting member 30 in the horizontal direction.

A flat portion 46 is provided on the lower side of the light source housing chamber 41 so as to surround the upper opening 43 in parallel with the Rθ direction. The light-emitting portion 22 (see FIG. 2) has a disk shape and is arranged substantially in the center of the lower surface 24 (see FIG. 2) of the substrate 21 which is substantially square in plan view. As shown in FIG. 2 , a portion of the lower surface 24 of the substrate 21 abuts substantially the entire plane portion 46 , and the disk-shaped light emitting portion 22 is accommodated in the upper area portion of the through hole 31 .

As shown in FIG. 3, the reflective member 30 has two recesses 48 shaped to correspond to approximately half of the shank of the screw 81 (see FIG. 1). The two recesses 48 face each other in the R direction with the upper opening 43 interposed therebetween. Each concave portion 48 is open on the outside in the R direction and penetrates the reflecting member 30 in the Z direction. When the base 10 is fixed to the frame 60 with the two screws 81 , the screws 81 are screwed into the flange portion 63 of the frame 60 with their shafts passing through the recess 48 . contacts the shank of the screw 81 . As a result, when the base 10 is fixed to the frame 60 with the two screws 81 , the reflecting member 30 is integrally fixed to the base 10 and the frame 60 . As shown in FIG. 2 , in this state, the upper side surface of the substrate 21 of the light source 20 contacts the main surface 11 forming the bottom surface of the base 10 . Therefore, the Z-direction position of the light source 20 is positioned.

Referring to FIG. 2 , light-transmitting member 50 is a light-transmitting member that transmits light from reflecting member 40 . The translucent member 50 is arranged to cover the lower opening of the reflective member 30 and, as a result, to cover the lower side of the light source 20 to protect the light source 20 . The translucent member 50 may have a light distribution control function of controlling the light distribution of the light from the reflecting member 30 . In this embodiment, the translucent member 50 is a Fresnel lens and has a lens function. Moreover, a plurality of irregularities are formed on the surface of the light-transmitting member 50 on the light emitting side, and the light-transmitting member 50 also has a light diffusing function. The translucent member 50 is made of a translucent material having translucency. The translucent member 50 is preferably made of a transparent resin material such as acrylic or polycarbonate, or a glass material. The translucent member 50 is fixed to the reflective member 30 and the frame 60 . The mounting structure of the translucent member 50 will be described later in detail.

As shown in FIG. 2 , the frame body 60 includes a frame body 61 and an auxiliary reflecting member 62 , and the frame body 61 is attached to the base 10 . The frame main body 61 is a substantially cylindrical frame. The outer diameter of the frame main body 61 is approximately the same as the outer diameter of the base 10 . The frame main body 61 is made of, for example, a metal material such as aluminum or a resin material such as polybutylene terephthalate. The auxiliary reflecting member 62 is arranged inside the frame main body 61 . The auxiliary reflecting member 62 is an annular frame made of, for example, a thin metal plate such as aluminum, and has a cup-shaped portion 64 whose inner diameter gradually increases downward. As shown in FIG. 2 , substantially all of the cup-shaped portion 64 is arranged below the translucent member 50 . The cup-shaped portion 64 reflects the light emitted from the translucent member 50 and guides the light to the irradiation area.

FIG. 4 is a perspective view of the auxiliary reflecting member 62 viewed from above. As shown in FIG. 4, the auxiliary reflecting member 62 has a body portion 67 including a cup-shaped portion 64, and a plurality of projections 68 having a substantially L-shaped cross section. , including a radial extension 68b. A plurality of protrusions 68 are spaced apart in the circumferential direction of the cup-shaped portion. The height direction extension portion 68a extends in the Z direction from the upper end portion of the main body portion 67, and the radial direction extension portion 68b extends outward in the R direction from the upper end portion of the height direction extension portion 68a. Extend.

Although not shown, the flange portion 63 of the frame main body 61 has recesses that are open on both sides in the Z direction and also open on the inner side in the R direction at positions overlapping the height direction extending portions 68a when viewed in the Z direction. This concave portion has a shape corresponding to the cross section of the height direction extending portion 68ab on the Rθ plane in plan view. The height-direction extending portion 68a passes through this recess, and the distal end side of the radial-direction extending portion 68b overlaps the flange portion 63 when viewed in the Z direction. The auxiliary reflecting member 62 is locked to the frame main body 61 by bringing the distal end side of the radially extending portion 68 b into contact with the flange portion 63 . When the base 10, the frame main body 61, and the reflecting member 30 are integrally fixed with screws 81 (see FIG. 1), the lower side of the reflecting member 30 and the upper surface of the flange portion 63 of the frame main body 61 extend radially. It defines a through-hole of cross-section corresponding to the cross-section perpendicular to the direction of extension of the portion 68b, the through-hole extending in the radial direction. By accommodating the radially extending portion 68b in the through hole, the auxiliary reflecting member 62 is fixed to the reflecting member 30 and the frame main body 61 in a state in which they cannot move relative to each other. The number of projections provided on the auxiliary reflecting member 62 may be the same as or less than the number of through holes defined by the reflecting member 30 and the frame main body 61 .

Next, a fixing structure for the translucent member 50 will be described. FIG. 5 is a perspective view of the translucent member 50 viewed from above. As shown in FIG. 5 , the translucent member 50 has a substantially circular edge and includes a plurality of first protrusions 57 and a plurality of second protrusions 58 . The plurality of first protrusions 57 and the plurality of second protrusions 58 are arranged at intervals in the θ direction, and the first protrusions 57 and the second protrusions 58 are provided at different positions in the θ direction. . The first protrusion 57 has a curved L-shape in a cross section including the R direction and the Z direction, and protrudes from the edge 56 of the translucent member 50 . The first projecting portion 57 includes a height direction extending portion 57a and a radial direction extending portion 57b. The height direction extending portion 57a extends upward in the Z direction from the edge portion 56, and the radial direction extending portion 57b extends outward in the R direction from the upper end portion of the height direction extending portion 57a in the Rθ plane. extend to On the other hand, the second protrusion 58 extends outward in the R direction from the edge 56 of the translucent member 50 .

Referring to FIG. 3 again, the reflecting member 30 has a plurality of locking portions 47, and the plurality of locking portions 47 are arranged at regular intervals in the θ direction. Each engaging portion 47 includes a pair of engaging claws 42, 42 facing each other in the θ direction, and the claw portions 42a face each other in the θ direction. 3 and 5, the θ direction positions of the plurality of locking portions 47 of the reflecting member 30 match the θ direction positions of the plurality of first protrusions 57 of the translucent member 50 .

Again referring to FIG. 2 , the first protrusion 57 passes under the lower end 37 of the reflecting member 30 , and then enters between the pair of locking claws 42 , 42 at its tip side. The lower side receives the force of the upper side by the claw portion 42a. Also, the width in the θ direction of the distal end side of the first protrusion 57 substantially matches the width in the θ direction of the pair of locking claws 42 , 42 . As a result, the translucent member 50 is fixed to the reflecting member 30 and fixed to the reflecting member 30 with a snap-fit structure. Therefore, the translucent member 50 is fixed to the base 10 and the frame main body 61 via the reflecting member 30 .

The translucent member 50 is also locked to the auxiliary reflecting member 62 . Specifically, as shown in FIG. 4, the auxiliary reflecting member 62 has a plurality of recesses 69, and the plurality of recesses 69 are arranged at intervals in the .theta. direction. The concave portion 69 is an example of a locking portion. The concave portion 69 is open on the side of the light source 20 in the Z direction (upper side) and penetrates the auxiliary reflecting member 62 in the thickness direction. 4 and 5, the θ direction positions of the plurality of concave portions 69 of the auxiliary reflecting member 62 match the θ direction positions of the plurality of second protrusions 58 of the translucent member 50 . The second protrusion 58 is inserted into the recess 69 from above and arranged between the pair of recess side surfaces 69b. FIG. 6 is a simplified cross-sectional view of the illumination device 1 cut along a cross-sectional plane including the Z direction and the R direction, which is different from that shown in FIG. As shown in FIG. 6, the second protrusion 58 is locked to the bottom 69a of the recess 69 on the lower side in the Z direction. As a result, the translucent member 50 is locked to the auxiliary reflecting member 62 fixed to the frame main body 61 and the reflecting member 30 .

FIG. 7 is an enlarged cross-sectional view of the area around K in FIG. As shown in FIG. 7, the light-transmitting member 50 has an annular groove 54 that opens only on the upper side outward in the R direction. The reflecting member 30 also has an annular protruding portion 39 that protrudes downward from an end surface 38 on the opposite side (lower side) of the light source 20 in the Z direction. The annular protrusion 39 is received within the annular groove 54 . The reason for providing this structure will be explained below. Also, although not described in detail, the illumination device 1 has a conductive connector section around the light source 20 . The connector portion is a conductive connection terminal (contact terminal) that is electrically connected to the power line, and is composed of, for example, a terminal plate made of metal. The connector section includes board-side terminals and external-side ends electrically connected to the terminals. Power is supplied to the light source 20 by electrically connecting the board-side terminals to the electrode terminals.

As described above, the illumination device 1 includes the light source 20, the light-transmitting member 50 having the second protrusion 58, and the reflecting member that reflects the light from the light source 20 toward the light-transmitting member 50 and to which the light-transmitting member 50 is fixed. 30. The illumination device 1 also includes an auxiliary reflecting member 62 that reflects the light emitted from the translucent member 50 to the reflecting member 30 and has a concave portion (locking portion) 69 in which the second protrusion 58 is locked.

Therefore, the light-transmitting member 50 is doubly fixed to the reflecting member 30 and the auxiliary reflecting member 62, and the downward fall of the light-transmitting member 50 can be doubly prevented by two different fall prevention mechanisms. Therefore, even if the function of fixing the light-transmitting member 50 to the reflecting member 30 is lost due to some problem, the locking by the auxiliary reflecting member 62 can prevent the light-transmitting member 50 from falling. Conversely, even if the function of locking the light-transmitting member 50 to the auxiliary reflecting member 62 is lost due to some problem, the light-transmitting member 50 can be prevented from falling by fixing it with the reflecting member 30 . As a result, it is possible to reliably prevent the transparent member 50 from falling, and to ensure safety.

Also, the locking portion may include a recessed portion 69 provided in the auxiliary reflecting member 62 . Further, the concave portion 69 may be open on the side of the light source 20 in the height direction of the auxiliary reflecting member 62 and may penetrate through the auxiliary reflecting member 62 in the thickness direction. Also, the second protrusion 58 of the translucent member 50 may be locked to the bottom of the recess 69 .

According to the above configuration, it is possible to easily and inexpensively realize a structure in which the auxiliary reflecting member 62 prevents the transparent member 50 from falling.

Further, as shown in FIG. 7, the reflecting member 30 may have an annular projecting portion 39 projecting from an end surface 38 of the reflecting member 30 on the side opposite to the light source 20 side in the height direction.

The reflecting member 30 is made of a white resin or the like having a high property of reflecting light. Therefore, the light indicated by the arrow A in FIG. 7 , that is, the light traveling obliquely upward from below and colliding with the projecting portion 39 can be reflected by the projecting portion 39 . On the other hand, if the projecting portion 39 were not present, the light would reach the outer portion of the reflecting member 30 in the R direction (in this embodiment, the upper portion that does not contribute to the reflection of the auxiliary reflecting member 62), may be absorbed by the skin and appear dark. According to this embodiment, the light indicated by the arrow A in FIG. 7 can be reflected by the protrusion 39 . Therefore, when viewed from below, there is no risk that the relevant portion will appear darkened, and the appearance of the lighting device 1 can be improved.

The present disclosure is not limited to the above embodiments and modifications thereof, and various improvements and modifications are possible within the scope of the claims of the present application and their equivalents. Some of these improvements and modifications are described below. Although the description is omitted, lighting devices 101, 201, and 301 of modified examples shown in FIGS. It is embedded in the ceiling of a building such as a hall and illuminates the lower part. Further, in the illumination devices 101, 201, and 301 of the modified examples shown in FIGS. 8, 9, and 10, the same reference numerals are given to the same configurations as in the above-described embodiment, and the description thereof will be omitted.

In the above embodiment, the case where the locking portion is the concave portion 69 provided in the auxiliary reflecting member 62 and the concave portion 69 penetrates the auxiliary reflecting member 62 in the thickness direction has been described. However, as shown in FIG. 8, that is, a simplified cross-sectional view corresponding to FIG. good too. The groove 169 extends in the height direction of the auxiliary reflecting member 162 and may be open on the side of the light source 20 in the height direction (upper side). The side opposite to the side (underside) may be blocked. Then, both sides of the second projection 58 of the translucent member 50 in the .theta.

Further, as shown in FIG. 9, that is, a simplified cross-sectional view of a part of a lighting device 201 of another modified example, an auxiliary reflecting member 262 having an annular structure is positioned inside the auxiliary reflecting member 262 in the radial direction (R direction). It may have a curved portion 269 that curves inward. The lower end portion of the second projecting portion 58 may be configured to be locked to the upper portion of the curved portion 269 , and the curved portion 269 may be the locking portion. In this case, if the curved portion 269 is annular, it is preferable because the appearance is improved.

Further, as shown in FIG. 10, that is, a simplified cross-sectional view of a part of a lighting device 301 of a further modified example, an auxiliary reflecting member 362 having an annular structure extends radially (R direction) may have one or more protrusions 369 that protrude inward. The lower end of the second protrusion 58 may be configured to be locked to the upper surface of one or more protrusions 369 , and the one or more protrusions 369 may be the locking portion. In addition, when the auxiliary reflecting member 362 has a plurality of projecting portions 369, the plurality of projecting portions 369 are arranged at intervals in the circumferential direction (θ direction) of the auxiliary reflecting member 362. FIG.

In the lighting devices 101, 201, and 301 of the modified examples shown in FIGS. 8 to 10, as in the above-described embodiment, a structure for preventing the light-transmitting member 50 from falling by the auxiliary reflecting members 162, 262, and 362 is realized simply and inexpensively. It's possible and desirable.

Also, although the case where the auxiliary reflecting member 62 has a plurality of locking portions (recesses 69) has been described, the auxiliary reflecting member may have only one locking portion that does not have an annular structure.

Also, the case where the first projecting portion 57 of the translucent member 50 is fixed to the pair of locking claws 42, 42 of the reflecting member 30 with a snap-fit structure has been described. However, the first projecting portion of the translucent member may be fixed to the reflecting member by fixing means other than the nap-fit structure, such as screwing.

Further, in the lighting device, the structure for fixing at least one of the reflecting member, the auxiliary reflecting member, and the light source to the lighting device is not limited to the above-described method, and any known structure may be used. For example, the reflective member may be secured to the base with screws. Also, the auxiliary reflecting member may have a structure integrated with the frame. Further, a holding member for attaching the light source to the base may be provided, the reflecting member may be fixed to the holding member, and the holding member may be attached to the base by means of attachment means such as screws.

Further, the auxiliary reflecting member may have two or more different locking portions as described above, and the translucent member has two or more projections locked to the two or more locking portions. may For example, the auxiliary reflecting member may have both the recesses 69 described above and the protrusions 369 described with reference to FIG.

Moreover, although the case where the illumination device 1 is an embedded light has been described, the illumination device may be suspended from a rail or suspended from a ceiling. In short, the lighting device includes a light-transmitting member having a protrusion, a reflecting member that reflects light from a light source toward the light-transmitting member and to which the light-transmitting member is fixed, and a reflecting member that reflects light emitted from the light-transmitting member. However, any type of lighting device may be used as long as it has an auxiliary reflecting member having a locking portion for locking the projection.

Reference Signs List 1,101,201,301 lighting device 30 reflecting member 38 end surface of the reflecting member opposite to the light source side in the height direction 39 annular protrusion 50 translucent member 62,162,262,362 auxiliary Reflecting member 69 Recessed portion 69a Bottom of recessed portion 169 Groove 170 Blocking portion 269 Curved portion 369 Protruding portion R direction Radial direction of through hole of reflecting member θ direction Circumferential direction of through hole of reflecting member Z direction is the height direction of the lighting device.

Claims (6)

a light source;
a translucent member having a protrusion;
a reflecting member that reflects light from the light source toward the light-transmitting member and that is fixed to the light-transmitting member at a location different from the protrusion;
an auxiliary reflecting member that reflects light emitted from the translucent member and has a locking portion that locks the projection;
The locking portion includes a concave portion provided in the auxiliary reflecting member,
The recess is open on the light source side in the height direction of the auxiliary reflecting member and penetrates the auxiliary reflecting member in the thickness direction,
The lighting device, wherein the protrusion is locked to the bottom of the recess. a light source;
a translucent member having a protrusion;
a reflecting member that reflects light from the light source toward the light-transmitting member and that is fixed to the light-transmitting member at a location different from the protrusion;
an auxiliary reflecting member that reflects light emitted from the translucent member and has a locking portion that locks the projection;
The reflecting member has an annular projecting portion projecting from an end surface of the reflecting member opposite to the light source side in the height direction,
The illumination device, wherein a tip side of the annular protrusion is accommodated in an annular groove provided on the light source side in the height direction of the translucent member. a light source;
a translucent member having a protrusion;
a reflecting member that reflects light from the light source toward the light-transmitting member and to which the light-transmitting member is fixed;
an auxiliary reflecting member that reflects light emitted from the translucent member and has a locking portion that locks the projection;
the translucent member has a plurality of reflecting member locking projections, and the reflecting member has a plurality of locking portions,
the plurality of projections for locking the reflecting member are locked to the plurality of locking portions ,
The lighting device , wherein each of the engaging portions of the reflecting member includes a pair of engaging claws facing in the circumferential direction of the through hole of the reflecting member and having a circumferential gap into which the projecting portion for engaging the reflecting member is inserted. . The engaging portion of the auxiliary reflecting member includes a groove extending in the height direction of the auxiliary reflecting member and open on the light source side, and a blocking portion blocking the side of the groove opposite to the light source side. fruit,
4. The lighting device according to claim 1 , wherein said groove is open radially inwardly of said auxiliary reflecting member . The auxiliary reflecting member has an annular structure ,
5. The lighting system according to any one of claims 1 to 4, wherein said auxiliary reflecting member curves radially inwardly of said auxiliary reflecting member and has a curved portion included in said engaging portion of said auxiliary reflecting member. Device. The auxiliary reflecting member has an annular structure,
6. The auxiliary reflecting member according to any one of claims 1 to 5, wherein said auxiliary reflecting member has a protruding portion which protrudes radially inward from an inner peripheral surface of said auxiliary reflecting member and which is included in said locking portion of said auxiliary reflecting member. 1. A lighting device according to claim 1.

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