JP6238165B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture that is used by being embedded in a mounting hole provided in a mounted portion.

2. Description of the Related Art Conventionally, there has been known a lighting fixture that is embedded in a mounting hole provided in a mounting portion such as a ceiling and mainly illuminates a floor surface or the like (for example, see Patent Document 1).
As shown in FIG. 16, the LED lighting apparatus 100 described in Patent Literature 1 is attached to an attachment hole 102 provided in the ceiling 101 to illuminate the lower part.
The LED lighting apparatus 100 has an outer case 103, and an inner heat sink 104 is provided at the center of the outer case 103. A chip substrate 106 having LED elements 105 is attached to the lower surface of the internal heat sink 104. A light distribution control lens 107 is provided below the chip substrate 106.

A control circuit 108 that performs lighting control of the LED element 105 is provided on the upper side of the internal heat sink 104.
Outside the outer case 103, an attachment member 109 for attaching the outer case 103 to the attachment hole 102 and an external fin 111 for releasing heat generated by the LED element 105 to the outside are provided.
A lid 110 is provided on the upper side of the outer case 103.

JP 2012-119230 A (FIG. 1)

However, in the conventional lighting apparatus (LED lighting apparatus 100) described in Patent Document 1 as described above, the outer case 103 is formed by aluminum die casting, so that the weight of the LED lighting apparatus 100 increases. is there.
Therefore, in order to solve the weight problem, a lighting apparatus using a metal plate material has been considered. In this case, since the main body, the frame, the power supply device mounting portion, etc. are separately formed and connected by the metal plate material, the number of parts increases, resulting in a problem of cost increase and productivity reduction.

  The present invention has been made to solve the conventional problems, and has an object to provide a lighting apparatus that can reduce weight and reduce the number of parts, thereby reducing costs and improving productivity. To do.

The lighting fixture of the present invention includes a fixture main body attached to the attached portion, and a light source attached to the fixture main body, and the fixture main body is exposed to the attached portion, and the frame-like collar portion, A light source mounting part for mounting a light source, and a reflection part that is provided between the flange part and the light source mounting part and has a shape that increases in diameter toward the direction away from the light source, are integrally formed of a metal plate. comprises a plurality of spring mounting portion provided on the opposite side to the reflecting surface of the reflecting portion, before Symbol a connecting portion for connecting the respective spring attachment portion, said connecting portion, cross the back side of the light source mounting portion A connecting plate, fixing a power supply unit to the connecting plate, wherein the connecting plate is a part of a bottom plate of a power supply box that houses the power supply unit, and the connecting plate protrudes toward the light source mounting portion side The base part to be bent is formed, and the connecting plate and the light In which a gap is provided between the mounting portion.

  Moreover, the lighting fixture of this invention is provided with the said power supply part separately from the said instrument main body, and was connected to the said instrument main body by the electric wire.

  Moreover, the lighting fixture of this invention is a step part which the said light source attachment part protruded in the light irradiation direction the part corresponding to the LED board of the said light source in the top plate of the said reflection part.

  Furthermore, in the lighting fixture of the present invention, the plate thickness of the stepped portion is thinner than the plate thickness of other portions.

  In the present invention, the instrument main body is formed by integrally molding the collar portion, the light source attachment portion, and the reflection portion with a metal plate. In addition, a plurality of spring mounting portions are provided outside the reflecting portion, and a connecting portion that connects the spring mounting portions is provided across the back side of the light source mounting portion. Accordingly, it is possible to provide a lighting apparatus having an effect that the weight can be reduced and the number of parts can be reduced to reduce costs and improve productivity.

The perspective view of the lighting fixture of 1st Embodiment which concerns on this invention. Sectional view at II-II position in FIG. The disassembled perspective view of the spring attachment part and attachment spring in the lighting fixture of 1st Embodiment which concerns on this invention The perspective view which looked at the lighting fixture of 2nd Embodiment which concerns on this invention from upper direction The exploded perspective view of the lighting fixture of 2nd Embodiment which concerns on this invention The perspective view which looked at the lighting fixture of 3rd Embodiment which concerns on this invention from upper direction The top view which looked at the lighting fixture of 3rd Embodiment which concerns on this invention from upper direction The perspective view which looked at the lighting fixture of 4th Embodiment which concerns on this invention from upper direction The exploded perspective view of the lighting fixture of 4th Embodiment which concerns on this invention The exploded perspective view of the lighting fixture of 5th Embodiment which concerns on this invention The perspective view which cut | disconnected the instrument main body in the lighting fixture of 5th Embodiment which concerns on this invention. Sectional drawing of the lighting fixture of 6th Embodiment which concerns on this invention The perspective view of the partial fracture | rupture of the fixture main body in the lighting fixture of 6th Embodiment which concerns on this invention The perspective view which cut | disconnected the instrument main body in the lighting fixture of 7th Embodiment which concerns on this invention. The perspective view which cut | disconnected the instrument main body in the lighting fixture of 8th Embodiment which concerns on this invention. Cross section of conventional downlight

(First embodiment)
Hereinafter, the lighting fixture of 1st Embodiment is demonstrated using drawing.
As shown in FIGS. 1 and 2, the lighting apparatus 10A of the first embodiment is used as a downlight that is embedded in a mounting hole 12 provided in a ceiling 11 that is a mounted portion and mainly illuminates the lower part. Can do.
In the following description, the light irradiation direction is “down”, and the side opposite to the light irradiation direction is “up”.

The lighting fixture 10 </ b> A includes a fixture main body 20 that is attached to the attachment hole 12, and an attachment spring 50 for attaching the fixture main body 20 to the attachment hole 12. Here, a pair of attachment springs 50 are provided at symmetrical positions with respect to the instrument body 20, but three or more attachment springs 50 may be provided.
The instrument main body 20 has a frame-shaped flange portion 22 that contacts the lower surface of the ceiling 11 and is exposed downward when attached to the attachment hole 12. The collar portion 22 is formed in a circular shape, and an outer peripheral edge portion thereof is bent upward, and an upright portion 221 is provided over the entire circumference. Thereby, the intensity | strength of the collar part 22 increases.
Note that the collar portion 22 may have a square shape in addition to the circular shape.
A reflecting portion 23 having a shape that increases in diameter from the inner peripheral end of the collar portion 22 toward the inside and upward toward the direction away from the LED unit (light source) 30 described later (that is, downward) is provided. The cross section of the reflecting surface 231 of the reflecting portion 23 may be a straight line, a case of an upwardly convex curve, or a downwardly convex curve.
A cylindrical tubular portion 21 is provided on the upper side of the reflecting portion 23. A horizontal top plate (light source mounting portion) 24 is provided at the upper end of the tube portion 21.

The instrument body 20 is formed from a single metal plate material such as an aluminum plate.
That is, the collar part 22, the reflection part 23, the cylinder part 21, and the top plate 24 mentioned above are integrally formed from one metal plate material.
Various processing methods can be used for the integral molding.
For example, blow molding or press molding is possible, but the present invention is not limited to this.
Blow molding is suitable for integrally molding with a uniform plate thickness, and has an advantage of low cost because there is only one mold.
In press molding, the corner portion may be thinned, but the plate thickness can be changed depending on the part.

The top plate 24 of the instrument body 20 is provided with a stepped portion 27 that is lowered downward by one step, and an LED unit 30 that is a light source is attached to the lower surface of the stepped portion 27.
The step portion 27 is formed by projecting a portion of the top plate 24 corresponding to the circuit board (LED board) 32 of the LED unit 30 in the light irradiation direction (ie, downward). The stepped portion 27 can be formed integrally, for example, by providing a pair of slits parallel to the top plate 24 of the instrument body 20 and pushing the center portion downward.
The plate thickness T1 of the stepped portion 27 is formed to be thinner than other portions of the instrument body 20, for example, the plate thickness T2 of the flange portion 22, the plate thickness T3 of the reflecting portion 23, and the plate thickness T4 of the top plate 24. .

As the LED unit 30 provided on the lower surface of the stepped portion 27, for example, a COB (Chip-on-board) type can be used.
The LED unit 30 may be an SMD (Surface Mount Device) type.
The LED unit 30 is obtained by mounting an LED chip 31 on a circuit board 32, and optical members such as a reflector 33 and a lens 34 are provided in front of the LED chip 31.
Therefore, the illumination light emitted from the LED unit 30 is directly irradiated downward, or reflected by the reflecting surface 231 of the reflecting portion 23 and irradiated downward.
In addition, what is necessary is just to select the Fresnel lens, milky lens, etc. which condense the shape of the lens 34 suitably.

In addition, as the LED unit 30, a replaceable or non-replaceable one can be used.
Here, what can be replaced means that the LED itself has a unit shape, is completed by itself, can be fitted (installed) to the main body and the like and can emit illumination light. In this type, power can be supplied by fixing with a screw or the like and connecting a connector.

A pair of spring attachment portions 26 for attaching the attachment springs 50 are provided on the upper side of the flange portion 22 outside the reflection portion 23 at positions symmetrical to the center of the instrument body 20.
As shown in FIG. 3, here, a rectangular opening 262 is provided in the spring mounting portion 26, and the left and right edges of the opening 262 are bent into an L shape so as to protrude outward, and a pair of support portions 261 are formed. Are provided in parallel and facing each other.
The spring attachment portion 26 is not limited to the above-described support portion 261 as long as it is for attaching the attachment spring 50 and can be molded integrally.

The attachment spring 50 includes a rectangular plate-like support portion 51 supported by the spring attachment portion 26, and a spring body portion 52 that is bent outward from the lower end portion of the support portion 51.
The rectangular support part 51 is formed such that the width of the upper part 511 is larger than the width of the lower part 512, and the center part of the support part 51 is provided with a U-shaped slit and a locking piece 513. ing. The locking piece 513 slightly protrudes in the direction opposite to the spring main body 52.
The spring body 52 is biased toward the heel direction (see arrow A in FIG. 2).

Therefore, when the support portion 51 of the attachment spring 50 is inserted between the pair of support portions 261 of the spring attachment portion 26 from above to below, the wide upper portion 511 of the support portion 51 is locked by the support portion 261. . Thereby, the attachment spring 50 is attached to the spring attachment portion 26.
Further, since the upper side 514 of the locking piece 513 of the support part 51 is hooked on the upper side 263 of the opening 262 of the spring attachment part 26, it is possible to prevent the support part 51 from falling off the spring attachment part 26.

As shown in FIGS. 1 and 3, the pair of spring mounting portions 26 are coupled across the back side (upper side) of the top plate 24 of the instrument body 20 by a coupling portion 40 that is a plate-like member.
That is, the connecting portion 40 has spring mounting portions 26 formed vertically at both ends, an inclined surface 41 inclined upward from the upper side of the spring mounting portion 26 toward the center of the instrument body 20, and both inclined surfaces 41. And a horizontal connecting plate 42 provided between the upper ends of the two.
The plate thickness of the spring mounting portion 26 and the connecting portion 40 is greater than the plate thickness of the mounting spring 50.
Thereby, the deformation | transformation of the spring attachment part 26 or the connection part 40 by the stress from the attachment spring 50 can be prevented.

The spring mounting portion 26 and the inclined surface 41 are provided with reinforcing ribs 43 for holding a flat plate shape at both ends in the width direction.
A base portion 421 (see FIG. 2) that protrudes downward is bent on the lower surface of the connecting plate 42, and a gap is provided between the connecting plate 42 and the top plate 24 of the tube portion 21 of the instrument body 20. Fixed away. Thereby, the heat generated by the power supply unit 60 is prevented from being transmitted to the LED unit 30.

The effects of the lighting apparatus 10A will be described.
The lighting fixture 10 </ b> A has a fixture body 20 that is attached to a mounting hole 12 provided in the ceiling 11. The appliance main body 20 is provided between the frame-shaped flange 22 exposed on the lower surface of the ceiling 11, the top plate 24 to which the LED unit 30 is attached, the flange 22 and the LED unit 30, and away from the LED unit 30. It has the reflection part 23 of the shape expanded diameter as it goes. The instrument main body 20 is formed by integrally molding the flange portion 22, the top plate 24, and the reflection portion 23 with a metal plate.
A plurality of spring mounting portions 26 are provided on the side of the reflecting portion 23 opposite to the reflecting surface 231, and a connecting portion 40 that connects each spring mounting portion 26 is provided across the back side (top) of the top plate 24. ing.
As a result, the weight can be reduced and the number of parts can be reduced to reduce costs and improve productivity.

  Moreover, 10 A of lighting fixtures provided the step part 27 which made the part corresponding to the circuit board 32 of the LED unit 30 in the top plate 24 of the reflection part 23 protrude in the light irradiation direction as a light source attachment part. For this reason, the creeping path | route which transmits the heat | fever which the LED unit 30 emits to the top plate 24 of the instrument main body 20 becomes long, and heat dissipation improves.

  Furthermore, in the lighting fixture 10A, the plate thickness T1 of the step portion 27 to which the LED unit 30 is attached is the plate thickness of other portions, that is, the plate thickness T2 of the flange portion 22, the plate thickness T3 of the reflection portion 23, and the plate of the top plate 24. Since it is formed thinner than thickness T4 etc., heat dissipation improves.

(Second Embodiment)
Next, the lighting fixture of 2nd Embodiment is demonstrated.
In addition, the same code | symbol is attached | subjected to the site | part which is common in 10 A of lighting fixtures of 1st Embodiment mentioned above, and the overlapping description is abbreviate | omitted.
As shown in FIGS. 4 and 5, in the lighting fixture 10 </ b> B of the second embodiment, the power supply unit 60 is attached on the connecting portion 40 in the lighting fixture 10 </ b> A of the first embodiment described above.

The power supply unit 60 is supplied with power from a commercial power supply and supplies lighting power to the LED unit 30, and includes a power supply box 61, a terminal block 62, and a terminal block cover 63.
As shown in FIG. 5, the connecting plate 42 of the connecting portion 40 is extended in a direction orthogonal to the longitudinal direction of the connecting portion 40 to form a bottom plate 611 of the power supply box 61. Both sides along the longitudinal direction of the connecting portion 40 of the bottom plate 611 are bent upward to be provided with a pair of side walls 612.

The connection plate 42 and the bottom plate 611 are covered with the lid portion 64.
The lid portion 64 is formed of a metal plate, and includes a side plate 641 provided on the front side (the instrument body 20 side) of the pair of side walls 612, a front plate 642 provided on the front side of the side plates 641, and the lid portion 64. A rear plate 643 and an upper plate 644 are provided at the rear end.
A terminal block 62 and a terminal block cover 63 are attached to the outer surface of the rear plate 643 (see FIG. 4).

The effect of the lighting fixture 10B is demonstrated.
In the lighting fixture 10 </ b> B, the power supply unit 60 is fixed on the connecting unit 40.
For this reason, the heat dissipation of the power supply part 60 improves and the influence which the heat which the power supply part 60 emits has on the LED unit 30 can be made small.

In the lighting fixture 10 </ b> B, the connecting portion 40 is a part of the bottom plate 611 of the power supply box 61 that houses the power supply portion 60.
For this reason, by making the connecting part 40 and the bottom plate 611 of the power supply box 61 common, the weight can be reduced and the number of parts can be reduced, thereby reducing the cost and improving the productivity.

(Third embodiment)
Next, the lighting fixture of 3rd Embodiment is demonstrated.
In addition, suppose that the same code | symbol is attached | subjected to the site | part which is common in the lighting fixture 10A of 1st Embodiment mentioned above, and the lighting fixture 10B of 2nd Embodiment, and the overlapping description is abbreviate | omitted.
As shown in FIGS. 6 and 7, in the lighting fixture 10 </ b> C of the third embodiment, the lighting fixture 10 </ b> A of the first embodiment (shown here as “lamp 70”) and the lighting of the second embodiment. The power supply unit 60 provided on the connecting unit 40 with the instrument 10B is provided separately.
That is, the wire outlet 44 is provided in the connecting plate 42 of the lamp 70, and the lamp 70 and the power supply unit 60 are connected by the electric wire 65.
An installation stand 66 is provided below the power supply box 61 so that it can be placed at any place.

The effect of the lighting fixture 10C will be described.
In the lighting fixture 10C, the power supply unit 60 is provided separately from the lamp 70 and is connected by the electric wire 65, so that it can be easily installed even in a place where the housing part of the lamp 70 is narrow.

(Fourth embodiment)
Next, the lighting fixture of 4th Embodiment is demonstrated.
In addition, the same code | symbol is attached | subjected to the site | part which is common in the lighting fixture 10A of 1st Embodiment thru | or the lighting fixture 10C of 3rd Embodiment mentioned above, and the overlapping description is abbreviate | omitted.
As shown in FIGS. 8 and 9, in the luminaire 10 </ b> D of the fourth embodiment, the connecting portion 40 that connects each spring mounting portion 26 is provided over the entire circumference on the outer side of the reflecting portion 23. Forming. A circular connecting plate 42 is provided at the upper end of the cylindrical body 25.
Here, the power supply unit 60 is mounted on the connecting plate 42, but the power supply unit 60 may be provided separately and connected by the electric wire 65, similarly to the lighting fixture 10C of the third embodiment. it can.
Moreover, although the case where the two or more spring attaching parts 26 are provided is shown, two pieces can also be provided like each embodiment mentioned above. Alternatively, three or more can be provided.

The effect of lighting fixture 10D is demonstrated.
In the luminaire 10D, the connecting portion 40 that connects the spring mounting portion 26 is provided over the entire circumference to form the cylindrical body 25. Therefore, the strength of the connecting portion 40 increases.
Moreover, since the number of the attachment springs 50 is not limited, two or more attachment springs 50 can be provided.

(Fifth embodiment)
Next, the lighting fixture of 5th Embodiment is demonstrated.
In addition, suppose that the same code | symbol is attached | subjected to the site | part which is common in the lighting fixture 10A of 1st Embodiment mentioned above, or the lighting fixture 10D of 4th Embodiment, and the overlapping description is abbreviate | omitted.
As shown in FIGS. 10 and 11, in the lighting fixture 10E of the fifth embodiment, the fixture body 20 is provided with a recess.
The reflection part 23 of the instrument main body 20 has a truncated cone shape. The buses of the reflecting surface 231 and the outer surface 232, which are the inner surfaces of the reflecting portion 23, are straight lines. The outer surface 232 is provided with a recess 233, and the collar portion 22 is provided with a recess 22A. In addition, a recessed part can also be provided in the reflective surface 231 of the reflective part 23, and the inner and outer surfaces of the cylinder part 21. FIG.

The concave portion 233 provided in the reflecting portion 23 is a groove having a V-shaped cross section, and a plurality of circles can be provided in parallel (concentric) on the outer surface 232 or in a spiral shape. Note that the cross-sectional shape of the recess 233 may be a semicircular shape or a rectangular shape.
The distance between the refracting part of the reflecting part 23 and the cylindrical part 21 and the uppermost concave part 233 is L1, and the distance between the refracting part of the reflecting part 23 and the flange part 22 and the lowermost concave part 233 is set. Let the distance be L2. The distance L1 is set to be smaller than the distance L2 and 1 mm or more (that is, 1 mm <L1 <L2).

Further, the depth D1 of the recess 233 is set so as to be deep at the lower part of the reflecting part 23 and become shallower toward the upper part.
Thereby, the surface area of the reflection part 23, the collar part 22, the cylinder part 21, etc. can be increased, and heat dissipation can be improved.

Further, the recess 22A provided in the flange 22 is a recess having a rectangular cross section here. The recess 22 </ b> A forms a gap 222 between the flange member 22 and the cushion material 13 provided between the ceiling 11 when the lighting apparatus 10 </ b> E is attached to the ceiling 11.
Thereby, since the upper surface of the collar part 22 also has an open surface, heat dissipation can be improved.

(Sixth embodiment)
Next, the lighting fixture of 6th Embodiment is demonstrated.
In addition, suppose that the same code | symbol is attached | subjected to the site | part which is common in the lighting fixture 10A of 1st Embodiment mentioned above thru | or the lighting fixture 10E of 5th Embodiment, and the overlapping description is abbreviate | omitted.
As shown in FIG. 12, the luminaire 10 </ b> F of the sixth embodiment is attached to the attachment hole 12 provided in the ceiling 11 and illuminates the lower part.

The lighting fixture 10 </ b> F has a fixture body 20, and an internal heat sink 28 is provided at the center of the fixture body 20. An LED unit 30 is provided on the lower surface of the internal heat sink 28. The LED unit 30 includes an LED chip 31 and a circuit board 32 on which the LED chip 31 is mounted. A lens 34 is provided in front (downward) of the circuit board 32.
In front of (below) the LED unit 30 and the lens 34, a reflecting portion 23 having a reflecting surface 231 on the inner surface is provided.

On the upper side of the internal heat sink 28, a power supply unit 60 that performs lighting control of the LED chip 31 is provided.
On the outside of the instrument main body 20, there are provided an attachment spring 50 for attaching the instrument main body 20 to the attachment hole 12 and a heat radiation fin 29 for releasing heat generated by the LED chip 31 to the outside.
A lid 67 is provided on the upper side of the instrument body 20.

As shown in FIG. 13, the reflecting portion 23 has an overall truncated cone shape, and has a ring-plate-shaped flange portion 22 at the lower end portion. In addition, a horizontal mounting surface 234 is provided at the upper end portion of the reflecting portion 23.
A concave portion 233 is provided on the outer surface 232 of the reflecting portion 23. The recess 233 is a groove having a V-shaped cross section, and a plurality of circles can be provided in parallel (concentric circles) or in a spiral shape. Note that the cross-sectional shape of the recess 233 may be a semicircular shape or a rectangular shape.
Thereby, the surface area of the reflection part 23 can be increased and heat dissipation can be improved.

(Seventh embodiment)
Next, the lighting fixture of 7th Embodiment is demonstrated.
In addition, the same code | symbol is attached | subjected to the site | part which is common in the lighting fixture 10A of 1st Embodiment mentioned above thru | or the lighting fixture 10F of 6th Embodiment, and the overlapping description is abbreviate | omitted.
As shown in FIG. 14, in the lighting fixture 10G of the seventh embodiment, the outer surface 232 of the reflecting portion 23 is provided with a recess 235 in the vertical direction along the generatrix. The cross-sectional shape of the recess 235 can be, for example, a V shape, a rectangle, a semicircular shape, or the like. Moreover, the recessed part 235 can also be provided diagonally with respect to a bus-line.
Thereby, the surface area of the reflection part 23 can be increased and heat dissipation can be improved.

(Eighth embodiment)
Next, the lighting fixture of 8th Embodiment is demonstrated.
In addition, suppose that the same code | symbol is attached | subjected to the site | part which is common in the lighting fixture 10A of 1st Embodiment mentioned above thru | or the lighting fixture 10G of 7th Embodiment, and the overlapping description is abbreviate | omitted.
As shown in FIG. 15, in the lighting fixture 10 </ b> H of the eighth embodiment, a recess 236 is provided on the outer surface 232 of the reflecting portion 23. The cross-sectional shape of the recess 236 is, for example, a hemispherical shape, and can be arranged in a lattice shape or a staggered pattern. Although not shown, the surface can be uneven by shot blasting.
Thereby, the surface area of the reflection part 23 can be increased and heat dissipation can be improved.

  The lighting fixture of the present invention is not limited to the above-described embodiment, and appropriate modifications and improvements can be made.

10A, 10B, 10C, 10D, 10E, 10F, 10G, 10H Lighting fixture 11 Ceiling (attached part)
20 instrument body 22 buttock part 23 reflecting part 231 reflecting surface 24 top plate (light source mounting part)
26 Spring mounting portion 27 Step portion 30 LED unit (light source)
32 Circuit board (LED board)
40 connecting portion 60 power supply portion 61 power supply box 611 bottom plate 65 electric wire T1 plate thickness of stepped portion

Claims (4)

An instrument body to be attached to the attached part;
A light source attached to the instrument body,
The instrument main body is provided between the frame-shaped flange portion exposed to the mounted portion, the light source mounting portion to which the light source is mounted, the flange portion and the light source mounting portion, and moves away from the light source. The reflective part of the shape that expands the diameter is integrally formed with a metal plate,
A plurality of spring mounting portions provided on the side opposite to the reflecting surface of the reflecting portion;
And a connecting portion for connecting the front SL each spring mounting portion,
The connecting portion has a connecting plate straddling the back side of the light source mounting portion,
Fixing the power supply to the connecting plate;
The connecting plate is a part of a bottom plate of a power supply box that houses the power supply unit,
The connecting plate is formed by bending a base portion protruding toward the light source mounting portion side,
The lighting fixture which provided the clearance gap between the said connection plate and the said light source attachment part . The lighting fixture according to claim 1 ,
A lighting fixture in which the power source is provided separately from the fixture body and connected to the fixture body by an electric wire. The lighting fixture according to claim 1 or 2 ,
The lighting fixture in which the light source mounting portion is a stepped portion in which a portion corresponding to the LED substrate of the light source on the top plate of the reflecting portion is projected in the light irradiation direction. The lighting fixture according to claim 3 ,
The lighting fixture whose plate | board thickness of the said step part is thinner than the plate | board thickness of another location.

Images