JP2012033333A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of simplifying an insulating structure and a heat-radiating structure and improving assembling operability.SOLUTION: The lighting fixture 10 includes a fixture body 11, a resin reflecting plate 19 mounted on the fixture body 11, and an LED board 16 mounted on the reflecting plate 19. The fixture body 11 and the reflecting plate 19 are in a non-contact state. A cover member 18 can secure an insulating structure since it is arranged separated from a heat-radiating plate 17 by a predesignated space distance, and can radiate heat from an LED light source 15 through the heat-radiating plate 17. Temperature of the heat from the LED light source 15 can be reduced by making the heat saturated in a space having the space distance.

Description

  The present invention relates to a lighting apparatus that uses an LED as a light source and is applied to, for example, a base light of a store or facility.

  Conventionally, a lighting fixture in which a plurality of LED light sources and a reflecting plate are housed in a panel is known (see, for example, Patent Document 1).

JP 2008-270144 A (FIG. 2, paragraph 0028)

The lighting fixture described in Patent Document 1 described above can irradiate light from the plurality of LED light sources toward the floor surface because the reflectors are arranged so as to surround the plurality of LED light sources.
By the way, the lighting fixture which accommodated the some LED light source and the reflecting plate in the panel similarly to the lighting fixture described in patent document 1 mentioned above is proposed.

  As shown in FIG. 6, in such a conventional lighting fixture 100, a reflector 102 and a panel 103 are attached to a metallic fixture body 104 on the front surface of an LED light source 101. In the lighting fixture 100, an LED substrate 105 on which the LED light source 101 is mounted is attached to a metal mounting plate 107 via a heat dissipation sheet 106 in order to efficiently dissipate the LED light source 101. Further, in the lighting fixture 100, an insulating sheet 108 is assembled between the mounting plate 107 and the LED substrate 105 in order to insulate the LED substrate 105.

However, in such a conventional lighting fixture 100, an insulating sheet 108 is assembled between the mounting plate 107 and the LED substrate 105 in order to insulate the LED substrate 105.
Therefore, in such a conventional lighting fixture 100, the number of parts related to the insulating structure increases, and the insulating structure cannot be easily formed.

Further, in such a conventional lighting fixture 100, the LED substrate 105 is attached to the attachment plate 107 via the heat dissipation sheet 106 in order to radiate the LED light source 101.
Therefore, in such a conventional lighting fixture 100, the number of parts related to the heat dissipation structure increases, and the heat dissipation structure cannot be easily formed.

  Further, in such a conventional lighting fixture 100, in assembly, an operation of attaching the heat dissipation sheet 106 to the LED substrate 105, an operation of attaching the insulating sheet 108 to the attachment plate 107, and an LED substrate 105 to which the heat dissipation sheet 106 is attached are provided. The assembly workability is poor because a plurality of operations including the attachment to the attachment plate 107 to which the insulating sheet 108 is attached are performed.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a lighting apparatus that can simplify the insulating structure and the heat dissipation structure and improve the assembly workability.

  The lighting fixture according to the present invention includes a fixture body, a reflector made of resin and attached to the fixture body, and an LED substrate attached to the reflector, and the fixture body and the reflector are in a non-contact state.

  The lighting fixture which concerns on this invention is equipped with the metal heat sink contact | abutted by the back surface of a LED board, and a heat sink and a fixture main body are a non-contact state.

  The lighting fixture which concerns on this invention is equipped with the metal cover member which forms sealed space in the state which formed the space between the fixture main body and the back surface side of the LED board.

  According to the lighting fixture according to the present invention, it is possible to simplify the insulation structure and the heat dissipation structure and improve the assembly workability.

The external appearance perspective view seen from diagonally downward of the lighting fixture of one Embodiment which concerns on this invention FIG. 1 is an external perspective view of the lighting apparatus of FIG. 1 is an exploded perspective view around the LED unit of the lighting apparatus of FIG. The side view explaining the assembly procedure of the lighting fixture of FIG. Sectional drawing of the principal part of the lighting fixture of FIG. Sectional drawing explaining the assembly procedure of the conventional lighting fixture

Hereinafter, a lighting apparatus according to an embodiment of the present invention will be described with reference to the drawings.
A lighting fixture 10 according to an embodiment of the present invention includes a fixture main body 11 having a top plate 12 and a side plate 13 and formed in a frame shape, and a single LED substrate 16 on which a plurality of LED light sources 15 are mounted. A plurality of LED units 14 arranged in the longitudinal direction of the instrument body 11, a heat sink 17 attached to the upper surface of the LED unit 14, and a lid member attached to the top plate 12 of the instrument body 11 above the heat sink 17. 18, a plurality of reflecting plates 20 corresponding to the plurality of LED light sources 15, a plurality of reflecting plate members 19 assembled to each of the LED units 14, and the same number as the plurality of reflecting plate members 19. It is applied to a base light that is provided with a plurality of panels 21 assembled to the reflector member 19 and a lighting device 22 and is directly attached to a ceiling construction surface of a store or facility.

FIG. 1 shows an external perspective view of a lighting fixture 10 according to an embodiment of the present invention as viewed obliquely from below, and FIG. 2 shows an external perspective view of the lighting fixture 10 as viewed from diagonally above.
As shown in FIG. 1, in the lighting fixture 10, the fixture body 11 is made of metal and accommodates a plurality of LED units 14 in the longitudinal direction of the side plate 13. The single LED unit 14 has a plurality of LED light sources (see FIG. 3) 15 arranged in the width direction and the longitudinal direction of the instrument body 11.
As shown in FIG. 2, the lighting device 22 is accommodated in a lighting device box 23 attached to the upper part of the fixture body 11. The lighting device 22 is an AC / DC converter (not shown), an inverter circuit, or the like, which converts a commercial power source into a DC power source by driving and supplies it to a printed circuit on the LED board 16 to cause the LED light source 15 to emit light.

FIG. 3 shows an exploded perspective view around the LED unit 14 of the lighting fixture 10.
As shown in FIG. 3, the heat radiating plate 17 attached to the upper surface of the LED unit 14 is formed in a square plate shape similar to the outer shape of the LED substrate 16 using heat-radiating aluminum as a base material. Since the heat radiating plate 17 is thermally connected to the LED substrate 16, the heat generated by the LED light source 15 is radiated upward.

  The reflection plate member 19 is formed to have an outer shape that is accommodated inside the top plate 12 of the instrument body 11 using, for example, a white hard resin material as a base material. The same number of reflectors 20 as the number of LED light sources 15 are connected to the reflector member 19. The reflector 20 has a top opening 24. The top opening 24 is assembled to coincide with the LED light source 15.

  The panel 21 is formed in a shape that covers the reflector member 19 using a transparent acrylic resin material. The panel 21 is a decorative panel having design properties. The panel 21 has a bottom plate 25 and an end plate 26 arranged on the bottom plate 25 on the end side in the longitudinal direction of the instrument body 11. The panel 21 has a side plate 27 on a side portion orthogonal to the longitudinal direction of the instrument body 11, and a flange 28 on the upper end portion of the side plate 27.

The side view explaining the assembly procedure of the lighting fixture 10 is shown in FIG.
As shown in FIG. 4, the reflection plate member 19 has a plurality of LED board mounting bosses 29 protruding upward from the reflection plate 20. The reflector member 19 arranges the LED board 16 on the LED board mounting boss 29 so that the LED light source 15 is arranged in the top opening 24 of the reflector 20. The LED board 16 is fixed to the reflector member 19 by screwing a screw (see FIG. 5) 30 into the LED board mounting boss 29.

  At this time, since the LED board 16 is only fixed to the resin reflection plate member 19 and insulated from the instrument body 11 in a non-contact manner, if the number of parts related to the insulation structure is large as in the conventional one, Therefore, it is possible to easily form an insulating structure.

A heat radiating plate 17 is disposed on the upper portion of the LED substrate 16 fixed on the upper portion of the reflecting plate member 19. After the heat radiating plate 17 is arranged on the LED substrate 16, the heat radiating plate 17 is screwed to the reflecting plate member 19 together with the heat radiating plate 17 by screws 30 for fixing the LED substrate 16. The heat sink 17 is disposed in a non-contact manner with respect to the instrument body 11. The lid member 18 is made of metal and has a larger outer shape than the heat radiating plate 17 and the LED substrate 16, and is attached to the top plate 12 so as to cover the opening 31 provided in the top plate 12 of the instrument body 11. The panel 21 has a flange 28 supported by the side plate 13 of the instrument body 11.
At this time, since the heat radiating plate 17 thermally connected to the LED substrate 16 is disposed in a non-contact manner with respect to the device main body 11, the heat radiating plate 17 can be reliably insulated from the device main body 11 together with the LED substrate 16. .

FIG. 5 shows a cross-sectional view of a main part of the lighting fixture 10.
As shown in FIG. 5, the lid member 18 is attached to the top plate 12 so as to cover the opening 31 provided in the top plate 12 of the instrument body 11. For this reason, the lid member 18 is arranged away from the heat radiating plate 17 from the heat radiating plate 17, for example, via a spatial distance L1 of 2.3 mm. The upper part is closed to form a sealed space 32.

  At this time, the lid member 18 covers the opening 31 provided on the top plate 12 of the instrument body 11 and is attached to the top plate 12, so that the heat from the LED light source 15 can be radiated to the outside and the sealed space 32 can be released. Intrusion of dust and the like can be prevented, and generation of static electricity can be prevented.

  Further, since the lid member 18 is arranged away from the heat radiating plate 17 via a predetermined spatial distance L1, an insulating structure can be secured by the spatial distance L1, and heat from the LED light source 15 can be radiated. The temperature can be reduced by dissipating heat through the plate 17 and saturating the heat in the space having the spatial distance L1.

As described above, the lighting fixture 10 according to the embodiment of the present invention described above is insulated from the fixture body 11 in a non-contact manner only by fixing the LED substrate 16 to the reflecting plate member 19 made of resin.
Therefore, the lighting fixture 10 of one embodiment according to the present invention can simplify the insulating structure and the heat dissipation structure and can improve the assembly workability without increasing the number of parts related to the insulating structure, unlike the conventional one.

Moreover, the lighting fixture 10 of one Embodiment which concerns on this invention is equipped with the heat sink 17 on the LED board 15, and the heat sink 17 is arrange | positioned with respect to the fixture main body 11 in non-contact.
Therefore, in the lighting fixture 10 according to the embodiment of the present invention, the radiator plate 17 that is thermally connected to the LED substrate 16 is disposed in a non-contact manner with respect to the fixture body 11, and the radiator plate 17 together with the LED substrate 16. Can be reliably insulated from the metal instrument body 11.

  And the lighting fixture 10 of one Embodiment which concerns on this invention is obstruct | occluded the lower part by the panel 21 because the cover member 18 covers the opening part 31 which the top plate 12 of the instrument main body 11 has, and is attached to the top plate 12. The sealed space 32 is formed by closing the upper part of the internal space of the instrument body 11. The lid member 18 is arranged away from the heat radiating plate 17 via a predetermined spatial distance L1.

  Therefore, in the lighting device 10 according to the embodiment of the present invention, the lid member 18 can prevent dust and the like from entering the sealed space 32 and can prevent generation of static electricity, and can secure an insulating structure by the spatial distance L1. At the same time, the heat from the LED light source 15 can be dissipated by the heat radiating plate 17 and saturated in the space having the spatial distance L1 to reduce the temperature.

  In addition, in the lighting fixture of this invention, an instrument main body, LED light source, a reflecting plate member, etc. are not limited to embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.

DESCRIPTION OF SYMBOLS 10 Lighting fixture 11 Appliance main body 16 LED board 17 Heat sink 18 Lid member 19 Reflector member (reflector)
20 Reflector 32 Sealed space

Claims (3)

An instrument body;
A reflector made of resin and attached to the instrument body;
An LED substrate attached to the reflector,
The lighting fixture whose said instrument main body and the said reflecting plate are a non-contact state. The lighting fixture according to claim 1,
A metal heat sink that is in contact with the back surface of the LED substrate;
The lighting fixture in which the said heat sink and the said instrument main body are a non-contact state. The lighting fixture according to claim 1 or 2,
A lighting fixture comprising a metal lid member that forms a sealed space in a state where a space is formed between the fixture main body and the back side of the LED substrate.

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