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Lighting device

A technology for lighting devices and heat dissipation parts, applied to lighting devices, components of lighting devices, cooling/heating devices of lighting devices, etc. Sufficient and other issues to achieve the effect of expanding the heat conduction area

Inactive Publication Date: 2012-09-26
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the fixture main body 120 of the lighting device of Patent Document 1, the wiring board 131 of the power supply unit 130 is only in contact with the fixture main body 120 at the peripheral edge portion, and the heat transfer area for conducting heat from the power supply unit 130 cannot be sufficiently ensured.
Generally, since high thermal conductivity resin has lower thermal conductivity than metal, if only the material of the appliance main body 120 is changed, the heat generated by the power supply unit 130 cannot be sufficiently transferred to the appliance main body 120, which may result in insufficient heat dissipation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0051] figure 2 It is a schematic appearance diagram of the lighting device 100 according to Embodiment 1 of the present invention. image 3 It is an exploded perspective view of the lighting device 100 according to Embodiment 1 of the present invention. Figure 4 is along figure 2 A schematic cross-sectional view of the lighting device 100 along line IV-IV. Figure 5 is along Figure 4 A schematic longitudinal section of the lighting device 100 along the line V-V. Figure 6 is along Figure 4 A schematic longitudinal section of the illuminating device 100 along line VI-VI of FIG.

[0052] Such as image 3 As shown, the lighting device 100 of Embodiment 1 includes: a light source module 1, equipped with a plurality of LEDs 12 as light sources; a hemispherical lampshade 8, covering the light source module 1; a heat sink 2, on which the light source module 1 is installed; a power circuit 6, Supply the power used to drive the light source module; the heat conduction plat...

Embodiment approach 2

[0083] Figure 10 is a schematic cross-sectional view of the lighting device 200 according to Embodiment 2 of the present invention. Figure 11 It is a schematic longitudinal sectional view of the lighting device 200 according to Embodiment 2 of the present invention. In addition, the same code|symbol is attached|subjected to the same part as Embodiment 1, and detailed description is abbreviate|omitted.

[0084] Inside the heat dissipation unit 9 , a heat conduction cylinder 10 serving as a heat conduction unit that transfers heat from heating elements such as the LED 12 and the power supply circuit 6 to the heat dissipation unit 9 is embedded. The heat conducting cylinder 10 is a good conductor of heat, for example, made of metal products such as aluminum.

[0085] The shape of the heat conduction cylinder 10 is a square cylinder capable of accommodating the power supply circuit 6 inside. The heat conduction cylinder 10 includes: a connecting portion 10a, which is located ...

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PUM

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Abstract

A lighting device (100) comprises a light source; a power supply circuit (6) that supplies electricity to the light source; a radiator unit (3), further comprising an electrical insulating material, which radiates heat from the power supply circuit (6) that is housed therewithin to outside air; and a thermoconductor unit that conducts heat from the power supply circuit (6) to the radiator unit (3). The radiator unit (3) and the thermoconductor unit are thermally connected. In addition to implementing reduced weight upon the lighting device (100), the heat conduction from the thermoconductor unit to the radiator unit (3) is improved thereupon.

Description

technical field [0001] The present invention relates to an illuminating device, which includes a heating element, a heat conduction part that transfers heat from the heating element, and a heat dissipation part that dissipates heat from the heat conducting part. Background technique [0002] Generally, a light source and a heat generating component (heat generating body) such as a power supply unit that supplies power to the light source are accommodated inside the lighting device. When the temperature of the heat-generating component rises due to the heat generated by the heat-generating component, performance of the heat-generating component such as light-emitting diodes (hereinafter referred to as LEDs) and electronic components constituting the light source and the power supply unit cannot be guaranteed. In addition, from the viewpoint of safety, it is undesirable that the temperature of the outer surface of the lighting device rises excessively. Therefore, conventional...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21V29/00H01L33/00F21Y101/02
CPCF21K9/00F21V23/006F21V3/00F21K9/13F21V23/003F21V19/0055F21V29/262F21K9/1355F21Y2101/02F21V29/004F21V29/24F21V29/713F21V29/85F21K9/23F21Y2115/10F21K9/238
Inventor 山本昌史赤尾英行
Owner SHARP KK