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Lighting device having a light source heat sink arranged separate from a driver

A lighting device and driver technology, applied in lighting devices, lighting device parts, lighting device cooling/heating devices, etc., can solve the problems of expensive assembly, circulation, trouble, etc., and achieve material cost reduction, energy consumption reduction, Easy to assemble and disassemble

Active Publication Date: 2015-02-04
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve heat dissipation, the heat sink driver is usually fixed in the cavity of the heat sink by thermal glue (or thermal potting material), however this is not only expensive but also makes assembly and cycling more troublesome

Method used

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  • Lighting device having a light source heat sink arranged separate from a driver
  • Lighting device having a light source heat sink arranged separate from a driver
  • Lighting device having a light source heat sink arranged separate from a driver

Examples

Experimental program
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Embodiment Construction

[0027] The lighting device according to the embodiment of the present invention will refer to Figure 1 to Figure 3 is described.

[0028] Figure 1 to Figure 3 A lighting device 1 is shown having a base 2 (or lower part) and an upper part 3 opposite the base 2 . At the base 2 of the lighting device 1 there are provided a cap 4 (such as a screw cap) for fitting the lighting device 1 inside a lamp fitting and a driver heat sink 5 (also referred to as an additional heat sink in this disclosure) defining a cavity 6 . In the cavity 6, a driver 7 (such as a printed circuit board PCB driver) for driving the light source 13 of the lighting device 1 is arranged. Preferably, the driver 7 is mounted in the cavity 6 without (or at least only sparingly used) hot glue or potting in order to facilitate assembly and recycling of the lighting device 1 . The driver heat sink 5 may be made of a material with high thermal conductivity, for example a metal such as aluminum. Alternatively, sa...

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PUM

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Abstract

A lighting device (1) comprises a driver (7) arranged at a base (2) of the lighting device (1), a heat sink (14) arranged at a portion (3) of the lighting device (1), separated from the driver (7), a light source (13) mounted to the heat sink (14), and a wire (10) arranged to electrically connect the light source (13) to the driver (7), wherein a portion of the wire (10) extending from the base (2) to the portion of the lighting device (1) is arranged to be exposed to light from the light source (13). The present embodiment is advantageous in that the thermal performance is improved and the lifetime of the lighting device (1) is increased. Further, the exposed wire (10) may be illuminated by the light source (13) and visible from outside the lighting device (1), thereby having the appearance of a filament.

Description

technical field [0001] The invention generally relates to the field of lighting devices having a light source heat sink arranged separately from a driver of the lighting device in order to improve the thermal performance of the lighting device. Background technique [0002] Thermal performance is a critical issue for the lifetime of light emitting diode (LED) based lighting devices. LEDs typically generate most of the heat within the lighting fixture, while drivers (used to electrically drive the LEDs) generate only a small portion of the heat. LEDs can withstand relatively high temperatures compared to drivers, some components of which are sensitive to high temperatures and age over time if exposed to heat. However, in current LED-based lighting fixtures, the LED and the driver are typically placed adjacent to each other and connected to the same heat sink. Since the heat generated by the LEDs adversely affects the driver, heat dissipation from the driver is placed in hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V29/503F21V7/00F21V23/02F21V23/00F21Y101/02
CPCF21S2/00F21V7/22F21V23/003F21Y2101/00
Inventor 王宝段晓青R·郭袁川
Owner SIGNIFY HLDG BV