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Heat sink, lamp and method for manufacturing a heat sink

A technology of radiator and lampshade, applied in lampshade, lighting and heating equipment, components of lighting devices, etc., can solve problems such as insufficient

Active Publication Date: 2008-07-23
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While this arrangement helps dissipate heat, it may not be sufficient in certain circumstances

Method used

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  • Heat sink, lamp and method for manufacturing a heat sink
  • Heat sink, lamp and method for manufacturing a heat sink
  • Heat sink, lamp and method for manufacturing a heat sink

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Embodiment Construction

[0035] Fig. 1 shows a heat sink 1 according to an embodiment of the invention. The heat sink 1 comprises an inner part 2 and an outer part 3 joined to each other by one or more bridging elements 4 . The inner part is fitted to accommodate a light emitting element, such as a light emitting diode (LED), and preferably has a recess. The light emitting element can be arranged on the inner part 2 in such a way that a good thermal connection is produced between the light emitting element and the inner part, for example by using a suitable thermally conductive fixing compound. The inner part 2 also comprises a material with a high thermal conductivity, such as aluminium. An improvement in heat dissipation by conduction can be obtained by using devices to facilitate heat transfer. For example, the inner part 2 may be provided with a heat-dissipating film layer, such as described in US 6158502 to Novel Concepts Inc. So-called "heat pipes", that is to say closed tubes with a liquid i...

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PUM

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Abstract

The invention relates to a heat sink (1) for cooling a light element. The heat sink (1) has a thermally conducting inner part (2) suitable for accommodating the light element. The heat sink (1) additionally has a thermally conducting outer part (3) which encloses the inner part in at least one plane. The at least one light element is galvanically shielded from the thermally conducting inner part. The inner part (2) and the outer part (3) can be joined to one another via at least one thermally conducting bridging link (4) in such a way that there is at least one opening (5) between the inner part (2) and the outer part (3).

Description

technical field [0001] The invention relates to a heat sink for cooling light-emitting elements, which includes: [0002] - a thermally conductive inner portion adapted to regulate the at least one light emitting element; [0003] - A thermally conductive outer portion surrounding the inner portion in at least one plane. [0004] This type of cooling is especially important if the lifetime of the light-emitting element depends on the temperature in use. Life is shortened at higher operating temperatures. An example of a light-emitting element in which this relationship can be found is a light-emitting diode (LED), which has a high luminescence, such as what is commonly referred to as a power LED. Background technique [0005] German utility model application DE 202004004570 discloses a lighting device for a lighting device having a housing in which at least one LED is accommodated. To dissipate heat, the LED is placed on a cooling section attached to the housing. In an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V29/00
CPCF21K9/135F21V3/02F21Y2101/02F21V29/004F21V17/12F21K9/232F21Y2115/10F21V29/00F21V29/89F21V29/70
Inventor J·O·罗伊曼斯
Owner SIGNIFY HLDG BV