Light source unit
A technology of light source unit and light-emitting element, which is applied to lighting devices, cooling/heating devices of lighting devices, road vehicles, etc., can solve the problems of deterioration of light-emitting characteristics, temperature rise of light-emitting elements, thermal runaway, etc. Small bending stress and damage prevention effect
Active Publication Date: 2014-01-01
KOITO MFG CO LTD
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Problems solved by technology
[0009] Furthermore, as in Patent Documents 1 and 2, in a light source unit configured by mounting a plurality of light-emitting elements on one circuit board, when each light-emitting element emits light, the temperature of the light source power supply tends to rise due to the heat generated. , the temperature of the light-emitting element itself rises, causing so-called thermal runaway, and there is concern that the light-emitting characteristics will deteriorate
Therefore, the light source unit is provided with a heat sink for heat dissipation, but this heat sink becomes the main cause of the light source unit or lamp size increase.
Method used
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[0046] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following embodiments, although various limitations are made to constituent elements, types, combinations, shapes, relative arrangements, etc., these are merely examples, and the present invention is not limited. here.
[0047] figure 1 It is a cross-sectional view in the horizontal direction of an embodiment in which the present invention is applied to an RCL (rear combination lamp) used as a tail lamp and a stop lamp. This lamp is an example of a left RCL arranged at the left rear portion of an automobile, and a lamp housing 1 is formed by a container-shaped lamp body 11 with an opening in the front area and a front lens 12 mounted on the front opening of the lamp body 11. A light source unit 2 (details will be described later) in which an inner lens is integrated is housed in the lamp housing 1 . The above-mentioned lamp body 11 is arranged at the...
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The invention relates to a light source unit capable of preventing circuit board substrate and light emitting element damages caused by bending forces in processing and bending a flexible circuit board substrate. The light source unit is provided with a flexible circuit board substrate (22) used for bending processing along a predetermined bending line (B). A conducting film of the flexible circuit board substrate (22) is divided into a plurality of wire distribution pattern parts (225) through insulation dividing lines (224). The wire distribution pattern parts (225) carry at least one light emitting element (23). After a carrying area (22a) carrying the light emitting element (23) and a bending area (22b) used for bending processing are formed through division, the insulation dividing line (224) has a part extending in a generally orthometric direction relative to the bending line (B) in the bending area (22b) and is provided with a part extending in a direction with an angle smaller than an orthometric angle of the bending area (22b) in the carrying area (22a).
Description
[0001] technical area [0002] The present invention relates to a light source unit used as a light source equipped in vehicles such as automobiles, and more particularly to a light source unit configured by mounting a light-emitting element on a flexible circuit board and bending the flexible circuit board. Background technique [0003] In a lamp using a semiconductor light emitting element as a light source, especially a lamp using a plurality of light emitting elements, the plurality of light emitting elements are mounted on one circuit board as a light source unit to constitute a light source. When the lamp provided with such a light source unit is used as an automobile lamp, the light-emitting surface of the lamp, that is, the front lens or the front cover of the lamp is formed as an inclined surface or a curved surface in conformity with the shape of the automobile body. The positions of the elements also need to correspond to the shape of the front lens or the front cov...
Claims
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Login to View More IPC IPC(8): F21V23/00F21V29/00F21W101/02F21W107/10
CPCF21S43/195
Inventor 中村弘美近江武史
Owner KOITO MFG CO LTD