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Vehicular lamp

A technology for lamps and vehicles, which is applied in the direction of headlights, road vehicles, vehicle parts, etc., can solve problems such as the decrease of beam utilization rate, and achieve the effect of improving light distribution performance, improving low beam utilization rate, and simple structure

Active Publication Date: 2015-04-29
KOITO MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, part of the light directed toward the reflective member from the LED chip substantially coplanar with the front surface of the accessory is blocked (reflected) by the head of the screw, resulting in a problem that the utilization efficiency of the light beam in the vehicle lamp decreases.

Method used

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  • Vehicular lamp
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Examples

Experimental program
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Embodiment Construction

[0029] Hereinafter, embodiments of the present invention will be described based on examples.

[0030] Figure 1 to Figure 5 shows an embodiment in which the present invention is applied to a vehicle headlamp, figure 1 is a longitudinal sectional view of the automotive headlamp of this embodiment, figure 2 is a longitudinal sectional view of the state where the light source unit is mounted on the heat sink, image 3 It is an exploded perspective view showing the fixing structure of the LED module of the present embodiment; Figure 4 It is a top view showing the fixing structure of the LED module of this embodiment, Figure 5 is a sectional view showing the fixing structure of the LED module of the present embodiment ( Figure 4 Sectional view of line V-V shown).

[0031] In these figures, as figure 1 and figure 2 As shown, a vehicle headlamp 1 accommodates a projection-type lamp that uses an LED described later as a light source in a lamp chamber S formed by a lamp bo...

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PUM

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Abstract

A vehicular lamp has a light source unit having an LED and an optical element that performs light distribution control for directing light from the LED in a predetermined direction, a heat sink to which the light source unit is attached, and a lamp chamber in which the light source unit is disposed. The LED is an LED module formed by installing an LED chip on a power supply circuit board. The LED module is installed on a circuit board installation portion of the heat sink, and an attachment, which has a frame shape a size larger than the LED module and has a circuit board retaining portion at a center open portion of the attachment, is attached and fixed to the heat sink by a fixing member, whereby the LED module is held between the attachment and the circuit board installation portion.

Description

technical field [0001] The present invention relates to a vehicular lamp in which a light source unit having at least an LED as a light source and a reflective member that reflects light from the light source in a predetermined direction is mounted on a heat dissipation member and accommodated in a lamp chamber, and particularly relates to a power supply board via assembly on which an LED chip is mounted. A vehicle lamp installed at a prescribed position on a heat dissipation part. Background technique [0002] In recent years, the development of vehicle headlamps using LEDs as light sources has been in full swing. In this headlamp, a light source assembly consisting of LEDs as a light source and optical components (reflectors, projection lenses, etc.) that control the light emission of the LEDs in a prescribed direction is mounted on a heat dissipation component as its supporting component and is integrally formed. The transformation method is contained in the light chambe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S8/10F21V19/00F21V23/06F21W101/02F21Y101/02F21W107/10
CPCB60Q1/076F21S41/148F21S41/19F21S41/192F21S45/47F21V19/001F21V29/70
Inventor 近江武史松永崇塚本三千男
Owner KOITO MFG CO LTD