# US 2015/0103545 A1 · Vehicle lamp and method of manufacturing the same

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- Number: US 2015/0103545 A1
- Document ID: US20150103545A1
- Status: Published application
- Kind: A1
- Application number: 14/507,341
- Filed: 2014-10-06
- Published: 2015-04-16
- Earliest claimed: 2013-10-11
- Assignees: Koito Manufacturing Co., Ltd.
- Applicants: Koito Manufacturing Co., Ltd.
- Inventors: Shingo KATO
- Web page: https://patentgrep.com/patent/US20150103545A1

## CPC

- F21S 41/143: the main emission direction of the LED being parallel to the optical axis of the illuminating device
- B22D 19/00: Casting in, on, or around objects which form part of the product (B22D23/04 takes precedence; alumino-thermic welding B23K23/00; coating by casting molten material on the substrate C23C6/00)
- B22D 25/02: by its peculiarity of shape; of works of art {(cylinders, pistons B22D15/02)}
- F21S 41/147: the main emission direction of the LED being angled to the optical axis of the illuminating device
- F21S 41/148: the main emission direction of the LED being perpendicular to the optical axis
- F21S 41/19: Attachment of light sources or lamp holders (achieving variable light distribution by movable light sources F21S41/657)
- F21S 41/192: {Details of lamp holders, terminals or connectors}
- F21S 41/25: Projection lenses
- F21S 41/255: Lenses with a front view of circular or truncated circular outline
- F21S 41/295: {specially adapted to projection lenses}
- F21S 41/321: {the reflector being a surface of revolution or a planar surface, e.g. truncated}
- F21S 41/336: {with discontinuity at the junction between adjacent areas}
- F21S 41/39: Attachment thereof (achieving variable light distribution by movable reflectors F21S41/675)
- F21S 41/40: characterised by screens, non-reflecting members, light-shielding members or fixed shades
- F21S 41/43: characterised by the shape thereof
- F21S 41/68: by acting on screens
- F21S 45/40: Cooling of lighting devices
- F21S 45/47: Passive cooling, e.g. using fins, thermal conductive elements or openings
- F21W 2102/18: for overhead signs
- F21Y 2115/10: Light-emitting diodes [LED]
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- B22D: CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES (shaping of plastics or substances in a plastic state B29C; metallurgical processing, selection of substances to be added to metal C21, C22)
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

A vehicle lamp includes a light source including a semiconductor light emitting device, and a metal support member on which the light source is mounted. The support member is integrally formed with a shade portion configured to block a portion of light emitted from the semiconductor light emitting device.

## Claims

### Claim 1

A vehicle lamp comprising:
a light source including a semiconductor light emitting device; and
a metal support member on which the light source is mounted, wherein
the support member is integrally formed with a shade portion configured to block a portion of light emitted from the semiconductor light emitting device.

### Claim 2 (depends on 1)

The vehicle lamp according to claim 1, wherein:
the shade portion includes a metal portion contiguous to the support member, an undercoat layer formed on the metal portion, and a metal film formed on the undercoat layer.

### Claim 3 (depends on 2)

The vehicle lamp according to claim 2, wherein:
the shade portion extends in a direction intersecting with an optical axis of the vehicle lamp; and
a ridge line, formed from an upward-facing upper face portion of the metal portion of the shade portion to a front-facing front face portion of the metal portion, is formed in a rounded shape with a radius of curvature of from 0.1 mm to 1.0 mm in a cross-section orthogonal to the shade portion extension direction.

### Claim 4 (depends on 2)

The vehicle lamp according to claim 2, wherein:
the shade portion includes:
a first horizontal portion;
a second horizontal portion positioned below the first horizontal portion; and
an inclined portion which connects together the first horizontal portion and the second horizontal portion, and
an upper portion of the metal portion forming a connecting portion between the inclined portion and the second horizontal portion includes a recessed portion indented downward.

### Claim 5 (depends on 2)

The vehicle lamp according to claim 2, wherein the undercoat layer is an ultraviolet curable resin including a photopolymerization initiator.

### Claim 6 (depends on 4)

The vehicle lamp according to claim 4, wherein the undercoat layer is an ultraviolet curable resin including a photopolymerization initiator.

### Claim 7 (depends on 1)

The vehicle lamp according to claim 1, wherein a mold mark is formed to the support member at the periphery of the shade portion.

### Claim 8 (depends on 1)

A method of manufacturing the metal support member of the vehicle lamp of claim 1, comprising:
preparing a plurality of molds so as to form a cavity forming the shape of the support member; and
introducing metal into the cavity and solidifying the metal, and removing shade portion integrally formed to the support member, wherein
the plurality of molds are disposed such that at a parting line of the molds is not positioned at the shade portion.

### Claim 9 (depends on 8)

The manufacturing method according to claim 8, wherein the molds include a round shaped portion with a radius of curvature of from 0.1 mm to 1.0 mm, and the shape of the round shaped portion is transferred to form the shade portion.
