# US 5,707,132 A · Vehicular lamp and machine and method for moulding the same

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- Number: US 5,707,132 A
- Document ID: US5707132A
- Status: Granted
- Kind: A
- Application number: 08/421,264
- Filed: 1995-04-13
- Granted: 1998-01-13
- Earliest claimed: 1994-04-20
- Assignees: Koito Manufacturing Co., Ltd.
- Inventors: Seiichi Ooki; Makoto Sano
- Web page: https://patentgrep.com/patent/US5707132A

## CPC

- B29C 45/0025: {Preventing defects on the moulded article, e.g. weld lines, shrinkage marks (preventing defects on the preformed parts or layers B29C45/14836)}
- B60Q 1/2607: {comprising at least two indicating lamps}
- B29C 2045/0027: {Gate or gate mark locations}
- B29L 2011/0016: {Lenses}
- B29L 2031/30: Vehicles, e.g. ships or aircraft, or body parts thereof {(vanes or blades B29L2031/08, air bags B29L2022/027)}
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

## Abstract

A vehicular lamp including a front lens formed by resin molding having a projecting part a thickness of which is larger than that of the other parts of the lens. A clearance lamp is integrally molded with a front lens including a side turn signal lens part projecting toward a front surface of the front lens. The side turn signal lens part projects like a tricornered roof inside which a light bulb for the side turn signal lamp is disposed closely adjacent to the lens. The thickness of the side turn signal lens part is made thicker than the other parts of the front lens.

## Claims

### Claim 1

A vehicular lamp, comprising:
at least one light bulb;
a lamp body having a front opening and at least one through-hole with which said bulb is engaged; and
a front lens mounted on said front opening of said lamp body, said lamp body comprising a first lens part and a second lens part projecting from said first lens part, a thickness of said second lens part being thicker than that of said first lens part so as to provide at least one of a mechanical, optical or astethic advantage.

### Claim 2 (depends on 1)

The vehicular lamp according to claim 1, wherein said first lens part is a clearance lens part and said second lens part is a side turn signal lens part of a curved clearance lamp, and said second lens part being disposed at a side of said first lens part, said second lens part projecting toward a front face of said first lens part.

### Claim 3 (depends on 2)

The vehicular lamp according to claim 2, wherein said side turn signal lens part projects like a tricornered roof, and one of said light bulb is disposed inside said projecting lens part closely adjacent thereto.

### Claim 4 (depends on 1)

The vehicular lamp according to claim 1, wherein said front lens is formed of a transparent resin.

### Claim 5 (depends on 1)

The vehicular lamp according to claim 1, wherein said front lens comprises lens steps formed on an inner surface of said front lens.

### Claim 6 (depends on 5)

The vehicular lamp according to claim 5, wherein each of said lens steps has a hemispherical shape.

### Claim 7 (depends on 1)

The vehicular lamp according to claim 1, wherein the thickness of said second lens part is 10 to 20% thicker than that of said first lens part.

### Claim 8 (depends on 7)

The vehicular lamp according to claim 7, wherein the thickness of said second lens part is 1 to 2 mm thicker than that of said first lens part.

### Claim 9 (depends on 1)

The vehicular lamp according to claim 1, wherein said second lens part comprises rounded corners, and each boundary between said first lens part and said second lens part has a curved shape so that said first and second lens parts are connected to each other smoothly and continuously.