Vehicle lamp

• US 20040136198A1
• Filed: 12/05/2003
• Published: 07/15/2004
• Est. Priority Date: 12/16/2002
• Status: Abandoned Application

• Current Assignee: REBO Lighting & Electronics GmbH (PTC Inc.)
• Original Assignee: REBO Lighting & Electronics GmbH (PTC Inc.)
• Inventors: Brautigam, Markus, Gotthardt, Frank, Wimbert, Frank, Quendt, Peer
• Application Number:
  US10/728,092
• Publication Number:
  US 20040136198A1
• Time in Patent Office: Days
• US Class Current: 362/507
• CPC Class Codes: B60Q 1/2665 on rear-view mirrors lighting devices for vehicle interior on or for rear-view mirrors B60Q3/258
• CPC Class Codes: B60Q 1/2696 Mounting of devices using LEDs
• CPC Class Codes: B60Q 1/34 for indicating change of drive direction B60Q1/22 takes precedence
• CPC Class Codes: B60R 1/1207 with lamps; with turn indicators
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/235 Light guides
• CPC Class Codes: F21S 45/47 Passive cooling, e.g. using fins, thermal conductive elements or openings
• CPC Class Codes: F21V 29/505 of reflectors
• CPC Class Codes: F21V 29/777 the planes containing the fins or blades having directions perpendicular to the light emitting axis
• CPC Class Codes: F21V 29/85 characterised by the material liquid coolants F21V29/56
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G02B 6/0055 Reflecting element, sheet or layer
• CPC Class Codes: G02B 6/0058 varying in density, size, shape or depth along the light guide
• CPC Class Codes: G02B 6/0061 to provide homogeneous light output intensity

Abstract

A vehicle lamp as for a motor vehicle includes a housing with a light exit opening closed by an elongate light cover. At least one light emitting diode is arranged in the housing laterally of the light cover, its main emission direction being substantially parallel to the longitudinal direction of the light cover. Light from the diode in the main emission direction is coupled into a light guide and is at least partially coupled out transversely with respect to said main emission direction towards the light cover. A reflector arrangement which extends at least on the side of the light guide in opposite relationship to the light cover reflects towards the light cover light coupled out therefrom in other directions than towards the light cover. The reflector arrangement includes a good heat-conducting material and is in good heat-conducting relationship with the diode to dissipate heat therefrom.

Claims

1. A vehicle lamp including

a housing having a light exit opening (3)

an elongate light cover (6;

32) closing the light exit opening,

at least one light emitting diode in the housing laterally of the light cover (6;

32), the light emitting diode having a main emission direction substantially parallel to the longitudinal direction of the light cover (6;

32),

a light guide device (8, 8′

;

38, 38′

) positioned for light emitted by the at least one light emitting diode (15;

34, 34′

) in the main emission direction to be coupled into the light guide device and at least partially coupled out transversely with respect to said main emission direction towards the light cover (6;

32), and

a reflector arrangement (20;

42) which extends at least on the side of the light guide device (8, 8′

;

38, 38′

) in opposite relationship to the light cover (6;

32) and reflects towards the light cover (6;

32) light which is coupled out therefrom in other directions than towards the light cover (6;

32), the reflector arrangement (20;

42) including a good heat-conducting material and being in good heat-conducting relationship with the at least one light emitting diode (15;

34, 34′

) to act for same as a cooling means.

2. A vehicle lamp as set forth in claim 1 including

a carrier circuit board (13;

46, 46′

) on which the at least one light emitting diode (15;

34, 34′

) is mounted in good heat-conducting contact therewith, the circuit board in turn being in good heat-conducting contact with the reflector arrangement (20;

42).

3. A vehicle lamp as set forth in claim 1

wherein the reflector arrangement (20;

42) includes a plate with a high mirror finish vapor deposited thereon.

4. A vehicle lamp as set forth in claim 1

wherein the reflector arrangement (20;

42) includes a chromium-plated plastic body.

5. A vehicle lamp as set forth in claim 1

wherein the reflector arrangement is formed by at least one housing wall having an inside surface with a reflective layer thereon.

6. A vehicle lamp as set forth in claim 1

in the form of a side flashing lamp (4) for fitting into the housing of an external rear view mirror (1).

7. A vehicle lamp as set forth in claim 1

in the form of a high-set brake lamp.