Light emitting diode lamp

• US 4,935,665 A
• Filed: 11/07/1988
• Issued: 06/19/1990
• Est. Priority Date: 12/24/1987
• Status: Expired due to Term

• Current Assignee: Mitsubishi Cable Industries Limited (Mitsubishi Materials Corporation)
• Original Assignee: Mitsubishi Cable Industries Limited (Mitsubishi Materials Corporation)
• Inventors: Murata, Hroaki
• Primary Examiner(s): Wieder, Kenneth
• Application Number:
  US07/267,851
• Time in Patent Office: 589 Days
• Field of Search: 313/113, 313/498, 313/499, 313/500, 313/512, 362/296, 362/307, 362/341
• US Class Current: 313/500
• CPC Class Codes: F21S 41/37 characterised by their material, surface treatment or coatings
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/40 characterised by the combination of reflectors and refractors
• CPC Class Codes: F21V 7/22 characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48227 connecting the wire to a bond pad of the item
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/01014 Silicon [Si]
• CPC Class Codes: H01L 2924/01078 Platinum [Pt]
• CPC Class Codes: H01L 2924/01079 Gold [Au]
• CPC Class Codes: H01L 2924/12041 LED
• CPC Class Codes: H01L 33/58 Optical field-shaping elements
• CPC Class Codes: H01L 33/60 Reflective elements
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A light emitting diode lamp comprises an insulated metallic board having a plurality of hollows thereon each of which has a light emitting diode mounted on the bottom thereof and a light-reflecting surface on the side wall thereof. A lens plate collects direct light from the light emitting diode and light reflected by the reflecting surfaces of each of the hollows. The lamp is suited as an automobile lamp, especially as a high mounted stop lamp.

Claims

1. A light emitting diode lamp comprising:

an insulated metallic board having a plurality of hollows thereon, each of said hollows has a light emitting diode mounted on a bottom surface thereof and each of said hollows has a light-reflecting surface on a side wall thereof; and

a lens plate collects direct light from each light emitting diode and collects light reflected by the light-reflecting surfaces of each of the hollows.

2. A light emitting diode lamp as defined in claim 1, wherein the hollows on the insulated metallic board are formed by drawing.

3. A light emitting diode lamp as defined in claim 2, wherein the insulated metallic board has other hollows on its surface, the hollows being formed by drawing and accomodating bonding wires.

4. A light emitting diode lamp as defined in claim 1, wherein at least one side of the insulated metallic board is bent.

5. A light emitting diode lamp as defined in claim 4, wherein the insulated metallic board has at least two surface regions, and a group of light emitting diodes and a group of non-light emittable parts are separately mounted on each surface region, respectively.

6. A light emitting diode lamp as defined in claim 1, wherein the insulated metallic board and/or the lens plate are provided with guide pins and/or guide holes, and the insulated metallic board and lens plate are mutually connected by the guide pins and guide holes.

7. A light emitting diode lamp as defined in claim 1, wherein the lens plate is integrated with a transparent organic polymer layer masking a surface of the insulated metallic board, and said lens plate is formed by a transparent organic polymer, an integrated body of the lens plate and the transparent organic polymer layer is set on a surface of the insulated metallic board.