Heat dissipating LED signal lamp source structure

• US 7,396,146 B2
• Filed: 08/09/2006
• Issued: 07/08/2008
• Est. Priority Date: 08/09/2006
• Status: Expired due to Fees

• Current Assignee: Pyroswift Holding Co., Limited
• Original Assignee: Augux Co., Ltd.
• Inventors: Wang, Pei-Choa
• Primary Examiner(s): Ward; John A
• Application Number:
  US11/463,456
• Publication Number:
  US 20080037255A1
• Time in Patent Office: 699 Days
• Field of Search: 362/96, 362/234, 362/294, 362/373, 362/800, 313/11
• US Class Current: 362/294
• CPC Class Codes: F21K 9/233 specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
• CPC Class Codes: F21V 23/002 Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
• CPC Class Codes: F21V 29/505 of reflectors
• CPC Class Codes: F21V 29/773 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A heat dissipating LED signal lamp emitting structure includes an isothermal board, a light emitting unit on the isothermal board, a heat conducting cylinder connected to the bottom of the isothermal board, a heat dissipating body around the periphery of the heat conducting cylinder and comprised of heat sinks, a circular cover body above the isothermal board for covering the isothermal board, a reflecting groove at the center of the cover body for passing through the light emitting unit, and a transparent lid on the cover body for covering the light emitting unit. With the heat dissipating effect of the heat dissipating body, the operating heat produced by the light emitting unit can be dissipated to the outside. The invention not only uses a single light emitting unit as a signal lamp emitting source, but also enhances the light emitting efficiency and the life expectancy of the light emitting unit.

Claims

1. A heat dissipating LED signal lamp emitting structure, comprising:

an isothermal board, made of a highly thermal conducting material;

a light emitting diode, attached on an upper side of the isothermal board;

a heat conducting cylinder, being a hollow body with an outer diameter not larger than that of the isothermal board, axially attached on a lower side of the isothermal board, having an electrode plug disposed on a lower distal surface thereof and electrically coupled to the light emitting unit;

a heat dissipating body, having a receiving hole for receiving the heat conducting cylinder;

a cover body, coupled to the upper side of the isothermal board, and having a reflecting groove for accommodating the light emitting unit; and

a lid, disposed on the cover body, for covering the light emitting unit inside the lid.

2. The heat dissipating LED signal lamp emitting structure of claim 1, wherein the isothermal board further includes a through hole.

3. The heat dissipating LED signal lamp emitting structure of claim 1, wherein the heat conducting cylinder has a circular protruding board disposed on an cylindrical surface thereof against the heat dissipating body.

4. The heat dissipating LED signal lamp emitting structure of claim 1, wherein the heat dissipating body includes a plurality of heat sink fins.

5. The heat dissipating LED signal lamp emitting structure of claim 1, wherein the heat dissipating body forms a sunken space at top thereof, for accommodating the isothermal board to contact each other.

6. The heat dissipating LE 5 D signal lamp emitting structure of claim 1, wherein the reflecting groove further has a reflecting surface disposed at a periphery of the reflecting groove.