Thermal dispersing structure for LED or SMD LED lights

• US 7,963,686 B2
• Filed: 07/15/2009
• Issued: 06/21/2011
• Est. Priority Date: 07/15/2009
• Status: Expired due to Fees

• Current Assignee: Wen-Sung Hu
• Original Assignee: Wen-Sung Hu
• Inventors: Hu, Wen-Sung
• Primary Examiner(s): TSO, LAURA K
• Application Number:
  US12/503,270
• Publication Number:
  US 20110013399A1
• Time in Patent Office: 706 Days
• Field of Search: 362/543, 362/544, 362/545, 362/547, 362/249.02, 362/311.02, 362/294, 362/373
• US Class Current: 362/547
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21K 9/233 specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
• CPC Class Codes: F21K 9/27 Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
• CPC Class Codes: F21K 9/69 Details of refractors forming part of the light source
• CPC Class Codes: F21S 41/28 Cover glass
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 5/007 Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane combination of two or more refractors F21V5/008
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2113/00 Combination of light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A thermal dispersing structure for LED or SMD LED lights is to mount a lamp base on a light head. The lamp base is funnel-shaped and has an interior annular cutout near its top edge. A substrate engages the annular cutout to carry one or multiple LED or SMD LED units at a center or other proper locations. Moreover, a rim is formed on the substrate around the LED or SMD LED units. The substrate has multiple holes defined corresponding to thermal conducting bases under the LED or SMD LED units and defined slightly larger or smaller than the LED thermal conducting base. Additionally, a thermal dispersing body is secured under the substrate and has multiple posts corresponding to the holes of the thermal conducting bases. Each post penetrates the substrate to snugly engage the thermal conducting base so that thermal dispersing efficiency is improved.

Claims

1. A thermal dispersing structure for LED or SMD LED lights comprising:

a lamp head;

a lamp base being a funnel shape mounted on the lamp head and having an enlarged top edge with an annular cutout defined near the enlarged top edge;

a substrate engaged the annular cutout and having at least one LED or SMD LED units each with at least one thermal conducting base and at least one hole defined on the substrate to receive the at least one thermal conducting base correspondingly; and

a thermal dispersing body attached under the substrate and having at least one post penetrating a corresponding one of the at least one hole to engage a corresponding one of the at least one thermal conducting base.

2. The thermal dispersing structure as claimed in claim 1, wherein each of the at least one post has a height even or higher than a thickness of the substrate and has an outer diameter slightly smaller than an inner diameter of the corresponding one of the at least one hole of the substrate to snugly engage with the a corresponding one of the at least one of the thermal conducting base.

3. The thermal dispersing structure as claimed in claim 2, wherein the thermal dispersing body is coated with thermal conducting glue on periphery.

4. The thermal dispersing structure as claimed in claim 1, wherein the thermal dispersing body further has an engaging hole;

and

a cross-shaped thermal conducting post engaging a corresponding one of the at least one hole of the substrate and the engaging hole of the thermal dispersing body respectively.

5. The thermal dispersing structure as claimed in claim 4, wherein the thermal dispersing body, the thermal conducting post, or the post or the metal lamp base are made of thermal dispersing material such as aluminum, copper or nano-ferric ceramic in one-piece or in a sleeving piece.

6. The thermal dispersing structure as claimed in claim 1, wherein the thermal dispersing structure is constructed to serve a long-distance a projecting lamp, an auxiliary projecting lamp, a fog lamp, a day-light signal lamp, a combination of car head lamp, a dual-way projecting lamp, a LED road lamp combination or a decorative projecting LED lamp.