ILLUMINATING APPARATUS WITH EFFICIENT HEAT DISSIPATION CAPABILITY

• US 20090067182A1
• Filed: 03/10/2008
• Published: 03/12/2009
• Est. Priority Date: 09/11/2007
• Status: Active Grant

• Current Assignee: Foxsemicon Integrated Technology Incorporated
• Original Assignee: Foxsemicon Integrated Technology Incorporated
• Inventors: JIANG, WEN-JANG, HSU, HUNG-KUANG
• Granted Patent: US 7,682,054 B2
• Time in Patent Office: Days
• US Class Current: 362/373
• CPC Class Codes: F21S 6/003 for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
• CPC Class Codes: F21V 29/505 of reflectors
• CPC Class Codes: F21V 29/60 characterised by the use of a forced flow of gas, e.g. air
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

An illuminating apparatus (20) includes a lamp cover (200), a solid-state light emitting component (23) and an air tank (24). The lamp cover has a first end and an opposite second end. The lamp cover tapers from the first end to the second end. The lamp cover defines therein an air channel (25) running from the first end to the second end of the lamp cover. The solid-state light emitting component is disposed in the lamp cover at the second end thereof. The air tank has a chamber (240) therein in thermally contact with the solid-state light emitting component. The air tank has a plurality of first and second air vents (244, 245). The chamber is communicated with the air channel via the first air vents, and is communicated with an ambient environment via the second air vents. The first and second air vents are disposed at different altitudes.

Claims

1. An illuminating apparatus comprising:

a lamp cover having a first end and an opposite second end, the lamp cover tapering from the first end to the second end, the lamp cover defining at least one air channel therein, the at least one channel running from the first end to the second end of the lamp cover;

at least one solid-state light emitting component disposed in the lamp cover at the second end thereof; and

an air tank having a chamber therein, the air tank in thermally contact with the at least one solid-state light emitting component, the air tank having at least one first air vent and a second air vent, the chamber in communication with the at least one air channel via the at least one first air vent, the chamber in communication with an ambient environment via the at least one second air vent, the at least one first air vent and the at least one second air vent configured for being disposed at different altitudes.

2. The illuminating apparatus as claimed in claim 1, wherein the lamp cover includes an interior shell and an exterior shell surrounding the interior shell, the interior shell and the exterior shell cooperatively defining the air channel therebetween.

3. The illuminating apparatus as claimed in claim 2, wherein the exterior shell has a truncated conical shape, the exterior shell defining an opening at the first end of the lamp cover, the exterior shell being connected with the air tank at the second end of the lamp cover.

4. The illuminating apparatus as claimed in claim 1, wherein the air tank includes a top wall, a bottom wall at apposite end of the air tank and a side wall connecting the top wall with the bottom wall, the air tank being in thermally contact with the at least one solid-state light emitting component via the top wall.

5. The illuminating apparatus as claimed in claim 4, wherein the at least one first air vent is defined at an intersection between the top wall and the side wall, and the at least one second air vent is defined at an intersection between the bottom wall and the side wall.

6. The illuminating apparatus as claimed in claim 1, wherein the lamp cover includes an interior shell, an exterior shell surrounding the interior shell, and at least one hollow pipe disposed between the exterior shell and the interior shell for severing as the at least one air channel.

7. The illuminating apparatus as claimed in claim 1, further comprising a hollow supporting pole and a base, one end of the supporting pole being connected with the base and the other end of the supporting pole being connected to the air tank, the chamber of the air tank in communication with the hollow supporting pole, at least one through hole being defined in the hollow supporting pole or the base.

8. The illuminating apparatus as claimed in claim 1, wherein the lamp cover includes a shell and at least one hollow pipe disposed on the outer surface of the shell for severing as the at least one air channel.

9. The illuminating apparatus as claimed in claim 1, wherein the lamp cover includes a shell and a reflective film formed on an inner surface of the shell.

10. The illuminating apparatus as claimed in claim 1, wherein the air tank includes a light-permeable top wall and a side wall connected with the top wall, the air tank being disposed in the lamp cover at the second end thereof, an opening defined in a bottom of the air tank, the at least one solid-state light emitting component being received in the opening and protruding into the chamber of the air tank, the side wall in thermally contact with the shell.

11. The illuminating apparatus as claimed in claim 10, wherein the at least one first air vent is spaced apart from the at least one solid-state light emitting component and the at least one second air vent is located adjacent to the at least one solid-state light emitting component, the at least one first air vent and the at least one second air vent in communication with the at least one air channel.

12. The illuminating apparatus as claimed in claim 11, wherein a filtering unit is disposed at the at least one first air vent or the at least one second air vent configured for filtering air.

13. The illuminating apparatus as claimed in claim 11, wherein at least one air intake hole is defined under the air tank to communicate with the at least one second air vent.

14. The illuminating apparatus as claimed in claim 2, wherein the interior shell is spaced from the exterior shell by at least one supporting rib disposed in a space formed between the interior shell and the exterior shell.

15. The illuminating apparatus as claimed in claim 1, wherein a diameter of the at least one first air vent substantially is equal to that of the at least one second air vent.