Heat radiating device for lamp

• US 20080212333A1
• Filed: 03/01/2007
• Published: 09/04/2008
• Est. Priority Date: 03/01/2007
• Status: Abandoned Application

• Current Assignee: Bor-Jang Chen
• Original Assignee: Bor-Jang Chen
• Inventors: Chen, Bor-Jang
• Application Number:
  US11/712,541
• Publication Number:
  US 20080212333A1
• Time in Patent Office: Days
• US Class Current: 362/373
• CPC Class Codes: F21V 29/00 Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems lighting fixtures combined with outlets for air-treatment systems F24F13/078
• CPC Class Codes: F21V 29/677 the fans being used for discharging
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21W 2131/10 Outdoor lighting
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

The present invention relates to an improved heat radiating device for lamp, comprising an exhaust space configured around the periphery of lamp stand, an exhaust fan disposed at the top of exhaust space, and simultaneously a radiator and a plurality of heat conductors at the back of the printed circuit board of a light emitting diode (LED) lamp set where the heat conductors extend to the peripheral inner wall of lamp stand in the exhaust space. Through such a radiating device, high heat generated by the LED lamp set can be dissipated through the radiator and through the plurality of heat conductors to the periphery of lamp stand in the exhaust space, thereby enlarging the heat dissipation area. In addition, through the exhaust fan disposed at the top of the exhaust space, ventilation can take place continuously to let the heat in the exhaust space be vented rapidly, thereby achieving fast heat dissipation and prolonging the service life of LED lamp.

Claims

1. An improved heat radiating device for lamp, comprising:

a lamp stand in generally concave shape and configured with a large perforated hole at its bottom;

a light emitting diode (LED) lamp set mounted at the bottom of lamp stand and having a printed circuit board and a plurality of light emitting diodes attached to the printed circuit board, the light emitting diodes being corresponding exactly to the position of perforated hole of lamp stand;

a radiator arranged at the back of printed circuit board of LED lamp set and inside the lamp stand, and having a plurality of radiator fins;

a first exhaust fan disposed at one side of radiator; and

a power supply arranged inside the lamp stand and above the radiator;

characterized in which;

the peripheral inner wall of lamp stand is provided with a plurality of fin-shaped heat sinks and a plurality of through-going guide holes near the bottom periphery;

the back of the printed circuit board of LED lamp set is disposed with the heat absorbing ends of a plurality of heat conductors, the respective heat transmitting ends of heat conductors being extendingly disposed on the peripheral inner wall of lamp stand;

an inner shield is disposed inside the lamp stand for covering the LED lamp set, radiator, first exhaust fan, and power supply, and forming a first exhaust space with the periphery of lamp stand that contains the heat transmitting ends of heat conductors, the first exhaust space communicating with the through-going guide holes at the bottom periphery of lamp stand;

an outer shield mounted at the top of lamp stand and forming a second exhaust space with the inner shield, the second exhaust space communicating with the first exhaust space;

a second exhaust fan is installed at the top of outer shield and able to vent the air in first exhaust space and second exhaust space.

2. An improved heat radiating device as claimed in claim 1, wherein said heat absorbing ends and heat transmitting ends of heat conductor are preferably evenly distributed at the back of printed circuit board of LED lamp set and the periphery of lamp stand.

3. An improved heat radiating device for lamp, comprising:

a lamp stand in generally concave shape and configured with a large perforated hole at its bottom;

a light emitting diode (LED) lamp set mounted at the bottom of lamp stand and having a printed circuit board and a plurality of light emitting diodes attached to the printed circuit board, the light emitting diodes being corresponding exactly to the position of perforated hole of lamp stand;

a radiator arranged at the back of printed circuit board of LED lamp set and inside the lamp stand, and having a plurality of radiator fins;

a first exhaust fan disposed at one side of radiator; and

a power supply arranged inside the lamp stand and above the radiator;

characterized in which;

the peripheral inner wall of lamp stand is provided with a plurality of fin-shaped heat sinks and a plurality of through-going guide holes near the bottom periphery;

the back of the LED lamp set near the bottom of radiator is disposed with the heat absorbing ends of a plurality of heat conductors, the respective heat transmitting ends of heat conductors being extendingly disposed on the peripheral inner wall of lamp stand;

an inner shield is disposed inside the lamp stand for covering the LED lamp set, radiator, first exhaust fan, and power supply, and forming a first exhaust space with the periphery of lamp stand that contains the heat transmitting ends of heat conductors, the first exhaust space communicating with the through-going guide holes at the bottom periphery of lamp stand;

an outer shield mounted at the top of lamp stand and forming a second exhaust space with the inner shield, the second exhaust space communicating with the first exhaust space;

a second exhaust fan is installed at the top of outer shield and able to vent the air in first exhaust space and second exhaust space.

4. An improved heat radiating device as claimed in claim 3, wherein said heat absorbing ends and heat transmitting ends of heat conductor are preferably evenly distributed at the back of LED lamp set near the bottom of radiator and the periphery of lamp stand.