Cooling system for hand-held curing light

• US 6,890,175 B2
• Filed: 12/18/2002
• Issued: 05/10/2005
• Est. Priority Date: 12/18/2002
• Status: Expired due to Fees

• Current Assignee: Ultradent Products Incorporated
• Original Assignee: Ultradent Products Incorporated
• Inventors: Fischer, Dan E., McLean, Bruce S.
• Primary Examiner(s): O'Connor, Cary E.
• Application Number:
  US10/325,206
• Publication Number:
  US 20040121281A1
• Time in Patent Office: 874 Days
• Field of Search: 433/29, 362/804, 362/373
• US Class Current: 433/29
• CPC Class Codes: A61C 1/0069 Fluid temperature control
• CPC Class Codes: A61C 19/004 Hand-held apparatus, e.g. guns

Abstract

A cooling system suitable for use with a light curing device includes a forced air unit, such as a diaphragm pump, a fan, or an eccentric cam blower that is disposed remotely from the hand-held portion of the light curing device, such as, within a power plug of the light curing device. Tubing electrically and pneumatically interconnects the power plug and the hand-held portion of the light curing device. Air blown by the forced air unit through the tubing is directed to the hand-held portion of the light curing device about a heat sink that is disposed therein. The circulating air displaces hotter air surrounding the heat sink, thereby lowering the ambient temperature within the light curing device.

Claims

1. A cooling system for a light curing device, wherein the light curing device includes a hand-held portion that is configured to generate and emit light and a power plug that is configured to electrically couple with a remote power supply, and wherein the cooling system is configured to lower the temperature of the hand-held portion of the light curing device, the cooling system comprising:

a forced air unit configured to generate a supply of pressurized air, the forced air unit being disposed within the power plug of the light curing device; and

tubing pneumatically interconnecting the forced air unit with the hand-held portion of the light curing device, such that operation of the forced air unit causes air to circulate through the tubing to the hand-held portion of the light curing device,

wherein air circulating to the hand-held portion of the light curing device through the tubing helps to lower an ambient temperature of the hand-held portion of the light curing device.

2. A cooling system as recited in claim 1, further comprising a heat sink disposed within the hand-held portion of the light curing device, the heat sink being configured to diffuse heat generated by a light source disposed at the hand-held portion of the light curing device.

3. A cooling system as recited in claim 2, the tubing being configured to direct circulated air about the heat sink such that the circulating air is able to lower an ambient temperature surrounding the heat sink.

4. A cooling system as recited in claim 3, the heat sink comprising a solid structure such that circulated air is forced to circulate around an exterior of the heat sink.

5. A cooling system as recited in claim 3, the heat sink comprising a hollow structure having a hollow channel formed therein, and wherein the tubing is configured to direct circulated air through the hollow channel formed in the heat sink.

6. A cooling system as recited in claim 3, the heat sink comprising a hollow structure having a hollow channel and a plurality of sub-channels formed therein, and wherein the tubing is configured to direct circulated air through the hollow channel and the plurality of sub-channels formed in the heat sink.

7. A cooling system as recited in claim 3, the light curing device comprising a light source mounted adjacent the heat sink.

8. A cooling system as recited in claim 1, the forced air unit comprising a diaphragm pump.

9. A cooling system as recited in claim 1, the forced air unit comprising a fan.

10. A cooling system as recited in claim 1, the forced air unit comprising an eccentric cam blower.

11. A cooling system as recited in claim 1, the tubing comprising an air supply line for supplying air to the hand-held portion of the light curing device from the forced air unit and an air exhaust line for directing displaced air away from the hand-held portion of the light curing device.

12. A cooling system as recited in claim 11, the air exhaust line circulating displaced air away from the light curing device.

13. A cooling system as recited in claim 11, the tubing being configured to carry electrical wires from the power plug to the hand-held portion of the light curing device.

14. A cooling system as recited in claim 13, the tubing comprising four-hole tubing.

15. A cooling system as recited in claim 11, the exhaust line comprising vents for discharging displaced air from the vents formed in the tubing.

16. A cooling system as recited in claim 1, the forced air unit being configured to generate a supply of pressurized air having a pressure of between about 2 psi and about 30 psi.

17. A cooling system in combination with a light curing device, the light curing device comprising a hand-held portion that is configured to generate and emit light and a power plug that is configured to electrically couple with a remote power supply, the cooling system being configured to lower the temperature of the hand-held portion of the light curing device, the cooling system comprising:

a diaphragm pump disposed within the power plug of the light curing device, the diaphragm pump being configured to generate a supply of pressurized air;

a heat sink disposed within the hand-held portion of the light curing device, the heat sink being configured to diffuse heat generated by a light source disposed within the hand-held portion of the light curing device; and

tubing pneumatically interconnecting the forced air unit with the hand-held portion of the light curing device, such that operation of the forced air unit causes air to circulate through the tubing to the hand-held portion of the light curing device,

the tubing directing the air to circulate about the heat sink, such that the circulating air helps to lower an ambient temperature surrounding the heat sink within the hand-held portion of the light curing device.

18. A cooling system for a light curing device, wherein the light curing device includes a hand-held portion that is configured to generate and emit light and a power plug that is configured to electrically couple with a remote power supply, and wherein the cooling system is configured to lower the temperature of the hand-held portion of the light curing device, the cooling system comprising:

a forced air unit configured to generate a supply of pressurized air, the forced air unit being disposed remotely from the hand-held portion of the light curing device; and

tubing pneumatically interconnecting the forced air unit with the hand-held portion of the light curing device, such that operation of the forced air unit causes air to circulate through the tubing to the hand-held portion of the light curing device, the tubing comprising an air supply line for supplying air to the hand-held portion of the light curing device from the forced air unit and an air exhaust line for directing displaced air away from the hand-held portion of the light curing device, the exhaust line comprising vents for discharging displaced air from the vents formed in the tubing;

wherein air circulating to the hand-held portion of the light curing device through the tubing helps to lower an ambient temperature of the hand-held portion of the light curing device.