Light-emitting diode lamp
An LED lamp including a lamp housing, an LED light source, a heat sink and a control circuit. The lamp housing has an accommodating space, a plurality of air inlets and a plurality of air outlets, wherein the accommodating space joins an environment through the air inlets and the air outlets. The LED light source and the heat sink are disposed in the accommodating space and the heat sink is connected with the LED light source. The heat sink includes a pedestal and a plurality of heat dissipation fins connected to the pedestal. An air convection channel is located between any two adjacent heat dissipation fins. Air from the environment flows into the accommodating space, passes through the air convection channel, and leaves the accommodating space via the air outlets sequentially. The control circuit is disposed in the accommodating space and connected to the LED light source.
1. A light-emitting diode (LED) lamp, comprising:
a lamp housing having a first cap defining an accommodating space with a first cap sidewall, a plurality of through slots passing through said first cap sidewall, wherein the accommodating space joins an environment through the first cap through slots;
an LED light source disposed in the accommodating space;
a heat sink disposed in the accommodating space and connected to the LED light source, the heat sink comprising a pedestal and a plurality of heat dissipation fins connected to the pedestal, an air convection channel being located between each respective two adjacent heat dissipation fins, wherein the heat dissipation fins are surrounded by the through slots;
a fan disposed in the accommodating space; and
a control circuit disposed in the lamp housing and electrically connected to the LED light source;
wherein the lamp housing further comprises:
a second cap having a plurality of openings passing through a second cap sidewall;
wherein said heat dissipating fins are displaced each from the other and positioned between said through slots of said first cap, each of said through slots being in radial alignment with a respective air convection channel;
wherein the fan and the LED light source are disposed on two opposite sides of the pedestal of the heat sink respectively, and the fan is surrounded by the heat dissipation fins of the heat sink;
wherein the air from the environment is driven by the fan to flow into the accommodating space via the first cap through slots, pass through the air convection channels, the control circuit, and leave the accommodating space via the openings of the second cap sidewall.
2. The LED lamp of claim 1 , wherein the lamp housing comprises:
a lampshade connected to the first cap, wherein the LED light source is disposed in the lampshade;
and
a conductive plug connected to the second cap, wherein the second cap is disposed between the conductive plug and the first cap.
3. The LED lamp of claim 2 , wherein a material of the first cap comprises insulation material.
4. The LED lamp of claim 3 , wherein a material of the first cap comprises zinc oxide doped insulation material.
5. The LED lamp of claim 2 , wherein a material of the second cap comprises insulation material.
6. The LED lamp of claim 5 , wherein a material of the second cap comprises doped zinc oxide insulation material.
7. The LED lamp of claim 2 , wherein the first cap has air inlets, and the second cap has air outlets.
8. The LED lamp of claim 7 wherein each of the air inlets is an opening with or without barricade.
9. The LED lamp of claim 7 , wherein each of the air outlets is an opening with or without barricade.
10. The LED lamp of claim 2 , wherein the first cap has air outlets, and the second cap has air inlets.
11. The LED lamp of claim 10 , wherein each of the air inlets is an opening with or without barricade.
12. The LED lamp of claim 10 , wherein each of the air outlets is an opening with or without barricade.
13. The LED lamp of claim 10 , wherein each of the air outlets is a slot-shaped air outlet, and the slot-shaped air inlets are arranged in grating.
14. The LED lamp of claim 13 , wherein each of the slot-shaped air outlets respectively corresponds to one of the air convection channels of the heat sink.
15. The LED lamp of claim 1 , wherein the LED light source comprises an LED package.
16. The LED lamp of claim 1 , wherein a material of the pedestal is the same as a material of the heat dissipation fins.
17. The LED lamp of claim 1 , wherein a material of the pedestal and a material of the heat dissipation fins are different.
18. The LED lamp of claim 1 , wherein the control circuit comprises a circuit board.
19. The LED lamp of claim 18 , wherein the circuit board comprises at least a through hole.
20. The LED lamp of claim 1 , wherein the heat sink further comprises a first trench, the LED light source is disposed inside the first trench, and the control circuit is located between the fan and the heat sink.
21. The LED lamp of claim 20 , wherein the heat sink further comprises a second trench, the first trench and the second trench are disposed on two opposite sides of the pedestal, respectively, and the control circuit is disposed inside the second trench.