CN201129698Y

CN201129698Y - LED unit with heat dissipation structure and LED wick composed of the same

Info

Publication number: CN201129698Y
Application number: CNU2007201289828U
Authority: CN
Inventors: 王伟新; 贾云鹏
Original assignee: BAOXIN SHIJI ROADLAMP FACTORY BAODING CITY
Current assignee: BAOXIN SHIJI ROADLAMP FACTORY BAODING CITY
Priority date: 2007-08-27
Filing date: 2007-08-27
Publication date: 2008-10-08
Anticipated expiration: 2017-08-27

Abstract

The utility model discloses an LED unit with a heat dissipation structure and an LED wick composed thereof. The LED unit comprises a plurality of evenly distributed LEDs arranged in one column and multiple rows or multiple columns and multiple rows, an LED printed circuit board, a heat dissipation silica gel sheet and a metal Heat sink; the heat dissipation silicone sheet is clamped between the LED printed circuit board and the metal heat sink. The LED wick includes a polygonal prism formed by the above-mentioned three LED units with a heat dissipation structure fixed together by a fixing device and connected together by wires, and a lamp socket of a bulb fixed at the upper or lower end of the polygonal prism. The utility model increases the heat dissipation area of the LED, reduces the overall temperature of the wick, slows down the light decay of the LED, and increases the service life of the LED, which is more than twice the original service life of the LED. Manual soldering points are reduced, ensuring the reliability and stability of the circuit. The LED unit with heat dissipation structure can be formed into various polygonal structures, which ensures people's demand for the shape of the wick, makes the on-site operation easier, and realizes the commercialization of the LED wick.

Description

A kind of with the LED unit of radiator structure and the LED wick of composition thereof

One, technical field:

The utility model belongs to the LED unit of solar energy lamp use and the LED wick of composition thereof.

Two, background technology:

Though compare with traditional bulb, light emitting diode has that volume is light and handy, the life-span is long and can save plurality of advantages such as the energy in a large number, and its brightness ratio conventional lamp is inferior.Therefore, generally in use, the light emitting diode that can use a plurality of light emitting diodes to form usually is connected on the circuit board, and especially low power light emitting diode is to increase its luminosity.Light emitting diode is by the circuit board heat radiation, but because circuit board is with the made single plate body of metal, PCB or ceramic material mostly, therefore, it only has the both ends of the surface heat radiation.Along with increasing of light emitting diode quantity, its heat easily gathers and distributes and do not go out, and diode is with the rising of temperature, its electric current continues to increase, the increasing of electric current makes its temperature raise again, produces vicious circle, the light decay of diode is serious, finally can not use, so the service life of actual diode (LED) is shorter, its service time one is long, and luminous efficiency is also very low.Moreover electronic building bricks such as many electric capacity, resistance that can release heat are also arranged on the circuit board simultaneously, make the coefficient of heat conduction of this circuit board lower.In order to solve the light decay problem of LED light fixture, it is too impatient to wait to solve its heat dissipation problem.

Three, summary of the invention:

The utility model is exactly to solve now with the problems referred to above that exist in the technology, provides that a kind of good heat dissipation effect, light decay are slow, the LED unit of the band radiator structure of diode long service life and the wick of composition thereof.

For addressing the above problem, technical solution of the present utility model is: a kind of LED unit with radiator structure, and it comprises LED, LED printed substrate, thermal grease sheet and the metal fin that a plurality of equally distributed row multirows or multiple row multirow are arranged; Thermal grease sheet clamping is between LED printed substrate and metal fin.

Above-mentioned described LED of the present utility model adopts four pin LED.

Three of the every row of above-mentioned described LED of the present utility model is one group, connects the back and connects a current-limiting resistance, is connected with another group again.

The LED wick that the LED unit of above-mentioned described the utility model band radiator structure is formed, it comprises that the LED unit by above-mentioned described band radiator structure more than three is fixed together by fixture, and the socket of the bulb that is fixed with of the polygon prism that is joined together to form by lead and polygon prism upper end or lower end.

Because the utility model has added thermal grease sheet and metal fin in LED printed substrate back, LED printed substrate, thermal grease sheet and metal fin form an integral heat sink structure, increased the area of dissipation of LED, reduced the bulk temperature of wick, slowed down the light decay of LED, increase the service life of LED, be more than 2 times of original LED service life.And circuit board adopts printed substrate, has reduced manual solder joint, has guaranteed the reliability and stability of circuit.Various polygonized structures can be formed in the LED unit of band radiator structure, have guaranteed the demand of people to the wick shape, adopt the bulb socket to be connected with its control circuit, make execute-in-place easier, have realized the commercialization of LED wick.

Four, description of drawings

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1 is the front view of first kind of embodiment of the utility model LED unit;

Fig. 2 is the left view of first kind of embodiment of the utility model LED unit;

Fig. 3 is the front view of the wick formed of Fig. 1, LED unit shown in Figure 2;

Fig. 4 is the circular fixedly vertical view of aluminium flake of removal of the wick formed of Fig. 1, LED unit shown in Figure 2;

Fig. 5 is the fixing vertical view of aluminium flake of circle of wick among Fig. 3, Fig. 4;

Fig. 6 is the front view of second kind of embodiment of the utility model LED unit;

Fig. 7 is the left view of second kind of embodiment of the utility model LED unit;

Fig. 8 is the front view of the wick formed of Fig. 6, LED unit shown in Figure 7;

Fig. 9 is the circular fixedly vertical view of aluminium flake of removal of the wick formed of Fig. 6, LED unit shown in Figure 7;

Figure 10 is the fixing vertical view of aluminium flake of circle of wick among Fig. 8, Fig. 9;

Figure 11 is the front view of the third embodiment of the utility model LED unit;

Figure 12 is the left view of the third embodiment of the utility model LED unit;

Figure 13 is the front view of the wick formed of Figure 11, LED unit shown in Figure 12;

Figure 14 is the circular fixedly vertical view of aluminium flake of removal of the wick formed of Figure 11, LED unit shown in Figure 12;

Figure 15 is the fixing vertical view of aluminium flake of circle of wick among Figure 13, Figure 14.

Five, the specific embodiment:

As shown in Figure 1 and Figure 2, present embodiment LED unit is made up of four pin LED5, four pin LED printed substrates 4, thermal grease sheet 6 and the metal fin 1 of a plurality of equally distributed two row multirows arrangements.Thermal grease sheet 6 by screw 3 clampings between four pin LED printed substrates 4 and metal fin 1.Three of four pin LED, 5 every row is one group, connects the back and connects a current-limiting resistance 2, is connected with another group again.As Fig. 3, Fig. 4, shown in Figure 5, the pentagon LED wick that present embodiment is made up of Fig. 1,5 LED unit shown in Figure 2.In the clip slot 10 that the circle that one is inserted at the two ends of its 5 LED unit respectively fixedly has on the end face of aluminium flake 7, be fixed together by glue or screw.In order to save material, circular fixedly aluminium flake 7 has groove 11 in the inside of clip slot 10.Fixedly the circle of bulb socket 8 fixedly evenly is embedded with nut 12 in the groove 11 of aluminium flake 7, and nut 12 is positioned on the same circumference.Preset the opening of screw on the socket 8 of bulb, the circle that the socket 8 of bulb is fixed on the lower end by screw 9 is fixedly on the nut 12 of aluminium flake.The socket 8 of bulb also can be fixed on the circle of upper end fixedly on the aluminium flake 7 by screw 9.The LED wick of any limit shape more than the triangle that LED wick of the present utility model is made up of 3 above Fig. 1, LED unit shown in Figure 2.

As Fig. 6, shown in Figure 7, four pin LED5, four pin LED printed substrates 4, thermal grease sheet 6 and metal fin 1 that present embodiment LED unit is arranged by a plurality of equally distributed row multirows are formed.Thermal grease sheet 6 by the screw clamping between four pin LED printed substrates 4 and metal fin 1.Three of four pin LED, 5 every row is one group, connects the back and connects a current-limiting resistance 2, is connected with another group again.As Fig. 8, Fig. 9, shown in Figure 10, the octagon wick that present embodiment is made up of Fig. 6,8 LED unit shown in Figure 7.In the clip slot 10 that the circle that one is inserted at the two ends of its 8 LED unit respectively fixedly has on the end face of aluminium flake, be fixed together by glue or screw.In order to save material, circular fixedly aluminium flake 7 has groove 11 in the inside of clip slot.Fixedly the circle of bulb socket 8 fixedly evenly is embedded with nut 12 in the groove 11 of aluminium flake 7, and nut 12 is positioned on the same circumference.Preset the opening of screw 9 on the socket 8 of bulb, the circle that the socket 8 of bulb is fixed on the lower end by screw 9 is fixedly on the nut 12 of aluminium flake 7.The socket 8 of bulb also can be fixed on the circle of upper end fixedly on the aluminium flake 7 by screw 9.The LED wick of any limit shape more than the triangle that LED wick of the present utility model is made up of 3 above Fig. 1, LED unit shown in Figure 2.

As Figure 11, shown in Figure 12, four pin LED 5, four pin LED printed substrates 4, thermal grease sheet 6 and metal fin 1 that present embodiment LED unit is arranged by a plurality of equally distributed three row multirows are formed.Thermal grease sheet 6 by screw 3 clampings between four pin LED printed substrates 4 and metal fin 1.Three of four pin LED, 5 every row is one group, connects the back and connects a current-limiting resistance 2, is connected with another group again.As Figure 13, Figure 14, shown in Figure 15, the triangle wick that present embodiment is made up of Figure 11,3 LED unit shown in Figure 12.In the clip slot 10 that the circle that one is inserted at the two ends of its 3 LED unit respectively fixedly has on the end face of aluminium flake 7, be fixed together by glue or screw.In order to save material, circular fixedly aluminium flake 7 has groove 11 in the inside of clip slot 10.Fixedly the circle of bulb socket 8 fixedly evenly is embedded with nut 12 in the groove 11 of aluminium flake 7, and nut 12 is positioned on the same circumference.Preset the opening of screw on the socket 8 of bulb, the circle that the socket 8 of bulb is fixed on the lower end by screw 9 is fixedly on the nut 12 of aluminium flake.The socket 8 of bulb also can be fixed on the circle of upper end fixedly on the aluminium flake 7 by screw 9.The LED wick of any limit shape more than the triangle that LED wick of the present utility model is made up of 3 above Fig. 1, LED unit shown in Figure 2.

Claims

1. A LED unit with a heat dissipation structure, which includes a plurality of uniformly distributed LEDs and LED printed circuit boards arranged in multiple rows or multiple rows, and is characterized in that: it also includes heat dissipation silica gel sheets and metal heat sinks, The heat dissipation silicone sheet is clamped between the LED printed circuit board and the metal heat sink.

2. The LED unit with heat dissipation structure according to claim 1, characterized in that: said LED adopts four-pin LED.

3. The LED unit with heat dissipation structure according to claim 1, characterized in that: said LEDs in each column form a group of three, connected to a current-limiting resistor, and then connected to another group.

4. The LED unit with heat dissipation structure according to claim 1, 2 or 3, characterized in that: said LEDs are in two columns and multiple rows.

5. The LED unit with heat dissipation structure according to claim 1, 2 or 3, characterized in that: said LEDs are in three columns and multiple rows.

6. The LED wick composed of the LED unit with heat dissipation structure described in claim 1 or 2 or 3 or 4 or 5 is characterized in that: it includes more than three LED units with heat dissipation structure by a fixing device A polygonal prism that is fixed together and connected together by wires, and a lamp socket of a light bulb fixed at the upper or lower end of the polygonal prism.

7. The LED wick composed of LED units with heat dissipation structure according to claim 6, characterized in that: said fixing device is a circular fixed aluminum sheet (7), and the end face of the circular fixed aluminum sheet (7) Have clip groove (10), have groove (11) in the inside of clip groove (10).

8. The LED wick composed of LED units with a heat dissipation structure according to claim 6, characterized in that: the groove (11) of the circular fixed aluminum sheet (7) of the fixed bulb socket (8) Nuts (12) are evenly embedded inside, and the nuts (12) are located on the same circumference; openings for screws are preset on the lamp socket (8) of the bulb, and the lamp socket (8) of the bulb is fixed on the circle at the lower end by screws (9). On the nut (12) of shaped fixed aluminum sheet.

9. The LED wick composed of LED units with heat dissipation structure according to claim 8, characterized in that: the socket (8) of the light bulb is fixed on the upper circular fixed aluminum sheet (7) by screws (9) )superior.