CN100470941C - Electrical connector - Google Patents

Abstract

The present invention relates to an electric connector for bearing at least one light emitting module set, which comprises: a base which is provided with at least one receiving space for receiving the light emitting module set; at least two terminators which are electrically contacted with the light emitting module set; at least one heat conduction device for conducting the heat from the light emitting module set; and at least one cover which is arranged above the light emitting module set for adjusting ray of the light emitting module set. The present invention can realize the connection of the LED light emitting module set and the circuit board. When the LED light emitting module set is damaged for change, only the LED light emitting module set needs to be changed; thereby saving cost and being convenient to change. The heat conduction device is arranged on the electric connector to conduct the heat emitted from the LED light emitting module set fast. In addition, the cover is arranged on the electric connector so that the ray direction or color of the LED light emitting module set can be adjusted by the cover to satisfy requirements of ray direction for shined objects.

Description

Electric connector

[technical field]

The present invention relates to a kind of electric connector, refer to the LED illuminating module is electrically connected to the electric connector of circuit board especially.

[scape technology]

So-called LED (Light Emitting Diode, Light-Emitting Diode) illuminating module is a kind ofly to be made of semi-conducting material, utilizes the electronics in the semiconductor chip to send photon with combining of electric hole, the light-emitting component of generation different frequency.

Shown in Figure 1 is a kind of common lower powered LED illuminating module 10, because this LED illuminating module power is lower, can only be as indicator light, the backlight of button or LCD screen, the switch indicator light, outdoor demonstration, the mark display lamp, occasions such as replacement for small incandescent lamp bulb, and a plurality of LED illuminating module 10 are weldingly fixed on the circuit board simultaneously, every single to light (forward conducting) electric current many between 5mA～30mA, be generally 20mA, and directly be weldingly fixed on the FR4 printed circuit board (PCB) (epoxy plate) 20 by scolder 30, this LED illuminating module 10 its costs are lower, though also be not easy generally speaking to damage, if but after 10 damages of LED illuminating module, LED illuminating module 10 need be changed together with circuit board, can be caused unnecessary waste.

And present high power type LED mainly is used in flashlight, the advertising signboard of LCD TV backlight source, automotive lighting, high light, the occasions such as photoflash lamp, illumination or general light source of mobile phone.Send into regard to the electric current that has 330mA～1A for every single, " every electricity consumption " increased by ten times, even tens of times, so the caloric value of high-capacity LED is tens of times of low-power LED, and can rise along with temperature, and the problem that luminous power increases appears, temperature is linear to the influence of brightness, but the influence to the life-span just is index, be as the criterion to connect surface temperature equally, use below 50 ℃ then that LED has nearly 20,000 hours life-span if remain on always, 75 ℃ then only remain 10,000 hour, 100 ℃ remained 5,000 hours, 125 ℃ surplus 2,000 hour, 150 ℃ remained 1,000 hour.Temperature light just shortened 1/4 times 5,000 hours useful life into from 50 ℃ of 100 ℃ of becoming 2 times from 20,000 hours, injury greatly, so on can the exploitation of the high encapsulating material of heat resistance, what just show relatively be extremely important.

Figure 2 shows that existing a plurality of LED illuminating module 10 are weldingly fixed on the circuit board 20, wherein, each LED illuminating module 10 is by the metal heat-conducting body 15 that LED encapsulates the heat that LED gives out to be passed to circuit board 20 via scolder or heat-conducting medium, circuit board is by heat-conducting medium, and the fin 41 that is transmitted to heat radiation module 40 at last dispels the heat.In order to strengthen the heat radiation of LED, the FR4 printed circuit board (PCB) (epoxy plate) in past has not applied and has dealt with, and therefore, circuit board 20 is the printed circuit board (PCB) of tool metallic core, is called aluminum bronze substrate (MCPCB).The heat conduction efficiency of aluminum bronze substrate is higher than traditional F R4PCB, reach 1W/m.K～2.2W/m.K, though aluminum bronze substrate MCPCB is than FR4 circuit board excellent in heat dissipation effect, but the dielectric layer of aluminum bronze substrate MCPCB does not have very good pyroconductivity, identical with the FR4 circuit board substantially, 0.3W/m.K only, also the characteristic because of insulating barrier makes its heat conduction be subjected to some restrictions, becomes the conduction bottleneck between radiating block and metal core core.

At first, because high-power LED illuminating module can produce more heat transfer, the long-term damage parts that is easy to make the LED illuminating module down of using, present a plurality of LED illuminating module directly is welded on the circuit board of a MCPCB together, damage as having only one of them or several LED illuminating module, and other LED illuminating module all stands intact, but need connection circuit plate and all LED illuminating module to change together, replacement cost is very high like this, and a lot of intact LED illuminating module can not be used again.

Secondly, though that the heat conduction efficiency of the circuit board of MCP CB is higher than traditional FR4 circuit board is better, the dielectric layer of the circuit board of MCPCB does not have very good pyroconductivity.

Therefore, be necessary to increase a kind of device, make the LED illuminating module need not directly to be welded on the circuit board, be convenient to change, when keeping in repair, can adjust the radiation direction or the color of LED illuminating module again, and have LED concurrently and can dispel the heat preferably by this device.Once more, high-power LED illuminating module is usually used in the occasion of various different light rays, and existing can only be with a plurality of LED illuminating module in parallel or be connected on the circuit board, obtaining stronger light, but existing LED illuminating module can not be adjusted the direction of transfer or the color of light.

[summary of the invention]

The object of the present invention is to provide a kind of LED of being convenient for changing illuminating module, can adjust the radiation direction of LED illuminating module or the electric connector of color simultaneously again.

Electric connector of the present invention is used to accept at least one illuminating module, comprising: a pedestal, be provided with at least one accommodation space, and described illuminating module is placed in this accommodation space; At least two-terminal forms electrical the contact with described illuminating module; At least one heat-transfer device is in order to conduct the heat energy of described illuminating module; At least one cover body is located at the top of described illuminating module, in order to adjust the light of illuminating module.

Electric connector of the present invention can be accepted the LED illuminating module, can realize being connected between LED illuminating module and the circuit board, when the LED illuminating module needs to change because of damaging, only need to change the LED illuminating module, and need not to change together circuit board and heat radiation module, thus cost-saved, and be convenient for changing; And on electric connector, be provided with heat-transfer device, the heat that heat-transfer device can give out the LED illuminating module efficiently conducts, and the heat that the LED illuminating module can not distributed directly is transferred on the circuit board, and the pyroconductivity of the dielectric layer of circuit board is bad, and incurs loss through delay the heat radiation of LED illuminating module; Moreover, on electric connector, be provided with cover body, thereby adjust the radiation direction or the color of LED illuminating module, with the radiation direction that satisfies irradiated object or the demand of color by this cover body.

[description of drawings]

Fig. 1 is that existing LED illuminating module is welded on the schematic diagram on the circuit board;

Fig. 2 is that existing another kind of LED illuminating module is welded on the schematic diagram on the circuit board;

Fig. 3 is the schematic diagram of electric connector of the present invention;

Fig. 4 is the stereogram of LED illuminating module;

Fig. 5 is the cutaway view of LED illuminating module shown in Figure 4;

Fig. 6 is the combination schematic diagram for electric connector shown in Figure 3 and LED illuminating module;

Fig. 7 is the electric connector of second embodiment of the invention and the combination schematic diagram of LED illuminating module;

Fig. 8 is the electric connector of third embodiment of the invention and the combination schematic diagram of LED illuminating module;

Fig. 9 is the electric connector of fourth embodiment of the invention and the combination schematic diagram of LED illuminating module;

Figure 10 is the electric connector of fifth embodiment of the invention and the combination schematic diagram of LED illuminating module.

[figure number explanation]

10 electric connectors

11 pedestals, 12 accommodation spaces

13 heat-transfer devices, 14,15 first, second terminals

141,151 first, second holding parts 142,152 first, second weld parts

143,153 first, second contact site 174 rolled-up stocks

50 heat-conducting mediums

20 LED illuminating module

21 light-emitting components, 22 crystal 2s 2

23 insulating base frames, 24,25 first, second conductive regions

30 circuit boards, 40 heat radiation modules

[concrete Implementation Modes]

The invention will be further described below in conjunction with the drawings and specific embodiments.

See also the schematic diagram of Fig. 3 to Fig. 6 for first embodiment of the invention, electric connector 10 of the present invention is used to accept at least one or a plurality of LED illuminating module 20, and each the LED illuminating module 20 that will accept simultaneously is electrically connected to circuit board 30, this circuit board 30 is a heat conductivility aluminum bronze substrate (MCPCB) preferably, and by the fin 41 of heat radiation module 40 heat of LED illuminating module 20 is distributed.

See also Fig. 4 and Fig. 5, Fig. 4 and Fig. 5 are a kind of common high-power LED illuminating module 20, comprising: crystal 22, the insulating base frame 23 of encapsulating light emitting element 21 and be installed in the insulating base frame 23 and extend insulating base 23 outer two first conductive regions 24 and two second conductive regions 25.

Crystal 22 is made by the materials such as plastics, glass or pottery of light-permeable, the light that light-emitting component 21 is launched shines on the object that needs illumination by crystal 22, crystal 22 is installed with in insulating base frame 23, and insulating base frame 23 roughly rectangular (insulating base frame 23 also can be hexagon or other shape certainly), and in insulating base frame 23, be provided with heat dissipation element 26, these heat dissipation element 26 upper ends are facing to light-emitting component 21, insulating base frame 23 is extended in the lower end, is transferred on other object by heat dissipation element 26 with the heat that light-emitting component 21 is given out.

Described two first conductive regions 24 and two second conductive regions 25 are distinguished anodal conductive connecting pin and negative pole conductive connecting pin, wherein a conductive connecting pin is anodal conductive connecting pin, another conductive connecting pin is the negative pole conductive connecting pin, and described conductive region 24,25 extends respectively and is provided with out first, second contact feet 241,251.

See also Fig. 6, please consult Fig. 3 simultaneously, Fig. 6 is the schematic diagram of electric connector 10 of the present invention, and described electric connector 10 comprises: a pedestal 11, this pedestal 11 are provided with an accommodation space 12, and described LED illuminating module 20 is placed in this accommodation space 12.Described electric connector 10 also is provided with a heat-transfer device 13 and is positioned at two the first terminals 14 and two second terminals 15 at heat-transfer device 13 two ends, and first, second terminal 14,15 is corresponding with accommodation space 12, and heat-transfer device 13 is also corresponding with accommodation space 12.

Described heat-transfer device 13 is made by metal material, be used to conduct the heat that the light-emitting component 21 of LED illuminating module 20 is produced, heat-transfer device 13 is placed in the groove 121 of accommodation space 12, this heat-transfer device 13 also extends the lower surface of pedestal 11, and heat-transfer device 13 to small part is revealed in the outer surface of pedestal 11, and exposed portions serve can contact with other element.

As Fig. 3, described heat-transfer device 13 is positioned at outside the light transmission range that the light-emitting component 21 of described LED illuminating module 20 penetrates, and described heat-transfer device 13 conducts mutually with the heat dissipation element 26 of LED illuminating module 20, conducts by heat-transfer device 13 with the heat that LED illuminating module 20 is distributed.

The described the first terminal 14 and second terminal 15 are installed with in the pedestal 11, and the described the first terminal 14 and second terminal 15 are positioned at the both sides of heat-transfer device 13, described first, second terminal 14,15 is respectively equipped with and comprises first, second holding parts 141,151 that is fixedly arranged in the pedestal 11, and first, second weld part 142,152 and first, second contact site 143,153 that are extended respectively by first, second holding parts 141,151 two ends.

As Fig. 3, described first, second weld part 142,152 electrically contacts with the conducting strip 31 of circuit board 30 respectively, and is weldingly fixed on the conducting strip 31 of circuit board 30, so that electric connector 10 is fixed on the circuit board 30.Described first, second contact site 143,153 also forms with first, second contact feet 241,251 of LED illuminating module 20 respectively and electrically contacts, and to reach LED illuminating module 20 is electrically connected to circuit board 30.

Described electric connector 10 also is provided with a plurality of grooves 16 in accommodation space 12, these a plurality of grooves 16 be positioned at heat-transfer device 13 upper surfaces around.

Described electric connector 10 also is provided with a cover body 17, and this cover body 17 is fixed on the pedestal 11, and is positioned at the top of heat-transfer device 13.Described cover body 17 has the secondary optics effect, be convex lens or concavees lens or coloured shade etc., and be provided with and be located at a plurality of surperficial 171 of LED illuminating module 20 tops, wherein at least one surface has refraction effect, with the light that LED illuminating module 20 is launched, behind this surface, go out by unified direction or certain color emission.

Described cover body 17 can be put in order the radiation direction or the color of LED illuminating module 20, and the light that makes LED illuminating module 20 can reflect away according to unified direction or certain color after by each surface of cover body 17.

During assembling,, and consult Fig. 4 to Fig. 6 simultaneously as Fig. 3, at first, heat radiation module 40 is fixed on a side of circuit board 30, and between heat radiation module 40 and circuit board 30, is provided with certain thickness heat-conducting medium 50, be used to fill up the space between heat radiation module 40 and the circuit board 30, reduce its thermal resistance value.

Secondly, electric connector 10 is weldingly fixed on the circuit board 30, first, second weld part 142,152 correspondences of first, second terminal 14,15 are welded on the conducting strip 31 of circuit board 30, and make heat-transfer device 13 be located at the upper surface of circuit board 30, being positioned at of circuit board 30 location heat-transfer devices 13 is relative with the position of location heat radiation module 40, and between heat-transfer device 13 and circuit board 30, also be provided with certain thickness heat-conducting medium 50, with this electric connector 10 is fixed on the circuit board 30, and realizes electrically conducting between electric connector 10 and the circuit board 30.

Once more, LED illuminating module 20 is assembled in the electric connector 10, insulating base frame 23 with LED illuminating module 20 is installed with in the accommodation space 12 that is fixed on electric connector 10 earlier, and the heat dissipation element 26 that makes LED illuminating module 20 is just in time facing to the heat-transfer device 13 in the accommodation space 12, so that the heat-transfer device 13 of the heat that LED illuminating module 20 is given out by electric connector module 10 is transferred on the heat radiation module 40; Make then on first, second contact site 143,153 of corresponding respectively first, second terminal 14,15 that is pressed on electric connector 10 of first, second contact feet 241,251 of first, second conductive connecting pin 24,25 of LED illuminating module 20, make between LED illuminating module 20 and the electric connector 10 and realize electrically conducting.

Simultaneously, between the heat-transfer device 13 of the heat dissipation element 26 of LED illuminating module 20 and electric connector 10, certain thickness heat-conducting medium 50 is set also, heat-conducting medium 50 parts contain metallic particles, after by heat dissipation element 26 compressions, heat-conducting medium 50 can extend to lateral deformation, and more than heat-conducting medium 50 can be extruded and flow in the groove 16, so groove 16 can prevent heat-conducting medium 50 and flow into to other place in accommodation space 12 because of extruding, even can be attached to first of electric connector 10, second terminal 14,15 or LED illuminating module 20 first, second conductive region 24, on 25, influence first, second terminal 14,15 and first, second conductive region 24, electrical contact between 25, thus electrical contact the between electric connector 10 and the LED illuminating module 20 disturbed.

At last, cover body 17 is positioned at the top of LED illuminating module 20, and specifically be positioned at the top of the crystal 22 of LED illuminating module 20, make light that the light-emitting component 21 of LED illuminating module 20 launches by cover body 17 a plurality of surperficial 171 after, reflect away to same direction or certain color, and be radiated on the object that needs irradiation, so by cover body 17, can adjust the radiation direction or the color of LED illuminating module 20, and make its uniform irradiation on the object of need irradiation.

Because electric connector 10 has been weldingly fixed on the circuit board 30, so pass through electric connector 10, can realize electrically conducting between LED illuminating module 20 and the circuit board 30 as intermediary, the exposure intensity of light can be strengthened, and radiation direction or color can be adjusted; And be provided with heat-transfer device 13 at electric connector 10, heat-transfer device 13 conducts mutually with the heat dissipation element 26 of LED illuminating module 20, and heat-transfer device 13 is positioned at outside the light transmission range that the light-emitting component 21 of LED illuminating module 20 penetrates, when so LED illuminating module 20 is luminous, can not be radiated on the heat-transfer device 13, and the heat that LED illuminating module 20 is distributed can be transmitted on the heat-transfer device 13 efficiently, be transferred on the circuit board 30 by heat-transfer device 13 again, being transferred to heat radiation module 40 from circuit board 30 at last distributes, so the heat that LED illuminating module 20 can not distributed directly is transferred on the circuit board 30, and the pyroconductivity of the dielectric layer of circuit board 30 is bad, and incurs loss through delay 20 heat radiations of LED illuminating module.

Electric connector of the present invention is as the intermediary that is connected between a plurality of LED illuminating module and the circuit board, not only can realize being connected between a plurality of LED illuminating module and the circuit board, can strengthen the exposure intensity of light, and can adjust radiation direction or color; When the LED illuminating module needs to change because of damaging, only need to change the LED illuminating module of damaging, and need not to change together all LED illuminating module and circuit board and heat radiation module, thus cost-saved, and be convenient for changing; And on electric connector, be provided with heat-transfer device, and outside the light transmission range that the LED illuminating module that is positioned at heat-transfer device penetrates, when so the LED illuminating module is luminous, can not be radiated on the heat-transfer device, and the heat-transfer device heat that can efficiently the LED illuminating module be given out, be transferred on the circuit board by heat-transfer device, utilize the fin of heat radiation module that heat is conducted again, and the heat that the LED illuminating module can not distributed directly is transferred on the circuit board, and the pyroconductivity of the dielectric layer of circuit board is bad, and incurs loss through delay the heat radiation of LED illuminating module; And on electric connector, also be provided with cover body, can adjust the radiation direction or the color of LED illuminating module, make its uniform irradiation on the object of need irradiation.

Fig. 7 is the electric connector 10 of second embodiment of the invention and the combination schematic diagram of LED illuminating module 20, and the difference of present embodiment and above-mentioned first embodiment is: can accept a plurality of LED illuminating module 20 in the electric connector 10, to strengthen intensity of illumination.The pedestal 11 of electric connector 10 is provided with a plurality of accommodation spaces 12, respectively is provided with a LED illuminating module 20 in each accommodation space 12, and cover body 17 still is used to adjust the radiation direction or the color of a plurality of LED illuminating module 20.Other structure of present embodiment is all identical with above-mentioned first embodiment, at this repeated description not just.

Fig. 8 is the electric connector 10 of third embodiment of the invention and the combination schematic diagram of LED illuminating module 20, the difference of present embodiment and above-mentioned second embodiment is: described cover body 17 not only can be adjusted the radiation direction or the color of LED illuminating module 20, but also can be used as the effect of fastener, so that LED illuminating module 20 is installed in the accommodation space 12 of electric connector 10, prevent LED illuminating module 20 electric connector 10 activities relatively in accommodation space 12.

One end of described cover body 17 is by one 172 end that is articulated in the pedestal 11 of electric connector 10, the other end of cover body 17 is provided with the other end that a holding part 173 buttons are held in pedestal 11, and on cover body 17, be provided with a rolled-up stock 174, this rolled-up stock 174 is pressed on the LED illuminating module 20 that is located in the electric connector 10, and on rolled-up stock 174, offer at least one through hole 175, with the crystal 22 that passes LED illuminating module 20, and the light that allows LED illuminating module 20 send passes.Other structure of present embodiment is all identical with above-mentioned second embodiment, at this repeated description not just.

Fig. 9 is the electric connector 10 of fourth embodiment of the invention and the combination schematic diagram of LED illuminating module 20, the difference of present embodiment and above-mentioned first embodiment is: cover body 17 integral body all have refraction effect, form by a plurality of curved surfaces 176 and a plurality of bendings surface 177, wherein, curved surfaces 17 is fixedly arranged on the pedestal 11, and having refraction effect, the light that LED illuminating module 20 is launched reflects away along same direction or certain color after can both producing refraction effect by curved surfaces 176 and bending surface 177.Other structure of present embodiment is all identical with above-mentioned first embodiment, at this repeated description not just.

Figure 10 is the electric connector 10 of fifth embodiment of the invention and the combination schematic diagram of LED illuminating module 20, the difference of present embodiment and above-mentioned first embodiment is: the difference of present embodiment and above-mentioned first embodiment is: each side 178 of cover body 17 has refraction effect, and end face 179 backs that are refracted to cover body 17 behind LED illuminating module 20 each side of light by cover body 17 of launching reflect away to a plurality of directions or multiple color.Other structure of present embodiment is all identical with above-mentioned first embodiment, at this repeated description not just.

Claims (10)

1. electric connector is characterized in that: be used to accept at least one illuminating module, comprise:

One pedestal is provided with at least one accommodation space, and described illuminating module is placed in this accommodation space;

At least two-terminal forms electrical the contact with described illuminating module;

At least one heat-transfer device is in order to conduct the heat energy of described illuminating module;

At least one cover body is located at the top of described illuminating module, in order to adjust the light of illuminating module.

2. electric connector as claimed in claim 1 is characterized in that: described cover body is provided with a plurality of surfaces.

3. electric connector as claimed in claim 1 is characterized in that: described cover body is concavees lens.

Electric connector as claimed in claim 1 is characterized in that: described cover body is convex lens.

4. electric connector as claimed in claim 1 is characterized in that: described cover body is provided with the fixedly rolled-up stock of illuminating module in accommodation space.

5. electric connector as claimed in claim 4 is characterized in that: described cover body one end is articulated in an end of pedestal, and the other end be located in the other end of pedestal.

6. electric connector as claimed in claim 1 is characterized in that: described heat-transfer device is located in the pedestal, and is revealed in the outer surface of pedestal to small part.

7. electric connector as claimed in claim 1 is characterized in that: described terminal is provided with the holding parts that is fixedly arranged in the pedestal and reaches weld part that is extended by holding parts and the contact site that contacts with illuminating module.

8. arrangements of electric connection as claimed in claim 1, it is characterized in that: the light-emitting component that described illuminating module comprises an insulating base, is located at least one heat dissipation element in the insulating base and contacts with this heat dissipation element, described heat-transfer device conducts mutually with described heat dissipation element.

9. arrangements of electric connection as claimed in claim 1 is characterized in that: the upper surface of described heat-transfer device is provided with heat-conducting medium.

10. arrangements of electric connection as claimed in claim 9 is characterized in that: described electric connector also is provided with at least one groove, and this groove is positioned at around the upper surface of heat-transfer device.

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