CN201475699U

CN201475699U - LED illumination device

Info

Publication number: CN201475699U
Application number: CN2009201618097U
Authority: CN
Inventors: 吴建朋; 李昌旺
Original assignee: JIN CHIN PRECISION GRINDING CO Ltd
Current assignee: JIN CHIN PRECISION GRINDING CO Ltd
Priority date: 2009-06-25
Filing date: 2009-06-25
Publication date: 2010-05-19
Anticipated expiration: 2019-06-25

Abstract

The utility model relates to an LED illumination device. The LED illumination device comprises a metal bottom plate and a circular metal cover body locked with each other, wherein a hollowed-out hole is formed on the circular metal cover body; an accommodating space is formed between the metal bottom plate and the circular metal cover; and a cooling plate, an LED light source unit, a reflection cup and a transparent cover covering on the hollowed-out hole are sequentially accommodated in the accommodating space. The light beam emitted by the LED light source is projected outside through the transparent cover after being reflected by the reflection cup. The heat generated by the LED light source unit is dissipated outwards through the cooling plate, the metal bottom plate and the circular metal cover body.

Description

The LED lighting device

Technical field

The utility model relates to a kind of lighting device, particularly relates to a kind of LED lighting device.

Background technology

(Light Emitting Diode LED) is a kind of joint diode to light emitting diode, and it is mainly by being constituted at the p at semiconductor-based end type epitaxial layer and n type epitaxial layer.After forming epitaxial structure, wafer then is fixed on the panel through cutting, passes through routing then, encapsulates at last again, forms the LED emitting bulb.

Advantageous characteristics such as LED has that volume is little, power saving, reaction time are fast, rich color and environmental protection become important light-emitting component indispensable in the modern life already.General LED is mainly used in the work of illumination or caution.LED uses and when converting luminous energy to by electric energy, can produce heat and high temperature in illumination or caution, and during 1 ℃ of its every rising, the brightness of this LED will descend 0.9%.This shows that temperature-rise effect has more important to the influence of LED brightness.So how to dispel the heat effectively to keep the brightness of this LED, promptly become the important problem of this LED.

LED is used for illumination and when using as lighting device, generally is to establish with a plurality of vast radiating fins at the external shell of this LED lighting device, with the usefulness as heat radiation.Yet this is to increase its volume, and lighting device can limit to intention on its profile because of being subject to those radiating fins.

Summary of the invention

At the shortcoming of above-mentioned existing known LED lighting device, the purpose of this utility model is to provide a kind of LED lighting device of new structure, and the radiating mode that it uses plane formula can make the slimming of LED lighting device, and have good radiating effect.

The purpose of this utility model and solve its technical problem and realize by the following technical solutions.According to a kind of LED lighting device that the utility model proposes, it includes a metal base plate and a metal ring cover body of mutual locking, the metal ring cover body has a hollow hole, form an accommodation space between metal base plate and the metal ring cover body, this accommodation space is equipped with a coldplate, a led light source unit, a tore of reflection and a transparency cover in regular turn, and transparency cover covers hollow hole.The light that led light source sent is outwards throwed by transparency cover after reflecting via tore of reflection; The heat that the led light source unit is taken place is outwards dispelled the heat via coldplate, metal base plate and metal ring cover body.

The purpose of this utility model and solve its technical problem and also can be applied to the following technical measures to achieve further.

According to an embodiment of the present utility model, aforesaid LED lighting device, wherein said metal base plate is provided with a through hole in the position in the face of coldplate, makes it have more radiating effect.

According to an embodiment of the present utility model, aforesaid LED lighting device, wherein said led light source unit has a substrate, this substrate is provided with a led light source, its via tore of reflection after, towards transparency cover and hollow hole, make led light source by transparency cover direction throw light.

According to an embodiment of the present utility model, aforesaid LED lighting device, wherein said substrate is provided with two wiring pads, tore of reflection is provided with a wire casing in the position corresponding to the wiring pad, be formed with a threading passage between metal ring cover body and the tore of reflection, it is corresponding to wire casing, and metal base plate is provided with a wire hole in the position corresponding to the threading passage.External cable is welded in basic wiring pad, and is communicated to a power supply via wire casing, threading passage and wire hole in regular turn, to provide power supply to led light source.

According to an embodiment of the present utility model, aforesaid LED lighting device, wherein said tore of reflection has relative one first and one second, it is respectively equipped with one first annular groove and one second annular groove, this first and second annular groove is embedded with one the one O shape ring and one the 2nd O shape ring respectively, and O shape ring is between this tore of reflection and coldplate, and the 2nd O shape is encircled then between tore of reflection and transparency cover.According to this, make the led light source unit that is coated on tore of reflection inside have water proofing property.

According to an embodiment of the present utility model, aforesaid LED lighting device, wherein said metal base plate is formed with an opening at the opposite side of hollow hole, and metal base plate is sealed opening and is one with at least one lock member with the locking of metal base plate and metal ring cover body, reaches locking between the two.

According to an embodiment of the present utility model, aforesaid LED lighting device, wherein said coldplate is the non-metal inorganic material coldplate, and it can be the coldplate of aluminium oxide, zinc oxide, magnesian constituent, makes the heat that the led light source unit is produced be absorbed cooling.

According to an embodiment of the present utility model, aforesaid LED lighting device, wherein said metal base plate are the Al-alloy metal base plate, and the metal ring cover body is an Al-alloy metal annular cover body, makes the heat that coldplate absorbed and cooled off is dispelled the heat.

The utility model compared with prior art has tangible advantage and beneficial effect.By technique scheme, the utility model LED lighting device has following advantage and beneficial effect at least: LED lighting device of the present utility model uses the radiating mode of plane formula, can make the slimming of LED lighting device, and have good radiating effect.

Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.

Description of drawings

Fig. 1 is the exploded perspective schematic diagram of the utility model LED lighting device preferred embodiment.

Fig. 2 is the three-dimensional cross-sectional schematic of the utility model LED lighting device preferred embodiment.

Fig. 3 is the cross-sectional schematic of the utility model LED lighting device preferred embodiment.

100: metal base plate 110: lock member

120: wire hole 130: through hole

200: metal ring cover body 210: opening

220: hollow hole 230: accommodation space

240: threading passage 300: coldplate

400:LED light source cell 410: substrate

411: wiring pad 420:LED light source

500: tore of reflection 510: wire casing

520: the first 521: the first annular grooves

O shape ring was 530: the second in 522: the one

532: the two O shape rings of 531: the second annular grooves

600: transparency cover

The specific embodiment

For further setting forth the utility model is to reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to being elaborated according to its specific embodiment of LED lighting device, structure, feature and the effect thereof that the utility model proposes.

Seeing also Fig. 1 to shown in Figure 3, is respectively the exploded perspective schematic diagram of the utility model LED lighting device preferred embodiment, three-dimensional cross-sectional schematic and cross-sectional schematic.The LED lighting device of the utility model preferred embodiment includes a metal base plate 100, a metal ring cover body 200, a coldplate 300, a led light source unit 400, a tore of reflection 500 and a transparency cover 600.

Above-mentioned metal base plate 100 is a plate body form, 200 of metal ring cover bodies are the cover body form of an annular, and be formed with an opening 210 and a hollow hole 220 respectively in its opposite side, metal base plate 100 is sealed the opening 210 of metal ring cover body 200, and with a plurality of lock members 110 for example screw be one with metal base plate 100 with 200 lockings of metal ring cover body, and form an accommodation space 230 betwixt.On the implementation, metal base plate 100 and metal ring cover body 200 are made with the metal material of tool high-termal conductivity, for example are respectively Al-alloy metal base plate and Al-alloy metal annular cover body.

Coldplate 300, led light source unit 400, tore of reflection 500 and transparency cover 600 are placed in the accommodation space 230 that is constituted between metal base plate 100 and the metal ring cover body 200 in regular turn, and transparency cover 600 covers the hollow hole 220 of metal ring cover body 200.

Led light source unit 400 has a substrate 410, and this substrate is provided with a led light source 420, its via tore of reflection 500 after, towards the hollow hole 220 of transparency cover 600 and metal ring cover body 200.Therefore, the light that led light source 420 is sent is via after tore of reflection 500 reflections, is outwards throwed by transparency cover 600.

The substrate 410 of led light source unit 400 is provided with two wiring pads 411, tore of reflection 500 is provided with a wire casing 510 in the position corresponding to wiring pad 411, and be formed with a threading passage 240 between metal ring cover body 200 and the tore of reflection 500, it is corresponding to wire casing 510, and metal base plate 100 is provided with a wire hole 120 in the position corresponding to threading passage 240.According to this, external cable (not shown) is the wiring pad 411 that can be welded in substrate 410, and is communicated to a power supply (not shown) via wire casing 510, threading passage 240 and wire hole 120 in regular turn, so that the led light source 420 of power supply to led light source unit 400 to be provided.And this kind wiring construction, do not influence the relation of connecting airtight between led light source unit 400 and the coldplate 300, thereby do not influence the cooling heat dissipation effect of 300 pairs of led light source unit 400 of coldplate.

Coldplate 300 has high radiating effect, and on the implementation, this coldplate 300 can adopt the non-metal inorganic material coldplate of tool high-cooling property, and more in detail, this coldplate 300 can be the coldplate of aluminium oxide, zinc oxide, magnesian constituent.According to this, the heat energy that coldplate 300 can absorb and cooling LED light source cell 400 is taken place, and outwards dispel the heat via metal base plate 100 and metal ring cover body 200.Metal base plate 100 more is provided with a through hole 130 in the position in the face of coldplate 300, and has more radiating effect.

The inside of LED lighting device is provided with seal construction, makes it have water proofing property.On the implementation, the sealing structure is, tore of reflection 500 has relative one first 520 and 1 second 530, it is respectively equipped with one first annular groove 521 and one second annular groove 531, this first and second annular groove is embedded with one the one O shape ring, 522 and 1 the 2nd O shape ring 532 respectively, and O shape ring 522 is between tore of reflection 500 and coldplate 300, and the 2nd O shape ring 532 is then between tore of reflection 500 and transparency cover 600.According to this, make the led light source unit 400 that is coated on tore of reflection 500 inside have water proofing property.

According to the LED lighting device of the utility model one embodiment, be with the coldplate of plane formula and the metal base plate that is in contact with it and metal ring cover body as the heat radiation parts, can make the integral LED lighting device reach the requirement of thin typeization, and radiating effect is good.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.

Claims

1. LED lighting device, it is characterized in that including a metal base plate and a metal ring cover body of mutual locking, this metal ring cover body has a hollow hole, form an accommodation space between this metal base plate and this metal ring cover body, this accommodation space is equipped with a coldplate, a led light source unit, a tore of reflection and a transparency cover in regular turn, and this transparency cover covers this hollow hole.

2. LED lighting device according to claim 1 is characterized in that wherein said metal base plate is provided with a through hole in the position in the face of coldplate.

3. LED lighting device according to claim 2 is characterized in that wherein said led light source unit has a substrate, and this substrate is provided with a led light source, this led light source via this tore of reflection after, towards this transparency cover and this hollow hole.

4. LED lighting device according to claim 3, it is characterized in that wherein said substrate is provided with two wiring pads, this tore of reflection is provided with a wire casing in the position corresponding to this wiring pad, be formed with a threading passage between this metal ring cover body and this tore of reflection, it is corresponding to this wire casing, and this metal base plate is provided with a wire hole in the position corresponding to this threading passage.

5. LED lighting device according to claim 4, it is characterized in that wherein said tore of reflection has relative one first and one second, be respectively equipped with one first annular groove and one second annular groove, this first annular groove and second annular groove are embedded with one the one O shape ring and one the 2nd O shape ring respectively, and O shape ring is between this tore of reflection and this coldplate, and the 2nd O shape is encircled between this tore of reflection and this transparency cover.

6. LED lighting device according to claim 5, it is characterized in that wherein said metal base plate is formed with an opening at the opposite side of this hollow hole, this metal base plate is sealed this opening and is one with at least one lock member with the locking of this metal base plate and this metal ring cover body.

7. according to the described LED lighting device of arbitrary claim in the claim 1 to 5, it is characterized in that wherein said coldplate is the non-metal inorganic material coldplate.

8. LED lighting device according to claim 7 is characterized in that wherein said non-metal inorganic material coldplate is the coldplate of aluminium oxide, zinc oxide and magnesia constituent.

9. LED lighting device according to claim 8 is characterized in that wherein said metal base plate is the Al-alloy metal base plate, and this metal ring cover body is an Al-alloy metal annular cover body.