CN101852414B - Flashlight and LED optical module thereof - Google Patents

Flashlight and LED optical module thereof Download PDF

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Publication number
CN101852414B
CN101852414B CN2010102141307A CN201010214130A CN101852414B CN 101852414 B CN101852414 B CN 101852414B CN 2010102141307 A CN2010102141307 A CN 2010102141307A CN 201010214130 A CN201010214130 A CN 201010214130A CN 101852414 B CN101852414 B CN 101852414B
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CN
China
Prior art keywords
hole
led
light source
reflector
optical module
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Expired - Fee Related
Application number
CN2010102141307A
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Chinese (zh)
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CN101852414A (en
Inventor
周明杰
刘廷明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
Original Assignee
Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
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Publication date
Application filed by Oceans King Lighting Science and Technology Co Ltd, Shenzhen Oceans King Lighting Engineering Co Ltd filed Critical Oceans King Lighting Science and Technology Co Ltd
Priority to CN2010102141307A priority Critical patent/CN101852414B/en
Publication of CN101852414A publication Critical patent/CN101852414A/en
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Publication of CN101852414B publication Critical patent/CN101852414B/en
Expired - Fee Related legal-status Critical Current
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  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The invention provides a flashlight and an LED (light-emitting diode) optical module thereof, which are applicable to the field of illumination. The LED optical module of the flashlight comprises a reflector, an LED light source consisting of an LED light-emitting body, a light source PCB (printed circuit board) and an aluminum substrate, an LED radiator and a drive circuit PCB, wherein an insulating sheet provided with an through-hole is arranged between the LED light source and the reflector; the LED light-emitting body passes through the through-hole; and the electrode welding spots on the aluminum substrate are covered by the insulating sheet. By arranging the insulating sheet between the LED light source and the reflector, the embodiment of the invention can prevent the end surface of the bottom hole of the reflector from coming into contact with the electrode welding spots on the LED aluminum substrate and further avoid the problem of short-circuit.

Description

A kind of LED torch optical module and torch
Technical field
The invention belongs to lighting field, relate in particular to a kind of LED torch optical module and torch.
Background technology
Mini flashlight is comprised of lamp holder and stack shell two parts.Wherein, lamp holder is by lamp holder cylinder, reflector, led light source, LED heat radiation rack, pcb board, and the spring composition, comprises battery in the stack shell.The size of existing mini flashlight is less, used LED aluminium base is less, aluminium base is provided with two electrode pads and a LED illuminator, and the LED illuminator itself occupies than large space, therefore, when the bottom outlet end face of reflector contacts with aluminium base, be easy to contact with two solder joints, cause short circuit.Even reflector is nonmetallic materials, also at its surface electrical film of aluminizing, still there be the danger of short circuit.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of LED torch optical module, is intended to solve existing LED torch because the electrode pads of led light source contacts the short circuit problem that conduction causes with reflector.
The embodiment of the invention is to realize like this, a kind of LED torch optical module, the led light source, the LED radiator that comprise reflector, be comprised of LED illuminator, light source pcb board and metal substrate, and drive circuit pcb board are provided with the insulating trip with through hole between described led light source and the described reflector;
Described LED illuminator passes through described through hole;
Described insulating trip covers the electrode pads on the described metal substrate.
Described through hole comprises the first through hole and the second through hole; Described the first through hole is identical with size with the shape of described light source pcb board, and described light source pcb board passes through described the first through hole; Described the second through hole is identical with size with the shape of described LED illuminator, and described LED illuminator passes through described the second through hole; Described the first through hole and the second through hole are connected in the vertical direction, form the Double-ladder structure.
Optimal technical scheme as the embodiment of the invention:
Described insulating trip is made by rigid plastics.
The relative position of the electrode pads of described insulating trip on described metal substrate is provided with the first blind hole and the second blind hole, for the protection of the electrode pads on the described metal substrate.
The edge of described insulating trip is provided with two through holes, and the space of bending is provided for the LED wire of drawing from described electrode pads.
Described LED radiator is comprised of sleeve and cooling stand, described metal substrate is aluminium base, described aluminium base and cooling stand are respectively equipped with two through holes, for the LED wire of drawing from described electrode pads provides passage, described LED wire are connected with described drive circuit pcb board.
Another purpose of the embodiment of the invention is to provide a kind of torch, and described torch comprises above-mentioned LED torch optical module.
The embodiment of the invention arranges an insulating trip between led light source and reflector, avoided the bottom outlet end face of reflector to contact with electrode pads on the LED metal substrate, and then avoided the short circuit phenomenon.
Description of drawings
Fig. 1 is the decomposition texture schematic diagram of the LED torch optical module that provides of first embodiment of the invention;
Fig. 2 is the LED illuminator that provides of the embodiment of the invention and the structural representation of light source pcb board;
Fig. 3 is the structural representation of the insulating trip that provides of first embodiment of the invention;
Fig. 4 is the cross-sectional view of the insulating trip that provides of second embodiment of the invention;
Fig. 5 is the structural representation of the insulating trip that provides of third embodiment of the invention;
Fig. 6 is the structural representation of the insulating trip that provides of third embodiment of the invention.
The specific embodiment
For the purpose, technical scheme and the advantage that make invention is clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
The embodiment of the invention arranges an insulating trip between reflector and led light source, avoid the bottom outlet end face of reflector to contact with electrode pads on the LED metal substrate and cause short circuit phenomenon.
The embodiment of the invention provides a kind of LED torch optical module, the led light source, the LED radiator that comprise reflector, formed by LED illuminator, light source pcb board and metal substrate, and the drive circuit pcb board, be provided with the insulating trip with through hole between reflector and the led light source; LED illuminator via through holes passes; Electrode pads on the insulating trip covering metal substrate.
The present invention also provides a kind of torch that comprises above-mentioned LED torch optical module.
Below in conjunction with specific embodiment specific implementation of the present invention is described in detail:
Embodiment one:
Fig. 1 shows the decomposition texture schematic diagram of the LED torch optical module that first embodiment of the invention provides, Fig. 3 shows the structural representation of the insulating trip that first embodiment of the invention provides, for convenience of explanation, only show the part relevant with the embodiment of the invention.
The led light source that this LED torch optical module comprises reflector 1, be comprised of LED illuminator 2, light source pcb board 3 and metal substrate 4, the LED radiator that is formed by sleeve 5 and cooling stand 6, and drive circuit pcb board 7, sleeve 5 and cooling stand 6 are fixed by screw, and metal substrate 4 is generally aluminium base.The both positive and negative polarity of led light source is connected with the both positive and negative polarity of drive circuit pcb board 7, drive circuit pcb board 7 is stuck on the groove of cooling stand 6 inboards, and joint welded, to realize the wire purpose, sleeve 5 is with external screw thread and internal thread, be connected with the lamp holder cylinder of LED torch by external screw thread, be connected with reflector 1 by internal thread, reflector 1 makes it fixing by the bottom outlet end face with the upper surface that led light source is pressed in cooling stand 6, the led light source back side scribbles heat-conducting silicone grease, be used for heat radiation and stick on cooling stand 6 upper surfaces, the anodal conducting of the battery in drive circuit pcb board 7 and the torch, the negative pole of drive circuit pcb board 7 links to each other with cooling stand 6, negative pole is led the lower surface of cooling stand.
Metal substrate 4 is provided with electrode pads, comprise the first electrode pads 41 and the second electrode pads 42, and LED illuminator 2 and light source pcb board 3, when the bottom outlet of reflector 1 is pressed onto on the metal substrate 4, be easy to contact with two electrode pads, because reflector 1 is metal material, perhaps be nonmetallic materials, and at the surface electrical film of aluminizing, when reflector 1 contacts with electrode pads, can cause short circuit.Therefore, set up the insulating trip 8 with through hole 81 between reflector 1 and led light source, through hole 81 passes for LED illuminator 2.The concrete shape of insulating trip 8 and through hole 81 and size are as the criterion with the electrode pads on can aluminium coating substrate 4.Insulating trip 8 covers the upper surface of aluminium base 4, avoids the bottom outlet end face of reflector 1 to contact with electrode pads on the aluminium base 4, has avoided short circuit phenomenon.
Embodiment two:
Fig. 2 shows LED illuminator 2 that the embodiment of the invention provides and the structural representation of light source pcb board 3, Fig. 4 shows the cross-sectional view of the insulating trip that second embodiment of the invention provides, for convenience of explanation, only show the part relevant with the embodiment of the invention.
The both sides of light source pcb board 3 are provided with electrode points 31, and the electrode points outside is coated with silica gel, when silica gel damaged, the bottom outlet of reflector 1 again hour, electrode points 31 probably with the bottom outlet end contact of reflector 1, make reflector 1 conduction, cause short circuit.Therefore, the through hole 81 of insulating trip 8 is set to circular port, size equals or is slightly larger than the size of LED illuminator, can cover electrode points on the light source pcb board and the solder joint on the metal substrate.Can also adopt more excellent through-hole structure, through hole 81 is set to the double-deck through-hole structure of notch cuttype, the first through hole 811 is square opening, the size in hole equals or is slightly larger than the size of light source pcb board 3, pass for the light source pcb board, the second through hole 812 is circular port, and the size in hole equals or be slightly larger than the size of LED illuminator 2, passes for the LED illuminator.The face at the first through hole 811 places contacts with 4 of metal substrates, and the face at the second through hole 812 places contacts with the bottom outlet end face face of reflector 1.The through hole of this structure is the electrode pads on the covering metal substrate 4 and the electrode points on the light source pcb board 3 effectively, further reduces the probability of short circuit, and guarantees the steadiness of reflector and led light source.
Embodiment three:
Fig. 5 and Fig. 6 show the structural representation of the insulating trip that third embodiment of the invention provides, and for convenience of explanation, only show the part relevant with the embodiment of the invention.
Metal substrate 4 is provided with through hole, comprise the third through-hole 43 that is arranged on the first electrode pads 41 sides, and the fourth hole 44 on the second electrode pads 42 sides, also be provided with through hole on the cooling stand 6, comprise fifth hole 61 and the 6th through hole 62, third through-hole 43 is corresponding with the position of fifth hole 61, and the position of fourth hole 44 and the 6th through hole 62 is corresponding.The LED wire bonds is on two electrode pads on the metal substrate 4, the LED wire of drawing through the first electrode pads 41 is connected with drive circuit pcb board 7 with fifth hole 61 by third through-hole 43, and the LED wire of drawing through the second electrode pads 42 is connected with drive circuit pcb board 7 with the 6th through hole 62 by fourth hole 44.Be provided with the 7th through hole 82 and the 8th through hole 83 at the edge of insulating trip 8, corresponding with third through-hole 43 and fourth hole 44 on the metal substrate 4 respectively, the space of bending is provided for being welded on LED wire on the metal substrate 4.
Because the solder joint on the metal substrate 4 has certain altitude, therefore be provided with the first blind hole 84 and the second blind hole 85 in the corresponding position of insulating trip 8, for the protection of solder joint.
Embodiment four:
In embodiments of the present invention; because insulating trip 8 is thinner; if the solder joint on the metal substrate 4 welds badly; often can leave spike; when reflector 1 is pressed onto on the metal substrate 4; the spike of solder joint can puncture insulating trip 8; also there is the danger of short circuit; therefore, this insulating trip adopts the higher plastics of hardness to make, and can guarantee that not only reflector 1 does not puncture insulating trip when being pressed on the aluminium base 4; can also guarantee the flatness of insulating trip; make the axial location better effects if of reflector, make the concentricity of reflector and LED illuminator higher, improve lighting effect.
The embodiment of the invention arranges an insulating trip between led light source and reflector, avoided reflector to contact with electrode pads on the LED metal substrate and the short circuit phenomenon that causes.The through hole of insulating trip is set to Double-ladder type structure, and the solder joint on not only can the aluminium coating substrate can also cover the electrode points on the pcb board of led light source, has further reduced the probability of short circuit.At insulation board blind hole and through hole are set, can protect solder joint, and bend the space for the LED wire provides.Insulation board adopts rigid plastics to make, and when avoiding reflector to be pressed onto metal substrate it is punctured and causes short circuit, and guaranteed the flatness of insulating trip, makes the axial location better effects if of reflector.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (6)

1. LED torch optical module, the led light source, the LED radiator that comprise reflector, formed by LED illuminator, light source pcb board and metal substrate, and the drive circuit pcb board, it is characterized in that, be provided with the insulating trip with through hole between described led light source and the described reflector;
Described LED illuminator passes through described through hole;
Described insulating trip covers the electrode pads on the described metal substrate;
Described through hole comprises the first through hole and the second through hole; Described the first through hole is identical with size with the shape of described light source pcb board, and described light source pcb board passes through described the first through hole; Described the second through hole is identical with size with the shape of described LED illuminator, and described LED illuminator passes through described the second through hole; Described the first through hole and the second through hole are connected in the vertical direction, form the Double-ladder structure.
2. optical module as claimed in claim 1 is characterized in that, described insulating trip is made by rigid plastics.
3. optical module as claimed in claim 1 is characterized in that, the relative position of the electrode pads of described insulating trip on described metal substrate is provided with the first blind hole and the second blind hole, for the protection of the electrode pads on the described metal substrate.
4. optical module as claimed in claim 1 is characterized in that, the edge of described insulating trip is provided with two through holes, and the space of bending is provided for the LED wire of drawing from described electrode pads.
5. optical module as claimed in claim 1, it is characterized in that, described LED radiator is comprised of sleeve and cooling stand, described metal substrate is aluminium base, described aluminium base and cooling stand are respectively equipped with two through holes, for the LED wire of drawing from described electrode pads provides passage, described LED wire is connected with described drive circuit pcb board.
6. a torch is characterized in that, described torch comprises each described LED torch optical module of claim 1 to 5.
CN2010102141307A 2010-06-29 2010-06-29 Flashlight and LED optical module thereof Expired - Fee Related CN101852414B (en)

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Application Number Priority Date Filing Date Title
CN2010102141307A CN101852414B (en) 2010-06-29 2010-06-29 Flashlight and LED optical module thereof

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CN101852414B true CN101852414B (en) 2013-04-17

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102563381A (en) * 2010-12-15 2012-07-11 海洋王照明科技股份有限公司 Lamp
CN104456152A (en) * 2013-09-13 2015-03-25 海洋王（东莞）照明科技有限公司 LED (light-emitting diode) lamp
CN110047411A (en) * 2019-04-01 2019-07-23 深圳市华星光电半导体显示技术有限公司 Large scale GOA product test Signals Transfer Board

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2755430Y (en) * 2004-11-16 2006-02-01 唐巨龙电子科技(深圳)有限公司 Radiating mineral light
CN201014258Y (en) * 2007-02-09 2008-01-30 廖汉源 Emergency lighting light
CN201377709Y (en) * 2009-07-23 2010-01-06 深圳市长方照明工业有限公司 LED bulb

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7549772B2 (en) * 2006-03-31 2009-06-23 Pyroswift Holding Co., Limited LED lamp conducting structure with plate-type heat pipe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2755430Y (en) * 2004-11-16 2006-02-01 唐巨龙电子科技(深圳)有限公司 Radiating mineral light
CN201014258Y (en) * 2007-02-09 2008-01-30 廖汉源 Emergency lighting light
CN201377709Y (en) * 2009-07-23 2010-01-06 深圳市长方照明工业有限公司 LED bulb

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