CN204404018U - A kind of bicycle headlight - Google Patents
A kind of bicycle headlight Download PDFInfo
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- CN204404018U CN204404018U CN201520023196.6U CN201520023196U CN204404018U CN 204404018 U CN204404018 U CN 204404018U CN 201520023196 U CN201520023196 U CN 201520023196U CN 204404018 U CN204404018 U CN 204404018U
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- headlight
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- heat carrier
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Abstract
The utility model provides a kind of simple and compact for structure and practical bicycle headlight, and this headlight comprises the cooling stand, main body, heat carrier, LED light source and the electric supply installation that are connected with cycle frame; Heat carrier one end is stretched in the cavity of main body, and LED light source to be arranged on the heat carrier in cavity and to be electrically connected with electric supply installation; The heat carrier other end is arranged on body exterior and is connected with cooling stand; Heat carrier and cooling stand are connected to form radiator structure.The thermal gradient too high phenomenon causing light-source temperature too high when headlight of the present utility model effectively can avoid work, the light decay of effective control light source and the luminous efficiency of raising light source, thus not only can extend the working life of headlight, and brightness of illumination and the lighting power of headlight can be increased.This bicycle headlight, without the need to carrying out the processing of other through-hole structures such as ventilating opening to main body, not only reduces processing and the production cost of headlight, and avoids the exposed problem causing affecting headlighting performance of internal part.
Description
Technical field
The utility model relates to the technical field of bicycle accessories, more particularly, relates to a kind of bicycle headlight.
Background technology
Headlight is a kind of lamp usually with speculum and special lens, and it is arranged on the front portion of engine, bicycle, tramcar or motorcycle, is used for illuminating road ahead.And bicycle and so on itself is not arranged to the vehicles of lighting apparatus, be arranged on headlight on bicycle as key lighting light fixture, the standard having become bicycle is equipped with.
Mostly adopt bulb as light source in the headlight of conventional mounting on bicycle, but in recent years along with the development of semiconductor element and the consideration of the low consumption energy, existing bicycle headlight also starts trial and utilizes LED technology: LED to be laid on substrate and to be arranged in housing, as the light source of headlight.In bicycle headlight use procedure, the heat that LED produces constantly can increase along with the raising of LED luminosity and intensity, when LED chip temperature rises, the light decay of easy increase LED light source and cause the luminous efficiency of LED light source to reduce, thus shorten the working life of LED, also affect the normal use of bicycle headlight.
And the existing LED that adopts is generally be dispersed in air by thermal-radiating mode by the heat that LED produces as the bicycle headlight of light source, therefore, the structure of existing bicycle headlight is top LED light source being all arranged on housing cavity, and ventilating opening is set on the housing that LED light source place is corresponding, make in bicycle running process, the heat sent during LED work is dispersed in air in thermal-radiating mode by ventilating opening.But by offering in the heat-radiation heat-dissipating mode of ventilating opening, the flow range of air is limited this, cannot avoid the too high phenomenon causing LED temperature too high of thermal gradient, thus affect the radiating effect of headlight LED light source.Therefore, the structure of existing bicycle headlight still can't resolve because its heat dispersion difference easily causes accelerating the light decay of LED light source and the luminous efficiency of reduction LED, thus shortens the problem of its working life, greatly affects service life and the heat dispersion of headlight.And, because existing bicycle headlight heat dispersion is poor, cause the light-source brightness of its inside and light source power to improve, thus define illuminating effect and the scope of application of headlight.Meanwhile, the structure that the housing that LED light source place is corresponding arranges ventilating opening not only increases the difficulty of processing of headlight, and headlight internal part exposed service life that also can affect headlight in atmosphere in use procedure.
The shortcoming of above-mentioned bicycle headlight constrains practicality and the Popularization And Development thereof of bicycle headlight to a certain extent.Therefore, how to design a kind of simple and compact for structure, heat dispersion is high and the bicycle headlight of long service life becomes a large technical barrier urgently to be resolved hurrily in illuminating industry.
Utility model content
The purpose of this utility model is to overcome shortcoming of the prior art with not enough, provides a kind of bicycle headlight high with heat dispersion simple and compact for structure; The thermal gradient too high phenomenon causing light-source temperature too high when this bicycle headlight effectively can avoid work, the light decay of effective control light source and the luminous efficiency of raising light source, thus not only extend working life, and brightness of illumination and lighting power can be increased, be conducive to the promotion and application in the illuminating industry of the vehicles.Further object is, provides a kind of practical bicycle headlight strong with ease of use.
In order to achieve the above object, the utility model is achieved by following technical proposals: a kind of bicycle headlight, throwing light on for being arranged on cycle frame, it is characterized in that: comprise the cooling stand, main body, heat carrier, LED light source and the electric supply installation that are connected with cycle frame; Described heat carrier one end is stretched in the cavity of main body, and LED light source to be arranged on the heat carrier in cavity and to be electrically connected with electric supply installation; The described heat carrier other end is arranged on body exterior and is connected with cooling stand; Described heat carrier and cooling stand are connected to form radiator structure.
In such scheme, bicycle headlight of the present utility model adopts the radiating mode of heat transfer and thermal convection current, the heat that LED light source produces is delivered on connected cooling stand and the cycle frame that is connected with cooling stand by heat carrier and carries out heat conducting and radiating, in bicycle running process, then carry out thermal convection current heat radiation by the convection current of air to cooling stand and heat carrier.Relative to the heat-radiation heat-dissipating mode of headlight in prior art, headlight of the present utility model adopts heat transfer and the dual radiating mode of thermal convection current two kinds, the thermal gradient too high phenomenon causing LED light source temperature too high when effectively can avoid work, the light decay of effective control LED light source and the luminous efficiency of raising LED light source, so not only can extend the working life of headlight, and brightness of illumination and the lighting power of headlight can be increased, improve practicality and the versatility of bicycle headlight, expand its scope of application and use occasion.
Simultaneously; the utility model is without the need to carrying out the processing of other through-hole structures such as ventilating opening to main body; not only reduce processing and the production cost of headlight; and the structural strength of headlight can be improved; and the parts of body interior are well protected, avoid the exposed problem causing affecting headlighting performance of internal part.
More particularly, described heat carrier is connected to form by heat-conducting seat and heat-conducting piece.Heat-conducting seat of the present utility model and heat-conducting piece one-body molded, thus strengthen the structural strength of heat-conducting piece.
Described heat carrier one end is stretched in the cavity of main body, LED light source is arranged on to be electrically connected on the heat carrier in cavity and with electric supply installation and refers to: described heat-conducting piece stretches in the cavity of main body from bottom part body, and LED light source to be arranged on heat-conducting piece and to be electrically connected with electric supply installation.LED light source of the present utility model comprises aluminium base and is laid in the LED luminescence chip on aluminium base, and LED luminescence chip is electrically connected with electric supply installation by aluminium base.
The described heat carrier other end is arranged on body exterior and is connected with cooling stand and refers to: described heat-conducting seat is arranged on main body outer bottom, and is connected with cooling stand is adjustable.Heat-conducting seat of the present utility model is connected with cooling stand is adjustable, according to the adjustment of lighting demand by regulating the relative position of cooling stand and heat-conducting seat to realize headlighting angle and scope, thus can improve the practicality of headlight.The cooling stand of this bicycle headlight can play two effects: be can realize being connected with in agent structure by heat carrier on the one hand, be can form thermal component by heat carrier on the other hand, thus increase the area of dissipation of this headlight.
The utility model also comprises the reflector be arranged in body cavity; One end that heat carrier is arranged in body cavity is stretched in reflector, and it is provided with one of LED light source facing to the reflective surface of reflector.Specifically, the heat-conducting piece of heat carrier is the strip heat-conducting piece with radian, and the aluminium base being laid with LED luminescence chip is arranged on heat-conducting piece, heat-conducting piece stretches in reflector, during work, the light of LED light source is radiated on the reflective surface of reflector, realizes the reflection of light.
In order to realize the utility model better, also comprise the connector and Reflex Reflector that are connected with body front end, described Reflex Reflector is connected with reflector by connector.
The utility model also comprises the circuit board being provided with control circuit, and described circuit board is arranged in the cavity of body rear; Described electric supply installation is power supply, and control circuit is connected to form by switch, power supply and peripheral circuit, switch-linear hybrid circuit board rear board and be electrically connected with LED light source.
The utility model also comprises the switch cover being arranged on body rear, described switch cover and main body are rotatably connected and are provided with the shifting part for toggle switch, during work, switch cover realizes shifting part toggle switch to control the on/off of LED light source relative to body rotation.The combination design of switch cover and circuit on-board switching is very ingenious, the practicality of further this headlight of raising, namely this switch cover can be used as the bonnet of headlight, can be used as again the parts of contact-making switch to control illumination or the closedown of headlight, thus improves the convenience of this headlight use.
Preferably, be provided with dividing plate between described circuit board and switch cover, described dividing plate is provided with through hole, and shifting part contacts with switch through through hole.The design of dividing plate can protect the internal part of headlight main body further.
Described heat-conducting piece is aluminium heat-conducting piece; Described electric supply installation is power supply or generator.Heat-conducting piece of the present utility model is die casting aluminium heat-conducting piece, and this die casting aluminium heat-conducting piece has the features such as lightweight, good heat conductivity, the thermal efficiency are high and structural strength is large, is conducive to the heat dispersion and the radiating effect that improve bicycle headlight.
The radiating principle of the utility model bicycle headlight is such: the radiating mode that the heat radiation employing heat transfer of this headlight and thermal convection current combine carries out the heat radiation of LED light source.Wherein, heat conducting and radiating mode to be delivered to by the heat that LED light source produces on connected cooling stand and the cycle frame that is connected with cooling stand by heat carrier to carry out heat conducting and radiating, and in this bicycle headlight, the heat transfer direction of the heat that LED light source produces is: LED luminescence chip-aluminium base-heat-conducting piece-heat-conducting seat-cooling stand-cycle frame.The radiating mode of thermal convection current is in bicycle running process, carries out thermal convection current heat radiation by the convection current of air to cooling stand and heat carrier.In two kinds of radiating modes, heat carrier and cooling stand are connected to form radiator structure, cooling stand and heat carrier play an important role, connection between cooling stand and heat carrier not only can play the structural connection of headlight, and can increasing heat radiation area, thus improve radiating efficiency and the validity of heat transfer and thermal convection current.
Compared with prior art, the utility model tool has the following advantages and beneficial effect:
1, the thermal gradient too high phenomenon causing light-source temperature too high when headlight of the present utility model adopts the radiating mode of heat transfer and thermal convection current effectively can avoid work, the light decay of effective control light source and the luminous efficiency of raising light source, thus not only can extend the working life of headlight, and brightness of illumination and the lighting power of headlight can be increased.
2, simple and compact for structure, the practical and highly versatile of the utility model bicycle headlight, is conducive to the promotion and application in the illuminating industry of the vehicles.
3, the utility model bicycle headlight is without the need to carrying out the processing of other through-hole structures such as ventilating opening to main body; not only reduce processing and the production cost of headlight; and the structural strength of headlight can be improved; and the parts of body interior are well protected, avoid the exposed problem causing affecting headlighting performance of internal part.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model bicycle headlight;
Fig. 2 is the explosive view of the utility model bicycle headlight;
Fig. 3 is the structural representation of the utility model bicycle headlight breaker in middle lid;
Wherein, 1 be cooling stand, 2 be main body, 3 be reflector, 4 be power supply, 5 be heat-conducting seat, 6 be heat-conducting piece, 7 be aluminium base, 8 be LED luminescence chip, 9 be connector, 10 be Reflex Reflector, 11 be PCB, 12 be switch, 13 be switch cover, 14 be dividing plate, 15 be through hole, 16 for shifting part.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the utility model is described in further detail.
Embodiment one
As shown in Figure 1 to Figure 3, bicycle headlight of the present utility model throws light on for being arranged on cycle frame, and this headlight comprises the cooling stand 1, main body 2, heat carrier, LED light source and the power supply 4 that are connected with cycle frame; Wherein, heat carrier is connected to form by heat-conducting seat 5 and heat-conducting piece 6.
Heat-conducting piece 6 of the present utility model is the strip heat-conducting piece with radian, and it stretches in the cavity of main body 2 bottom main body 2, and LED light source to be arranged on heat-conducting piece 6 and to be electrically connected with power supply 4.This LED light source comprises aluminium base 7 and LED luminescence chip 8, the LED luminescence chip 8 be laid on aluminium base 7 is electrically connected with power supply 4 by aluminium base 7.Heat-conducting seat 5 is arranged on main body 2 outer bottom, and be connected with cooling stand 1 is adjustable, heat-conducting seat 5 of the present utility model is connected with cooling stand 1 is adjustable, the adjustment of headlighting angle and scope can be realized by regulating cooling stand 1 with the relative position of heat-conducting seat 5 according to lighting demand, thus improve the practicality of headlight.Heat carrier of the present utility model and cooling stand 1 are connected to form radiator structure.
The utility model also comprises the reflector 3 be arranged in main body 2 cavity, the connector 9 be connected with main body 2 front end and Reflex Reflector 10, and wherein, Reflex Reflector 10 is connected with reflector 3 by connector 9; One end that heat carrier (i.e. heat-conducting piece 6) is arranged in main body 2 cavity is stretched in reflector 3, and it is provided with one of LED light source facing to the reflective surface of reflector 3.During work, the light of LED light source is radiated on the reflective surface of reflector 3, realizes the reflection of light.
The utility model also comprises the PCB 11 being provided with control circuit and the switch cover 13 being arranged on main body 2 rear end; Wherein, PCB 11 is arranged in the cavity of main body 2 rear end, and its control circuit is connected to form by switch 12, power supply 4 and peripheral circuit, and switch 12 is arranged on the rear board of PCB 11 and is electrically connected with LED light source.Switch cover 13 and main body 2 are rotatably connected and are provided with the shifting part 16 for toggle switch 12, and during work, switch cover 13 rotates relative to main body 2 and realizes shifting part 16 toggle switch 12 to control the on/off of LED light source.In switch cover 13 and PCB 11, the combination design of switch 12 is very ingenious, the practicality of further this headlight of raising, namely this switch cover 13 can be used as the bonnet of headlight, can be used as again the parts of contact-making switch 12 to control illumination or the closedown of headlight, thus improves the convenience of this headlight use.In order to protect the internal part of headlight main body further, be provided with dividing plate 14 between PCB 11 and switch cover 13, this dividing plate 14 is provided with through hole 15, and shifting part contacts with switch 12 through through hole 15.
Bicycle headlight of the present utility model is simple and compact for structure and practical, this bicycle headlight composition and convenient disassembly, it is assembling like this: the heat-conducting piece 6 being provided with LED light source extend in the cavity of main body 2 bottom main body 2, and LED light source is electrically connected with power supply 4 and switch 12; Reflector 3 is arranged in the cavity of main body 2 front end, and makes heat-conducting piece 6 be provided with one of LED light source facing to the reflective surface of reflector 3; Reflex Reflector 10 to be connected with reflector 3 by connector 9 and to be arranged on main body 2 front end; Be connected with cooling stand 1 is adjustable with the heat-conducting seat 5 of heat-conducting piece 6 one; Final switch lid 13 is connected the assembling that can realize bicycle headlight with main body 2 rear end thereof.
The radiating principle of the utility model bicycle headlight is such: the radiating mode that the heat radiation employing heat transfer of this headlight and thermal convection current combine carries out the heat radiation of LED light source.Wherein, heat conducting and radiating mode to be delivered to by the heat that LED light source produces on connected cooling stand 1 and the cycle frame that is connected with cooling stand 1 by heat carrier to carry out heat conducting and radiating, and in this bicycle headlight, the heat transfer direction of the heat that LED light source produces is: LED luminescence chip 8-aluminium base 7-heat-conducting piece 6-heat-conducting seat 5-cooling stand 1-cycle frame.The radiating mode of thermal convection current is in bicycle running process, carries out thermal convection current heat radiation by the convection current of air to cooling stand 1 and heat carrier.In two kinds of radiating modes, heat carrier and cooling stand 1 are connected to form radiator structure, cooling stand 1 and heat carrier play an important role, connection between cooling stand 1 and heat carrier not only can play the structural connection of headlight, and can increasing heat radiation area, thus improve radiating efficiency and the validity of heat transfer and thermal convection current.
Relative to the heat-radiation heat-dissipating mode of headlight in prior art, the thermal gradient too high phenomenon causing LED light source temperature too high when the radiating mode that heat transfer of the present utility model and thermal convection current two kinds combine effectively can avoid work, the light decay of effective control LED light source and the luminous efficiency of raising LED light source, so not only can extend the working life of headlight, and brightness of illumination and the lighting power of headlight can be increased, improve practicality and the versatility of bicycle headlight, expand its scope of application and use occasion.
Embodiment two
The present embodiment and embodiment one difference are only: do not comprise switch cover and dividing plate, and switch not only can be arranged on the rear plate face of PCB, also can be arranged on the front face of PCB.The body rear of the present embodiment is provided with bonnet, the illumination or closedown that the alternate manner such as button or impeller can be adopted to contact with switch realize controlling LED light source, also can adopt the control that existing step mode realizes LED light source energising.Other structure of the present embodiment is consistent with embodiment one.
Embodiment three
The present embodiment is only with embodiment one difference: the power supply that power supply is separated with headlight, and this power supply is external power supply.Other structure of the present embodiment is consistent with embodiment one.
Embodiment four
The present embodiment and embodiment one difference are only: electric supply installation is generator, and this generator is arranged on bicycle drive shaft inside, and bicycle sends electric energy for headlight by its wheel and relatively rotating of front axle.Other structure of the present embodiment is consistent with embodiment one.
Above-described embodiment is the utility model preferably embodiment; but embodiment of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (10)
1. a bicycle headlight, throwing light on for being arranged on cycle frame, it is characterized in that: comprise the cooling stand, main body, heat carrier, LED light source and the electric supply installation that are connected with cycle frame; Described heat carrier one end is stretched in the cavity of main body, and LED light source to be arranged on the heat carrier in cavity and to be electrically connected with electric supply installation; The described heat carrier other end is arranged on body exterior and is connected with cooling stand; Described heat carrier and cooling stand are connected to form radiator structure.
2. bicycle headlight according to claim 1, is characterized in that: described heat carrier is connected to form by heat-conducting seat and heat-conducting piece.
3. bicycle headlight according to claim 2, it is characterized in that: described heat carrier one end is stretched in the cavity of main body, LED light source is arranged on to be electrically connected on the heat carrier in cavity and with electric supply installation and refers to: described heat-conducting piece stretches in the cavity of main body from bottom part body, and LED light source to be arranged on heat-conducting piece and to be electrically connected with electric supply installation.
4. bicycle headlight according to claim 2, is characterized in that: the described heat carrier other end is arranged on body exterior and is connected with cooling stand and refers to: described heat-conducting seat is arranged on main body outer bottom, and is connected with cooling stand is adjustable.
5. bicycle headlight according to claim 1, is characterized in that: also comprise the reflector be arranged in body cavity; One end that heat carrier is arranged in body cavity is stretched in reflector, and it is provided with one of LED light source facing to the reflective surface of reflector.
6. bicycle headlight according to claim 5, is characterized in that: also comprise the connector and Reflex Reflector that are connected with body front end, described Reflex Reflector is connected with reflector by connector.
7. bicycle headlight according to claim 1, is characterized in that: also comprise the circuit board being provided with control circuit, and described circuit board is arranged in the cavity of body rear; Described electric supply installation is power supply, and control circuit is connected to form by switch, power supply and peripheral circuit, switch-linear hybrid circuit board rear board and be electrically connected with LED light source.
8. bicycle headlight according to claim 7, it is characterized in that: also comprise the switch cover being arranged on body rear, described switch cover and main body are rotatably connected and are provided with the shifting part for toggle switch, during work, switch cover realizes shifting part toggle switch to control the on/off of LED light source relative to body rotation.
9. bicycle headlight according to claim 8, is characterized in that: be provided with dividing plate between described circuit board and switch cover, and described dividing plate is provided with through hole, and shifting part contacts with switch through through hole.
10. bicycle headlight according to claim 1, is characterized in that: described heat-conducting piece is aluminium heat-conducting piece; Described electric supply installation is power supply or generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520023196.6U CN204404018U (en) | 2015-01-13 | 2015-01-13 | A kind of bicycle headlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520023196.6U CN204404018U (en) | 2015-01-13 | 2015-01-13 | A kind of bicycle headlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204404018U true CN204404018U (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520023196.6U Active CN204404018U (en) | 2015-01-13 | 2015-01-13 | A kind of bicycle headlight |
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| Country | Link |
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| CN (1) | CN204404018U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163315A (en) * | 2018-05-07 | 2019-01-08 | 嘉善声光电子有限公司 | A kind of construction of switch of bicycle lamp |
-
2015
- 2015-01-13 CN CN201520023196.6U patent/CN204404018U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163315A (en) * | 2018-05-07 | 2019-01-08 | 嘉善声光电子有限公司 | A kind of construction of switch of bicycle lamp |
| CN109163315B (en) * | 2018-05-07 | 2020-06-16 | 嘉善声光电子有限公司 | Switch structure of bicycle lamp |
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