CN104896334A

CN104896334A - Heat-radiation lamp

Info

Publication number: CN104896334A
Application number: CN201510315956.5A
Authority: CN
Inventors: 徐静
Original assignee: Suzhou Rui Qi Electronics Co Ltd
Current assignee: Shenzhen Jijia Photoelectric Co ltd
Priority date: 2015-06-10
Filing date: 2015-06-10
Publication date: 2015-09-09
Anticipated expiration: 2035-06-10
Also published as: CN104896334B

Abstract

The invention relates to a heat-radiation lamp. The heat-radiation lamp comprises a lampshade and an LED chip; a heat-radiation cavity is fixedly installed on the LED chip; a rotary shaft perpendicular to the LED chip is fixedly installed on the axis of heat-radiation cavity; a cooling fan disposed on the rotary shaft in a sleeving manner is rotationally installed in the heat-radiation cavity; a circumferential wall of the heat-radiation cavity is provided with heat-radiation holes, a photosensitive switch is further installed on the circumferential wall; an electromagnetic element is fixedly installed above the heat-radiation cavity; the rotary shaft is further successively provided with an air bag ring, a coil spring made of a memory metal, and a speed-limit ring from bottom to top; the air bag ring and the coil spring only can perform translation up and down along the rotary shaft, and the speed-limit ring can perform rotation and translation along the rotary shaft; and an outer ring circumference of the speed-limit ring extends downward and contacts fan blades. The heat-radiation lamp can accelerate air convection and achieve efficient heat radiation; and the heat-radiation lamp can automatically adjust a heat-radiation speed according to a lamp bulb calorific value and be energy-saving and environmental-friendly.

Description

A kind of thermal louver

Technical field

The present invention relates to a kind of lighting, especially, is a kind of LED.

Background technology

Along with the development of science and technology, traditional light fixture is replaced by LED lamp gradually; Compared to traditional incandescent lamp, LED lamp is energy-conserving and environment-protective more, longer service life; It belongs to cold light source luminous type, and structure is more stable, is convenient to transport, installs, be not afraid of vibration; Luminescence can not stroboscopic, effectively eliminates the visual fatigue that conventional lamp stroboscopic brings; But it also has the deficiency of self, while it efficiently work, produce more heat, use slightly for a long time and LED chip will be made to generate heat, have a strong impact on the service life of LED; Mostly traditional LED, in order to solve heat dissipation problem, is to be provided with fin at lamp socket place, is transmitted rapidly by the heat that LED produces, and expand the contact area of fin and air by the good thermal conductivity of metal, and then accelerates heat radiation; But because the heat transfer rate of air is comparatively slow, the hot-air around fin cannot flow fast, therefore, air, as wrapped up heat-insulation layer around fin, makes LED cannot high efficiency and heat radiation.

Summary of the invention

For the problems referred to above, the invention provides a kind of thermal louver, this thermal louver can accelerate cross-ventilation, realizes high efficiency and heat radiation, and automatically can regulate radiating rate according to bulb caloric value, energy-conserving and environment-protective.

For solving the problem, the technical solution adopted in the present invention is: this thermal louver includes lampshade and LED chip; Heat dissipation cavity is installed with above described LED chip; The axis of described heat dissipation cavity is installed with the rotating shaft vertical with described LED chip; In described heat dissipation cavity, be rotatablely equipped with the heat emission fan be set in described rotating shaft, described heat emission fan includes four flabellums made by ferrimagnet; The perisporium of described heat dissipation cavity offers louvre, described perisporium is also provided with photosensitive switch; The electromagnet element be electrically connected with described photosensitive switch is installed with above described heat dissipation cavity; In described rotating shaft, be also arranged with air pocket rings, the disc spring made by memory metal and speed limit ring successively from top to bottom; Described air pocket rings and described disc spring only can along described rotating shaft upper and lower translations, and described speed limit ring can along described axis of rotation and translation; The outer shroud circumference downward-extension contact described flabellum of described speed limit ring; Rubber layer is had at the lower surface note in the outer shroud week of described speed limit ring.

The invention has the beneficial effects as follows: when LED chip normal illumination, the top of LED chip produces more heat transfer, and this heat makes described air pocket rings and disc spring heat up; When the temperature of disc spring arrives the phase transition temperature of memory metal, described disc spring is curled up and is expanded outwardly, and disc spring drives the speed limit ring above disc spring to rotate by rubbing action, and described speed limit ring drives described flabellum slowly to rotate by the friction of rubber layer; When flabellum turns to just to described photosensitive switch, the luminous flux at photosensitive switch place diminishes, photosensitive switch electric conduction magnet device; Electromagnet element attracts the flabellum closed on by magneticaction, accelerate flabellum; When flabellum turns over light-sensitive element, the circuit of electromagnet element disconnects, and described flabellum is rotated further by inertia, and when having flabellum again through photosensitive switch, electromagnet element accelerates flabellum again; Now flabellum fast rotational under electromagnet element periodically acts on; Hot-air above LED chip is discharged from louvre by flabellum, accelerates the convection current of air, realizes the high efficiency and heat radiation of light fixture.

When this thermal louver temperature is higher, described air pocket rings expanded by heating also pushes disc spring and speed limit ring along described rotating shaft upwards translation, and due to translation on speed limit hoop, the frictional resistance between the outer shroud week of speed limit ring and flabellum reduces, the now corresponding increase of the rotating speed of flabellum; After temperature reduces, air pocket rings restores to the original state, and speed limit ring moves down along rotating shaft, and described outer shroud week increases with flabellum frictional force, and then makes flabellum rotation slowing; Structure of the present invention is simple, and the adjustment without the need to electronic component can control the radiating rate of flabellum automatically, more environmental protection, science.

After this thermal louver quits work, electromagnet element open circuit; LED chip, disc spring, air pocket rings are lowered the temperature gradually; Air pocket rings cooling retraction impels flabellum to slow down, and simultaneously when the temperature of disc spring is down to below phase transition temperature, disc spring restores to the original state and tightens up in trend of curling up, and now this thermal louver resets completely.

As preferably, the angle of the line between the line between described electromagnet element, rotating shaft and described photosensitive switch, rotating shaft is 91-95 °; This angle can ensure when flabellum block photosensitive switch, electric conduction magnet device circuit time, have flabellum just to press close to electromagnet element, thus ensure electromagnet element can accelerate more efficiently flabellum rotate.

As preferably, described speed limit ring adopts transparent material to make; So that whether the flabellum can observed clearly in thermal louver rotates, and then judge that whether the heat sinking function of thermal louver is normal.

Accompanying drawing explanation

Fig. 1 is that the longitudinal direction of this thermal louver embodiment partly cuts open structural representation.

Fig. 2 embodiment illustrated in fig. 1 looks up structural representation.

Fig. 3 is the structural representation of middle disc spring embodiment illustrated in fig. 1.

Detailed description of the invention

Embodiment

In embodiment shown in Fig. 1 to Fig. 3, this thermal louver includes lampshade 1 and LED chip 2; Described lampshade 1 fixed cover is located at the below of LED chip 2, above described LED chip 2, be installed with heat dissipation cavity 3; The axis of described heat dissipation cavity 3 is installed with the rotating shaft 4 vertical with described LED chip 2; In described heat dissipation cavity 3, be rotatablely equipped with the heat emission fan be set in described rotating shaft 4, described heat emission fan includes four flabellums made by ferrimagnet 5; The perisporium of described heat dissipation cavity 3 offers louvre, described perisporium is also provided with photosensitive switch 31; The electromagnet element 6 be electrically connected with described photosensitive switch 31 is installed with above described heat dissipation cavity 3; The angle of the line between the line between described electromagnet element 6, rotating shaft 4 and described photosensitive switch 31, rotating shaft 4 is 91-95 °; As shown in angle a in Fig. 2; In described rotating shaft 4, be also arranged with air pocket rings 7, the disc spring 8 made by memory metal and speed limit ring 9 from top to bottom successively; Described air pocket rings 7 and described disc spring 8 only can along described rotating shaft 4 upper and lower translations, and described speed limit ring 9 can rotate and translation along described rotating shaft 4; Contact surface rough surface described in described disc spring 8 box between speed limit ring 9; The outer shroud week 91 of described speed limit ring 9 is to downward-extension and contact described flabellum 5; Described speed limit ring 9 adopts transparent material to make; Rubber layer is had at the lower surface note in the outer shroud week 91 of described speed limit ring 9.

When LED chip 2 normal illumination, the top of LED chip 2 produces more heat transfer, and this heat makes described air pocket rings 7 and disc spring 8 heat up; When the temperature of disc spring 8 arrives the phase transition temperature of memory metal, described disc spring 8 is out of shape in high-temperature-phase shape, namely described disc spring 8 is curled up and expands outwardly, disc spring 8 drives the speed limit ring 9 above disc spring 8 to rotate by rubbing action in deformation process, the outer shroud week 91 contact flabellum 5 of described speed limit ring 9 simultaneously, namely described speed limit ring 9 drives described flabellum 5 slowly to rotate, and namely completes the startup of flabellum 5; When flabellum 5 turns to just to described photosensitive switch 31, the luminous flux at photosensitive switch 31 place diminishes, photosensitive switch 31 electric conduction magnet device 6; Electromagnet element 6 attracts the flabellum 5 closed on by magneticaction, accelerate flabellum 5; When flabellum 5 turns over light-sensitive element, the circuit of electromagnet element 6 disconnects, and described flabellum 5 is rotated further by inertia, and when there being flabellum 5 again through photosensitive switch 31, electromagnet element 6 is again switched on also accelerates flabellum 5 again; Now flabellum 5 fast rotational under electromagnet element 6 periodically effect, now flabellum 5 starts normal work; Hot-air above LED chip 2 is discharged from louvre by the flabellum 5 rotated, and accelerates the convection current of air, realizes the high efficiency and heat radiation of light fixture.

In the present embodiment, the angle of the line between the line between described electromagnet element 6, rotating shaft 4 and described photosensitive switch 31, rotating shaft 4 is 91-95 °; This angle can ensure when flabellum 5 block photosensitive switch 31, electric conduction magnet device 6 circuit time, have flabellum 5 just to press close to electromagnet element 6, thus ensure that electromagnet element 6 can accelerate flabellum 5 more efficiently and rotates.

When this thermal louver temperature is higher, described air pocket rings 7 expanded by heating also pushes disc spring 8 and speed limit ring 9 along described rotating shaft 4 upwards translation, due to speed limit ring 9 upwards translation, the frictional resistance of all 91 pairs of flabellums 5 of outer shroud of speed limit ring 9 reduces, the now corresponding increase of the rotating speed of flabellum 5; After temperature reduces, air pocket rings 7 bounces back, and speed limit ring 9 moves down along rotating shaft 4, and described outer shroud week 91 increases with flabellum 5 frictional force, and then makes flabellum 5 rotation slowing; Structure of the present invention is simple, and the adjustment without the need to electronic component can control the radiating rate of flabellum 5 automatically, more environmental protection, science.

In the present embodiment, speed limit ring 9 adopts transparent material to make, than that with observe flabellum 5 rotating speed, and then understand thermal louver whether proper heat reduction; In addition, while flabellum 5 quick rotation, described speed limit ring 9 also can slowly rotate under the drive of flabellum 5 reaction force, and now speed limit ring 9 rotates relative to rotating shaft 4 and disc spring 8; Namely the rotation by observing speed limit ring 9 also can know flabellum 5 velocity of rotation of this thermal louver inside by inference.

After this thermal louver quits work, electromagnet element 6 open circuit; LED chip 2, disc spring 8, air pocket rings 7 are lowered the temperature gradually; Air pocket rings 7 retraction of lowering the temperature impels flabellum 5 to slow down, and simultaneously when the temperature of disc spring 8 is down to below phase transition temperature, disc spring 8 restores to the original state and tightens up in trend of curling up, and now this thermal louver resets completely.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. a thermal louver, this thermal louver includes lampshade (1) and LED chip (2); Heat dissipation cavity (3) is installed with in the top of described LED chip (2); It is characterized in that: on the axis of described heat dissipation cavity (3), be installed with the rotating shaft (4) vertical with described LED chip (2); In described heat dissipation cavity (3), be rotatablely equipped with the heat emission fan be set in described rotating shaft (4), described heat emission fan includes four flabellums made by ferrimagnet (5); The perisporium of described heat dissipation cavity (3) offers louvre, described perisporium is also provided with photosensitive switch (31); The electromagnet element (6) be electrically connected with described photosensitive switch (31) is installed with in the top of described heat dissipation cavity (3); In described rotating shaft (4), be also arranged with air pocket rings (7), the disc spring (8) made by memory metal and speed limit ring (9) from top to bottom successively; Described air pocket rings (7) and described disc spring (8) only can along described rotating shaft (4) upper and lower translations, and described speed limit ring (9) can be rotated and translation along described rotating shaft (4); The outer shroud week (91) of described speed limit ring (9) is to downward-extension and contact described flabellum (5); Rubber layer is had at the lower surface note in the outer shroud week (91) of described speed limit ring (9).

2. thermal louver according to claim 1, is characterized in that: the angle of the line between the line between described electromagnet element (6), rotating shaft (4) and described photosensitive switch (31), rotating shaft (4) is 91-95 °.

3. thermal louver according to claim 1 and 2, is characterized in that: described speed limit ring (9) adopts transparent material to make.