CN203892911U - LED (light-emitting diode) lamp comprising LEDs with luminous surfaces attached to hot end of glass heat pipe - Google Patents

Abstract

The utility model discloses an LED (light-emitting diode) lamp comprising LEDs with luminous surfaces attached to the hot end of a glass heat pipe. The LED lamp comprises the glass heat pipe, the LEDs, a driving power supply, an interface for electrical connection with the outside, and a control system, and is characterized in that each part of a pipe shell of the glass heat pipe is melted-sealed into a whole; the luminous surfaces of the LEDs are attached to the hot end of the glass heat pipe to form heat transfer connection. According to the LED lamp comprising the LEDs with the luminous surfaces attached to the hot end of the glass heat pipe, the hot end of the glass heat pipe is insulated, and can directly form heat transfer connection with the LEDs, and the shortest heat transfer path from the LEDs to the environment only comprises heat transfer rubber or elastic heat-conducting films between the LEDs and the glass heat pipe, and the glass heat pipe under the condition of direct heat radiation through the cold end of the glass heat pipe; folds are formed at the cold end of the glass heat pipe, so that the heat radiation area can be greatly enlarged, and the requirement of a radiator on the heat radiation area can be met; glass is stable in performance and high in weather resistance and air tightness; the heat pipe is manufactured from high-transparency glass, so that brand new visual experiences comprising the luminous effect like that of a crystal chandelier can be created.

Description

The LED light fixture in LED light-emitting area laminating glass heat pipe hot junction

Technical field

The utility model relates to the LED light fixture in LED light-emitting area laminating glass heat pipe hot junction.LED is that the English of lasing fluorescence diode is called for short, and can be regarded as the generally acknowledged technical term of the art.

Background technology

Adopt the LED light fixture of gravity assisted heat pipe, its general configuration should be that the hot junction heat transfer below heat pipe connects several LED.The Main Function that heat pipe here rises should be to realize heat flow density conversion and heat radiation.Relevant heat flow density is transformed to roughly and is transformed to approximately 0.06 watt/square centimeter from approximately 0.5 watt/square centimeter.

Investigate existing LED light fixture, all get 1 centimetre of 2(0.5*0.7*2+0.1.25*(7+5+7+5 by surface conductive entered environment, LED all surfaces are long-pending for one of them long * is wide for the LED of 5*7 millimeter, 0.6 watt of general power, light efficiency 21% and the energy except luminous)), its heat flow density of loading of dispelling the heat is 0.6*(1-0.21) 474 watts/centimetre 2 of/1=0..If do not adopt radiator, the surface temperature of LED can exceed 100 DEG C.

Again, be the LED with radiator of 10 watts for a heat radiation load, in the flat cubic centimetre of area of dissipation 200 of its spreader surface, its heat radiation power density is 0. 05 watts/centimetre 2.Reference in contrast: the expose to the sun peak strength of penetrating of sunshine is about 1 Qian Wa/㎡ and closes 0.1 watt/centimetre 2.25 watts of incandescent light bulb that surface area is 170 centimetre 2, because glass cell-shell stops and absorption ultrared, obviously rise the temperature on glass cell-shell surface.Here, get 10 watts of heat radiation powers by glass cell-shell, its heat radiation power density of conducting by glass cell-shell is 0.0588 watt/centimetre 2 of 10/170 ≈.

The computing formula of object heat radiation power and heat-delivery surface temperature rise is:

Q=K*ΔT*S…………

In formula 1, Q is heat radiation power, and dimension is watt; K is the heat transfer coefficient from glass heat pipe cold end surface to air, and dimension is watt/(DEG C * ㎡); Δ T is the intensification that air is heated, dimension be K or DEG C; S is the area of the glass heat pipe cold junction that contacts with air, and dimension is square metre.

By Q=10, K=23 watt/(DEG C * ㎡), S=0.02 ㎡ substitution; 21.74 DEG C of the temperature rise Δ T ≈ of described heat dissipation model.In the time of S=0.017 ㎡, obtain 25.58 DEG C of temperature rise Δ T ≈.Here all heat radiation load all with almost average temperature by with air heat-exchange entered environment.In fact, the numerical value of Coefficient K also comprises that with surface state clean conditions is relevant with emissivity.

For LED light fixture, its heat radiation approach from LED to air is more than incandescent lamp complexity.The temperature rise value of 30 DEG C of relative LED lamp radiator surface environment temperatures is got to 21.74 DEG C, and the temperature of getting Heat Conduction Material between LED and heat pipe hot junction fall 2 DEG C, the temperature of heat pipe hot junction tube wall fall 2 DEG C, fall from heat pipe hot junction to the temperature of cold junction two phase flow heat transfer ignore, the temperature of heat pipe cold junction tube wall falls 1 DEG C, the surface temperature of known described LED will reach 30+21.74+1+2+2=56.74 DEG C.In view of the surface temperature of LED changes with environment temperature and itself heat flow density.When the peak of set environment temperature is that 30 DEG C, heat transfer coefficient are set as 23 and the maximum temperature of LED while being 64 DEG C, the glass heat pipe cold junction area that every watt of heat radiation power needs is at least 15 square centimeters; Corresponding heat flow density is 0.0667 watt/centimetre 2.Under this operating mode, the LED10 light decay of ten thousand hours is expected lower than 20%; And existing minority LED light fixture inferior only one summer light decay will reach more than 50%.

Chinese patent 2008200495178 discloses a kind of high power hot pipe LED illuminating apparatus, include LED, pedestal, heat pipe, and be provided with heat abstractor, one side of pedestal is provided with one or more than one LED, and one end of heat pipe is that hot junction is connected with described pedestal, the other end is that cold junction is connected with described heat abstractor.Directly welding or fill heat-conducting silicone grease and without heat transfer medium in the middle of other, thermal resistance is relatively little between heat pipe and pedestal, heat transfer efficiency is high.Have simple in structure, good heat dissipation effect, the feature of reliable operation.But it adopts pedestal heat transfer connection LED that electric insulation layer need to be set and realizes electrical isolation; Its metal heat pipe cold junction configuration radiating fin plate as with the heat exchange interface of air, owing to also having temperature to fall between heat pipe cold junction and radiating fin plate, and the surface temperature of radiating fin plate is inhomogeneous, thereby has increased dispel the heat link and the heat exchange thermal resistance with air; Fin produces cost and is not easy to clean; Between metal heat pipe hot junction and LED, needing withstand voltage higher insulating barrier, itself there is thermal resistance in insulating barrier.LED surface is because of large, the same thermal resistance of heat flow density, and temperature is fallen can be many greatly.Because LED is to responsive to temperature, temperature exceedes 65 DEG C of LED can very fast decline.Therefore, cut down heat transfer link and the thermal resistance of the link that reduces to conduct heat just significant.

Summary of the invention

The purpose of this utility model is the LED light fixture that LED light-emitting area laminating glass heat pipe hot junction will be provided.

The utility model is realized the technical scheme of its object: the LED light fixture of manufacturing a LED light-emitting area laminating glass heat pipe hot junction, comprise glass heat pipe, LED, driving power and with extraneous electrical connection interface, glass heat pipe comprises high-transparent glass shell, blast pipe, working medium and liquid-sucking core net; Glass heat pipe cold junction is shaped with or is not shaped with pleated; Glass heat pipe cold junction adopts or does not adopt fin.Comprise two core electric wires or bulb screw mouth connector with extraneous electrical connection interface.When described LED color or colour temperature are while being constant, the multiple LED that form described color or colour temperature comprise that three-primary color LED can only realize with one group of two wire and extraneous electrical connection with extraneous; When described LED color or colour temperature are while being adjustable, the multiple LED that form described color or colour temperature comprise that three-primary color LED adopts respectively one group of two wire to realize and extraneous electrical connection with extraneous separately.Make glass heat pipe shell each several part seamless melt to be sealed connect as one; The hot end surface of glass heat pipe is connected with the light-emitting area low thermal resistance of LED.

Can also make described control system comprise that three driving power controllers of governor circuit, memory, man-machine interface and interface circuit thereof, three-primary color LED and interface circuit, optical signal reception and transmitter module and interface circuit thereof, camera head microphone are subject to sound device and interface circuit and software thereof to comprise application program; Three driving power controller interface circuits of described governor circuit, memory, user-machine interface circuit, three-primary color LED, optical signal receive and be connected by bus signals by sound device interface circuit with transmitter module interface circuit and camera head microphone; Described man-machine interface comprises a touch device, and described touch device comprises the touch-screen with various background colors.

The beneficial effects of the utility model: its glass heat pipe hot junction insulation of the LED light fixture in the utility model LED light-emitting area laminating glass heat pipe hot junction can directly be conducted heat and be connected with LED, in the situation that directly dispelling the heat with glass heat pipe cold junction, the shortest heat transfer glue or elastic conducting hotting mask and the glass heat pipe only comprising between LED and glass heat pipe of its heat transfer path from LED to environment.Actual effect is: on average reduce under 50 to 70% prerequisites at heat-pipe radiator or even radiator cost, the service life of light decay 20% extending to more than 7 years for average 2 to 3 years from existing heat-pipe radiator or cast aluminium radiator product.The non-ferrous metal that cast aluminium radiator relates to is cast into major source of pollutant; And the processing of glass heat pipe can only relate to fuel gas fire head, its carrying capacity of environment is insignificant.And because carbon emission in long 3 times of service life of glass heat pipe LED light fixture, glass heat pipe radiator production process is few, environmental benefit is obvious.The glass heat pipe cold junction with bigger serface is included in glass heat pipe cold junction and makes and pleatedly can increase considerably temperature and the cost that area of dissipation further reduces LED and increase few.It is good that glass properties is stablized the extremely strong air-tightness of weatherability, and significantly improve service life compared with metal heat pipe.Adopting high-transparent glass to manufacture heat pipe can bring or keep some brand-new visual experiences to comprise the light efficiency obtaining as crystal pendant lamp.Adopting high-transparent glass to manufacture heat pipe posts the light-emitting area of LED make towards heat pipe hot junction light to see through the situation that thermotube wall illumination is applicable to shot-light, can also bring into play researching and developing can lighting at two sides the advantage of LED to realize 360 degree wholecircle round angles luminous and light efficiency is significantly improved, can also make in the light that LED sends through the diffused light part of several times reflection and transmission and upwards outwards illuminate and overcome the limitation that LED light fixture can not 360 degree illuminations by glass heat pipe tube wall, can also utilize the tube wall of glass heat pipe to play the effect of even mating plate, thereby obtain the experience of selectable additional light efficiency at wide open face heat pipe cold end surfaces making organic LED or transparent organic LED with acquisition.

Glass heat pipe is light, corrosion-resistant, good with working medium compatibility, tube wall venting more than 90% for the consistent or harmless water vapour of working fluids characteristic, can once be blow molded into net shape and comprise the pleated of formation cold end surface.

Glass heat pipe LED light fixture adopts fast wiring cable to form dismountable type structure and is convenient for changing the glass heat pipe that different shaping comprises the moulding of imitation animals and plants, increases amusement temperament and interest.High-transparent glass inside heat pipe utilizes the mobile of steam or some new contents is set and can obtain some brand-new experience.

LED circuit plate is connected with the heat transfer of glass heat pipe and LED and extraneous electrical connection provide an integrated platform for LED.

LED hole is set on LED circuit plate and makes LED directly to conduct heat and to be connected with glass heat pipe, contribute to realize heat transfer resistance and minimize.Adopt laser weld LED firm welding, can realize at normal temperatures, welding process is little to the thermal shock of glass heat pipe tube wall.

Brief description of the drawings

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is the structural representation of a LED wall lamp.

Fig. 2 is total line frame graph of a glass heat pipe LED lamp control system.

1. glass heat pipes in figure; 2.LED; 3. with extraneous electrical connection interface; 4. driving power; 5. control system; 6. man-machine interface; 61. governor circuits; 62. memories; 63. user-machine interface circuit; Three driving power controller interface circuits of 64. three-primary color LEDs; 65. optical signals receive and transmitter module interface circuit; 66. camera head microphones are subject to sound device interface circuit; 67. buses.

Detailed description of the invention

Fig. 1 provides first embodiment of the utility model.

In Fig. 1, LED wall lamp comprise jacket type glass heat pipe 1, LED2, with extraneous electrical connection interface 3, driving power 4 and control system 5.Control system 5 comprises man-machine interface 6.Between the governor circuit of man-machine interface 6 and control system 5, can adopt wireless connections.Translucent adhesive such as silica gel bonding for the light-emitting area of LED2 and jacket type glass heat pipe 1 hot junction.The light-emitting area of LED2 and glass heat pipe 1 hot junction bonding.The light that LED2 sends irradiates by the tube wall of layer glass heat pipe 1.In four surfaces of glass heat pipe 1 two-layer tube wall, there is an effect that plays above even mating plate through frosted processing.

Fig. 2 provides second embodiment of the utility model.

In Fig. 2, glass heat pipe LED lamp control system comprises that three driving power controllers of governor circuit 61, memory 62, man-machine interface and interface circuit 63 thereof, three-primary color LED and interface circuit 64, optical signal reception and transmitter module and interface circuit 65 thereof, camera head microphone are subject to sound device and interface circuit 66 and software thereof to comprise application program.Three driving power controller interface circuits 64 of described governor circuit 61, memory 62, user-machine interface circuit 63, three-primary color LED, optical signal receive and be connected by bus 67 signals by sound device interface circuit 66 with transmitter module interface circuit 65 and camera head microphone.The man-machine interface of Fig. 2 embodiment comprises a touch device.Described touch device comprises the touch-screen with various background colors.

Can comprise that the variation that application program makes the state of described LED light fixture touch touch-screen position according to user changes by software, such as user touches the redness on touch-screen, LED just sends red light.

Can comprise that the variation that application program makes the state of described LED light fixture touch touch-screen position according to user changes by software, for example user touches the acoustic control position on touch-screen, the light that LED sends intensity variation by it inquiry of replying or directly sound: " be very glad and accept owner's instruction." then user send and " please dance No. 14." sound, the microphone of LED light fixture sends " dances No. 14." sound.User says again: " start." LED light fixture sends light and the music of color change according to setting.……

Can comprise that application program makes described LED light fixture take and the image of shooting with video-corder is sent in hidden receiving-member by optical signal carrier firm automatically the turning on light of user in the time entering by software, and automatically and the person of entering engage in the dialogue: " hello." user arranges and promise according to a preconcerted arrangement.LED light fixture is by comparing to judge it is that owner enters owner and serves program with the content of prior storage, if can turn off light daytime; Can also report and remind such as take medicine to water flowers to owner and meet child and make a phone call to household.If judge that the person of entering may be uninvited guest, enter uninvited guest's program of serving and comprise direct warning and sound the alarm.

Claims (2)

1. The LED light fixture in 1.LED light-emitting area laminating glass heat pipe hot junction, comprise glass heat pipe, LED, driving power and with extraneous electrical connection interface, glass heat pipe comprises glass shell, blast pipe, working medium and liquid-sucking core net; Glass heat pipe cold junction is shaped with or is not shaped with pleated; Comprise two core electric wires or bulb screw mouth connector with extraneous electrical connection interface; When described LED color or colour temperature are while being constant, the multiple LED that form described color or colour temperature comprise that three-primary color LED can only realize with one group of two wire and extraneous electrical connection with extraneous; When described LED color or colour temperature are while being adjustable, the multiple LED that form described color or colour temperature comprise that three-primary color LED adopts respectively one group of two wire to realize and extraneous electrical connection with extraneous separately, is characterized in that the hot end surface of glass heat pipe and the light-emitting area low thermal resistance of LED are connected.
2. 2. the LED light fixture in LED light-emitting area according to claim 1 laminating glass heat pipe hot junction, is characterized in that LED(2) light-emitting area and jacket type glass heat pipe (1) hot junction translucent adhesive bond.