CN214700407U - LED projection lamp - Google Patents

Abstract

The utility model discloses a LED profection lamp includes: the LED lamp comprises a lamp shell, a group of lamp cups arranged on the lower edge of the lamp shell, a group of heat dissipation modules arranged on the upper edge of the lamp shell, and a substrate provided with a plurality of LED bulbs and attached below the heat dissipation modules; the heat dissipation module is a three-dimensional phase change far-end heat dissipation device and is provided with a heat absorption cavity, a heat dissipation cavity, and a gas guide pipe and a fluid sedimentation pipe which are communicated with the heat absorption cavity and the heat dissipation cavity. Compared with the prior art, the heat source generated by the LED bulb is conducted to the working fluid in the heat absorption cavity by the substrate, the working fluid is vaporized into a gas state and then is sprayed into the heat dissipation cavity through the gas guide pipe, the heat dissipation fins of the working fluid exchange heat with air, and the working fluid is condensed into a liquid state and then flows back to the heat absorption cavity through the fluid sedimentation pipe so as to continuously circulate the phase change of the working fluid; because the phase change circulation of the working fluid can quickly take away the heat of the LED bulb, the utility model can achieve the benefits of high power, low energy consumption and quick heat dissipation.

Description

LED projection lamp

[ technical field ] A method for producing a semiconductor device

The utility model relates to a profection lamp technical field indicates especially to relate to and use the LED bulb to connect three-dimensional phase change far-end heat dissipation module, makes it have a high power LED profection lamp of rapid heat dissipation benefit.

[ background of the invention ]

LED projectors are mainly used for decorative lighting of buildings and for light conversion or illumination required for stage performances. When the LED projection lamp irradiates in different directions, the phenomenon that heat cannot be dissipated in some directions often occurs, and if heat is accumulated continuously, the reliability and the service life of the LED projection lamp will be affected. Therefore, the LED projection lamp can uniformly dissipate heat in different angle directions, which is the most necessary problem in the technical field of projection lamps.

Fig. 1-2 show the invention patent of taiwan I438378 entitled "an LED projection lamp", which mainly aims at improving the problem of uniform heat dissipation of the LED projection lamp and comprises: a heat sink 91, a lamp cup 92, an LED module 93, a lens 94, a first thermal conduction set 95, a fixing plate 96, a fixing device 97, and a second thermal conduction set 98; the heat dissipation device 91 has a trumpet-shaped cavity 911 and a peripheral heat dissipation fin 913, the lamp cup 92 is disposed at the inner edge of the trumpet-shaped cavity 911, the LED module 93 is disposed at the bottom edge of the lamp cup 92, and the lens 94 is disposed at the front edge of the lamp cup 92; the first heat conduction set 95 is attached to the outer edge of the horn-shaped inner cavity 911, so that heat emitted by the LED module 93 can be transferred to the heat dissipation fins 913 through the first heat conduction set 95; the second heat conduction set 98 is disposed on the back side of the LED module 93, and the heat generated by the second heat conduction set 98 is transferred to the heat dissipation fins 913. Because two sets of heat conduction sets are used to exert a synergistic effect, the first heat conduction set 95 and the second heat conduction set 98 can jointly achieve a complete heat dissipation effect no matter the projector lamp is irradiated at any angle upwards or downwards.

The first heat conduction set 95 and the second heat conduction set 98 are both configured to conduct heat to the heat dissipation fins 913 through mutual contact of the components, and then take away the heat of the heat dissipation fins 913 through the air around the heat dissipation fins; however, such a heat transfer method will reduce the convection of the peripheral air, so that the heat is rapidly accumulated to slow down the cooling.

[ Utility model ] content

The utility model discloses aim at overcoming prior art not enough, provide one kind and install three-dimensional phase change far-end heat abstractor in the heat dissipation space of lamp body, make the LED profection lamp reach high power, low power consumption and have radiating benefit rapidly.

In order to achieve the above object, the present invention adopts the technical means comprising: the lamp shell is a hollow barrel-shaped body with openings at the upper edge and the lower edge, and the inner edge of the lamp shell is provided with a heat dissipation space; the lamp cup is arranged at the lower edge of the heat dissipation space of the lamp shell and is provided with a horn-shaped wall surface, an upper opening part and a lower opening part, and the lower opening part is provided with a mirror surface; the heat dissipation module is assembled at the upper edge of the heat dissipation space of the lamp shell, and the bottom edge of the heat dissipation module penetrates through the upper opening part of the lamp cup; the substrate and the plurality of LED bulbs arranged below the substrate are attached below the heat dissipation module; the heat radiation module is a three-dimensional phase change far-end heat radiation device, and comprises: the heat absorption cavity is filled with a working fluid, and the bottom of the heat absorption cavity is in contact with the substrate; the heat sink comprises a heat sink cavity, wherein a plurality of heat dissipation fins are arranged above the heat sink cavity, the lower edge of the heat sink cavity is connected with a gas guide tube and two symmetrical fluid settling tubes which are arranged on two sides of the gas guide tube, and the gas guide tube and the fluid settling tubes are respectively communicated with the heat sink cavity.

Therefore, the light source generated by the LED bulbs projects outwards through the mirror surface, the heat source generated by the LED bulbs is conducted to the heat absorption cavity from the substrate, the working fluid is vaporized from a liquid state to a gas state and is sprayed upwards through the gas guide pipe to be rapidly and uniformly diffused into the heat dissipation cavity, the heat dissipation fins are utilized to carry out heat exchange with the external air, the working fluid in the heat dissipation cavity is condensed from the gas state to the liquid state and flows back to the heat absorption cavity through the fluid sedimentation pipe to circulate, and the working fluid is continuously circulated to carry out liquid and gaseous phase change, so that the heat source generated by the LED bulbs achieves the benefit of rapid heat dissipation phase change through the three-dimensional heat dissipation module.

Preferably, in the present invention, the cross section of the gas guiding tube is a tapered tube with a narrow top and a wide bottom.

Preferably, in the present invention, a check valve is respectively disposed at a communication position between the fluid settling tube and the heat absorption cavity.

The utility model discloses a high power LED profection lamp has following beneficial effect:

the utility model discloses install the heat dissipation module of a set of three-dimensional phase change in the heat dissipation space of lamp body, consequently, the LED bulb of group setting in the base plate lower edge, the heat source that its produced will be conducted to the working fluid in the heat absorption cavity by the base plate, makes it vaporize into the gaseous state by liquid state, sprays to the heat dissipation cavity through the gas guide tube in, recycles heat dissipation fin and outside air heat exchange, and the rethread fluid settling pipe flows back to this heat absorption cavity and lasts the circulation phase change after condensing into liquid state; because the phase change circulation of the working fluid can quickly take away heat, the projection lamp connected with the three-dimensional phase change heat dissipation module can achieve the benefits of high power, low energy consumption and quick heat dissipation.

[ description of the drawings ]

FIG. 1: is a combined appearance diagram of a common LED projection lamp.

FIG. 2: is a combined cross-sectional view of a commonly used LED projection lamp.

FIG. 3: do the utility model discloses the combination elevation of high power LED profection lamp.

FIG. 4: do the utility model discloses the schematic diagram of its working fluid phase change of high power LED profection lamp.

[ notation ] to show

10: lamp shell

11: heat dissipation space

20: lamp cup

21: wall surface

22: upper opening part

23: lower opening part

24: outer flange

25: mirror surface

30: heat radiation module

31: bottom edge

32: heat absorption cavity

33: heat dissipation cavity

34: heat radiation fin

35: gas guide tube

36: fluid settling tube

37: check valve

41: substrate

42: LED bulb

100: high-power LED projection lamp

H: heat source

L: liquid state

V: gaseous state

W: working fluid

[ detailed description ] embodiments

First, please refer to fig. 3, which illustrates the structure of the high power LED projection lamp 100 of the present invention, including: a lamp housing 10, the lamp housing 10 is a hollow barrel with openings at the upper and lower edges, the inner edge of the lamp housing 10 has a heat dissipation space 11; a lamp cup 20 assembled at the lower edge of the heat dissipation space 11 of the lamp housing 10, the lamp cup 20 having a trumpet-shaped wall surface 21, an upper opening 22, and a lower opening 23, and the lower opening 23 having an outer flange 24 for assembling a mirror 25; a heat dissipation module 30 assembled on the upper edge of the heat dissipation space 11 of the lamp housing 10, and the bottom edge 31 of the heat dissipation module 30 is disposed through the upper opening 22 of the lamp cup 20; a substrate 41 and a plurality of LED bulbs 42 disposed thereunder are attached to the bottom edge 31 of the heat sink module 30, and the light generated by the LED bulbs 42 is focused through the mirror 25.

The heat dissipation module 30 is a three-dimensional phase-change remote heat dissipation device, and includes: a heat absorbing cavity 32 located above the bottom edge 31 of the heat dissipating module 30 for filling a working fluid W, and the bottom of the heat absorbing cavity 32 is in contact with the substrate 41; a heat dissipation chamber 33, on which plural heat dissipation fins 34 are installed, and the lower edge is connected to a gas guiding tube 35 and two symmetrical fluid settling tubes 36 disposed on both sides thereof, and the gas guiding tube 35 and the fluid settling tubes 36 are respectively communicated with the heat absorption chamber 32. In order to improve the thermosiphon effect, the cross section of the gas guide tube 35 is designed into a tapered tube body with a narrow top and a wide bottom; furthermore, in order to prevent the working fluid W from flowing into the fluid settling tube 36 from the heat absorption cavity 32, a check valve 37 is further disposed at the connection between the fluid settling tube 36 and the heat absorption cavity 32.

Fig. 4 shows a circulating state of the working fluid of the high power LED projector 100 of the present invention, in which the phase change is performed in the three-dimensional phase change heat dissipation module 30; since the plurality of LED bulbs 42 are mounted on the lower edge of the substrate 41, and the upper edge of the substrate 41 contacts with the bottom of the heat absorption cavity 32, the heat source H generated by the LED bulb 42 is conducted to the working fluid W in the heat absorption cavity 32 via the substrate 41, so that the working fluid W is vaporized from the liquid state L into the gaseous state V, and flows upward in the gas guiding tube 35 by using thermal siphon effect (thermal siphon), and sprays upward at high pressure to rapidly and uniformly diffuse into the heat dissipation cavity 33, and then uses the heat dissipation fins 34 to exchange heat with the surrounding cold air, the working fluid W in the heat dissipation chamber 33 will condense from the gas V to the liquid L, and then flow back to the heat absorption chamber 32 through the fluid settling tube 36 for circulation, further, the working fluid W is continuously circulated to perform a phase change between the liquid L and the gas V, the heat source H generated by the LED bulb 42 can achieve the benefit of fast heat dissipation by the three-dimensional phase change type of the heat dissipation module 30.

Because the utility model discloses a set of three-dimensional phase change's heat dissipation module 30 is installed to 11 in the heat dissipation space of lamp body 10, consequently, the LED bulb 42 of group setting in the base plate 41 lower edge, the heat source H that its produced will be conducted to the working fluid W in the heat absorption cavity 32 by base plate 41, make it vaporize into gaseous state V by liquid L, spray to heat dissipation cavity 33 through gas guide tube 35 in, reuse heat dissipation fin 34 and outside air heat exchange, after the working fluid W in the heat absorption cavity 32 condenses into liquid L, see through this fluid settling tube 36 backward flow to this heat absorption cavity 32 and circulate the phase change continuously again; since the phase change cycle of the working fluid W can rapidly take away heat, the projector connected to the three-dimensional phase change heat dissipation module 30 can achieve high power, low power consumption and rapid heat dissipation.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the spirit and scope of the invention.

Claims (3)

1. An LED projector lamp, comprising:

the lamp shell is a hollow barrel-shaped body with an opening at the upper edge and the lower edge, and the inner edge of the lamp shell is provided with a heat dissipation space;

the lamp cup is arranged at the lower edge of the heat dissipation space of the lamp shell and is provided with a horn-shaped wall surface, an upper opening part and a lower opening part, and the lower opening part is provided with a mirror surface;

the heat dissipation module is assembled at the upper edge of the heat dissipation space of the lamp shell, and the bottom edge of the heat dissipation module penetrates through the upper opening part of the lamp cup; the substrate and the plurality of LED bulbs arranged below the substrate are attached below the heat dissipation module;

the heat radiation module is a three-dimensional phase change far-end heat radiation device, and comprises: the heat absorption cavity is filled with a working fluid, and the bottom of the heat absorption cavity is in contact with the substrate; the heat sink comprises a heat sink cavity, wherein a plurality of heat dissipation fins are arranged above the heat sink cavity, the lower edge of the heat sink cavity is connected with a gas guide tube and two symmetrical fluid settling tubes which are arranged on two sides of the gas guide tube, and the gas guide tube and the fluid settling tubes are respectively communicated with the heat sink cavity.

2. The LED projector as claimed in claim 1, wherein the gas guide tube has a cross section of a tapered tube with a narrow top and a wide bottom.

3. The LED projector as claimed in claim 1, wherein a check valve is disposed at each of the connection portions of the fluid settling tube and the heat absorbing chamber.

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