WO2018068367A1

WO2018068367A1 - Heat dissipating device for led lighting apparatus

Info

Publication number: WO2018068367A1
Application number: PCT/CN2016/107601
Authority: WO
Inventors: 于欢欢; 雍兴春
Original assignee: 深圳市耀嵘科技有限公司
Priority date: 2016-10-14
Filing date: 2016-11-29
Publication date: 2018-04-19
Also published as: CN206386900U

Abstract

Disclosed is a heat dissipating device (100) for an LED lighting apparatus, the heat dissipating device comprising plural heat dissipating fins (200) used for heat dissipation of the lighting apparatus, wherein each of the heat dissipating fins (200) is arranged in the shape of a fan, and a heat dissipating channel (800) is formed between each two heat dissipating fins (200). The heat dissipating fins (200) arranged in the shapes of fans enable the heat dissipating channels (800) to open in the shape of a fan, and compared with the flat plate-type heat dissipating device of the prior art, reduce wind resistance. In addition, air flows of multiple directions can be introduced into the heat dissipating channels (800), thereby improving the effect of heat dissipation. The overall space occupied is smaller, thereby saving on more materials.

Description

Radiator for LED lighting

Technical field

The present invention pertains to a cooling device for use in a lighting device or system in a lighting device, and more particularly to a heat sink shaped like a hemispherical shape.

Background technique

The heat sink used in the prior art LED lighting device is usually a flat plate heat sink, and the shape is as shown in FIG. Since the heat sink fins of the flat heat sink are all the same size and shape, even if the fins are different in size, the overall shape is flat. These flat-type radiators have different heat dissipation effects in different directions when used outdoors. When the direction of air flow is consistent with the direction of the fins of the heat sink, the heat dissipation effect is good, but when the air flow direction is perpendicular to the direction of the fins of the heat sink, only the heat radiating fins that are in contact with the outside air can dissipate heat and cannot flow the air. Introduced between the middle fins; and when the direction of air flow is perpendicular to the direction of the fins of the heat sink, the wind resistance of the heat sink is large, affecting the structural stability of the heat sink and the light fixture using the heat sink, especially in outdoor applications. Too much wind resistance will make the overall structure of the luminaire unstable and even blown off.

Noun explanation: LED is the abbreviation of English light emitting diode, Chinese meaning is LED.

Summary of the invention

The technical problem to be solved by the present invention is to avoid the disadvantages of the above-mentioned prior art LED lamp heat sink having large wind resistance and poor air flow heat dissipation performance in some scenarios, and a heat sink for LED lighting device is proposed: The heat sink includes a plurality of fins for dissipating heat of the illumination device, and the fins are arranged in a fan shape, and the heat sinks form a heat dissipation channel between the two.

The outer side of each of the fins is curved, and the outer sides of each of the fins are combined to form a shell shape.

The heat sink is in the form of a sail shape, and the inner side and the outer side of the heat sink intersect at an acute angle; the outer side length of each of the heat sinks is gradually changed, and the outer side of each of the heat sinks On the same spherical or ellipsoidal surface.

The heat sink has an elongated shape, and the outer side of each of the heat sinks comprises two segments, a segment of the outer side is curved, and another segment near the end of the heat sink is linear. The curved portion of the outer side intersects the inner side at an acute angle; after each of the fins is arranged in a fan shape, the arc segments of the outer side of each of the fins are in the same spherical or ellipsoidal surface on.

The heat sink includes a mounting plate for fixing the heat sink; the mounting plate includes a first mounting plate and a second mounting plate; and an end of each of the heat sinks is fixed on the second mounting plate. Intersecting each of the fins and the second mounting board at an angle of intersection of 80 degrees to 90 degrees; an inner side of each of the fins is fixed on the first mounting board, and each of the fins is on the first mounting board The fan is vertically arranged in a vertical arrangement.

The first mounting plate and the second mounting plate intersect at a right angle or an obtuse angle of a capital letter L; each of the heat sinks is fixed to an L-shaped installation formed by the intersection of the first mounting plate and the second mounting plate On the surface.

The second mounting plate is provided with a plurality of card slots for engaging the heat sinks; the ends of the heat sinks are locked into the card slots and are fixedly connected to the second mounting plate.

An engaging portion for engaging and connecting the heat sink and the card slot is disposed at an end of each of the fins near an outer side.

The heat sink includes an outer casing for covering the heat sinks, and the shape of the outer casing The outer edge of each of the fins is formed to conform to a shape of a spherical surface or an ellipsoidal surface; the outer casing is respectively connected to the first mounting plate and the second mounting plate, and the heat sink is covered therein.

The outer casing is provided with a through hole for connecting each of the heat sink and the heat dissipation channel to the outside.

Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The fins are arranged in a fan shape so that the heat dissipating channels are fan-shaped, which reduces the wind resistance compared with the prior art flat plate radiator; Air flow in multiple directions is introduced into the heat dissipation channel to improve the heat dissipation effect; the overall space is smaller and the material is more material-saving; 2. The heat sink formed by the combination of the sail-shaped heat sink is spherical or ellipsoidal as a whole. Compared with the prior art flat-type radiator, the shape reduces the wind resistance; 3. The heat-dissipating channel in the middle of the spherical or ellipsoidal radiator is fan-shaped, which can introduce air flow in multiple directions into the heat dissipation channel, thereby improving heat dissipation. Effect; 4, spherical or ellipsoidal heat sink, heat sink and heat sink achieve the same heat dissipation effect, occupying less space as a whole, and also saving material cost; 5. spherical shell coated on the heat sink It can cover the connection part of the heat sink and other external components, so that the connection position of the heat sink and other components is under the protection of the outer casing, and it is not easy to accumulate dust or other external pollution.

DRAWINGS

1 is a schematic axial projection view of a flat plate heat sink in the prior art;

2 is a schematic diagram of a perspective projection of a preferred embodiment of the present invention;

Figure 3 is a second schematic view of the axial projection of the preferred embodiment 1 of the present invention;

Figure 4 is a schematic view of a preferred embodiment of the second embodiment of the present invention, the first mounting plate 330 is removed;

Figure 5 is a second schematic view of the axial projection of the preferred embodiment 2 of the present invention;

Figure 6 is a schematic view of a preferred embodiment of the third embodiment of the axial projection, the first mounting plate 330 is removed;

Figure 7 is a front elevational view of a preferred embodiment 3 of the present invention;

Figure 8 is a rear perspective view of a preferred embodiment 3 of the present invention with the first mounting plate (330) removed.

detailed description

Embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

In a preferred embodiment as shown in FIGS. 2 to 5, a heat sink for an LED lighting device includes a plurality of heat sinks 200 for dissipating heat from the lighting device, each of the heat sinks 200 being arranged in a fan shape. A heat dissipation channel 800 is formed between the sheets 200.

That is, each of the fins 200 may be arranged in a fan shape, and may be a fan-shaped arrangement integrally formed into fins; or each fin may be connected to each other to form a fan-shaped shape, or even a fixed rope. The fins 200 are arranged in a fan shape. The fins are arranged in a fan shape so that the heat dissipating channels are fan-shaped, and the venting direction of each of the heat dissipating channels 800 is slightly different. Not all the vents of the heat dissipating channel 800 face in the same direction, compared with the prior art flat plate type. The heat sink reduces the wind resistance; it can introduce air flow in multiple directions into the heat dissipation channel, which improves the heat dissipation effect; the overall space is smaller and the material is saved.

In the embodiment shown in FIGS. 2 to 4, the outer side 260 of each of the fins 200 is curved, and the outer sides 260 of each of the fins 200 are combined to form a shell shape. Each of the heat dissipation passages 800 has a diverging shape from bottom to top like the interval between the stripes on the outer shape of the shell.

In the embodiment shown in FIGS. 2 to 4, the heat sink 200 is in the form of a sail shape, and the inner side 220 and the outer side 260 of the heat sink 200 intersect at an acute angle; each of the heat sinks The outer side 260 of the 200 is gradually lengthened, and the outer side 260 of each of the fins 200 is on the same spherical or ellipsoidal surface.

In other embodiments not shown in the drawings, the heat sink 200 has an elongated shape, and the outer side 260 of each of the heat sinks 200 includes two segments, and the outer side 260 One segment is curved, and another segment near the end 210 of the heat sink 200 is linear; the curved segment of the outer edge 260 and the inner edge 220 intersect at an acute angle; each of the fins 200 After being arranged in a fan shape, the arcuate segments of the outer side edges 260 of each of the fins 200 are on the same spherical or ellipsoidal surface.

In the embodiment shown in Figures 2 to 4, the heat sink further includes a mounting plate 300 for fixing the heat sink 200; the mounting plate 300 includes a first mounting plate 330 and a second mounting plate 350; The end portion 210 of the heat sink 200 is fixed on the second mounting plate 350 such that each of the heat sinks 200 and the second mounting plate 350 intersect at an angle of intersection of 80 to 90 degrees; the inner side of each of the heat sinks 200 The side 220 is fixed on the first mounting plate 330, and each of the fins 200 is vertically arranged in a fan shape on the first mounting plate 330. The angles at which the heat sinks 200 and the second mounting plate 350 intersect may be the same or different, as long as the heat dissipation channels 800 formed by the heat sinks 200 are arranged in a fan shape.

Each of the heat sinks 200 is fixed to the mounting board 300. The mounting board 300 may be a separate mounting board or a combination of a plurality of mounting boards. The shape of the mounting plate 300 may be semi-circular in shape matching the shape of the heat sink 200, but may be other shapes, such as a strip shape, as long as the mounting plate can support the heat sink 200 in a fan-shaped arrangement. The inner side 220 or the end 210 of the heat sink 200 or other parts may be fixed to the mounting board 300 as long as there is a part.

In the embodiment shown in FIGS. 2 to 4, the first mounting plate 330 and the second mounting plate 350 intersect at a right angle or an obtuse angle of a capital letter L; each of the heat sinks 200 is fixed at the first The mounting plate 330 and the second mounting plate 350 intersect to form an L-shaped mounting surface. Of course, the first mounting plate 330 and the second mounting plate 350 may also not actually intersect, as long as The extending planes of the first mounting plate 330 and the second mounting plate 350 may intersect. The angle of intersection may vary depending on the specific mounting requirements of the heat sink, and may be an acute angle in addition to a right angle and an obtuse angle. The second mounting plate 350 is in a planar shape for mounting LED lamp beads; the first mounting plate 330 is in a planar shape for the heat sink 100 to be connected to the outside.

In the embodiment shown in FIG. 2 to FIG. 4, the second mounting plate 350 is provided with a plurality of card slots 355 for engaging the heat sinks 200; the end portion 210 of the heat sink 200 is inserted into the chassis The card slot 355 is fixedly coupled to the second mounting plate 350.

In the embodiment shown in FIG. 3 to FIG. 4, the end portion 210 of each of the fins 200 is disposed near the outer side 260 with a snap portion 217 for the heat sink 200 and the card slot 355 to be snap-fitted. . The engaging portion 217 may be a protrusion or a recess. Only the case where the engaging portion 217 is a protruding portion is shown in FIG.

Of course, the card slot 355 may not be provided, so that each of the heat sinks 200 is integrally formed with the first mounting plate 330 and the second mounting plate 350, that is, each heat sink 200 is directly opposite to the first mounting plate 330 and the The second mounting plate 350 is fixedly connected as a whole.

The shape of the heat sink as a whole is a quarter-spherical shape, or the shape of the heat sink as a whole is a quarter-spherical lower cut-away portion, and the cross-section is fan-like like a quarter-spherical shape. Or the overall shape of the heat sink is a half-spherical shape, and the lower half of the heat sink is left to have a fan-like similar hemisphere. Of course, the above spherical shape can also be replaced with an ellipsoidal shape.

The preferred embodiment shown in FIGS. 6 to 8 differs from the preferred embodiment shown in FIGS. 2 to 5 in that the outer fins of each of the heat sinks 200 are arranged in a fan shape. 260 is on the same ellipsoid.

The shape of the sail-shaped fin can also be replaced with other shapes, such as the heat of the blade shape. The film may be formed as a spherical or ellipsoidal shape as long as the outer side of the heat sink can be combined, such a shape has a lower wind resistance than the prior art flat type heat sink; a spherical or ellipsoidal heat sink The middle heat dissipation channel is fan-shaped open, which can introduce air flow in multiple directions into the heat dissipation channel, which improves the heat dissipation effect; the spherical or ellipsoidal heat sink, the heat sink and the heat sink achieve the same heat dissipation effect. Smaller, and also saves on the cost of materials produced.

In the embodiment shown in FIGS. 5 to 8, the outer casing 700 for covering the fins 200 is formed, and the shape of the outer casing 700 forms a spherical or ellipsoidal shape along the outer edge of each of the fins 200. The outer casing 700 is respectively connected to the first mounting plate 330 and the second mounting plate 350, and the heat sink 200 is covered therein.

In the embodiment shown in FIG. 5 to FIG. 8 , the outer casing 700 is provided with a through hole 720 for communicating the heat dissipation fins 200 and the heat dissipation passage 800 with the outside. The through holes 720 may be one or more, and the through holes 720 may be square, circular or any other shape. When there is only one through hole 720, it is unknown in the middle of the outer casing; when the through hole 720 is plural, the outer diameter of the outer casing may be symmetrically distributed, or the position may be randomly distributed.

The spherical outer casing covered on the heat sink can cover the connection portion of the heat sink and other external components, so that the connection position of the heat sink and other components is under the protection of the outer casing, and it is not easy to be dusted or otherwise contaminated by the outside.

The above is only the embodiment of the present invention, and thus does not limit the scope of the patent of the present invention, and the equivalent structure or equivalent process transformation made by using the description of the invention and the contents of the drawings, or directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims

A heat sink (100) for an LED lighting device, comprising:

A plurality of heat sinks (200) for dissipating heat from the illumination device are arranged in a fan shape, and the heat dissipation fins (200) form a heat dissipation channel (800) between the two.
The heat sink according to claim 1, wherein

The outer side (260) of each of the fins (200) is curved, and the outer sides (260) of each of the fins (200) are combined to form a shell shape.
The heat sink according to claim 1, wherein

The heat sink (200) is in the shape of a sail, and the inner side (220) and the outer side (260) of the heat sink (200) intersect at an acute angle; each of the heat sinks (200) The outer side (260) has a gradual length, and the outer side (260) of each of the fins (200) is on the same spherical or ellipsoidal surface.
The heat sink according to claim 1, wherein

The heat sink (200) has an elongated shape, and the outer side (260) of each of the heat sinks (200) includes two segments, and a segment of the outer side (260) is curved, and is close to the The other end of the end portion (210) of the heat sink (200) is linear; the curved portion of the outer side edge (260) and the inner side edge (220) intersect at an acute angle; each of the heat sinks ( 200) After the fan arrangement, the arc segments of the outer side (260) of each of the fins (200) are on the same spherical or ellipsoidal surface.
The heat sink according to claim 1, wherein

A mounting plate (300) for fixing the heat sink (200); the mounting plate (300) includes a first mounting plate (330) and a second mounting plate (350);

An end portion (210) of each of the heat dissipation fins (200) is fixed on the second mounting board (350) such that each of the heat dissipation fins (200) and the second mounting board (350) intersect at 80 to 90 degrees. Angle of intersection

An inner side (220) of each of the fins (200) is fixed on the first mounting plate (330), and each of the fins (200) is vertically fixed in a fan shape on the first mounting plate (330). Arrange.
The heat sink according to claim 5, wherein

The first mounting plate (330) and the second mounting plate (350) intersect at a right angle or an obtuse angle of a capital letter L; each of the heat sinks (200) is fixed to the first mounting plate (330) and The second mounting plates (350) intersect to form an L-shaped mounting surface.
The heat sink according to claim 5, wherein

The second mounting plate (350) is provided with a plurality of card slots (355) for engaging the heat sinks (200); the end portion (210) of the heat sink (200) is inserted into the card The slot (355) is fixedly coupled to the second mounting plate (350).
The heat sink according to claim 5, wherein

An end portion (210) of each of the heat dissipation fins (200) is provided with a snap portion (217) for engaging and connecting the heat sink (200) and the card slot (355) near the outer side edge (260). .
The heat sink according to claim 1, wherein

A housing (700) for covering the heat sinks (200), the shape of the housing (700) is adapted to form a spherical or ellipsoidal shape along an outer edge of each of the heat sinks (200); The outer casing (700) is respectively connected to the first mounting plate (330) and the second mounting plate (350), and the heat sink (200) is covered therein.
The heat sink according to claim 1, wherein

The outer casing (700) is provided with a through hole (720) for communicating each of the heat sink (200) and the heat dissipation channel (800) with the outside.