CN204005391U - LED Lighting Fixtures - Google Patents

Abstract

The utility model relates to an LED lighting fixture, comprising a lamp holder, a lamp body and a heat dissipation lampshade; the lamp holder comprises a lamp holder body, and a positive terminal, a negative terminal and at least one connecting portion arranged on the lamp holder body, each connecting portion is provided with a positive portion and a negative portion; in at least one connecting portion of the lamp holder, the positive portion is connected to the positive terminal, and the negative portion is connected to the negative terminal; the lamp body comprises a plurality of PCB boards; each PCB board is provided with at least one connecting portion, and its positive and negative portions are respectively pivotally connected to the positive and negative portions of another connecting portion outside the PCB board; a plurality of LED lamps are arranged on the light-emitting surface of the PCB board, and a control device is arranged on the mounting surface of the PCB board for controlling the LED lamps; the heat dissipation lampshade is fixedly arranged on the lamp holder, and is provided with a plurality of heat dissipation holes. The above-mentioned LED lighting fixture not only makes the heat dissipation effect of the LED lighting fixture better, but also makes the LED lighting fixture have different lighting effects, can be used in different occasions, increases the use scope of the LED lighting fixture, and makes it more versatile.

Description

LED Lighting Fixtures

technical field

The utility model relates to the field of lamps, in particular to an LED lighting lamp.

Background technique

As a new light source, LED has been widely used in various lighting facilities because of its good energy-saving effect and long life. White LED is known as the fourth-generation lighting source to replace fluorescent lamps and incandescent lamps. LED has changed the principle of tungsten filament luminescence of incandescent lamps and three-based toner luminescence of fluorescent lamps. It uses electric field luminescence and has the advantages of high luminous efficiency, no radiation, long life, low power consumption and environmental protection.

However, the LED lighting fixtures currently on the market have poor heat dissipation, which makes the LED lighting fixtures poor in stability and relatively short in life.

Utility model content

Based on this, it is necessary to provide an LED lighting fixture. The technical problems to be solved include: how to pivot the PCB boards to each other, how to pivot the PCB boards to the lamp holder, how to realize the circuit connection by pivoting, how to fix the lampshade and how to pass Lampshade for heat dissipation, etc.

An LED lighting fixture, comprising a lamp holder, a lamp body and a heat dissipation lampshade;

The lamp cap includes a lamp cap body, and a positive terminal, a negative terminal and at least one connecting portion arranged on the lamp cap body, and each connecting portion is provided with a positive pole portion and a negative pole portion;

In at least one of the connecting parts of the lamp cap, the positive part is connected to the positive end, and the negative part is connected to the negative end;

The lamp body includes several PCB boards;

Each of the PCB boards is provided with at least one connecting portion, and its positive pole portion and negative pole portion are respectively pivoted to the positive pole portion and negative pole portion of another connecting portion outside the PCB board, and two adjacent PCBs An angle is formed between the plates;

A plurality of LED lights are arranged on the light-emitting surface of the PCB board, and a control device is arranged on the installation surface of the PCB board for controlling the LED lights;

The heat dissipation lampshade is fixedly arranged on the lamp cap, and is provided with a plurality of heat dissipation holes.

In one of the embodiments, several installation slots are provided on the PCB, and the LEDs are accommodated in the installation slots.

In one of the embodiments, the angle formed between two adjacent PCB boards is between 100° and 150°.

In one of the embodiments, the PCB board is hexagonal.

In one embodiment, the connecting portion is a hinge structure, and a plurality of the PCB boards are pivotally connected by the hinge, wherein each side of each PCB board is provided with at least one hinge.

In one embodiment, the heat dissipation lampshade includes an upper lampshade and a lower lampshade, and each of the heat dissipation holes is disposed on the lower lampshade.

In one of the embodiments, the lower lampshade is a double-layer arc surface structure.

In one of the embodiments, several heat dissipation holes are provided on each layer of the arc-shaped structure.

In one of the embodiments, the heat dissipation holes of the arc-shaped structure in each layer are arranged in a staggered manner.

In one embodiment, the inner arcuate structure is provided with several concave arcs, and the outer arcuate structure is provided with several convex arcs.

The above-mentioned LED lighting fixtures are pivotally connected to the PCB board at a certain angle through the installation branch, which not only makes the heat dissipation effect of the LED lighting fixtures better, but also makes the LED lighting fixtures have different lighting effects, and can be used in different occasions, increasing the LED lighting fixtures. The scope of use makes it more versatile.

The setting of the protective cover prevents the connection area between the lamp cap and the lamp holder from being touched or water enters. To a certain extent, the lamp head can be more stably arranged on the lamp holder, and the use of the lamp head is safer, and it is not easy to short circuit. In addition, since the end of the protective cover connected to the lamp holder is a suction cup structure, water ingress in the connection area between the lamp holder and the lamp holder is further avoided.

The metal core PCB board makes the heat dissipation effect of the PCB board better.

The setting of the reflective layer on the upper lampshade enables the LED lighting fixture to more effectively utilize the light emitted by the LED lamp, and further strengthens the concentrating property of the light emitted by the LED lamp. Moreover, the setting of air holes on the upper lampshade makes the upper lampshade more air permeable and easier to dissipate heat. In addition, the upper lampshade can also protect the PCB board and prevent it from being short-circuited by water.

The heat dissipation lampshade is double-layered, which makes the LED lighting fixture suitable for outdoor environments, not only makes the LED lighting fixture better waterproof and dustproof, but also protects the LED lights on the PCB board more effectively. The setting of cooling holes enables the cooling lampshade to effectively dissipate the heat generated by LED lighting fixtures in a timely manner, and the staggered arrangement of cooling holes can prevent water or dust from contacting the PCB board through the cooling holes, further enhancing the reliability of LED lighting fixtures. The heat dissipation holes are arranged on the projection area where the PCB board is projected on the lampshade and near the projection area, so that the LED lighting fixture can effectively dissipate heat while reducing its processing difficulty. In addition, the setting of the astigmatism layer makes the light of LED lighting fixtures softer and more uniform, avoiding glare. Compared with the heat dissipation lampshade, the heat conduction area can quickly absorb heat and dissipate the absorbed heat quickly, which further ensures the heat dissipation effect of the LED lighting fixture.

The PCB boards are 100°-150° away from each other, so that the space between adjacent PCB boards is larger, and the heat generated is easier to spread, thereby enhancing the heat dissipation effect. Multiple PCB boards can be spliced into any desired shape as required, and the light-emitting angle and light-gathering effect of the LED lighting fixture can be controlled through the spliced shape, so that the LED lighting fixture can be used in various occasions. At the same time, the relative position of the PCB board can be adjusted to maximize the use of space, and can be adjusted according to the space, increasing the application range of LED lighting fixtures. There are gaps or gaps between adjacent PCB boards, which further enhances the heat dissipation effect of the LED lighting fixture. The setting of the cooling element and the fan absorbs the heat emitted by the PCB board, further ensuring the heat dissipation effect of the LED lighting fixture. A safety cover is provided outside the cooling element to prevent water vapor from being generated and condensed into water droplets when the cooling element absorbs heat, which will cause the PCB board to fail. Therefore, the safety cover increases the stability of the LED lighting fixture.

The LED lamps are placed in the installation groove to make the surface of the PCB board flat. During production, storage and transportation, it is not easy to hang and touch, and the storage space is reduced. In addition, the installation groove is coated with a luminescent layer, which increases the utilization rate of the LED lamp, thereby increasing the illumination brightness of the LED lighting fixture.

Description of drawings

Fig. 1 is a schematic structural view of an LED lighting fixture according to a preferred embodiment of the present invention;

Fig. 2 is a structural schematic diagram of the connection part of the LED lighting fixture shown in Fig. 1;

FIG. 3 is a schematic structural diagram of a heat dissipation lampshade according to another embodiment of the present invention.

Detailed ways

As shown in FIG. 1 , it is a schematic structural diagram of an LED lighting fixture 10 in a preferred embodiment of the present invention.

The LED lighting fixture 10 includes a lamp base 100 , a lamp body 200 and a heat dissipation lampshade 300 . The lamp cap 100 is disposed on the lamp body 200 , and the heat dissipation lampshade 300 is fixedly disposed on the lamp cap 100 and wraps the lamp body 200 . Wherein, the heat dissipation lampshade 300 is provided with heat dissipation holes 310 or heat dissipation grooves to dissipate heat. For example, the lamp holder is provided with mounting thread grooves, and the heat dissipation lampshade is screwed and fixedly arranged on the lamp holder, so that disassembly and assembly are all very convenient; A mounting strip correspondingly passes through a mounting hole and is fixed on the fixing ring.

Please also refer to FIG. 2 , which is a schematic structural diagram of the connecting portion 110 of the LED lighting fixture shown in FIG. 1 .

The lamp cap 100 includes a lamp cap 100 body, a positive terminal, a negative terminal and at least one connecting portion 110 disposed on the lamp cap 100 body. Each connecting portion 110 is provided with a positive pole portion 111 and a negative pole portion 112 , and for another example, an insulating portion 113 is further disposed between the positive pole portion 111 and the negative pole portion 112 . In at least one connecting portion 110 of the lamp cap 100 , the positive portion 111 is connected to the positive end, and the negative portion 112 is connected to the negative end. In this embodiment, the lamp cap 100 has threads, and the lamp cap 100 is screwed to the lamp socket to be connected through the threads. In other embodiments, for example, the lamp cap 100 is clamped with the lamp holder, wherein the lamp cap 100 is a bayonet lamp cap 100; as another example, the lamp cap 100 and the lamp holder are magnetically connected to each other through a magnetic material, for example, the lamp cap 100 is provided with a circular magnetic mounting part, It protrudes two connection ends, including a positive connection end and a negative connection end, both of which are insulated from each other. The lamp cap 100 is magnetically connected to the lamp holder to be connected through a circular magnetic mounting part. Adaptive, the lamp holder Set the corresponding circular magnetic installation area, so that the disassembly and assembly are convenient and quick. It should be pointed out that, as another example, the periphery of the lamp cap 100 has a protective cover. When the lamp cap 100 is fixedly connected to the lamp holder, the protective cover covers the adjacent area where the lamp cap 100 is connected to the lamp holder. It can also be understood that the protective cover covers the lamp cap 100. The connection area with the lamp holder is covered. Wherein, the end of the protective cover is adsorbed on the surface of the lamp holder, for example, the end of the protective cover connected to the lamp holder is a suction cup structure and the like.

The lamp body 200 includes several PCB boards 210 . The PCB board 210 is a metal core PCB board 210 . In order to solve the problem of how to pivotally connect two adjacent PCB boards, each PCB board 210 is provided with at least one connecting portion 110, and its positive pole portion 111 and negative pole portion 112 are respectively pivotally connected to another connecting portion 110 other than the PCB board 210. The positive pole part 111 and the negative pole part 112 are arranged so that two adjacent PCB boards are pivotally connected, that is, two adjacent PCB boards 210 are rotatable. Wherein, an included angle is formed between two adjacent PCB boards 210, and the angle is between 100° and 150°, which is conducive to forming a light-emitting surface with full angles and no dead angles; another example, the PCB board 210 is a regular polygonal structure , such as regular pentagons, regular hexagons, regular triangles, etc., so that they can be spliced into a lamp body structure similar to a bulb lamp with an outer contour and an inner cavity. According to needs, for example, the multiple PCB boards 210 are arranged identically, that is, the shapes and sizes of the multiple PCB boards 210 are the same. Or a plurality of PCB boards 210 are arranged differently, wherein, the side lengths of the plurality of PCB boards 210 are the same, and the shapes are different. For example, the lamp body 200 is formed by connecting a plurality of regular pentagonal and regular hexagonal PCB boards 210 with the same side length. , and for example, a plurality of regular triangles and regular hexagons with the same side length jointly surround and synthesize the lamp body 200 . For another example, a plurality of differently arranged PCB boards 210 have the same shape and different sizes, or different shapes and sizes; in this way, products of various specifications can be realized, the product line is enriched, and the application is convenient and suitable for different lighting need. It should be pointed out that, for example, a plurality of PCB boards 210 surround a composite cavity structure and form the lamp body 200 . Alternatively, multiple PCB boards 210 are connected to each other to form an open structure, such as a plane, zigzag, groove or hemispherical shape. When a plurality of PCB boards 210 form a cavity structure, the PCB board 210 is provided with a through hole, and for another example, a fan is provided in the cavity, and for another example, there is a gap or a gap at the connection of the PCB board 210 . Alternatively, a cooling element is arranged in the cavity, wherein a sealed safety cover is arranged outside the cooling element, and the safety cover is spaced apart from the cooling element and the PCB board 210 . According to the actual situation, for example, the connecting part 110 is a hinge structure, and a plurality of PCB boards 210 are hinged through hinges, wherein each side of each PCB board 210 is provided with at least one hinge, for example, in a hinge, The positive pole part, the insulating part and the negative pole part are arranged in sequence; as another example, according to the actual length of the sides of the PCB board 210, multiple hinges, such as two or three, can be set on each side. For another example, for the convenience of installation, the connecting part 110 is an interference-fit and rotatable rotating shaft and sleeve structure, and two adjacent PCB boards 210 are rotatably connected to each other and can be fixed at a desired position. For another example, the connection part 110 is a plug-in structure, and a plurality of connection parts 110 form matching protrusions or depressions, and multiple PCB boards 210 are connected and arranged through the insertion of the protrusions and depressions. Wherein the raised portion and the depressed portion are disposed on the PCB 210 along the periphery of the PCB 210 , for example, the raised portion and the depressed portion are respectively disposed at the edge of the PCB; or disposed in the middle of the PCB 210 . It should be pointed out that the angle between two adjacent PCB boards 210 can also be 90° or 160°.

Several LED lamps 220 are arranged on the light emitting surface of the PCB board 210 . The mounting surface of the PCB board 210 is provided with a control device for controlling the LED lamp 220 . Wherein, the light-emitting surface of the PCB 210 refers to the side of the PCB 210 facing the outside, and the mounting surface refers to the side of the PCB 210 facing the inner layer. According to the actual situation, several installation grooves are arranged on the PCB board 210 , and the LED lamp 220 is arranged on the light-emitting surface and accommodated in the installation grooves. Wherein, the groove is coated with a reflective layer.

Please also refer to FIG. 3 , which is a schematic structural diagram of a heat dissipation lampshade 300 according to another embodiment of the present invention.

The heat dissipation lampshade 300 is fixedly arranged on the installation cylinder, and the heat dissipation lampshade 300 has a double-layer lampshade structure. Each layer of lampshade is provided with a number of cooling holes 310 . The heat dissipation holes 310 of the lampshades of each layer are arranged in a staggered manner, so that direct light can be avoided, and the application effect is better; preferably, the heat dissipation lampshade 300 is a plastic film, which has a certain degree of light transmission. As another example, the double-layer lampshade structure includes the inner lampshade 320 and the outer lampshade 330, the outer lampshade 330 and the inner lampshade 320 are partially overlapped, that is, the two are not completely overlapped, and the inner lampshade 320 is partially exposed outside. To enhance its cooling effect.

The inner lampshade 320 is provided with several concave arcs 321 , and the outer lampshade 330 is provided with several convex arcs 331 . The light emitting direction of each LED lamp 220 of each PCB board 210 is exposed through the heat dissipation lampshade 300 . According to the actual situation, a plurality of cooling holes 310 are arranged on the convex arc portion 331 and the concave arc portion 321, and they are arranged alternately. In this way, on the one hand, it can be waterproof, and on the other hand, it can transmit light and dissipate heat. It is easy to manufacture and widely used. Alternatively, the cooling holes 310 are evenly distributed on the inner lampshade 320 and the outer lampshade 330 . For another example, the cooling holes 310 on the inner lampshade 320 are denser than the cooling holes 310 on the outer lampshade 330 , wherein the diameter of the cooling holes 310 on the inner lampshade 320 is smaller than the diameter of the cooling holes 310 on the outer lampshade 330 Preferably, the inner layers of the two lampshades are all equipped with a reflective layer, for example, a reflective film is plated to realize reflection, refraction and heat dissipation of light; or, the diameter of the cooling hole 310 on the inner lampshade 320 is equal to that on the outer lampshade 330 The diameter of the cooling holes 310, the distance between the cooling holes 310 on the inner lampshade 320 is smaller than the distance between the cooling holes 310 on the outer lampshade 330. In addition, there may be multiple groups of heat dissipation holes 310 on the same layer of heat dissipation lampshade 300 , and each group of heat dissipation holes 310 is disposed on and near the projected area of the PCB board 210 on the heat dissipation lampshade 300 . It should be pointed out that the astigmatism layer is provided on the heat dissipation lampshade 300, wherein the astigmatism layer is located on the outer lampshade 330; or, the astigmatism layer is located on the inner lampshade 320; or, both the inner lampshade 320 and the outer lampshade 330 are provided with astigmatism layer. For another example, the heat dissipation lampshade 300 is provided with a heat dissipation area, wherein the thermal conductivity of the heat dissipation area is different from that of the heat dissipation lampshade 300, and the heat dissipation area is made of a material with a higher thermal conductivity, such as a metal material. According to requirements, for example, the heat conduction area is separately provided on the outer lampshade 330 , and for another example, the heat conduction area is separately provided on the outer lampshade 330 , or both the outer lampshade 330 and the inner lampshade 320 are provided with heat conduction areas. It should be pointed out that the heat dissipation lampshade 300 has a plurality of heat conduction regions, and the plurality of heat conduction regions are evenly distributed in the vicinity of the heat dissipation lampshade 300 near the lamp cap 100 . It should be pointed out that the heat dissipation lampshade 300 includes an upper lampshade and a lower lampshade, and each cooling hole 310 is disposed on the lower lampshade. Wherein, the lower lampshade is a double-layer curved surface structure. The upper lampshade is disposed on the lamp holder 100 and wraps part of the PCB board 210 . Wherein, the upper lampshade is coated with a reflective layer. A number of ventilation holes are provided on the upper lampshade. A plurality of ventilation holes are evenly distributed on the upper lampshade. Moreover, a reflective layer is provided on the lampshade. According to the actual situation, a number of ventilation holes are gradually distributed from the middle of the upper lampshade to the edge, that is, the number of ventilation holes near the middle of the upper lampshade is relatively large. As another example, omit the ventilation holes on the lampshade. As another example, the lampshade is also provided with a plurality of cooling slots at intervals.

An example is that the upper lampshade and/or the lower lampshade are provided with a heat conduction part, a heat transfer part and a heat dissipation part in close contact in sequence; The main body is provided with a first heat conduction hole, and the auxiliary heating element is provided with a second heat conduction hole; the heat transfer part includes a heat transfer body and several auxiliary heat transfer members connected to the heat transfer body, and the heat transfer The main body is provided with a first heat transfer hole, and the auxiliary heat transfer member is provided with a second heat transfer hole; the heat dissipation part includes a heat dissipation body, a main heat sink and an auxiliary heat sink fixedly arranged on the heat dissipation body. For example, the first heat conduction hole communicates with the first heat transfer hole. In another example, the second heat conduction hole communicates with the second heat dissipation hole. As another example, buckles are provided on the auxiliary cooling fins. For example, the end surface of the main heat dissipation fin away from the heat dissipation body has a planar structure, and the end of the auxiliary heat dissipation fin away from the heat dissipation body has a pointed structure. In another example, the distance from the free end of the main heat sink to the heat dissipation body is greater than the distance from the free end of the auxiliary heat sink to the heat dissipation body. For example, the heat conduction part further includes a first connecting piece, and the two ends of the first connecting piece are respectively connected to the heat conducting body and the auxiliary heating element, so that the heat conducting body and the auxiliary heating element are fixed. . As another example, the heat dissipation part further includes a second connecting piece, and the two ends of the second connecting piece are respectively connected to the heat dissipation body and the auxiliary heat dissipation element, so that the heat dissipation body and the auxiliary heat dissipation element are connected. fixed. In another example, there are four auxiliary heating elements, and the four auxiliary heating elements are connected to the four end corners of the heat conducting body. Alternatively, at least one heat dissipation plate is also arranged on the heat dissipation portion, each heat dissipation plate includes a heat dissipation body and several bent extensions connected to the edge of the heat dissipation body, the bent extensions are radially distributed, and the bent extensions are far away from the heat dissipation body The end part is fixedly arranged on the bottom. As another example, the upper lampshade and/or the lower lampshade are wound with a number of heat dissipation wires, for example, the heat dissipation wires include several mutually twisted monofilaments, and several support bars are arranged between each monofilament, and each mutually twisted monofilament The middle area forms a porous cavity, similar to the double helix structure of DNA, which helps to enhance the heat dissipation effect of the lampshade. As another example, there are several heat dissipation wires, and there are intervals between the several heat dissipation wires, so that the several heat dissipation wires are distributed on the surface of the lampshade in a mesh structure, thereby reducing the heat dissipation of several heat dissipation wires. At the same time, the heat absorbed by the lampshade can be more evenly transferred to the heat dissipation wires, so that the heat dissipation effect of the lampshade can be further enhanced.

According to the actual situation, the LED lighting fixture 10 also includes a wireless control chip, and the chip mounting position is set on the PCB board 210, and the wireless control chip and its control circuit are set in the chip mounting position. In this way, through the wireless control chip and its control circuit, it is possible to realize Wireless control, such as wireless switches, smart lamps, etc., for example, is controlled through mobile terminals of mobile phones.

The above-mentioned LED lighting fixture 10 pivotally connects the PCB board 210 at a certain angle through the installation branch, which not only makes the heat dissipation effect of the LED lighting fixture 10 better, but also makes the LED lighting fixture 10 have different lighting effects, and can be used in different occasions, increasing The scope of use of the LED lighting fixture 10 is widened, making it more versatile.

The setting of the protective cover prevents the connection area between the lamp cap 100 and the lamp socket from being touched or water enters. To a certain extent, the lamp holder 100 can be more stably arranged on the lamp holder, and the use of the lamp holder 100 is safer and less likely to be short-circuited. In addition, since the end of the protective cover connected to the lamp socket is a suction cup structure, water ingress in the connection area between the lamp cap 100 and the lamp socket is further avoided.

The metal core PCB board 210 makes the heat dissipation effect of the PCB board 210 better.

The setting of the reflective layer on the upper lampshade enables the LED lighting fixture 10 to utilize the light emitted by the LED lamp 220 more effectively, and further strengthens the concentrating property of the light emitted by the LED lamp 220 . Moreover, the setting of air holes on the upper lampshade makes the upper lampshade more air permeable and easier to dissipate heat. In addition, the upper lampshade can also protect the PCB board 210 and prevent it from being short-circuited by water.

The heat dissipation lampshade 300 is double-layered, which makes the LED lighting fixture 10 suitable for outdoor environments, not only makes the LED lighting fixture 10 better waterproof and dustproof, but also protects the LED lamp 220 on the PCB board 210 more effectively. The setting of the heat dissipation holes 310 enables the heat dissipation lampshade 300 to effectively dissipate the heat generated by the LED lighting fixture 10 in time, and because the heat dissipation holes 310 are arranged in a staggered manner, it is possible to prevent water or dust from contacting the PCB board 210 through the heat dissipation holes 310, which further enhances the LED lighting performance. The reliability of the lighting fixture 10. The heat dissipation holes 310 are disposed on and near the projected area of the PCB board 210 projected on the lampshade, so as to effectively dissipate heat from the LED lighting fixture 10 and reduce its processing difficulty. In addition, the setting of the astigmatism layer makes the light of the LED lighting fixture 10 softer and more uniform, avoiding glare. Compared with the heat dissipation lampshade 300 , the heat conduction area can quickly absorb heat and dissipate the absorbed heat quickly, which further ensures the heat dissipation effect of the LED lighting fixture 10 .

The PCB boards 210 are at an angle of 100°-150° to each other, so that the space between adjacent PCB boards 210 is larger, and the generated heat is more easily diffused, thereby enhancing the heat dissipation effect. A plurality of PCB boards 210 can be spliced into any desired shape as required, and the light-emitting angle and light-gathering effect of the LED lighting fixture 10 can be controlled through the spliced shape, so that the LED lighting fixture 10 can be used in various occasions. At the same time, the relative position of the PCB board 210 can be adjusted to maximize the use of space, and can be adjusted according to the space, increasing the application range of the LED lighting fixture 10 . There are gaps or gaps between adjacent PCB boards 210 , which further enhances the heat dissipation effect of the LED lighting fixture 10 . The arrangement of the cooling element and the fan absorbs the heat emitted by the PCB board 210 and further ensures the heat dissipation effect of the LED lighting fixture 10 . A safety cover is provided outside the cooling element to prevent water vapor from being condensed into water droplets when the cooling element absorbs heat, thereby causing failure of the PCB board 210 . Therefore, the safety cover increases the stability of the LED lighting fixture 10 .

The LED lamp 220 is accommodated in the installation groove, so that the surface of the PCB board 210 is flat, and it is not easy to be touched during production, storage and transportation, and the storage space is reduced. In addition, the installation groove is coated with a luminescent layer, which increases the utilization rate of the LED lamp 220 , thereby increasing the illumination brightness of the LED lighting fixture 10 .

The above-mentioned embodiments only express several implementations of the utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (10)

1. An LED lighting fixture, characterized in that it comprises a lamp holder, a lamp body and a heat dissipation lampshade; The lamp cap includes a lamp cap body, and a positive terminal, a negative terminal and at least one connecting portion arranged on the lamp cap body, and each connecting portion is provided with a positive pole portion and a negative pole portion; In at least one of the connecting parts of the lamp cap, the positive part is connected to the positive end, and the negative part is connected to the negative end; The lamp body includes several PCB boards; Each of the PCB boards is provided with at least one connecting portion, and its positive pole portion and negative pole portion are respectively pivoted to the positive pole portion and negative pole portion of another connecting portion outside the PCB board, and two adjacent PCBs An angle is formed between the plates; A plurality of LED lights are arranged on the light-emitting surface of the PCB board, and a control device is arranged on the installation surface of the PCB board for controlling the LED lights; The heat dissipation lampshade is fixedly arranged on the lamp cap, and is provided with a plurality of heat dissipation holes. 2 . The LED lighting fixture according to claim 1 , wherein a plurality of installation grooves are arranged on the PCB, and the LEDs are accommodated in the installation grooves. 3 . 3. The LED lighting fixture according to claim 1, wherein the angle formed between two adjacent PCB boards is between 100° and 150°. 4. The LED lighting fixture according to claim 1, wherein the PCB board is hexagonal. 5. The LED lighting fixture according to claim 1, wherein the connection part is a hinge structure, and a plurality of the PCB boards are pivotally connected through the hinge, wherein each side of each of the PCB boards All are provided with at least one hinge. 6 . The LED lighting fixture according to any one of claims 1 to 5 , wherein the heat dissipation lampshade includes an upper lampshade and a lower lampshade, and each of the heat dissipation holes is disposed on the lower lampshade. 7. The LED lighting fixture according to claim 6, wherein the lower lampshade is a double-layer arc surface structure. 8 . The LED lighting fixture according to claim 7 , wherein a plurality of heat dissipation holes are provided on each layer of the curved surface structure. 9 . The LED lighting fixture according to claim 8 , wherein the heat dissipation holes of the arc-shaped structures of each layer are arranged in a staggered manner. 10. The LED lighting fixture according to claim 9, wherein the inner arc surface structure is provided with several concave arc portions, and the outer layer arc surface structure is provided with several convex arc portions.