WO2011085539A1

WO2011085539A1 - Led lamp

Info

Publication number: WO2011085539A1
Application number: PCT/CN2010/070137
Authority: WO
Inventors: 蒋泽全
Original assignee: 深圳市普耐光电科技有限公司
Priority date: 2010-01-12
Filing date: 2010-01-12
Publication date: 2011-07-21

Abstract

An LED lamp includes a heat radiator, a circuit board (40) connected to the heat radiator, an LED illuminant (41) mounted on the circuit board (40), a lamp holder (10), a lampshade and a connecting ring (60). The connecting ring (60) connects the lamp holder (10) to the lampshade. The lampshade includes a light transmitting cover (30) and a heat dissipating cover (20). The light transmitting cover (30) covers the LED illuminant (41). The heat dissipating cover (20) has heat dissipating openings (21) and covers the heat radiator inside.

Description

LED light

Technical field

The present invention relates to lighting fixtures, and more particularly to an LED lamp.

Background technique

LED (Light-Emitting) Diode: Light-emitting diodes (LEDs) are becoming more and more widely used in lighting fixtures as a new type of energy-saving and environmentally-friendly light-emitting components.

The heat dissipation structure of LED lighting is an important component that must be used in high-power LED products. The heat dissipation structure is used as a heat conduction conduction accessory, which is the most important role in protecting the safety and use of LEDs. Due to the limitation of the power supply space, it is impossible to isolate the transformer form in the small space of common lighting. Such a structure has a safety hazard when the human body is in contact with the heat dissipation structure.

technical problem

The main technical problem to be solved by the present invention is to provide an LED lamp with high safety performance.

Technical solution

In order to solve the above technical problem, the present invention provides an LED lamp, The utility model comprises a heat sink, an LED lamp set fixed on the heat sink, a lamp cap, a lamp cover and a connecting ring connecting the lamp cap and the lamp cover, the lamp cover comprising a transmissive cover and a heat dissipation cover, the transparent cover and the heat dissipation The cover is fixedly connected, the transparent cover covers the LED illuminator, and the heat shield covers the heat sink.

Beneficial effect

The beneficial effects of the invention are:

The invention is provided with a heat dissipation cover, and the heat dissipation cover covers the heat sink, so that the heat sink is wrapped in the heat dissipation cover, thereby avoiding the safety hazard caused by the human body directly contacting the non-insulated heat sink during installation or disassembly.

DRAWINGS

Figure 1 is a front elevational view of a specific embodiment of the present invention;

Figure 2 is a plan view of a specific embodiment of the present invention;

3 is a schematic cross-sectional structural view of a heat sink according to an embodiment of the present invention;

4 is a schematic diagram of a discrete structure of components in a specific embodiment of the present invention;

5 is a schematic cross-sectional structural view of a first connecting ring in a specific embodiment of the present invention;

FIG. 6 is a schematic perspective view of a third embodiment of the present invention.

Embodiments of the invention

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

As shown in FIG. 1 to FIG. 6, an LED lamp of the present invention includes an LED lamp set, a heat sink, a lamp cap 10, a lamp cover, a connecting ring 60, and a power source (not shown). The power supply is placed inside the lamp holder for driving the LED light unit and the heat sink. The LED lamp set includes a circuit board 40 and an LED illuminator 41. The LED illuminator 41 is disposed on the circuit board 40, and the lamp cap 10 and the lamp cover are connected by a connecting ring 60. The circuit board 40 may be a copper substrate or an aluminum substrate.

In one embodiment, the lampshade can be provided in a variety of shapes, such as spherical, ellipsoidal, cuboid or other shapes, as desired. The lamp cover includes a heat dissipation cover 20 and a light transmission cover 30. The heat dissipation cover 20 and the light transmission cover 30 are fixedly connected, and may be connected by a buckle. The heat shield 20 and the light transmissive cover 30 enclose a lampshade cavity having an open end and a closed end. The circuit board 40 is disposed in the lamp cavity, the light transmissive cover 30 covers the LED light body 41, and the heat cover 20 covers the heat sink. The circuit board 40 and the transparent cover 30 form an illumination cavity, and the LED illuminator 41 is disposed in the illumination cavity. The circuit board 40 and the heat dissipation cover 20 form a heat dissipation cavity, and the heat sink is disposed in the heat dissipation cavity.

The heat sink 20 has a heat dissipation opening 21. Both the heat sink cover 20 and the light transmissive cover 30 are insulating covers. In one embodiment, A second slit 42 is disposed between the LED lamp group and the closed end of the lamp housing cavity to penetrate the light emitting cavity and the heat dissipation cavity.

In one embodiment, the heat sink includes a heat sink 51 and a base 54. The heat sink 51 is disposed on the base 54 and the circuit board 40 is fixed to the base 54. The base 54 is coupled to the connecting ring 60 by screws. The cross section of the heat sink is matched with the cross section of the heat sink cover 20, and the heat sink 51 may have one or more. In this embodiment, there are a plurality of fins 51, and a first slit 52 is formed between adjacent fins 51. The cross section of the plurality of fins 51 gradually decreases from the middle to the sides, and the cross section of the heat sink 20 The shape can be half moon shaped. A heat dissipating groove 53 may be disposed on the surface of the heat sink 51. The heat dissipating groove 53 may be a plurality of holes, and the heat dissipating groove 53 may be a toothed strip heat dissipating groove.

In one embodiment, the first slit 52 between the fins 51 corresponds to the heat dissipation opening 21. The heat dissipation opening 21 may be provided in various shapes, for example, the heat dissipation opening 21 may be provided as a flat opening. There may be one or more in-line openings, and in one embodiment, the in-line openings are arranged in parallel.

The heat dissipation opening 21 can also be provided as a hole-shaped opening. There may be one or more than one hole-shaped opening. In one embodiment, there are a plurality of hole-shaped openings, and the first slit 52 between the fins 51 corresponds to the hole-shaped opening.

In one embodiment, the connecting ring 60 includes a first connecting ring 61, a second connecting ring 62, and a partition 63. The partition plate 64 is disposed between the first connecting ring 61 and the second connecting ring 62. The partition plate 64 is provided with a through hole 65 through which the wire can pass, so that one end of the wire is connected to the power source, and the other end is connected to the LED illuminant 41 and the heat sink. Device. The first connecting ring 61 is connected to the lamp cover, and the second connecting ring 62 is connected to the base 10. The first connecting ring 61 is provided with a first inlet 63. The first inlet 63 allows air to enter, and the transparent cover 30 is provided with a second inlet 31. The second inlet 31 also allows air to enter the lighting cavity. When the lampshade is connected to the connecting ring 60, the first inlet 31 and the second inlet 62 are in communication, and air can enter the lighting cavity from the communication between the first inlet 63 and the second inlet 31, between the wiring board 40 and the closed end of the lamp housing cavity. After the second slit 42 enters the heat dissipation chamber and exchanges heat with the heat sink 51, the heated air is discharged from the heat dissipation opening 21.

In one embodiment, the first inlet 63 may be an axially extending groove disposed on the inner wall of the first connecting ring 61, and the second inlet 31 is an opening recessed in the end surface of the transparent cover 30. The first inlet 63 and the second inlet 31 may also be through holes or other shapes that allow air to enter from the communication between the first inlet 63 and the second inlet 31 after the first connecting ring 61 and the light transmissive cover 30 are connected.

In one embodiment, the base 10 has a base connection 11 to which the base connection 11 is coupled. The second connecting ring 62 and the base connecting portion 11 are respectively provided with a toothed protrusion 12 for positioning the base 10 and the connecting ring 60 to rotate relative to each other, and a first groove 66 for engaging with the toothed protrusion 12.

In one embodiment, the inner wall of the base connecting portion 11 is provided with a protruding latch 13 , and the outer wall of the second connecting ring 62 is provided with a second recess 68 , and the latch 13 and the second recess 68 are engaged. Or the outer wall of the base connecting portion 11 is provided with a protruding latch 13 , and the inner wall of the second connecting ring 62 is provided with a second recess 68 , and the latch 13 and the second recess 68 are engaged. The second recess 68 is an annular groove that surrounds the axis of the second connecting ring 62.

In another embodiment, the inner wall of the second connecting ring 62 is provided with a protruding latch 13 , and the outer wall of the cap connecting portion 11 is provided with a second recess 68 , and the latch 13 and the second recess 68 are engaged. Alternatively, the outer wall of the second connecting ring 62 is provided with a protruding latch 13 , and the inner wall of the cap connecting portion 11 is provided with a second recess 68 , and the latch 13 and the second recess 68 are engaged. The second recess 68 is an annular groove that surrounds the axis of the base joint 11.

In the embodiment, the toothed protrusions 12 are disposed on the inner wall of the base connecting portion 11 , and the first groove 66 is disposed on the second connecting ring 62 , and the outer diameter of the second connecting ring 62 is connected to the base of the base portion 11 . The inner diameter matches.

In an embodiment, the second connecting ring 62 may be provided with a cantilever rod 67, and the first groove 66 is disposed on the cantilever rod 67. The first groove 66 may be a through hole.

In an embodiment, the inner wall of the base connecting portion 11 can also be provided with a bump 14 which is higher than the toothed protrusion 12, and the bump 14 and the cantilever plate 67 cooperate to limit the position and prevent the second connecting ring. 62 rotates over 360°.

In an embodiment, a reflective sheet 70 may also be included. The reflection sheet 70 is disposed on the optical path of the LED illuminator 41 on the side close to the connection ring 60. In this embodiment, one end of the reflective sheet 70 is disposed on the circuit board 40, and the other end is disposed on the connecting ring 60, and specifically disposed on the first connecting ring 61. The reflection sheet 70 may be a reflection sheet that can reflect light and diffuse light.

In the embodiment of the present invention, the cross section of the heat sink is matched with the cross section of the heat sink cover. The heat sink includes a plurality of heat sinks, and the first gap is disposed between the heat sink sheets, the structure is simple, and the heat dissipation area is large. The surface of the heat sink is provided with a heat dissipation groove, which can increase the heat dissipation area and improve the heat dissipation effect. The heat sink is a toothed strip heat sink, which can further improve the heat dissipation effect. There are a plurality of heat dissipation openings corresponding to the first gap between the heat sinks, so that hot air can be discharged in time. The second slit penetrates the light emitting cavity and the heat dissipation cavity, and the connecting ring includes a first connecting ring connected to the lamp cover, the first connecting ring is provided with a first inlet, and the transparent cover is provided with a second inlet, the first inlet and the second The inlet is connected to allow low temperature air to enter from the first inlet and the second inlet, so that hot air exits from the heat dissipation opening on the heat sink to form air circulation, improve heat dissipation, improve the quality of the LED lamp, and extend its use. life. The inner wall of the base of the lamp cap is provided with a protruding latch, the outer wall of the second connecting ring is provided with a second groove that cooperates with the latch, or the inner wall of the second connecting ring is provided with a protruding latch, and the outer wall of the connecting portion of the cap is provided with a lock The second groove of the buckle fits, and the buckle moves in the second groove to facilitate the fixed connection between the lamp head connecting portion and the second connecting ring through the buckle and the first groove. The second groove is an annular groove surrounding the axis of the second connecting ring, so that the buckle can be rotated at any angle in the second groove, so that the lamp joint and the second connecting ring are fixed at any position. The second connecting ring is provided with a cantilever plate, and the first groove is disposed on the cantilever plate, so that the structure of the second connecting ring is simpler. The inner wall of the connecting portion of the lamp cap is provided with a bump, and the bump cooperates with the cantilever plate to prevent the second connecting ring from rotating more than 360°, and the damage caused by the rotating angle of more than 360° to the LED lamp is avoided. One end of the reflective sheet is disposed on the circuit board, and the other end is disposed on the first connecting ring, and the light originally incident on the first connecting ring is utilized, thereby avoiding the brightness loss caused by the light shining on the first connecting ring. The reflection sheet is a reflection sheet that can reflect light and diffuse light. The use of a reflective sheet having both a reflective effect and a diffusing effect increases the brightness by more than 3%. After the brightness is increased, the eyes do not look glare, which also enhances the visual effect when the light is illuminated.

The above is a further detailed description of the present invention in connection with the specific embodiments, and the specific embodiments of the present invention are not limited to the description. It will be apparent to those skilled in the art that the present invention may be made without departing from the spirit and scope of the invention.

Claims

An LED lamp, The utility model is characterized in that it comprises a heat sink, an LED lamp set fixed on the heat sink, a lamp cap (10), a lamp cover and a connecting ring (60) connecting the lamp cap (10) and the lamp cover, the lamp cover including a transmissive cover (30) and a heat dissipation cover (20), the light transmission cover (30) and the heat dissipation cover (20) are fixedly connected, and the light transmission cover (30) covers the LED light body, and the heat dissipation cover (20) Covering the heat sink.
The LED lamp according to claim 1, characterized in that the heat dissipation cover (20) is provided with a heat dissipation opening (21).
The LED lamp of claim 2, wherein a cross section of the heat sink matches a cross section of the heat sink cover (20), the heat sink including a plurality of heat sinks (20) adjacent to each other A first slit (52) is disposed between the fins (51).
The LED lamp according to claim 3, characterized in that the surface of the heat sink (51) is provided with a heat dissipation groove (53).
The LED lamp according to claim 4, wherein the heat dissipation groove (53) is a toothed strip heat dissipation groove.
The LED lamp according to claim 3, wherein the heat dissipation opening (21) has a plurality of, and the first slit (52) corresponds to the heat dissipation opening (21).
The LED lamp of claim 7, wherein said heat dissipation openings (21) are in-line openings and are arranged in parallel.
The LED lamp of claim 1 wherein said light transmissive cover (30) and said heat shield (20) comprise a globe cavity having a closed end and an open end, said shade cavity comprising a heat sink disposed a heat dissipation cavity and an illumination cavity provided with an LED lamp group, and a second gap (42) between the LED lamp group and the closed end for allowing the heat dissipation cavity and the illumination cavity to pass through, the connection ring (60) a first connecting ring (61) connected to the open end, the first connecting ring (61) being provided with a first inlet (63) for allowing air to enter, the transparent cover (30) A second inlet (31) is provided, the first inlet (63) being in communication with the second inlet (31).
The LED lamp according to claim 8, wherein said first inlet (63) is a groove extending axially in an inner wall of said first connecting ring (60), said second inlet (31) being concave An opening provided on the end face of the translucent cover.
The LED lamp of claim 1 further comprising a reflective sheet (70) capable of reflecting light and diffusing light, said reflective sheet being disposed on the circuit board at one end and disposed on the connecting ring at the other end.
The LED lamp of claim 1 wherein said base (10) has a base connection (11), said connecting ring (60) including a first connecting ring (61) coupled to said cover and a second connecting ring (62) connected to the base connecting portion (11), the first connecting ring (61) and the second connecting ring (62) are rotatably engaged, the first connecting ring (61) And one of the second connecting rings (62) is provided with a toothed protrusion (12) for positioning the lamp cap (10) and the connecting ring (60) relative to each other, the first connecting ring (61) And the other of the second connecting ring (62) is provided with a first groove (66) that cooperates with the toothed protrusion (12).
The LED lamp according to claim 11, wherein the inner wall of the base connecting portion (11) is provided with a protruding latch (13), and the outer wall of the second connecting ring (62) is provided with the latch (13) A second recess (68) that fits.
The LED lamp of claim 12 wherein said second recess (68) is an annular groove surrounding an axis of said second connecting ring (62).
The LED lamp according to claim 11, wherein the inner wall of the second connecting ring (62) is provided with a protruding latch (13), and the outer wall of the base connecting portion (11) is provided with the latch (13) A second recess (68) that fits.
The LED lamp of claim 14 wherein said second recess (68) is an annular groove that surrounds an axis of said second connecting ring (62).
The LED lamp according to claim 11, wherein said toothed projection (12) is disposed on an inner wall of the base connecting portion (11), and said first recess (66) is disposed in said second connecting ring (62) The outer diameter of the second connecting ring (62) matches the inner diameter of the base connecting portion (11).
The LED lamp of claim 16, wherein the second connecting ring (62) is provided with a cantilever plate (67), and the first groove (66) is disposed on the cantilever plate (67) on.
The LED lamp of claim 17 wherein said first recess (66) is a through hole.
The LED lamp according to claim 17, wherein the inner wall of the base connecting portion (11) is further provided with a bump (14), and the bump (14) is higher than the toothed protrusion (12) .