WO2011085538A1

WO2011085538A1 - Led lamp

Info

Publication number: WO2011085538A1
Application number: PCT/CN2010/070135
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 lamp head (10), a lamp shade, a connecting ring (60) and an LED lighting assembly. The lamp head (10) includes a lamp head connecting section (11). The connecting ring (60) connects the lamp head connecting section (11) and the lamp shade. The lamp shade includes a light transmitting shade (30). The light transmitting shade (30) covers the LED lighting assembly. The connecting ring (60) includes a first connecting ring (61) which connects the lamp shade and a second connecting ring (62) which connects the lamp head connecting section (11). The first connecting ring (61) and the second connecting ring (62) are rotatably matched. Tooth-shape protrusions (12) which enable rotational locating between the lamp head (10) and the connecting ring (60) are arranged on one of the first connecting ring (61) and the second connecting ring (62). First grooves (66) which cooperate with the tooth-shape protrusions (12) are arranged on the other one of the first connecting ring (61) and the second connecting ring (62). The lamp head (10) and the lamp shade can rotate relatively to each other and can be located accurately. The angle of light of the lamp head (10) can be adjusted. The adjustable scope of the lamp head (10) is enlarged. The scope of the light of the LED lamp is broader.

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.

In the prior art, the LED lamp with a large angle rotation function adopts the end face rotation positioning, the rotation structure is movable and has no elasticity, and cannot be accurately positioned, and is not suitable for an application requiring high precision tolerance. Products with a small angle rotation function have only a slight adjustment effect, which is not conducive to wide-angle use.

technical problem

The main technical problem to be solved by the present invention is to provide an LED lamp in which the lamp cap and the lamp cover can be rotated and accurately positioned with each other.

Technical solution

In order to solve the above technical problem, the present invention provides an LED lamp comprising a lamp cap having a lamp cap connecting portion, a lamp cover, a connecting ring connecting the cap connecting portion and the lamp cover, and an LED lighting group, wherein the lamp cover comprises a translucent cover, a light transmissive cover covering the LED lighting group, the connecting ring comprising a first connecting ring connecting the lamp cover and a second connecting ring connecting the lamp head connecting portion, the first connecting ring and the second connecting ring a rotation fit, one of the first connecting ring and the second connecting ring is provided with a toothed protrusion that can position the lamp head and the connecting ring to rotate relative to each other, the first connecting ring and the second The other of the connecting rings is provided with a first recess that cooperates with the toothed projection.

Beneficial effect

The beneficial effects of the invention are:

In the present invention, the first connecting ring and the lamp cover are fixedly connected, and one of the second connecting ring and the base connecting portion is provided with a toothed protrusion for positioning the lamp cap and the connecting ring to rotate with each other, and the second connecting ring and the base of the lamp cap are connected. The first groove is matched with the toothed protrusion, so that the lamp cap and the lamp cover can be rotated and accurately positioned, the illumination angle of the lamp head can be adjusted, the adjustment range of the lamp head is enlarged, and the range of illumination of the LED lamp is wider.

DRAWINGS

1 is a schematic perspective view of a third embodiment of the present invention;

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

Figure 3 is a plan view of a specific embodiment of the present invention;

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

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

FIG. 6 is a schematic cross-sectional structural view of a first connecting ring in a specific 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, an embodiment thereof, The lamp cap 10 having the cap connecting portion 11, the lamp cover, the connecting ring 60 connecting the cap connecting portion 11 and the lamp cover, the LED lamp group and the power source (not shown) are included. A power source is provided in the lamp cap for driving the LED lamp set and the heat sink 50. 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.

The lampshade includes a transmissive cover 30 that covers the LED illuminator 41. The connecting ring 60 includes a first connecting ring 61 that connects the lamp cover, a second connecting ring 62 that connects the cap connecting portion 11, and a partition 64. The first connecting ring 61 and the second connecting ring 62 are 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, and one end of the wire is connected to the power source, and the other end is connected to the LED illuminator 41 and the heat sink 50. The first connecting ring 61 and the second connecting ring 62 are rotationally fitted. One of the first connecting ring 61 and the second connecting ring 62 is provided with a toothed protrusion 12, and the other of the first connecting ring 61 and the second connecting ring 62 is provided with a first groove 66, the toothed protrusion 12 and the first A groove 66 fits.

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 plate 67, and the first groove 66 is disposed on the cantilever plate 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 one embodiment, the LED lamp of the present invention may further include a heat sink, and the circuit board 40 is fixed to the heat sink.

In an embodiment, the lamp cover may further include a heat dissipation cover 20, and the heat dissipation cover 20 and the light transmission cover 30 are fixedly connected, in particular, may be buckled. The heat shield 20 and the light transmissive cover 30 constitute a lampshade cavity having a closed end and an open end, and the lampshade cavity includes an illumination cavity and a heat dissipation cavity. The circuit board 40 is disposed in the lamp housing, the light transmissive cover 30 covers the LED illuminator 41, and the heat ray 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 50 is disposed in the heat dissipation cavity. There is a second gap 42 between the LED lamp group and the closed end, and the second slit 42 penetrates the heat dissipation cavity and the illumination 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, the heat sink includes a heat sink 51 and a base 54. The heat sink 51 is disposed on the base 54. The heat sink 51 may have one or more. The circuit board 40 is connected to the base 54, and the base 54 is connected to the connecting ring 60 by screws. The cross section of the heat sink 50 is matched with the cross section of the heat sink cover 20. The heat sink 50 may include a plurality of heat sinks 51 with a first slit 52 disposed therebetween. The shape of the cross section of the heat sink cover 20 may be a half moon shape. 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 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 63 and the second inlet 31 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 circuit 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 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 inner wall of the cap connecting portion 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, the cap The outer wall of the connecting portion is provided with a second groove that cooperates with the latch, and the latch moves in the second groove to facilitate the fixed connection between the cap connecting portion and the second connecting ring through the latch 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. The cross section of the heat sink is matched with the cross section of the heat sink. The heat sink includes a plurality of heat sinks, and a first slit is disposed between the heat sinks, 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. 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 lamp cap (10) having a lamp cap connecting portion (11), a lamp cover, a connecting ring (60) connecting the cap connecting portion (11) and the lamp cover, and an LED lighting group, wherein the lampshade comprises a translucent cover ( 30) The transmissive cover (30) covers the LED illumination group, and the connection ring (60) includes a first connection ring (61) connecting the lamp cover and a connection connecting the lamp head connection portion (11) a second connecting ring (62), the first connecting ring (61) and the second connecting ring (62) are rotationally engaged, one of the first connecting ring (61) and the second connecting ring (62) 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 second connecting ring (62) The other is provided with a first recess (66) that cooperates with the toothed projection (12).
The LED lamp according to claim 1, 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 2 wherein said second recess (68) is an annular groove surrounding an axis of said second connecting ring (62).
The LED lamp according to claim 1, wherein 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 the latch (13) A second recess (68) that fits.
The LED lamp of claim 4 wherein said second recess (68) is an annular groove that surrounds an axis of said second connecting ring (62).
The LED lamp of claim 1 wherein said toothed projections (12) are disposed on an inner wall of the base joint (11) and said first recess (66) is disposed in a 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 according to claim 6, 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 7 wherein said first recess (66) is a through hole.
The LED lamp of claim 7, wherein the inner wall of the base connecting portion (11) is further provided with a protrusion (14), and the protrusion (14) is higher than the toothed protrusion (12) ).
The LED lamp of claim 1 further comprising a heat sink, said LED light set being secured to said heat sink, said light cover further comprising a heat shield (20), said light shield (30) ) is fixedly connected to the heat dissipation cover (20), and the heat dissipation cover (20) covers the heat sink.
The LED lamp according to claim 10, characterized in that the heat dissipation cover (20) is provided with a heat dissipation opening (21).
The LED lamp of claim 10, 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 (51) adjacent to each other A first slit (52) is disposed between the fins (51).
The LED lamp according to claim 12, characterized in that the surface of the heat sink (51) is provided with a heat dissipation groove (53).
The LED lamp according to claim 13, wherein the heat dissipation groove (53) is a toothed strip heat dissipation groove.
The LED lamp of claim 11, wherein the plurality of heat dissipation openings (21) are each, and each of the first slits (52) corresponds to the heat dissipation opening (21).
The LED lamp of claim 15 wherein said heat dissipation openings (21) are in-line openings and are arranged in parallel.
The LED lamp of claim 10, wherein said light transmissive cover (30) and said heat dissipation cover (20) constitute a lampshade cavity having a closed end and an open end, said lampshade 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 first connection ring (61) is provided with a first inlet (63) for allowing air to enter, and the translucent cover (30) is provided with a second inlet (31), the first inlet (63) and the second inlet (31) ) Connected.
The LED lamp according to claim 17, wherein said first inlet (63) is a groove extending in an axial direction of said first connecting ring (61), said second inlet (31) ) is an opening recessed in the end face of the light transmissive cover (30).
The LED lamp of claim 1 further comprising a reflective sheet (70) that reflects and diffuses light, said reflective sheet (70) having one end disposed on the LED light unit and the other end disposed on the first connection Circle (61).