CN216693111U

CN216693111U - LED lamp capable of emitting light uniformly

Info

Publication number: CN216693111U
Application number: CN202220233401.1U
Authority: CN
Inventors: 黎兴军; 何锟; 周湖海
Original assignee: SHENZHEN XINHE LIGHTING OPTOELECTRONICS CO Ltd
Current assignee: SHENZHEN XINHE LIGHTING OPTOELECTRONICS CO Ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-06-07
Anticipated expiration: 2032-01-27

Abstract

The application discloses luminous even LED lamp includes: the LED lamp comprises a lamp cap, a connecting part, a base and a PCB (printed circuit board) for generating light, wherein the PCB is arranged in the base, the connecting part is provided with two ends, one end of the connecting part is communicated with the base, and the other end of the connecting part is communicated with the lamp cap; be provided with the leaded light post in the connecting portion, the leaded light post has the orientation income light end and the orientation of PCB board the light-emitting end of lamp holder, it has the first leaded light face of slope to go into the light end, so that the leaded light post towards base direction narrows down in the middle. lED lamp luminous effect in this application is even, light-emitting range is wide, convenient to popularize and use.

Description

LED lamp capable of emitting light uniformly

Technical Field

The application relates to the technical field of LED lamps, in particular to an LED lamp with uniform light emission.

Background

In recent years, in order to meet the requirements of environmental protection and energy conservation in the aspect of lighting, the LED lamps are rapidly popularized and widely applied, and usually, a plurality of LED lamps are combined and installed on an installation plate, and a lamp cap is pointed to an external observation position, so that the requirements of customers on a combined light source are met.

In the existing LED lamp, a light emitting diode is usually installed on a PCB (printed Circuit Board) as a light source, and light is guided to a lamp cap, but the LED lamp is limited by light transmission, the sectional area of the lamp cap is usually far larger than the area of a light guide path, and the whole lamp cap is difficult to uniformly irradiate when the light is transmitted to the lamp cap, so that the light emitting effect of the LED lamp is not uniform.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem of uneven lighting effect of the LED lamp in the prior art,

the application provides a luminous even LED lamp adopts following scheme:

an LED lamp with uniform light emission, comprising: the LED lamp comprises a lamp cap, a connecting part, a base and a PCB (printed circuit board) for generating light, wherein the PCB is arranged in the base, the connecting part is provided with two ends, one end of the connecting part is communicated with the base, and the other end of the connecting part is communicated with the lamp cap; be provided with the leaded light post in the connecting portion, the leaded light post has the orientation the income light end of PCB board and orientation the light-emitting end of lamp holder, it has the first leaded light face of slope to go into the light end, so that the leaded light post towards base direction narrows between two parties.

Through adopting above-mentioned scheme, through setting up the leaded light post between lamp holder and PCB board, and set up the first leaded light face of slope at the income light end of leaded light post to produce certain refraction when making light get into the leaded light post, so that certain inclination has when making light follow light-emitting end directive lamp holder, can shine fully with the circumference of lamp holder, promote the whole luminous degree of consistency of lamp holder. In the traditional technical scheme, the light guide column is usually connected to the lamp holder along the axis of the lamp holder, so that light rays are irradiated into the lamp holder; in this kind of technical scheme, the income light end of leaded light post is just taking place the department to the light source usually to make during light can directly penetrate into the leaded light post, but because the cross sectional dimension of leaded light post is far less than the size of lamp holder usually, the back is penetrated into in the lamp holder to the light in the leaded light post, is difficult to shine the inside circumferential region of lamp holder, leads to the luminous effect of lamp holder inhomogeneous. According to the technical scheme, the light rays are totally internally reflected inside the light guide column after entering the light guide column, so that the light rays are efficiently guided to the lamp cap to reduce loss; the income light end of leaded light post has certain inclination to by the refraction when making to jet into the leaded light post through this first leaded light face, form certain inclination between light and the leaded light post axis, because light-emitting end is towards this lamp holder, consequently light has certain inclination by light-emitting end during directive lamp holder, can play the divergence of preferred to the circumference of lamp holder and shine the effect, promotes the luminous homogeneity of this LED lamp.

Optionally, the circumference of the light guide column is attached to the inner wall of the connecting part.

Through adopting above-mentioned scheme, the connecting portion inner wall is laminated to leaded light post circumference, the inner space of make full use of connecting portion, the cross section size of leaded light post has been guaranteed as far as, under the certain circumstances of the inclination of first leaded light face, the cross-sectional area of leaded light post is great then when light is jetted out by this leaded light post light-emitting end, the contained angle that forms between light and the lamp holder axis is then great, has further guaranteed that light can shine to the bottom circumference of this lamp holder, the luminous homogeneity preferred of lamp holder. On the other hand, the cross-sectional area of leaded light post is great can be convenient for the conduction of light to make the luminous region grow of light-emitting end, the light of emission to the lamp holder is comparatively even.

Optionally, the light-entering end further comprises a second light-guiding surface facing the PCB, the second light-guiding surface is located in the middle of the light-entering end and perpendicular to the axis of the light-guiding column, and one end of the first light-guiding surface, which is close to the base, surrounds the periphery of the second light-guiding surface.

Through adopting above-mentioned scheme, use through the cooperation of the first leaded light face and the second leaded light face at income light end to make this LED lamp central part's when going out light end luminance higher, and can fully illuminate lamp holder circumference, shine the effect preferred. In this application technical scheme, first leaded light face is located second leaded light face circumference to make the light of the first leaded light face of directive to be refracted lamp holder side and the bottom that is difficult to be shone among the traditional art, so that the luminous effect of light-emitting head is more even. The second light guide surface is right opposite to the PCB, so that light rays directly penetrate into the light guide column through the second light guide surface and irradiate to the middle part of the lamp cap along the axis of the light guide column, the brightness of the middle part of the lamp cap is higher, the requirement of a customer on the brightness of the middle part of the LED lamp can be met, and the effect that single-point brightness is larger and the whole light emitting is uniform is achieved.

Optionally, an inclination angle α is formed between the first light guide surface and the second light guide surface, and the range of the inclination angle α is 30 ° to 60 °.

By adopting the scheme, a certain inclination angle alpha is formed between the first light guide surface and the second light guide surface, and if the angle is smaller than 30 degrees, the refraction effect of the light rays through the first light guide surface is poor, so that the diffusion effect of the light rays at the light emitting end is poor, and the irradiation effect of the light rays on the bottom of the lamp holder and the circumferential direction is difficult to ensure; if the angle is larger than 60 degrees, most of the light rays are refracted to the inner side wall of the light guide column, and the light rays are difficult to form a certain inclination angle at the light emitting end, so that the irradiation effect is poor. The range of the inclination angle alpha in the technical scheme is 30-60 degrees, and the luminous uniformity of the lamp cap can be effectively ensured.

Optionally, the inclination angle α is 45 °.

Through adopting above-mentioned scheme, angle of inclination alpha is preferably 45, and under this angle, when light was penetrated into the leaded light post by the PCB board, because angle of inclination alpha of 45 so that the refraction angle preferred of light, light when the leaded light post light-emitting end jets out, formed certain contained angle between the axis with the lamp holder, the effect of dispersing preferred.

Optionally, still including being used for with the fixed position of detaining of mounting panel, the one end of detaining the position is connected on the lamp holder is close to the terminal surface of base, the other end extend to the base, detain and have the confession between position and the connecting portion outer wall detain the space of dodging of position elastic deformation.

Through adopting above-mentioned scheme, be provided with the knot position that can elastic deformation, the one end of detaining the position is connected on the lamp holder, and the other end extends to the direction at base place to make this LED lamp can be through detaining the convenient joint in position on the mounting panel, so that install a plurality of LED lamps on the mounting panel and make up into different arrangements, the suitability is stronger. And an avoiding space is arranged between the buckling position and the outer wall of the connecting part, so that when the buckling position is clamped on the mounting plate, the elastic deformation of the buckling position is not blocked, more stable clamping force is provided, and the hand feeling and the clamping effect are better.

Optionally, the base is internally provided with an installation cavity for installing the PCB, the inner wall of the installation cavity is provided with a guide block, and the guide block is provided with an expansion inclined plane for expanding and tightly matching with the PCB.

Through adopting above-mentioned scheme, be provided with the guide block in the installation cavity to set up the tight inclined plane that expands on the guide block, through the tight complex mode that rises, can install the convenient joint of PCB board in the installation cavity. In some conventional technical solutions, after the PCB board is placed in the mounting cavity, the PCB board is fixed by means of a snap, which is complicated in operation and may cause crushing of the PCB board. According to the technical scheme, the operation process is simple through the expansion installation mode, and the pressure loss of the circuit elements on the PCB can be effectively reduced, so that a certain protection effect on the PCB is achieved.

Optionally, the mounting cavity has a cavity opening facing away from the connecting portion, and an end of the guide block close to the cavity opening has a guide inclined surface.

Through adopting above-mentioned scheme, through be provided with the direction inclined plane on the direction is fast, the PCB board can slide to on the tight inclined plane that expands along this direction inclined plane to play certain guide effect to the motion of PCB board, the mode of slope is convenient for more install the PCB board to the installation cavity in, has promoted the convenient degree of installation to a certain extent.

To sum up, the present application includes at least the following beneficial technical effects:

1. in the conventional technical scheme, the light guide column is generally connected to the lamp cap along the axis of the lamp cap so as to irradiate light into the lamp cap; in this kind of technical scheme, the income light end of leaded light post is just taking place the department to the light source usually to make during light can directly penetrate into the leaded light post, but because the cross sectional dimension of leaded light post is far less than the size of lamp holder usually, the back is penetrated into in the lamp holder to the light in the leaded light post, is difficult to shine the inside circumferential region of lamp holder, leads to the luminous effect of lamp holder inhomogeneous. According to the technical scheme, the light rays are totally internally reflected inside the light guide column after entering the light guide column, so that the light rays are efficiently guided to the lamp cap to reduce loss; the light inlet end of the light guide column is provided with a certain inclination angle, so that the light guide column is refracted when being injected into the first light guide surface, a certain inclination angle is formed between the light and the axis of the light guide column, and the light outlet end faces the lamp cap, so that the light has a certain inclination angle when being emitted to the lamp cap from the light outlet end, a better divergent irradiation effect can be achieved in the circumferential direction of the lamp cap, and the light emitting uniformity of the LED lamp is improved;

2. the first light guide surface and the second light guide surface at the light inlet end are matched for use, so that the brightness of the central part of the LED lamp is higher when the LED lamp is at the light outlet end, the circumference of the lamp cap can be fully illuminated, and the irradiation effect is better. In this application technical scheme, first leaded light face is located second leaded light face circumference to make the light of the first leaded light face of directive to be refracted lamp holder side and the bottom that is difficult to be shone among the traditional art, so that the luminous effect of light-emitting head is more even. The second light guide surface is opposite to the PCB, so that light rays are directly emitted into the light guide column through the second light guide surface and emitted to the middle part of the lamp cap along the axis of the light guide column, the brightness of the middle part of the lamp cap is higher, the requirement of a customer on the brightness of the middle part of the LED lamp can be met, and the effects of larger single-point brightness and uniform integral light emission are realized;

3. a certain inclination angle alpha is formed between the first light guide surface and the second light guide surface, and if the angle is smaller than 30 degrees, the refraction effect of the light rays through the first light guide surface is poor, so that the diffusion effect of the light rays at the light emitting end is poor, and the irradiation effect of the light rays on the bottom of the lamp holder and the circumferential direction is difficult to ensure; if the angle is larger than 60 degrees, most of the light rays are refracted to the inner side wall of the light guide column, and the light rays are difficult to form a certain inclination angle at the light emitting end, so that the irradiation effect is poor. The range of the inclination angle alpha in the technical scheme is 30-60 degrees, and the luminous uniformity of the lamp cap can be effectively ensured.

Drawings

FIG. 1 is a cross-sectional view of an embodiment of the present application showing internal structure;

FIG. 2 is an exploded view of the overall structure of an embodiment of the present application;

FIG. 3 is a schematic view of an embodiment of the present application for illustrating an internal structure of a mounting cavity;

description of reference numerals:

1. a lamp cap; 11. buckling; 12. an annular connecting portion;

2. a connecting portion; 21. a connecting through hole;

3. a base; 31. a mounting cavity; 32. a guide block; 321. expanding the inclined plane; 322. a guide slope; 33. a supporting platform;

4. a PCB board;

5. a light guide pillar; 51. a light input end; 511. a first light guide surface; 512. a second light guide surface; 513. the angle of inclination α.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses an LED lamp with uniform light emission,

referring to fig. 1 and 2, an LED lamp emitting uniform light includes: the LED lamp comprises a lamp cap 1, a connecting part 2, a base 3 and a PCB 4 used as a light source, wherein the connecting part 2 is communicated with the lamp cap 1 and the base 3, a light guide column 5 is arranged in the connecting part 2, the PCB 4 is installed in the base 3, and the light guide column 5 is used for conducting light emitted by the PCB 4 to the lamp cap 1.

Referring to fig. 1 and 2, the base 3 is a square structure, one end of the base 3 is connected to the connecting portion 2, the base 3 has a mounting cavity 31 for mounting the PCB 4 therein, and a side of the mounting cavity 31 away from the connecting portion 2 has a cavity opening so that the PCB 4 can be mounted in the mounting cavity 31 through the cavity opening.

Referring to fig. 1 and 2, the inside of the connecting portion 2 has a light guide cavity for installing the light guide pillar 5, the light guide pillar 5 is of a columnar structure, the light guide pillar 5 is fixedly installed in the light guide cavity along the length direction, and the circumferential side wall of the light guide pillar 5 is attached and fixed to the circumferential inner wall of the light guide cavity. The connecting part 2 has two ends in the length direction, one end is fixedly installed on the base 3, a connecting through hole 21 is formed at the joint of the connecting part 2 and the base 3 in a penetrating manner, and the light guide cavity is communicated with the installation cavity 31 through the connecting through hole 21, and it is worth mentioning that in the embodiment of the application, when the PCB 4 is installed in the installation cavity 31, the connecting through hole 21 is over against the light emitting diode on the PCB 4, so that light can be directly emitted into the light guide cavity; in the embodiment of the present application, the connecting portion 2 and the base 3 are integrally formed, so that the connection between the two is more stable. The light guide post 5 has a light input end 51 for receiving light emitted from the PCB 4 and a light output end for emitting light to the lamp cap 1, and the light input end 51 faces the connecting through hole 21 so as to receive light from the PCB 4.

Referring to fig. 1 and 2, the other end of the connecting portion 2, which is far away from the base 3, is fixedly connected to the lamp cap 1, the outer surface of the lamp cap 1 is composed of a spherical curved surface for emitting light and a connecting plane for connecting with the connecting portion 2, and when the connecting portion 2 is connected with the connecting plane, the light emitting end is connected with the lamp cap 1, so that light can be transmitted into the lamp cap 1 from the light emitting end. The area of the connection plane is larger than the cross-sectional area of the connection part 2, so that when the end of the connection part 2 is connected to the lamp cap 1, the connection plane has a ring-shaped connection part 212 surrounding the periphery of the connection part 2. The annular connecting portion 212 is fixedly provided with a buckling position 11 for being clamped with the mounting plate, one end of the buckling position 11 is fixedly mounted on the annular mounting end face, and the other end of the buckling position 11 extends to the base 3 in parallel with the outer wall of the connecting portion 2. It should be noted that, in the embodiment of the present application, the number of the fastening positions 11 is two, and the two fastening positions 11 are disposed on two opposite sides of the annular mounting end surface, so that when the LED lamp is fastened in the mounting plate, the two fastening positions 11 provide a relatively uniform fastening force. An avoiding space is arranged between the buckling position 11 and the outer wall of the connecting part 2, and the buckling position 11 is pressed by the corresponding clamping hole on the mounting plate and is pushed to the avoiding space so as to ensure that the buckling position 11 provides stable clamping force. The lamp holder 1 is made of a light-transmitting material, so that the light-emitting end can transmit light to the outside after transmitting the light to the lamp holder 1.

Referring to fig. 1 and 3, the light input end 51 includes a first light guide surface 511 and a second light guide surface 512, an inclination angle α 513 is formed between the first light guide surface 511 and the second light guide surface 512, the first light guide surface 511 is inclined gradually toward the middle along the axis of the light guide pillar 5 toward the base 3 so as to narrow the light guide pillar 5, the second light guide surface 512 is disposed at one end of the light guide pillar 5 close to the base 3, and a side edge of the first light guide surface 511 close to the base 3 surrounds the periphery of the second light guide surface 512. Specifically, in the embodiment of the present application, the second light guide surface 512 is disposed perpendicular to the axis of the light guide pillar 5, and the side edge of the first light guide surface 511 close to the susceptor 3 is overlapped with the side edge of the second light guide surface 512 and is integrally formed therewith. The inclination angle α 513 ranges from 30 ° to 60 °, and in the embodiment of the present application, the inclination angle α 513 is 45 ° to make the light guiding pillar 5 better conduct light.

Referring to fig. 1 and 3, a supporting platform 33 is further disposed at an end of the mounting cavity 31 away from the opening of the cavity, the supporting platform 33 surrounds the periphery of the connecting through hole 21, and a surface of the PCB 4 having the light emitting diode can be abutted against and attached to the supporting platform 33. The inner wall of installation cavity 31 still is provided with guide block 32, and the quantity of guide block 32 is two in this application embodiment, and two guide blocks 32 are installed on two relative terminal surfaces of installation cavity 31, and are corresponding, respectively have seted up a spout on two relative lateral margins of PCB board 4, and PCB board 4 slides on guide block 32 through the spout. Specifically, the guide block 32 has an expansion inclined plane 321 for abutting against the sliding groove, and the two expansion inclined planes 321 on the two guide blocks 32 gradually approach to the connecting portion 2 from the cavity opening, so that when the PCB 4 slides to the connecting portion 2 along the guide block 32, the PCB 4 is gradually expanded to stably mount the PCB 4 between the guide blocks 32.

Referring to fig. 1 and 3, the guide block 32 has a guide slope 322 at an end thereof near the cavity opening, the two guide slopes 322 of the two guide blocks 32 are opposite to each other, and the two opposite guide slopes 322 gradually approach from the cavity opening toward the connecting portion 2, so that the PCB 4 can be slid into the mounting cavity 31.

Referring to fig. 1 and 3, an implementation principle of an LED lamp with uniform light emission in an embodiment of the present application is as follows: the PCB 4 with the light emitting diode is arranged in the installation cavity 31 in the base 3, the lamp holder 1 is communicated with the installation cavity 31 through the connecting part 2, the connecting part 2 is provided with a light guide column 5, the light inlet end 51 of the light guide column 5 faces the PCB 4, the light inlet end 51 is provided with an inclined first light guide surface 511 and a second light guide surface 512 perpendicular to the axis of the light guide column 5, and light emitted by the PCB 4 is emitted into the light guide column 5 through the first light guide surface 511 and the second light guide surface 512 and then is emitted into the lamp holder 1 through the light outlet end of the light guide column 5; still be provided with on this LED lamp and detain position 11, a plurality of LED lamps can be through detaining 11 joints in position on same mounting panel.

The embodiments of the present invention are preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, wherein like parts are denoted by like reference numerals. Therefore, the method comprises the following steps: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An LED lamp with uniform light emission, comprising: the LED lamp comprises a lamp cap (1), a connecting part (2), a base (3) and a PCB (4) used for generating light, wherein the PCB (4) is arranged inside the base (3), the connecting part (2) is provided with two ends, one end of the connecting part is communicated with the base (3), and the other end of the connecting part is communicated with the lamp cap (1); be provided with leaded light post (5) in connecting portion (2), leaded light post (5) have the orientation income light end (51) of PCB board (4) and orientation the light-emitting end of lamp holder (1), income light end (51) have the first leaded light face (511) of slope, so that leaded light post (5) are towards base (3) direction narrows in the middle.

2. The LED lamp with uniform light emission according to claim 1, wherein the circumference of the light guide pillar (5) is attached to the inner wall of the connecting part (2).

3. The LED lamp with uniform light emission according to claim 2, wherein the light incident end (51) further comprises a second light guide surface (512) facing the PCB (4), the second light guide surface (512) is located in the middle of the light incident end (51) and perpendicular to the axis of the light guide pillar (5), and one end of the first light guide surface (511) close to the base (3) surrounds the periphery of the second light guide surface (512).

4. A uniformly emitting LED lamp as claimed in claim 3, wherein the first light guide surface (511) and the second light guide surface (512) have an inclination angle α (513) therebetween, said inclination angle α (513) being in the range of 30 ° to 60 °.

5. A uniformly emitting LED lamp as claimed in claim 4, wherein said tilt angle α (513) is 45 °.

6. The LED lamp with uniform light emission according to claim 1, further comprising a buckling position (11) fixed with the mounting plate, wherein one end of the buckling position (11) is connected to the end surface, close to the base, of the lamp holder (1), the other end of the buckling position extends towards the base (3), and an avoiding space for elastic deformation of the buckling position (11) is formed between the buckling position (11) and the outer wall of the connecting portion (2).

7. The LED lamp with uniform light emission according to claim 1, wherein the base (3) is internally provided with a mounting cavity (31) for mounting the PCB (4), the inner wall of the mounting cavity (31) is provided with a guide block (32), and the guide block (32) is provided with an expansion inclined surface (321) for expansion fit with the PCB (4).

8. The LED lamp with uniform light emission according to claim 7, wherein a cavity opening is formed in one end of the mounting cavity (31) far away from the connecting part (2), and a guide inclined surface (322) is formed at an end part, close to the cavity opening, of the guide block (32).