CN203656605U - LED lamp tube - Google Patents

Abstract

The utility model relates to the technical field of LED illumination devices and discloses an LED lamp tube. The LED lamp tube comprises a glass tube, lamp heads fixedly arranged at the two ends of the glass tube, an LED light source plate fixedly arranged in an inner cavity of the glass tube, and drive power supplies which are integrally arranged on the LED light source plate and used for driving the LED light source plate to emit light, wherein the outer wall of the glass tube is covered with a diffusion membrane used for increasing the light-emitting angle, improving dazzle light and protecting the glass tube. According to the LED lamp tube disclosed by the utility model, the drive power supplies are integrated with the LED light source plate, so that the used space of the lamp tube is saved, the heat dissipation efficiency is improved, and the service life of the lamp tube is prolonged; the outer wall of the glass tube is covered with the diffusion membrane, so that the light-emitting angle of the LED lamp tube is increased, the dazzle light is improved, and the accidental injury on a human body caused by the broken glass tube is effectively prevented.

Description

A kind of LED light tube

technical field

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

Background technique

With the development of LED lighting technology, LED lighting equipment is more and more widely used in people's lives. Among them, LED bulbs, LED tubes and LED spotlights have greatly replaced traditional bulbs, tubes and spotlights. The momentum of the lamp.

At present, the common LED lamps on the market mainly include plastic LED lamps, glass LED lamps and half-aluminum half-plastic cover LED lamps, etc., and the power supply installation methods are divided into two modes: built-in and external. The built-in lamp tube is inconvenient to install and needs to be replaced with the lamp tube, which is likely to cause a lot of cost and waste of resources; while the power supply built-in lamp tube has the following problems:

For plastic LED lamp tubes, the heat dissipation effect is not good, it is easy to yellow and deform, and the cost is high; for glass LED lamp tubes, the heat dissipation effect is not good, the light output angle is small, and the light is dazzling and easy to cause damage to human eyes; For half-aluminum and half-plastic LED lamp tubes, although the heat dissipation effect is better, the lamp caps at both ends can be disassembled at will, and the internal live parts may cause harm to the human body, and the material cost is high, and the production and assembly are time-consuming.

Utility model content

The purpose of this utility model is to provide an LED lamp tube, aiming at solving the problem in the prior art that the ordinary glass LED lamp tube exists, the light output angle is small and the irradiating light is glaring, the power supply is installed separately and the space is wasted, the assembly is time-consuming, and there is no corresponding The auxiliary heat dissipation part of the power supply is not conducive to heat dissipation and other issues.

The utility model is achieved in this way, an LED lamp tube, which includes a glass tube, a lamp cap fixed at both ends of the glass tube, an LED light source board fixed in the inner cavity of the glass tube, and an LED light source board integrated in the The LED light source board is used to drive the driving power to emit light, and the outer wall of the glass tube is covered with a diffusion film for increasing the light angle, improving glare and protecting the glass tube.

In one embodiment, the LED lamp tube further includes a heat dissipation aluminum strip that penetrates the inner cavity of the glass tube along the axial direction of the glass tube, and the heat dissipation aluminum strip is fixed on the inner wall of the glass tube with a high thermal conductivity adhesive , the LED light source board is fixed on the heat dissipation aluminum bar.

Preferably, the heat dissipation aluminum strip is a hollow strip structure, including a sunken groove for fixing the LED light source board, and a heat dissipation cavity below the sunken groove.

Preferably, the LED light source board includes a substrate fixed in the sunken groove, and a plurality of LED chips packaged on the substrate and electrically connected to each other.

Specifically, the plurality of LED chips are electrically connected in series or in parallel.

Specifically, the substrate is riveted or welded to the heat dissipation aluminum strip.

Specifically, the driving power is separated at both ends of the substrate and electrically connected to the LED chip.

Specifically, one end of the lamp head is electrically connected to the driving power supply through a conductive sheet, and pins for connecting to an external power supply protrude from the other end of the lamp head.

Compared with the prior art, the LED lamp tube proposed by the utility model integrates the drive power supply and the LED light source board, which saves the use space of the lamp tube, improves the heat dissipation efficiency, and prolongs the service life of the lamp tube; The outer wall of the glass is coated with a diffusion film, which increases the light output angle of the LED lamp tube, improves glare, and effectively prevents accidental damage to the human body when the glass tube is broken.

Description of drawings

Fig. 1 is the schematic diagram of the explosion decomposition of the LED lamp tube provided by the embodiment of the present invention;

Fig. 2 is a schematic cross-sectional view of the LED lamp tube provided by the embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

The realization of the utility model is described in detail below in conjunction with specific embodiments.

As shown in Figures 1-2, it is a preferred embodiment provided by the utility model.

The LED light tube provided in this embodiment includes a glass tube 1, an LED light source board 2, two driving power sources 3 and two lamp holders 4, wherein the LED light source board 2 is fixed on the inner wall of the glass tube 1 and runs along the glass tube 1. The axial direction runs through the inner cavity of the glass tube 1, and two driving power sources 3 are respectively arranged at both ends of the LED light source board 2. Here, the two driving power sources 3 are used to drive the LED light source board 2 to emit light. In addition, the two lamp holders 4 It is fixedly arranged at both ends of the glass tube 1. In this embodiment, the drive power supply 3 and the LED light source board 2 adopt an integrated design, and the outer wall of the glass tube 1 is also coated with a layer of diffusion film 8, and the inside of the diffusion film 8 Contains diffusing substances, which are used to increase the angle of light output and improve the uniformity of light output.

The above-mentioned LED lamp tube has the following characteristics:

1) The drive power supply 3 and the LED light source board 2 are integrated design. First, the volume of the drive power supply 3 is reduced to save the space of the LED lamp tube, so that the light source can sink to the bottom of the lamp tube as a whole, thus increasing the light output angle Secondly, the driving power supply 3 is directly fixed on the LED light source board 2, which is conducive to the heat dissipation of key components in the driving power supply 3 and improves the service life of the lamp tube; in addition, the integrated design of the driving power supply 3 and the LED light source board 2 is convenient to adopt Fully automatic equipment for processing operation, which makes the production and assembly convenient and time-saving, and greatly reduces the product cost;

2) The outer wall of the glass tube 1 is covered with a layer of diffusion film 8 containing diffusible substances, which increases the light output angle of the lamp tube and improves the uniformity of light output, making the light softer and more uniform, without causing harm to human eyes. harm;

3) The lamp holder 4 is fixedly installed at both ends of the glass tube 1 and cannot be disassembled, so that the electrification inside the lamp tube will not cause harm to the human body, ensuring the personal safety of the user.

In order to improve the heat dissipation efficiency of the LED lamp tube, a heat dissipation aluminum strip 7 is fixed on the inner wall of the above-mentioned glass tube 1 by high thermal conductivity adhesive glue, and the heat dissipation aluminum strip 7 penetrates the inner cavity of the glass tube 1 along the axial direction of the glass tube 1. Of course , in other embodiments, according to actual conditions and needs, the heat dissipation aluminum strip 7 can also be fixed on the inner wall of the glass tube 1 in other ways; in this embodiment, the above-mentioned LED light source board 2 is fixed on the heat dissipation aluminum strip 7 On the surface, in this way, for the integrated drive power supply 3 and LED light source board 2, the heat dissipation aluminum strip 7 can not only effectively dissipate heat for the light source part on the LED light source board 2, but also effectively heat the key components of the drive power supply 3. Heat dissipation ensures the real service life of the LED lamp.

In this embodiment, the above-mentioned heat dissipation aluminum strip 7 is a hollow strip structure, which includes a sunken groove 71 located on the upper side of the heat dissipation aluminum strip 7, and a heat dissipation chamber 72 located on the lower side of the heat dissipation aluminum strip 7, wherein the sunken groove 71 is used for To accommodate and fix the above-mentioned LED light source board 2, the purpose of setting the heat dissipation cavity 72 is to increase the effective heat dissipation area of the heat dissipation aluminum strip 7, thus further improving the heat dissipation capacity of the heat dissipation aluminum strip 7. Of course, in other embodiments, According to the specific shape of the LED light tube and other needs, the heat dissipation aluminum strip 7 can also be in other forms of structure, such as grid shape, column shape and so on.

In this embodiment, the above-mentioned LED light source board 2 includes a substrate 21 and a plurality of LED chips 22, wherein the substrate 21 is a strip structure matching the shape of the above-mentioned sinking groove 71, and naturally, the substrate 21 is fixed in the above-mentioned sinking groove 71 The LED chips 22 are packaged on the upper surface of the substrate 21, and each LED chip 22 is distributed at intervals. Of course, in terms of electrical connection, each LED chip 22 can be connected in series or in parallel.

For the above-mentioned fixing method of the substrate 21 and the heat dissipation aluminum strip 7, the present embodiment adopts that the substrate 21 is riveted and fixed in the sinker 71 of the heat dissipation aluminum strip 7. Of course, in other embodiments, the substrate 21 can also be fixed by welding. In the sunken groove 71 of the heat dissipation aluminum strip 7, or clipped and fixed or the like.

In this embodiment, the inner end of the above-mentioned lamp cap 4 is electrically connected to the driving power supply 3 through the conductive sheet 5, and the outer end of the lamp cap 4 has pins 6 protruding outward, and the pins 6 are used for plugging in a socket electrically connected to the external power supply. The lamp holder, in this way, the external power supply supplies power to the lamp holder, and then the current passes through the pin 6 and the conductive sheet 5 to the driving power supply 3, and then the driving power supply 3 drives the LED light source board 2 to emit light.

As mentioned above, the inner end of the lamp cap 4 is electrically connected to the driving power supply 3 through the conductive sheet 5. Here, the two driving power supplies 3 are respectively integrally arranged at both ends of the substrate 21, and are respectively electrically connected to the LED chips 22. In this way, The entire LED light tube constitutes an electrical path.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (8)

1. An LED light tube, characterized in that it comprises a glass tube, lamp holders fixed at both ends of the glass tube, an LED light source board fixed at the inner cavity of the glass tube, and an integrated LED light source board The outer wall of the glass tube is covered with a diffusion film for increasing the light output angle, improving glare and protecting the glass tube. the 2. The LED lamp tube according to claim 1, further comprising a heat dissipation aluminum strip penetrating the inner cavity of the glass tube along the axial direction of the glass tube, and the heat dissipation aluminum strip is fixed on the On the inner wall of the glass tube, the LED light source board is fixed on the heat dissipation aluminum strip. the 3. The LED light tube according to claim 2, wherein the heat dissipation aluminum strip is a hollow strip structure, including a sunken groove for fixing the LED light source board, and a heat dissipation plate under the sunken groove. cavity. the 4. The LED light tube according to claim 3, wherein the LED light source board comprises a substrate fixed in the sinker, and a plurality of LED chips packaged on the substrate and electrically connected to each other . the 5. The LED lamp tube according to claim 4, wherein the plurality of LED chips are electrically connected in series or in parallel. the 6 . The LED lamp tube according to claim 4 , wherein the base plate is riveted or welded to the heat dissipation aluminum strip. 6 . the 7 . The LED lamp tube according to claim 4 , wherein the driving power is separated at two ends of the substrate and is electrically connected to the LED chip. 7 . the 8. The LED lamp tube according to any one of claims 1-7, wherein one end of the lamp cap is electrically connected to the driving power supply through a conductive sheet, and the other end of the lamp cap protrudes outward for Pin for connecting external power supply. the

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