CN201651909U

CN201651909U - Led fluorescent lamp tube

Info

Publication number: CN201651909U
Application number: CN201020156198XU
Authority: CN
Inventors: 周金成
Original assignee: MYLIGHT PRECISION ELECTRON CO Ltd
Current assignee: MYLIGHT PRECISION ELECTRON CO Ltd
Priority date: 2010-03-30
Filing date: 2010-03-30
Publication date: 2010-11-24
Anticipated expiration: 2020-03-30

Abstract

The utility model discloses an LED fluorescent lamp tube comprising a casing, a plurality of LEDs and a circuit board for electrically connecting the LEDs, wherein the circuit board is integrally formed on the casing; and the LEDs are welded in the casing and electrically connected with the circuit board. The casing of the LED fluorescent lamp tube is an integrated casing integrating heat radiation and the circuit board, thereby improving the heat radiation efficiency, conducting heat generated by the LEDs out rapidly and reducing the attenuation aging of an illuminating chip caused by overhigh temperature; as the casing integrates the heat radiation with the circuit board, the assembly process can be simplified by a large margin only by welding the LEDs on the integrated casing, and the steps of mounting a conventional fluorescent lamp tube such as coating heat conducting adhesive, adding heat conducting silicon pad, assembling the circuit board and the like are not needed; and each single LED on the LED fluorescent lamp tube adopts an encapsulated structure of multi-crystal connection in parallel, thereby effectively improving the brightness and color rendering of the white light of the LEDs.

Description

The LED fluorescent tube

Technical field

The utility model relates to a kind of fluorescent tube, specifically relates to a kind of LED fluorescent tube.

Background technology

Traditional fluorescent lamp is to send ultraviolet ray by the gas between the filament (argon and mercury vapour) conduction, makes the fluorescent material that is applied on the tube inner wall send soft visible light.Traditional fluorescent lamp exists heavy metal substances such as containing mercury in following defective: A, the fluorescent tube, the heavy metal substance that releases after the explosion can cause to the pollution of environment and to the injury of human body, does not meet present environmental protection demand; B, luminous stable inadequately can follow the network operation frequency and produce flicker, and people's eyes are had injury; C, big electric current starter are difficult to when voltage is on the low side light; D, because operate as normal only needs little electric current, and operating voltage is significantly less than supply voltage, adopt that ballast structure power is low, power consumption is big, causes the waste of the energy.

LED has advantages such as long service life, energy consumption is low, radiation is low, has begun to be used for the normal lighting field.But because little, the single illuminance of LED volume is low, when being used for normal lighting, a plurality of LED need be combined, utilize the stack of luminosity, just can reach the brightness identical with traditional fluorescent lamp.The structure of existing LED fluorescent tube is: a plurality of white light LEDs 1 are welded on the wiring board 2 of FR-4 base material or aluminium base, the wiring board that will weld LED again is inserted in acrylic or the aluminium base shell 3, thereby forms the LED fluorescent tube, as shown in Figure 3.The LED fluorescent tube is consistent on the overall dimensions bore with traditional fluorescent lamp, need not starter and ballast, starts soon, and power is little, and no stroboscopic is not easy visual fatigue.But there is following defective: A in existing LED fluorescent tube, generally selects 3528 serial white light LEDs for use, owing to be subjected to the restriction of support, chip, its luminous flux generally can not surpass 10LM, and colour rendering can reach more than 90 between the 70-80; B, the wiring board that is welded with LED is what to separate with shell, by wiring board and air heat is conducted on the shell, seriously hindered the conduction of heat, cause the LED lost of life, the LED fluorescent tube that has is in assembling process, will smear heat-conducting cream or add the thermal conductive silicon rubber cushion between wiring board and shell makes heat export on the shell fast, there is following shortcoming in assembling like this: first, if occurring heat-conducting cream in assembling process smears inhomogeneous, distortion etc. appears in out-of-flatness of silica gel heat conductive pad or wiring board, all can cause heat in time not derive and influence fluorescent tube service life, second, owing to every kind of object thermal conductivity factor difference and when two articles contacts, can be gapped between the contact-making surface, influenced the quick conduction of heat like this; C, assembling process are comparatively complicated, loaded down with trivial details, efficient is not high.

Summary of the invention

In order to overcome above-mentioned defective, the utility model provides a kind of LED fluorescent tube, and it is the integrated casing of one that this LED fluorescent tube has adopted collecting and distributing heat and wiring board, has not only improved radiating efficiency, and has simplified encapsulation process.

The utility model for the technical scheme that solves its technical problem and adopt is:

A kind of LED fluorescent tube comprises shell, some LED and is used to be electrically connected the wiring board of LED that described wiring board is shaped in described shell, and described LED is welded in described shell and electrically connects with described wiring board.That is, the shell of the utility model LED fluorescent tube is that collecting and distributing heat and wiring board are the integrated casing of one, can promote radiating efficiency, and the heat energy that allows LED produce conducts enough fast, and the decay that the reduction luminescence chip causes owing to temperature is too high is aging.Can avoid general traditional LED fluorescent tube will smear thermal paste like this or add the thermal conductive silicon rubber cushion making heat export on the shell fast, can also avoid being out of shape the contact-making surface gap of the bad and two kinds of materials that cause, thereby can effectively avoid owing to heat can not in time be derived the LED brightness decay that causes owing to wiring board.Again because collecting and distributing heat of this shell and wiring board are one, assembling process can be simplified significantly, only LED need be welded on the integrated housing and get final product, need not to smear heat-conducting glue, add the thermal conductive silicon rubber cushion and assemble wiring board etc. as traditional LED fluorescent tube.

The further technical scheme that the utility model adopted is:

Described shell is made up of heat radiation mounting base and diffuser, described wiring board is shaped in described heat radiation mounting base, described LED is welded in described heat radiation mounting base and electrically connects with described wiring board, and described heat radiation mounting base and described diffuser are interlocked.

Described heat radiation mounting base is an aluminum base.

Each described LED inside has at least one blue chip and at least one red light chips, all blue chip parallel connections, and all red light chips parallel connections, blue chip is in parallel with red light chips.The LED monomer encapsulating structure of this polycrystalline parallel connection can effectively improve the brightness and the colour rendering of white light LEDs, and according to test, its luminous flux can reach more than the 20LM, and colour rendering can reach more than 90.

The beneficial effects of the utility model are: the shell of the utility model LED fluorescent tube is that collecting and distributing heat and wiring board are the integrated casing of one, can promote radiating efficiency, the heat energy that allows LED produce conducts enough fast, the decay that the reduction luminescence chip causes owing to temperature is too high is aging, can avoid general traditional LED fluorescent tube will smear thermal paste or add the thermal conductive silicon rubber cushion making heat export on the shell fast, can also avoid being out of shape the contact-making surface gap of the bad and two kinds of materials that cause, thereby can effectively avoid owing to heat can not in time be derived the LED brightness decay that causes owing to wiring board; Again because collecting and distributing heat of this shell and wiring board are one, assembling process can be simplified significantly, only LED need be welded on the integrated housing and get final product, need not to smear heat-conducting glue, add the thermal conductive silicon rubber cushion and assemble wiring board etc. as traditional LED fluorescent tube; Each LED monomer on the utility model LED fluorescent tube all adopts the encapsulating structure of polycrystalline parallel connection, can effectively improve the brightness and the colour rendering of white light LEDs.

Description of drawings

Fig. 1 is for being welded with the schematic diagram of LED on the heat radiation mounting base described in the utility model;

Fig. 2 is the another side view of Fig. 1;

Fig. 3 is the structural representation of existing LED fluorescent tube.

The specific embodiment

Embodiment: a kind of LED fluorescent tube, comprise shell, some LED 1 and be used to be electrically connected the wiring board of LED, described shell is made up of heat radiation mounting base 31 and diffuser, described wiring board is shaped in described heat radiation mounting base, described LED1 is welded in described heat radiation mounting base and electrically connects with described wiring board, and described heat radiation mounting base and described diffuser are interlocked.Promptly, the heat radiation mounting base 31 of the shell of the LED fluorescent tube of present embodiment is that collecting and distributing heat and wiring board are the integral heat dissipation mounting base of one, can promote radiating efficiency, the heat energy that allows LED produce conducts enough fast, and the decay that the reduction luminescence chip causes owing to temperature is too high is aging.Can avoid general traditional LED fluorescent tube will smear thermal paste like this or add the thermal conductive silicon rubber cushion making heat export on the shell fast, can also avoid being out of shape the contact-making surface gap of the bad and two kinds of materials that cause, thereby can effectively avoid owing to heat can not in time be derived the LED brightness decay that causes owing to wiring board.Again because collecting and distributing heat of this heat radiation mounting base and wiring board are one, assembling process can be simplified significantly, only LED need be welded on the incorporate heat radiation mounting base and get final product, need not to smear heat-conducting glue, add the thermal conductive silicon rubber cushion and assemble wiring board etc. as traditional LED fluorescent tube.

It is base material greater than the aluminium of 1.5W/mk that described heat radiation mounting base adopts thermal conductivity factor.

Claims

1. LED fluorescent tube comprises shell, some LED and is used to be electrically connected the wiring board of LED that it is characterized in that: described wiring board is shaped in described shell, and described LED is welded in described shell and electrically connects with described wiring board.

2. LED fluorescent tube according to claim 1, it is characterized in that: described shell is made up of heat radiation mounting base (31) and diffuser, described wiring board is shaped in described heat radiation mounting base, described LED (1) is welded in described heat radiation mounting base and electrically connects with described wiring board, and described heat radiation mounting base and described diffuser are interlocked.

3. LED fluorescent tube according to claim 2 is characterized in that: described heat radiation mounting base is an aluminum base.

4. according to the described LED fluorescent tube of one of claim 1 to 3, it is characterized in that: each described LED inside has at least one blue chip and at least one red light chips, all blue chip parallel connections, all red light chips parallel connections, blue chip is in parallel with red light chips.