CN216079376U

CN216079376U - LED straight lamp

Info

Publication number: CN216079376U
Application number: CN202121960117.6U
Authority: CN
Inventors: 曹胜军; 蒲纪忠; 甘彩英; 赵艺佼
Original assignee: CH Lighting Technology Co Ltd
Current assignee: CH Lighting Technology Co Ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-03-18
Anticipated expiration: 2031-08-19

Abstract

The application discloses LED straight tube lamp, including the fluorescent tube, the end cover, LED lamp strip, drive power supply and separator, the fluorescent tube is cavity setting, the end cover sets up in the fluorescent tube both ends in order to seal the fluorescent tube opening, LED lamp strip is pasted at the lamp inside pipe wall, LED lamp strip includes the base plate and fixes the LED lamp pearl on the base plate, drive power supply installs in the fluorescent tube, drive power supply includes the circuit board and a plurality of electronic components who welds on the circuit board, the separator sets up between circuit board and LED lamp strip. Compared with the prior art, the LED straight tube lamp has the advantages that the isolating piece in the LED straight tube lamp can play a role in protecting the LED lamp strip, and the driving power supply is prevented from wearing the surface of the LED lamp strip.

Description

LED straight lamp

Technical Field

The application relates to the field of LED lamps, in particular to an LED straight tube lamp.

Background

The LED illumination is light emitting diode illumination, and is a semiconductor solid light emitting device. The solid semiconductor chip is used as a luminescent material, and the carriers are compounded in the semiconductor to release excess energy to cause photon emission, so that red, yellow, blue and green light is directly emitted.

The LED straight tube lamp comprises a lamp tube, end covers fixed at two ends of the lamp tube, an LED light bar installed in the lamp tube and a driving power supply installed in the lamp tube and electrically connected with the LED light bar. The inventor finds that under the condition of assembly, transportation or other shaking conditions, the driving power supply may interfere with other components in the lamp tube, even short circuit occurs, and potential safety hazards are caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the present application provides an LED straight lamp, including:

a lamp tube arranged in a hollow manner;

end covers arranged at two ends of the lamp tube to seal the opening of the lamp tube;

the LED lamp strip is adhered to the inner wall of the lamp tube and comprises a substrate and LED lamp beads fixed on the substrate;

a driving power supply installed in the lamp tube, the driving power supply including a circuit board and a plurality of electronic components soldered on the circuit board;

and the isolating piece is arranged between the circuit board and the LED lamp strip.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the circuit board has a first surface and a second surface, the electronic components are divided into two groups according to different heights, a higher electronic component is arranged on the first surface, a lower electronic component is arranged on the second surface, and the spacer is arranged between the second surface and the LED light bar.

Optionally, the spacer is a sheet-like structure, and abuts against the second surface.

Optionally, the spacer is secured against the second surface by a tie.

Optionally, the separator is an insulating paper.

Optionally, one side of the end cover, which faces away from the lamp tube, is provided with a lamp pin for realizing electrical connection, and the lamp pin penetrates through the side wall of the end cover and is electrically connected with an electronic component on the driving power supply.

Optionally, a limiting step is arranged in the end cover, and the end of the lamp tube is inserted into the end cover on the corresponding side and is attached and fixed to the limiting step through a bonding material.

Optionally, the end cap comprises a sleeve at the periphery of the lamp tube and a sealing plate fixed at one axial end of the sleeve, so that the end cap has a closed end and an open end;

the sleeve is reduced by itself to form the limiting step.

Optionally, the substrate includes a metal layer, an insulating layer and a circuit layer, the LED lamp bead is welded to the circuit layer, and the driving power supply is electrically connected to the circuit layer.

Optionally, the surface of the substrate is coated with a solder resist ink layer.

The LED straight tube lamp has the advantages that the isolating piece can play a role in protecting the LED lamp strip, and the surface of the LED lamp strip is prevented from being abraded by the driving power supply.

Drawings

FIG. 1 is a schematic structural diagram of an LED straight lamp according to an embodiment of the present disclosure;

FIG. 2 is a partial cross-sectional view of the LED straight tube lamp of FIG. 1;

FIG. 3 is a schematic diagram of the driving power supply of FIG. 2;

FIG. 4 is a schematic diagram of the driving power supply in FIG. 2

Fig. 5 is a schematic structural diagram of the substrate in fig. 2.

The reference numerals in the figures are illustrated as follows:

100. an LED straight lamp;

10. a lamp tube;

20. an end cap; 21. a sleeve; 211. a diameter expanding section; 212. a reducing section; 22. closing the plate; 23. a limiting step; 24. a lamp foot;

30. an LED light bar; 31. a substrate; 311. a metal layer; 312. an insulating layer; 313. a circuit layer; 314. a solder resist ink layer; 32. LED lamp beads;

40. a drive power supply; 41. a circuit board; 411. a first surface; 412. a second surface; 42. an electronic component;

50. a spacer; 51. and (6) binding the belt.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and 2, the present application provides a straight LED tube lamp 100, which includes a lamp tube 10, end caps 20 disposed at two ends of the lamp tube 10, an LED light bar 30 adhered to an inner wall of the lamp tube 10, and a driving power source 40 installed in the lamp tube 10 and electrically connected to the LED light bar 30.

The lamp tube 10 has a length direction (e.g., X direction in fig. 1), the lamp tube 10 is disposed in a hollow manner, and two ends of the lamp tube 10 in the length direction are open, the LED light bar 30 and the driving power source 40 enter the lamp tube 10 from one end of the lamp tube 10 and are fixedly mounted in the lamp tube 10 by means of adhesion, and finally, the two ends of the lamp tube 10 are closed by the end caps 20. In the present embodiment, the cross section of the lamp 10 is circular, and the end cap 20 is sleeved on the outer side of the end of the lamp 10; the lamp tube 10 is made of glass, and the end cap 20 is made of plastic. Of course, in other embodiments, the cross section of the lamp 10 may be square, and the material of the lamp 10 may be all plastic.

In the present embodiment, as shown in fig. 2, the LED light bar 30 includes a substrate 31 and LED light beads 32 fixed on the substrate 31. The substrate 31 has a length direction, and when the LED light bar 30 is installed in the lamp tube 10, the length direction of the substrate 31 and the length direction of the LED light bar 30 are the same. The number of the LED lamp beads 32 is multiple, each LED lamp bead 32 is arranged at intervals along the length direction of the substrate 31, and the distance between two adjacent LED lamp beads 32 is set according to the actual needs of the LED straight lamp 100, which is not described herein.

In this embodiment, as shown in fig. 5, the substrate 31 includes a metal layer 311, an insulating layer 312, and a circuit layer 313, the LED beads 32 are soldered to the circuit layer 313, and the pins are electrically connected to the circuit layer 313. The substrate 31 may be a metal substrate, preferably an aluminum substrate, or an FR-4 glass fiber board. In some embodiments, the surface of the substrate 31 is coated with a solder resist ink layer 314, and the solder resist ink layer 314 is white to improve light reflection efficiency.

In the prior art, the driving power source 40 may interfere with other components in the lamp tube 10 during assembly, transportation or other shaking conditions of the LED straight lamp 100. Specifically, the driving power source 40 wears the surface of the LED light bar 30, and the solder resist ink layer 314 on the surface of the LED light bar 30 is worn to cause short circuit of the LED light bar 30.

In order to solve the above technical problem, in this embodiment, as shown in fig. 2, the LED straight tube lamp 100 further includes a spacer 50, the spacer 50 is disposed between the circuit board 41 and the LED light bar 30, and the spacer 50 can protect the LED light bar 30 and prevent the driving power source 40 from wearing the surface of the LED light bar 30.

In a specific configuration of the circuit board 41, referring to one embodiment, as shown in fig. 2 to 4, the circuit board 41 has a first surface 411 and a second surface 412, the electronic components 42 are divided into two groups according to different heights, the higher electronic component 42 is disposed on the first surface 411, the lower electronic component 42 is disposed on the second surface 412, the spacer 50 is located between the second surface 412 and the LED light bar 30, and the second surface 412 is disposed opposite to the substrate 31. In some embodiments, the electronic components 42 below 5mm are lower electronic components 42, and the electronic components 42 above 5mm are higher electronic components 42, so as to reduce the volume of the driving power source 40, thereby fully utilizing the space in the lamp 10.

In this embodiment, the separator 50 is a sheet-like structure that abuts the second surface 412. The shape of the spacer 50 is substantially the same as that of the circuit board 41, so that the spacer 50 can have an effect of full-scale isolation. In another embodiment, the spacer 50 is an insulating paper.

In order to be able to fix the relative position of the spacer 50 and the circuit board 41, it is referred to an embodiment in which the spacer 50 is fixed against the second surface 412 by a tie tape 51. The band 51 may be closed loop or partially open C-shaped, and different configurations of the band 51 may achieve different technical effects, and may also be adjusted according to different characteristics of the spacer 50. In some embodiments, tie 51 is an adhesive tape.

In the present embodiment, as shown in fig. 2, the side of the end cap 20 opposite to the lamp 10 is provided with a lamp pin 24 for electrical connection, and the lamp pin 24 penetrates through the side wall of the end cap 20 to be electrically connected to the electronic component 42 on the driving power source 40. The lamp pins 24 are used for electrically connecting the driving power supply 40 and an external circuit, so as to realize the function of the lamp. In some embodiments, the lamp pins 24 are disposed in the lamp tube 10 and electrically connected to the driving power source 40 through wires.

In the connection manner of the end cap 20 and the lamp tube 10, referring to fig. 2, in one embodiment, a limiting step 23 is provided in the end cap 20, and the end of the lamp tube 10 is inserted into the end cap 20 on the corresponding side and is attached to the limiting step 23 by an adhesive material (e.g., glue).

In the specific arrangement of the end cap 20, referring to one embodiment, the end cap 20 includes a sleeve 21 disposed at the periphery of the lamp tube 10 and a closing plate 22 fixed to one axial end of the sleeve 21, such that the end cap 20 has a closed end and an open end; the limit step 23 is located on the inner wall of the sleeve 21. The sleeve 21 has an axis; when the sleeve 21 is fitted outside the lamp 10, the axis of the sleeve 21 is parallel to the axis of the lamp 10 (in the present embodiment, the axis of the sleeve 21 is aligned with the axis of the lamp 10). In some embodiments, the sleeve 21 and the closing plate 22 are integrally disposed to enhance the structural strength of the end cap 20, and reduce the difficulty of the processing of the end cap 20.

In the present embodiment, the sleeve 21 forms the limit step 23 by reducing itself. Specifically, the sleeve 21 includes an expanded diameter section 211 and a reduced diameter section 212 along the axial direction of the sleeve 21 (when the wall thickness of the sleeve 21 is consistent, the inner diameter of the expanded diameter section 211 is larger than that of the reduced diameter section 212), a limit step 23 is formed at the joint of the expanded diameter section 211 and the reduced diameter section 212, and the limit step 23 and the sleeve 21 are integrally formed, so that the structural strength of the sleeve 21 can be enhanced, and the difficulty of the processing process of the sleeve 21 can be reduced.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims

An LED straight tube lamp, comprising:

a lamp tube arranged in a hollow manner;

end covers arranged at two ends of the lamp tube to seal the opening of the lamp tube;

the LED lamp strip is adhered to the inner wall of the lamp tube and comprises a substrate and LED lamp beads fixed on the substrate;

a driving power supply installed in the lamp tube, the driving power supply including a circuit board and a plurality of electronic components soldered on the circuit board;

and the isolating piece is arranged between the circuit board and the LED lamp strip.
2. The LED straight lamp tube according to claim 1, wherein the circuit board is provided with a first surface and a second surface, the electronic components are divided into two groups according to different heights, the higher electronic component is arranged on the first surface, the lower electronic component is arranged on the second surface, and the spacer is located between the second surface and the LED lamp strip.
3. The LED straight lamp according to claim 2, wherein the spacer is of a sheet-like structure and abuts against the second surface.
4. The LED straight lamp tube according to claim 3, wherein the spacer is fixed against the second surface by a tie.
5. The LED straight lamp according to claim 3, wherein the spacer is an insulating paper.
6. The LED straight tube lamp according to claim 1, wherein a lamp pin for realizing electric connection is arranged on one side of the end cover, which faces away from the lamp tube, and the lamp pin penetrates through the side wall of the end cover to be electrically connected with an electronic component on the driving power supply.
7. The LED straight tube lamp according to claim 1, wherein a limit step is arranged in the end cover, and the end part of the lamp tube is inserted into the end cover on the corresponding side and is attached and fixed with the limit step through an adhesive material.
8. The LED straight lamp according to claim 7, wherein the end cap comprises a sleeve at the outer periphery of the lamp tube and a sealing plate fixed to one axial end of the sleeve, such that the end cap has a closed end and an open end;

the sleeve is reduced by itself to form the limiting step.
9. The LED straight lamp tube according to claim 1, wherein the substrate comprises a metal layer, an insulating layer and a circuit layer, the LED lamp beads are welded on the circuit layer, and the driving power supply is electrically connected with the circuit layer.
10. The LED straight lamp according to claim 1 or 9, wherein a surface of the substrate is coated with a solder resist ink layer.