CN217875390U - LED straight lamp - Google Patents

Abstract

The application discloses LED straight lamp, including lamp strip, non-light tight fluorescent tube, end cover and drive power supply. The lamp strip comprises a substrate and a plurality of LED lamp beads fixed on the substrate; the light tube is configured to accommodate the light bar; the end covers are fixed at two ends of the lamp tube; the driving power supply comprises a circuit board and electronic components arranged on the circuit board, at least part of the circuit board extends into the lamp tube, and isolation elements for avoiding mutual contact are arranged between the electronic components and the lamp strip. The LED straight tube lamp can effectively avoid the problem of abnormal driving caused by short circuit between the electronic component and the lamp strip due to the fact that the isolation element is arranged between the electronic component and the lamp strip.

Description

LED straight lamp

Technical Field

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

Background

The LED lighting is light emitting diode lighting 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, wherein the driving power supply comprises a circuit board and electronic components arranged on the circuit board. However, when the driving power supply is extended into the lamp tube for assembly, because the volume of part of electronic components is large, the electronic components are easily contacted with the welding point on the lamp strip, and when the top of the electronic components is made of a conductive material, the electronic components and the lamp strip can be short-circuited, so that the problem of abnormal driving is caused.

SUMMERY OF THE UTILITY MODEL

The application provides a LED straight tube lamp, has solved the welding point contact production short circuit of drive power supply installation back electronic components and lamp strip, causes the unusual problem of drive.

The application provides a LED straight lamp includes:

the LED lamp comprises a lamp strip and a plurality of LED lamp beads, wherein the lamp strip comprises a substrate and the plurality of LED lamp beads fixed on the substrate;

a light-transmissive light tube configured to receive the light bar;

the end covers are fixed at two ends of the lamp tube;

the lamp strip comprises a lamp strip and a driving power supply, wherein the driving power supply comprises a circuit board and electronic components arranged on the circuit board, at least part of the circuit board extends into the lamp strip, and isolation elements used for avoiding mutual contact are arranged between the electronic components and the 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 electronic component includes a plurality of electrolytic capacitors, and the electrolytic capacitors are all provided with isolation elements.

Optionally, the isolation element is a non-conductor and is fixedly connected to an end face of the electrolytic capacitor.

Optionally, the isolation element is white latex.

Optionally, the circuit board has a first surface and a second surface opposite to each other, the electronic components are divided into two groups, the first group is higher than 5mm in height, the second group is less than or equal to 5mm in height, the first group is arranged on the first surface, and the second group is arranged on the second surface.

Optionally, the first surface of the circuit board is disposed opposite to the substrate.

Optionally, the circuit board has a length direction and a width direction, and a pad is disposed on one side of the circuit board close to the end cap in the length direction.

Optionally, the driving power supply is completely disposed inside the lamp tube.

Optionally, the inner wall of the lamp tube is coated with a diffusion layer.

The LED straight tube lamp can effectively avoid the problem of abnormal driving caused by short circuit between the electronic component and the lamp strip due to the fact that the isolation element is arranged between the electronic component and the lamp strip.

Drawings

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

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

FIG. 3 is a partial cross-sectional view of an LED straight tube lamp in an embodiment of the present application;

FIG. 4 is a schematic diagram of the driving power supply shown in FIG. 3;

fig. 5 is a schematic diagram of another view angle of the driving power supply in fig. 3.

The reference numerals in the figures are illustrated as follows:

100. an LED straight lamp;

10. a lamp tube;

20. an end cap;

30. a light bar; 31. a substrate; 32. LED lamp beads; 33. a welding point;

40. a driving power supply; 41. an electronic component; 411. a first electronic component; 412. a second electronic component; 42. a circuit board; 421. a first surface; 422. a second surface; 43. an isolation element; 44. an electrolytic capacitor; 45. and a bonding pad.

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 some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to 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. 2, in the conventional LED straight lamp, a driving power source 40 is partially or entirely installed in the lamp tube 10 and is disposed opposite to the light bar 30. When the electronic component 41 is mounted specifically, since the volume of part of the electronic component 41 is relatively large, the electronic component is easily contacted with the welding point 33 on the light bar 30, and when the top of the electronic component 41 is made of a conductive material, the electronic component and the top may generate a short circuit, which causes a problem of abnormal driving.

In order to solve the technical problem, in the present embodiment, as shown in fig. 1 and 3 to 5, the present application provides an LED straight lamp 100, which includes a lamp strip 30, a light-transmitting lamp tube 10, an end cap 20, and a driving power source 40.

The light bar 30 comprises a substrate 31 and a plurality of LED lamp beads 32 fixed on the substrate 31; the light tube 10 is configured to accommodate a light bar 30; the number of the end caps 20 is 2, and the end caps are fixed at two ends of the lamp tube 10; the driving power source 40 includes a circuit board 42 and an electronic component 41 disposed on the circuit board 42, the circuit board 42 at least partially extends into the lamp 10, and an isolation element 43 is disposed between the electronic component 41 and the light bar 30 for avoiding mutual contact.

In the present embodiment, the lamp 10 is hollow and has two open ends, the light bar 30 and the driving power source 40 enter the lamp 10 from one end of the lamp 10, and finally the two ends of the lamp 10 are sealed 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 tube 10 may be square, etc.

The light bar 30 is installed in the lamp tube 10, and the length direction of the substrate 31 is consistent with the length direction of the light bar 30. 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-tube lamp 100. In some embodiments, the substrate 31 is a metal substrate, such as an aluminum substrate. The substrate 31 comprises a metal layer, an insulating layer, a circuit layer and a solder mask layer, wherein the solder mask layer is white so as to improve the reflection efficiency, and the LED lamp beads 32 are welded on the circuit layer. The substrate 31 may alternatively be an FR-4 glass fiber board, which has no metal layer.

The LED straight lamp 100 provided by the application can effectively avoid the problem of abnormal driving caused by short circuit between the electronic component 41 and the lamp strip 30 due to the fact that the isolation element 43 is arranged between the electronic component 41 and the lamp strip 30.

In one embodiment, the electronic component 41 includes a plurality of electrolytic capacitors 44, and each electrolytic capacitor 44 is provided with a separation element 43. Specifically, the electrolytic capacitor 44 has a large volume, and the top of the electrolytic capacitor 44 is an aluminum film, when the distance between the electrolytic capacitor 44 and the welding point 33 of the light bar 30 is too small, since both of the electrolytic capacitor 44 and the welding point have good conductivity, short circuit may occur to cause the LED lamp bead 32 to be out of operation (i.e., abnormal driving), and therefore, in order to avoid this problem, the isolating element 43 of the present application is a non-conductor and is fixedly connected to the end face of the electrolytic capacitor 44.

Further, for convenience of operation and cost saving, the isolation element 43 in this embodiment is white latex. Of course, other non-conductive materials, such as plastic sheets, etc., may be provided, and the application is not limited thereto.

In an embodiment, as shown in fig. 4 to 5, the circuit board 42 has a first surface 421 and a second surface 422 opposite to each other, the electronic components 41 are divided into two groups, the height of the first group is greater than 5mm, the height of the second group is less than or equal to 5mm, the first group of electronic components is disposed on the first surface 421, the second group of electronic components is disposed on the second surface 422, and the first surface 421 of the circuit board 42 is disposed opposite to the substrate 31.

The height of the first electronic component 411 is high, the space of the lamp 10 can be better utilized by being arranged right opposite to the substrate 31, the second electronic component 412 is small, and the second surface 422 is connected with the pins of the first electronic component 411 in an installing mode, so that the installing quantity of the electronic components 41 in the circuit board 42 is increased, the size of the driving power supply 40 is reduced, and the installation is more convenient. The electrolytic capacitor 44 is mounted on the first surface 421.

The circuit board 42 has a length direction (e.g., Y direction in fig. 4) and a width direction (e.g., X direction in fig. 4), and a land 45 is provided on a side of the circuit board 42 adjacent to the end cap 20 in the length direction for connection. Specifically, the number of the pads 45 is 2, and the pads are provided along the end in the width direction.

In the present application, in order to make the structure of the driving power source 40 welded to the light bar 30 more compact, the driving power source 40 is completely disposed inside the lamp 10.

In one embodiment, the inner wall of the lamp 10 is coated with a diffusion layer, and is disposed inside the lamp 10 by coating, and the coating generally includes particles, which can make the light emitted from the lamp 10 diffuse more uniformly.

All possible combinations of the technical features of the embodiments described above may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features. Features of different embodiments are shown in the same drawing, which is to be understood as also disclosing combinations of the various embodiments concerned.

The above-mentioned embodiments 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 (9)

1. An LED straight tube lamp, comprising:

   the LED lamp comprises a lamp strip and a plurality of LED lamp beads, wherein the lamp strip comprises a substrate and the plurality of LED lamp beads fixed on the substrate;

   a light-transmissive light tube configured to receive the light bar;

   the end covers are fixed at two ends of the lamp tube;

   the lamp tube comprises a driving power supply, wherein the driving power supply comprises a circuit board and electronic components arranged on the circuit board, at least part of the circuit board extends into the lamp tube, and isolation elements used for avoiding mutual contact are arranged between the electronic components and the lamp strip.
2. 2. The LED straight tube lamp as claimed in claim 1, wherein the electronic components comprise a plurality of electrolytic capacitors, and each electrolytic capacitor is provided with an isolating element.
3. 3. The LED straight lamp according to claim 2, wherein the isolation element is non-conductive and is fixedly connected with an end face of the electrolytic capacitor.
4. 4. The LED straight lamp according to claim 3, wherein the isolation element is white latex.
5. 5. The LED straight-tube lamp as claimed in claim 1, wherein the circuit board has a first surface and a second surface opposite to each other, the electronic components are divided into two groups, the first group is higher than 5mm in height, the second group is not higher than 5mm in height, the first group is arranged on the first surface, and the second group is arranged on the second surface.
6. 6. The LED straight lamp according to claim 5, wherein the first surface of the circuit board is arranged opposite to the substrate.
7. 7. The LED straight lamp according to claim 1, wherein the circuit board has a length direction and a width direction, and a land is provided on a side of the circuit board in the length direction close to the end cap.
8. 8. The straight LED lamp according to claim 1, wherein the driving power supply is completely disposed inside the lamp tube.
9. 9. The LED straight lamp according to claim 1, wherein the inner wall of the lamp tube is coated with a diffusion layer.

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