Safe self-extinguishing LED lamp tube substrate

Abstract

The utility model discloses a safe self-extinguishing LED lamp tube substrate which comprises a substrate body, a plurality of lamp bead bonding pads distributed at intervals are arranged on the substrate body, every two adjacent lamp bead bonding pads are connected through a copper foil, and at least one hollow groove is formed in the copper foil. The hollow grooves are formed in the copper foil, when the lamp beads work abnormally, heat conduction can be reduced through the hollow grooves, and therefore the dangerous situation that the lamp tube is cracked or fused due to continuous overheating is avoided; when the lamp bead works abnormally, the copper foil at the hollow groove is fused under the condition of overheating, so that a circuit is disconnected, safe self-extinguishing is realized, the design cost of driving is reduced, and the cost of the whole lamp is reduced; according to the utility model, the solder mask white oil is covered on the surface of the substrate body except the lamp bead bonding pad and the device bonding pad, so that the effects of light source reflection and solder mask are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of LED lamp substrates, and particularly relates to a safe self-extinguishing LED lamp tube substrate. Background Art

[0002] LED lights have good lighting effects and are energy-saving and environmentally friendly. They are widely used and are used in various environments.

[0003] Currently, LED tubes are basically used on the market to replace traditional fluorescent lamps. During the use of LED tubes, when the lamp beads fail or are about to fail, there is a probability that the lamp beads will overheat, and the heat will be transferred to the tube of the lamp through the substrate and copper foil. Prolonged overheating will cause the tube to crack or melt. The cracked or melted lamp tube has a safety risk of falling and hitting people or objects.

[0004] To address this risk, the current approach is to add a chip with an OVP function to the driver power supply, but this approach results in higher driver costs.

[0005] Therefore, there is an urgent need for a safe self-extinguishing LED lamp substrate with a self-extinguishing function to improve the safety of the LED lamp and reduce the cost of use. Utility Model Content

[0006] The purpose of this utility model is to provide a safe self-extinguishing LED lamp substrate to solve the problems raised in the above background technology. The utility model provides a safe self-extinguishing LED lamp substrate with a self-extinguishing function, which improves the safety of the LED lamp and reduces the cost of use.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a safe self-extinguishing LED lamp tube substrate, comprising a substrate body, on which a plurality of lamp bead pads are provided at intervals, and adjacent lamp bead pads are connected by copper foil, and the copper foil is provided with at least one hollow groove.

[0008] Furthermore, the shape of the hollow groove is U-shaped, T-shaped or π-shaped.

[0009] Furthermore, the copper foil is bonded to the substrate body by glue.

[0010] Furthermore, the substrate body is made of aluminum-based material, glass fiber material or soft-based material.

[0011] In order to solder other electronic components, a plurality of device pads are further provided on the substrate body.

[0012] In order to reflect the light source and resist soldering, further, the surface of the substrate body except for the lamp bead pads and the device pads is covered with white solder resist.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model provides hollow grooves on the copper foil. When the lamp bead works abnormally, the hollow grooves can reduce the conduction of heat, thereby avoiding the dangerous situation of cracking or melting of the lamp tube due to continuous overheating;

[0015] 2. When the lamp bead works abnormally, the copper foil at the hollow groove will melt under overheating, disconnecting the circuit and achieving safe self-extinguishing, thus reducing the design cost of the driver and thus the cost of the entire lamp;

[0016] 3. The surface of the substrate body of the utility model, except for the lamp bead pads and the device pads, is covered with white solder resist, which plays the role of reflecting the light source and resisting soldering. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the copper foil of the utility model;

[0019] In the figure: 1. Substrate body; 2. Copper foil; 21. Hollow groove; 3. Lamp bead pad; 4. White solder resist; 5. Device pad. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1

[0022] See also Figure 1-2 The utility model provides the following technical solutions: a safe self-extinguishing LED lamp tube substrate, including a substrate body 1, the substrate body 1 is made of aluminum-based material, glass fiber material or soft-based material, and a plurality of lamp bead pads 3 are provided on the substrate body 1. Adjacent lamp bead pads 3 are connected by copper foil 2, and the copper foil 2 is glued to the substrate body 1 by glue. A hollow groove 21 is provided on the copper foil 2. The shape of the hollow groove 21 is U-shaped, T-shaped or π-shaped. In this embodiment, U-shaped is preferred.

[0023] By adopting the above technical solution, the utility model provides a hollow groove 21 on the copper foil 2. When the lamp bead malfunctions, the hollow groove 21 can reduce the conduction of heat, thereby avoiding the dangerous situation of cracking or melting of the lamp tube due to continuous overheating; when the lamp bead malfunctions, the copper foil 2 at the hollow groove 21 of the utility model will melt under the condition of overheating, disconnecting the circuit, achieving safe self-extinguishing, reducing the design cost of the drive, and thus reducing the cost of the entire lamp.

[0024] Specifically, a plurality of device pads 5 are further provided on the substrate body 1 .

[0025] By adopting the above technical solution, it can be used for welding other electronic components.

[0026] Example 2

[0027] The difference between this embodiment and the first embodiment is that, specifically, for the lamp bead pads 3 with a larger spacing, two or more hollow grooves 21 can be provided on the copper foil 2 .

[0028] Example 3

[0029] The difference between this embodiment and the first embodiment is that, specifically, the surface of the substrate body 1 other than the lamp bead pads 3 and the device pads 5 is covered with white solder resist 4 .

[0030] By adopting the above technical solution, the light source is reflected and the solder resist is performed.

[0031] To sum up, the utility model provides a hollow groove 21 on the copper foil 2. When the lamp bead malfunctions, the hollow groove 21 can reduce the conduction of heat, thereby avoiding the dangerous situation of cracking or melting of the lamp tube due to continuous overheating; when the lamp bead malfunctions, the copper foil 2 at the hollow groove 21 of the utility model will melt under the condition of overheating, so that the circuit is disconnected, and safe self-extinguishing is achieved, thereby reducing the design cost of the drive, thereby reducing the cost of the entire lamp; on the surface of the substrate body 1 of the utility model, the parts other than the lamp bead pad 3 and the device pad 5 are covered with white solder resist 4, which plays the role of reflecting the light source and resisting soldering.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safe self-extinguishing LED lamp substrate, characterized by: The invention comprises a substrate body, on which a plurality of lamp bead pads are arranged at intervals, and two adjacent lamp bead pads are connected by copper foil, and the copper foil is provided with at least one hollow groove.

2. The safe self-extinguishing LED lamp substrate according to claim 1, characterized in that: The shape of the hollow groove is U-shaped, T-shaped or π-shaped.

3. The safe self-extinguishing LED lamp substrate according to claim 1, characterized in that: The copper foil is bonded to the substrate body by glue.

4. The safe self-extinguishing LED lamp substrate according to claim 1, characterized in that: The substrate body is made of aluminum-based material, glass fiber material or soft-based material.

5. The safe self-extinguishing LED lamp substrate according to claim 1, characterized in that: A plurality of device pads are also provided on the substrate body.

6. The safe self-extinguishing LED lamp substrate according to claim 5, characterized in that: The surface of the substrate body other than the lamp bead pad and the device pad is covered with white solder resist.

Images