CN206708739U - A kind of LED module and LED illumination lamp - Google Patents

Abstract

The utility model discloses an LED module and an LED lighting fixture. The LED module includes an LED circuit board, at least one LED disposed on the LED circuit board, and at least one electrical connector disposed on at least one end of the LED circuit board. The LED circuit board includes: a base layer, which constitutes the base of the LED circuit board; a first insulating layer, arranged on the base layer; a circuit layer, arranged on the first insulating layer; and a second insulating layer and an adhesive layer , the second insulating layer is disposed on the circuit layer through the adhesive layer. The LED and the electrical connector are respectively electrically connected to the circuit layer of the LED circuit board; the electrical connector is configured to be electrically connected to a power supply and input power from the power supply to the circuit layer to drive the LED to emit light. The LED module described in the utility model can be used in a lamp with a non-isolated power supply without additional protective structures, and it is safe for users to touch the outermost layer without risk of electric shock and meets the requirements of safety regulations.

Description

LED module and LED lighting fixture

technical field

The utility model relates to the lighting field, in particular to an LED module and an LED lighting fixture.

Background technique

There are non-isolated power supply and isolated power supply in LED (light emitting diode, light emitting diode) lamps. In a non-isolated power supply, the load terminal is directly connected to the input terminal, and there is a risk of electric shock when touching the load. In an isolated power supply, a transformer is installed between the load terminal and the input terminal to isolate the load terminal from the input terminal, and there is no danger of electric shock when touching the load. However, the lamps with isolated power supply are limited in cost and installation space due to the need for a transformer. With the increasingly fierce competition in the cost of lighting fixtures, more and more cost-effective non-isolated power supply lighting fixtures are being used. However, due to the structure of the non-isolated power supply, its output terminals are all live parts, and people cannot directly touch them, otherwise there is a risk of electric shock. All LED modules with non-isolated power supplies must add additional protective structures to prevent any live parts from being exposed. However, the white oil layer in the LED circuit board itself cannot meet the safety requirements of isolated and non-isolated power supplies, and the white oil layer is easily scratched by sharp objects to expose the conductive copper foil, so it cannot play the role of insulation. If it is necessary to add additional protection against electric shock, it will not only increase the overall cost, but also make the assembly more complicated.

Contents of the invention

The purpose of this utility model is to solve the above problems or at least partly solve the above problems, to provide an LED module and LED lighting fixture, which can be used in the case of non-isolated power supply, which has the function of isolation itself, and does not need to add an extra protective structure externally, and the structure Simple.

To achieve the above purpose, the technical solution adopted by the present invention is to provide an LED module, including: an LED circuit board, at least one LED disposed on the LED circuit board, and at least one electrical connector disposed on at least one end of the LED circuit board. The LED circuit board includes: a base layer, which constitutes the base of the LED circuit board; a first insulating layer, arranged on the base layer; a circuit layer, arranged on the first insulating layer; and a second insulating layer and an adhesive layer , the second insulating layer is disposed on the circuit layer through the adhesive layer. The LED and the electrical connector are respectively electrically connected to the circuit layer of the LED circuit board. The electrical connector is configured to be electrically connected to the power supply and input the power of the power supply to the circuit layer to drive the LED to emit light.

Preferably, the at least one electrical connector includes a body and conductive terminals configured to electrically connect the circuit layer with a power source.

Preferably, the at least one electrical connector is disposed on the second insulating layer and configured to be electrically connected to the circuit layer.

Preferably, the second insulating layer has opposite first and second sides, the first side is provided with a white oil layer, and the adhesive layer is provided on the second side of the second insulating layer.

Preferably, the second insulating layer and the white oil layer are provided with gaps suitable for the LEDs corresponding to the positions of the LEDs, and part of the LEDs is electrically connected to the circuit layer through the gaps.

Preferably, the at least one electrical connector is disposed on the white oil layer and configured to be electrically connected to the circuit layer.

Preferably, a lens is also included, and the lens is arranged outside the LED and fixedly connected with the LED circuit board.

Preferably, the power supply is a non-isolated power supply.

Preferably, the base layer is a bakelite layer or a glass cloth layer or a tissue paper layer or a metal layer or a ceramic layer.

Preferably, the LED circuit board is an aluminum substrate, and the base layer is a metal layer of aluminum alloy.

Preferably, the second insulating layer is a polyimide film.

Preferably, the adhesive layer is disposed on the second side of the second insulating layer corresponding to the first side, the adhesive layer is located between the circuit layer and the second insulating layer, and is configured as The circuit layer and the second insulating layer are connected.

Preferably, the adhesive layer is an epoxy resin adhesive layer.

Preferably, the LED circuit board is in the shape of a strip or a ring or a polygon, and several LEDs are arranged at intervals.

Preferably, it also includes a plurality of lenses, which are set in one-to-one correspondence with the LEDs.

Preferably, a lens is also included, and the lens integrally covers the LED circuit board and accommodates the LED therein for light distribution.

Preferably, the lens is fixedly combined with the LED circuit board.

In order to achieve the above purpose, the technical solution adopted by the utility model is to provide a lighting fixture, which includes an LED module and a power supply for supplying power to the LED module. The LED module includes a rigid LED circuit board, at least one LED arranged on the LED circuit board, and at least one electrical connector electrically connected to the LED circuit board and the power supply. The rigid LED circuit board includes: a base layer constituting the base of the LED circuit board; a first insulating layer disposed on the base layer; a circuit layer disposed on the first insulating layer and electrically connected to the power supply and a second insulating layer and an adhesive layer, the second insulating layer is arranged on the circuit layer through the adhesive layer; the LED is electrically connected to the circuit layer of the LED circuit board and is formed by the The electrical connector receives power from the power source.

Preferably, the at least one electrical connector includes a body and conductive terminals configured to electrically connect the circuit layer with a power source.

Preferably, the at least one electrical connector is disposed on the second insulating layer and configured to be electrically connected to the circuit layer.

Preferably, the second insulating layer has opposite first and second sides, the first side is provided with a white oil layer, and the adhesive layer is provided on the second side of the second insulating layer.

Preferably, the second insulating layer and the white oil layer are provided with gaps suitable for the LEDs corresponding to the positions of the LEDs, and part of the LEDs is electrically connected to the circuit layer through the gaps.

Preferably, the at least one electrical connector is disposed on the white oil layer and configured to be electrically connected to the circuit layer.

Preferably, it further includes: a lens, the lens is arranged outside the LED and is fixedly connected with the LED circuit board.

Preferably, the power supply is a non-isolated power supply.

Preferably, the base layer is a bakelite layer or a glass cloth layer or a tissue paper layer or a metal layer or a ceramic layer.

Preferably, the LED circuit board is an aluminum substrate, and the base layer is a metal layer of aluminum alloy.

Preferably, the second insulating layer is a polyimide film.

Preferably, the adhesive layer is disposed on the second side of the second insulating layer corresponding to the first side, the adhesive layer is located between the circuit layer and the second insulating layer, and is configured as The circuit layer and the second insulating layer are connected.

Preferably, the adhesive layer is an epoxy resin adhesive layer.

Preferably, the LED circuit board is in the shape of a strip or a ring or a polygon, and several LEDs are arranged at intervals.

Preferably, it also includes a plurality of lenses, which are set in one-to-one correspondence with the LEDs.

Preferably, a lens is also included, and the lens integrally covers the LED circuit board and accommodates the LED therein for light distribution.

Preferably, the lens is fixedly combined with the LED circuit board.

Compared with the prior art, the beneficial effects of the technical solution described in the utility model are:

1. The LED modules and LED lamps provided by the utility model can be used in the case of non-isolated power supply, and meet the insulation effect required in the safety regulations of lamps with non-isolated power supply.

2. The LED module and the LED lamp provided by the utility model provide an electrical connector to realize reliable electrical connection between the LED module and the power supply.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the utility model and constitute a part of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation of the utility model . In the attached picture:

Fig. 1 is the three-dimensional view of LED module in the utility model;

Fig. 2 is the sectional view of A-A place of Fig. 1;

Fig. 3 is the sectional view of the B-B place of Fig. 1;

Fig. 4 is an exploded view at B-B of Fig. 1 .

Among them, 10. Aluminum substrate, 11. Metal layer, 12. First insulating layer, 13. Circuit layer, 14. White oil layer, 15. Second insulating layer, 16. Adhesive layer, 17. Notch, 20. LED, 30. LED lens, 40. Electrical connector.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with specific embodiments of the utility model and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

A kind of LED circuit board described in the utility model comprises:

The base layer, which constitutes the matrix of the LED circuit board;

a first insulating layer disposed on the base layer;

a circuit layer disposed on the first insulating layer;

It also includes: a second insulating layer disposed on the circuit layer.

A white oil layer is provided on the first side of the second insulating layer, and the white oil layer constitutes the outermost layer of the LED circuit board.

Wherein, the circuit layer is electrically connected to the power source to provide light emitting energy for the LED. The base layer constitutes the matrix of the LED circuit board, and the base layer also has the function of heat dissipation. The first insulating layer is arranged between the base layer and the circuit layer, electrically isolates the circuit layer from the base layer, and transfers the heat of the circuit layer to the base layer, and dissipates heat through the base layer . The white oil layer constitutes the outermost layer of the LED circuit board, and is used for printing information such as the position, type, model, and name of the mounted components on the LED circuit board. The second insulating layer is arranged between the circuit layer and the white oil layer, and electrically isolates the circuit layer from the white oil layer, so that it is safe for users to touch the outermost white oil layer without getting an electric shock Dangerous, in line with the requirements of safety regulations. Even if the white oil layer encounters scratches, the second insulating layer is exposed, and the second insulating layer has a certain thickness and hardness, which greatly reduces the probability of exposing the circuit layer and improves the safety level and protection level.

In the utility model, the second insulating layer is a polyimide film, which is evenly pasted on the surface of the circuit layer to achieve the effect of insulation. The preferred thickness of the second insulating layer is 0.3-1.3mil (mil).

In the LED circuit board, an adhesive layer is provided on the second side of the second insulating layer corresponding to the first side, and the adhesive layer is located between the circuit layer and the second insulating layer , configured to connect the circuit layer and the second insulating layer. The adhesive layer is an epoxy resin adhesive layer.

The base layer described in the utility model is a bakelite layer or a glass cloth layer or a tissue paper layer or a metal layer or a ceramic layer.

The LED circuit board in the utility model can be linear or circular or shaped.

The LED module described in the utility model includes the LED circuit board and LEDs. The LED is electrically connected to the circuit layer of the LED circuit board. The position of the white oil layer and the second insulating layer is corresponding to the position of the LED, and a gap suitable for the LED is provided, and a part of the LED is electrically connected to the circuit layer through the gap. The LED module described above can be used in lamps with non-isolated power supply without adding additional protective structures. It is safe for users to touch the outermost white oil layer without risk of electric shock and meets the requirements of safety regulations.

The LED module further includes: an LED lens arranged outside the LED and fixedly connected to the LED circuit board. The cooperation between the LED lens and the LED can enhance light use efficiency and luminous efficiency. The LED lens may be a separate lens corresponding to the LEDs one by one, and be covered outside the LEDs, or it may be a whole lens, and be covered outside all the LEDs.

The LED module further includes: an electrical connector disposed at one end of the LED circuit board and configured to connect the circuit layer with a power supply. After the electrical connector electrically connects the circuit layer to the power supply, the LED electrically connected to the circuit layer is connected to the power supply to realize light emission.

As shown in Figures 1 to 4, the LED circuit board described in this embodiment is an aluminum substrate 10, including:

The metal layer 11 constitutes the base of the aluminum substrate 10;

a first insulating layer 12, disposed on the metal layer 11;

a circuit layer 13 disposed on the first insulating layer 12;

The second insulating layer 15 is disposed on the circuit layer 13;

The white oil layer 14 is disposed on the second insulating layer and constitutes the outermost layer of the aluminum substrate 10 .

That is, the metal layer 11 , the first insulating layer 12 , the circuit layer 13 , the second insulating layer 15 and the white oil layer 14 are sequentially arranged to form the aluminum substrate 10 .

Wherein, the circuit layer 13 is electrically connected to a power source to provide light emitting energy for the LED. The metal layer 11 constitutes the base of the aluminum substrate 10 , and the metal layer 11 also has the function of heat dissipation. The first insulating layer 12 is disposed between the metal layer 11 and the circuit layer 13, electrically isolates the circuit layer 13 from the metal layer 11, and transfers heat from the circuit layer 13 to the circuit layer 13. The metal layer 11 is used to dissipate heat through the metal layer 11 . The white oil layer 14 constitutes the outermost layer of the aluminum substrate 10 and is used for printing information such as positions, types, models, and names of components mounted on the aluminum substrate 10 . The second insulating layer 15 is arranged between the circuit layer 13 and the white oil layer 14 to electrically isolate the circuit layer 13 from the white oil layer 14. When the user touches the outermost white oil layer 14 Safe, there will be no risk of electric shock, and meet the requirements of safety regulations.

The aluminum substrate 10 also includes an adhesive layer 16, the adhesive layer 16 is attached to the second insulating layer 15, is located between the circuit layer 13 and the second insulating layer 15, and is configured to connect the circuit layer 13 and the second insulating layer 15 . The adhesive layer 16 is an epoxy resin adhesive layer.

The adhesive layer 16 is pre-set on the second insulating layer 15, and the adhesive layer 16 is provided with a release paper or a release film, and the adhesive layer 16 is used after the release paper or release film is torn off. Bonded to circuit layer 13.

In this embodiment, the second insulating layer 15 is a polyimide film. The polyimide film is evenly pasted on the surface of the circuit layer through the epoxy resin adhesive to achieve the effect of insulation.

The aluminum substrate 10 can be used in lamps with non-isolated power supply to play the role of isolation and protection, meeting the insulation effect required in the safety regulations of lamps with non-isolated power supply, and the structure is simple, only a second insulating layer 15 is added to achieve insulation effect without additional protective structures. Small footprint and low cost.

The LED module in this embodiment includes an LED 20 and the aluminum substrate 10 , and the LED 20 is electrically connected to the circuit layer 13 of the aluminum substrate 10 . A plurality of LEDs 20 are arranged on the aluminum substrate 10 , and the plurality of LEDs 20 are respectively electrically connected to a power source through the circuit layer 13 on the aluminum substrate 10 to emit light.

Wherein, as shown in Fig. 3 and Fig. 4, the positions of the white oil layer 14 and the second insulating layer 15 corresponding to the LED 20 are adapted to the gap 17 of the LED 20, and the part of the LED 20 passes through the The gap 17 is electrically connected with the circuit layer 13 . Both sides of the LED 20 have electrical polarities (positive and negative), and the pads of the positive and negative electrodes of the LED 20 are connected to the circuit layer 13 by soldering tin.

The LED module described in the present invention further includes an LED lens 30 , the LED lens 30 is arranged outside the LED 20 and connected to the aluminum substrate 10 . The cooperation between the LED lens 30 and the LED 20 can enhance the light use efficiency and luminous efficiency, and different LED lenses 30 can be used to change the optical system of the light field distribution of the LED 20 according to different effects.

The LED module described in the utility model also includes an electrical connector 40, the electrical connector 40 includes a body and a conductive terminal, the electrical connector 40 is arranged at one end of the aluminum substrate 10, the structure is simple and the crimping cover is saved , configured to electrically connect the circuit layer 13 with a power source. After the electrical connector 40 electrically connects the circuit layer 13 to the power supply, the LED 20 electrically connected to the circuit layer 13 is connected to the power supply to realize light emission.

After the circuit layer 13 is connected to the power supply through the electrical connector 40, the LED 20 is turned on and emits light. The first insulating layer 12 electrically isolates the circuit layer 13 from the metal layer 11, and The heat of the circuit layer 13 is transferred to the metal layer 11 and dissipated through the metal layer 11 . The second insulating layer 15 electrically isolates the circuit layer 13 from the white oil layer 14, and it is safe for users to touch the outermost white oil layer 14 without risk of electric shock, which meets the requirements of safety regulations.

The LED module described above can be used in lamps with non-isolated power supply without adding additional protective structures. It is safe for users to touch the outermost white oil layer without risk of electric shock and meets the requirements of safety regulations.

The specific examples described above have further described the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above descriptions are only specific embodiments of the utility model and are not intended to limit the utility model. For new models, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims (34)

1. An LED module, comprising an LED circuit board, at least one LED disposed on the LED circuit board and at least one electrical connector disposed on at least one end of the LED circuit board, the LED circuit board comprising: The base layer, which constitutes the matrix of the LED circuit board; a first insulating layer disposed on the base layer; a circuit layer disposed on the first insulating layer; and a second insulating layer and an adhesive layer, the second insulating layer is disposed on the circuit layer through the adhesive layer; The LED and the electrical connector are respectively electrically connected to the circuit layer of the LED circuit board; The electrical connector is configured to be electrically connected to the power supply and input the power of the power supply to the circuit layer to drive the LED to emit light. 2. The LED module according to claim 1, wherein the at least one electrical connector comprises a body and a conductive terminal configured to electrically connect the circuit layer with a power source. 3. The LED module according to claim 1, wherein the at least one electrical connector is disposed on the second insulating layer and configured to be electrically connected to the circuit layer. 4. The LED module according to claim 1, wherein the second insulating layer has opposite first and second sides, the first side is provided with a white oil layer, and the adhesive layer is provided with on the second side of the second insulating layer. 5. The LED module according to claim 4, characterized in that: the second insulating layer and the white oil layer correspond to the position of the LED to set a gap suitable for the LED, and the part of the LED passes through the LED. The gap is electrically connected with the circuit layer. 6. The LED module according to claim 4, wherein the at least one electrical connector is disposed on the white oil layer and configured to be electrically connected to the circuit layer. 7. The LED module according to claim 1, further comprising: A lens, the lens is arranged outside the LED and fixedly connected with the LED circuit board. 8. The LED module according to claim 1, wherein the power supply is a non-isolated power supply. 9. The LED module according to claim 1, wherein the base layer is a bakelite layer or a glass cloth layer or a tissue paper layer or a metal layer or a ceramic layer. 10. The LED module according to claim 9, wherein the LED circuit board is an aluminum substrate, and the base layer is a metal layer of aluminum alloy. 11. The LED module according to claim 1, wherein the second insulating layer is a polyimide film. 12. The LED module according to claim 4, characterized in that, The adhesive layer is disposed on the second side of the second insulating layer corresponding to the first side, the adhesive layer is located between the circuit layer and the second insulating layer, and is configured to connect the circuit layer and the second insulating layer. 13. The LED module according to claim 1, wherein the adhesive layer is an epoxy resin adhesive layer. 14. The LED module according to claim 1, wherein the LED circuit board is long, circular or polygonal, and several LEDs are arranged at intervals. 15. The LED module according to claim 14, characterized in that it further comprises a plurality of lenses, which are provided in a one-to-one correspondence with the LEDs. 16 . The LED module according to claim 14 , further comprising a lens, the lens integrally covering the LED circuit board, and accommodating the LED therein for light distribution. 17. The LED module according to any one of claims 15 or 16, wherein the lens is fixedly combined with the LED circuit board. 18. A lighting fixture, comprising an LED module and a power supply for supplying power to the LED module; The LED module includes a rigid LED circuit board, at least one LED disposed on the LED circuit board, and at least one electrical connector electrically connected to the LED circuit board and a power supply, and the rigid LED circuit board includes: The base layer, which constitutes the matrix of the LED circuit board; a first insulating layer disposed on the base layer; a circuit layer, disposed on the first insulating layer and electrically connected to the power supply; and a second insulating layer and an adhesive layer, the second insulating layer is disposed on the circuit layer through the adhesive layer; The LED is electrically connected to the circuit layer of the LED circuit board and receives power from the power supply through the electrical connector. 19. The lighting fixture according to claim 18, wherein the at least one electrical connector comprises a body and a conductive terminal configured to electrically connect the circuit layer with a power source. 20. The lighting fixture according to claim 18, wherein the at least one electrical connector is disposed on the second insulating layer and configured to be electrically connected to the circuit layer. 21. The lighting fixture according to claim 18, wherein the second insulating layer has opposite first and second sides, the first side is provided with a white oil layer, and the adhesive layer is provided on the second side of the second insulating layer. 22. The lighting fixture according to claim 21, characterized in that: the position of the second insulating layer and the white oil layer corresponding to the position of the LED is provided with a gap suitable for the LED, and the part of the LED passes through the gap electrically connected to the circuit layer. 23. The lighting fixture according to claim 21, wherein the at least one electrical connector is disposed on the white oil layer and configured to be electrically connected to the circuit layer. 24. The lighting fixture of claim 18, further comprising: A lens, the lens is arranged outside the LED and fixedly connected with the LED circuit board. 25. The lighting fixture according to claim 18, wherein the power supply is a non-isolated power supply. 26. The lighting fixture according to claim 18, wherein the base layer is a Bakelite layer or a glass cloth layer or a tissue paper layer or a metal layer or a ceramic layer. 27. The lighting fixture according to claim 26, wherein the LED circuit board is an aluminum substrate, and the base layer is a metal layer of aluminum alloy. 28. The lighting fixture according to claim 18, wherein the second insulating layer is a polyimide film. 29. The lighting fixture of claim 21, wherein: The adhesive layer is disposed on the second side of the second insulating layer corresponding to the first side, the adhesive layer is located between the circuit layer and the second insulating layer, and is configured to connect the circuit layer and the second insulating layer. 30. The lighting fixture according to claim 18, wherein the adhesive layer is an epoxy resin adhesive layer. 31. The lighting fixture according to claim 18, wherein the LED circuit board is in the shape of a strip, a ring or a polygon, and a plurality of LEDs are arranged at intervals. 32. The lighting fixture according to claim 31, further comprising a plurality of lenses, which are provided in one-to-one correspondence with the LEDs. 33. The lighting fixture according to claim 31, further comprising a lens, the lens integrally covering the LED circuit board, and accommodating the LED therein for light distribution. 34. The lighting fixture according to any one of claims 32 or 33, wherein the lens is fixedly combined with the LED circuit board.