TWI425166B - Led light bar and led light bar assembly - Google Patents

Description

Light-emitting diode light bar and light-emitting diode light bar assembly

The invention relates to a light-emitting diode, in particular to a light-emitting diode light bar and a light-emitting diode light bar assembly.

A Light Emitting Diode (LED) is a semiconductor component that converts current into light of a specific wavelength range. The light-emitting diode is widely used in the field of illumination because of its high brightness, low operating voltage, low power consumption, easy matching with integrated circuits, simple driving, and long life.

The light-emitting diode light bar is a light-emitting device in which the light-emitting diodes are linearly arranged, and the application thereof is gradually expanded due to ease of manufacture and low cost. However, in some applications, people often need large size light sources.

In view of the above, it is necessary to provide a light-emitting diode light bar and a light-emitting diode light bar assembly which are easy to form a large-sized light source.

A light-emitting diode light bar includes a circuit board and a plurality of light-emitting diodes attached to the circuit board. The circuit board has opposite sides, and one of the opposite sides of the circuit board has at least one protrusion on one side and a corresponding at least one groove on the other side. The circuit board is provided with electrical connection points at the at least one protrusion and at least one recess. The circuit board has a first electrode line and a second electrode line, and an electrical connection point at the protrusion is electrically connected to the first electrode line, and an electrical connection point at the groove and the first The two electrode wires are electrically connected. One of the first electrode line and the second electrode line is a positive electrode line, and one is a negative electrode line.

A light emitting diode light bar assembly comprising at least two light emitting diode light strips. Each of the LED strips includes a circuit board and a plurality of light emitting diodes attached to the circuit board. The circuit board has opposite sides, and one of the opposite sides of the circuit board has at least one protrusion on one side and a corresponding at least one groove on the other side. The circuit board is provided with electrical connection points at the at least one protrusion and at least one recess. The circuit board has a first electrode line and a second electrode line, and an electrical connection point at the protrusion is electrically connected to the first electrode line, and an electrical connection point at the groove and the first The two electrode wires are electrically connected. One of the first electrode line and the second electrode line is a positive electrode line, and one is a negative electrode line.

The edge of the light-emitting diode light bar has a protrusion and a groove to facilitate a fixed connection between the plurality of light-emitting diode strips, thereby forming a large-sized light source. In addition, since the protrusions and the recesses of the light-emitting diode strip are formed with electrical connection points, when the protrusion or groove of one LED strip is opposite to the recess of the other LED strip When the slots or protrusions are mated, the electrical connection of the two LED strips can be realized. Therefore, it is avoided that the connecting wires are too complicated when forming a large-sized light source.

The invention will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 1 and FIG. 2 , a light-emitting diode light bar assembly 100 according to an embodiment of the present invention includes a plurality of light-emitting diode light strips 10 . In the embodiment, the LED strip assembly 100 includes four LED strips 10 . It can be understood that in other embodiments, the number of the LED strips 10 in the LED strip assembly 100 can also be two, three, five, etc., and the specific number can be as needed. Depending on the size of the light source.

Each of the LED strips 10 includes a circuit board 11 and a plurality of LEDs 12 attached to the circuit board 11.

The circuit board 11 is elongated and includes opposite first long sides 111 and second long sides 112, and opposite first short sides 113 and second short sides 114. In this embodiment, the first long side 111 has two first protrusions 111a, and the second long side 112 has two positions on the opposite sides of the two first protrusions 111a. A groove 112a. The first protrusion 111a is equivalent in size to the first groove 112a, so that the first protrusion 111a of one circuit board 11 can be inserted into the first groove 112a of the other circuit board 11, and the two circuit boards 11 are realized. The mutual fixation between each other. The first short side 113 has a second protrusion 113a, and the second short side 114 is formed with a second groove 114a at a position facing the second protrusion 113a. The second protrusion 113a is equivalent in size to the second groove 114a, so that the second protrusion 113a of one circuit board 11 can be inserted into the second groove 114a of the other circuit board 11, and two circuit boards are realized. 11 is fixed to each other. It can be understood that the number of the first protrusions 111a, the first grooves 112a, the second protrusions 113a, and the second grooves 114a on the circuit board 11 is not limited to the embodiment. In other embodiments, the number of the first protrusions 111a and the first grooves 112a may also be one, three, four, etc., and the number of the second protrusions 113a and the second grooves 114a is also It can be two, three, four, and so on.

Referring to FIG. 3 further, the circuit board 11 includes a bottom layer 115, a circuit layer 116, and a top layer 117. The circuit layer 116 is located between the bottom layer 115 and the top layer 117.

The circuit layer 116 has a plurality of pairs of electrodes 116a corresponding to the plurality of light emitting diodes 12, and each pair of electrodes 116a includes a positive electrode and a negative electrode for electrically connecting to one of the light emitting diodes 12. The circuit layer 116 further has a first electrode line 116b and a second electrode line 116c. The plurality of pairs of electrodes 116a may be connected in series or in parallel between the first electrode line 116b and the second electrode line 116c. In this embodiment, the circuit layer 116 has electrical connection points at the first protrusion 111a, the first groove 112a, the second protrusion 113a, and the second groove 114a, and the circuit layer 116 is at the first protrusion. The electrical connection points at 111a and the second protrusion 113a are electrically connected to the first electrode line 116b, and the circuit layer 116 is electrically connected to the second electrode line 116c at the electrical connection points of the first groove 112a and the second groove 114a. . When the first projection 111a of one circuit board 11 is inserted into the first recess 112a of the other circuit board 11, the electrical connection between the two circuit boards 11 can be achieved. Similarly, when the second projection 113a of one circuit board 11 is inserted into the second recess 114a of the other circuit board 11, the electrical connection between the corresponding two circuit boards 11 can also be achieved. One of the first electrode line 116b and the second electrode line 116c is a positive electrode line and the other is a negative electrode line.

It can be understood that the electrical connection relationship between the electrical connection points and the first electrode line 116b and the second electrode line 116c is not limited to the embodiment. For example, in some embodiments, the circuit layer 116 is at the first protrusion 111a. The electrical connection points at the second recess 114a are electrically connected to the first electrode line 116b, and the electrical connection points of the circuit layer 116 at the first recess 112a and the second protrusion 113a are electrically connected to the second electrode line 116c. . In addition, only one of the two first protrusions 111a may be provided with an electrical connection point.

The bottom layer 115 and the top layer 117 are made of an insulating material for protecting the circuit layer 116. A plurality of openings 117a are defined in the top layer 117 to electrically connect the LEDs 12 to the circuit layer 116. Preferably, the bottom layer 115 and the top layer 117 are made of a material having a relatively good thermal conductivity so that the heat generated by the circuit layer 116 can be dissipated in time.

The edge of the LED strip provided by the embodiment of the invention has protrusions and grooves, thereby facilitating a fixed connection between the plurality of LED strips, thereby forming a large-sized light source. In addition, since the protrusions and the recesses of the light-emitting diode strip are formed with electrical connection points, when the protrusion or groove of one LED strip is opposite to the recess of the other LED strip When the slots or protrusions are mated, the electrical connection of the two LED strips can be realized. Therefore, it is avoided that the connecting wires are too complicated when forming a large-sized light source.

In addition, those skilled in the art can make other changes in the spirit of the present invention. Of course, the changes made in accordance with the spirit of the present invention should be included in the scope of the present invention.

100‧‧‧Lighting diode light bar assembly

10‧‧‧Lighting diode strip

11‧‧‧ boards

12‧‧‧Lighting diode

111‧‧‧First long side

111a‧‧‧First bulge

112‧‧‧Second long side

112a‧‧‧first groove

113‧‧‧First short side

113a‧‧‧second bulge

114‧‧‧second short side

114a‧‧‧second groove

115‧‧‧ bottom layer

116‧‧‧ circuit layer

116a‧‧‧electrode

116b‧‧‧First electrode line

116c‧‧‧Second electrode line

117‧‧‧ top

117a‧‧‧ openings

FIG. 1 is an exploded perspective view of a light emitting diode light bar assembly according to an embodiment of the present invention.

2 is a schematic view of the LED light bar assembly of FIG. 1 assembled.

3 is an exploded perspective view of a light-emitting diode light bar in the light-emitting diode light bar assembly of FIG. 1.

10‧‧‧Lighting diode strip

12‧‧‧Lighting diode

115‧‧‧ bottom layer

116‧‧‧ circuit layer

116a‧‧‧electrode

116b‧‧‧First electrode line

116c‧‧‧Second electrode line

117‧‧‧ top

117a‧‧‧ openings

Claims (10)

A light-emitting diode light bar comprising a circuit board and a plurality of light-emitting diodes attached to the circuit board, the circuit board having opposite sides, wherein the improvement is that the two sides of the circuit board are opposite Having at least one protrusion on one side and at least one groove on the other side, the circuit board being provided with electrical connection points at the at least one protrusion and at least one groove, on the circuit board Having a first electrode line and a second electrode line, the electrical connection point at the protrusion is electrically connected to the first electrode line, and the electrical connection point at the groove is electrically connected to the second electrode line One of the first electrode line and the second electrode line is a positive electrode line, and one is a negative electrode line. The light-emitting diode light bar of claim 1, wherein each of the protrusions is disposed opposite to its corresponding groove. The light-emitting diode light bar of claim 1, wherein each of the protrusions has a size corresponding to a corresponding groove. The light-emitting diode light bar of claim 1, wherein the circuit board comprises a bottom layer, a circuit layer and a top layer, the circuit layer being located between the bottom layer and the top layer, the protrusions and the grooves The electrical connection point is located on the circuit layer. The light-emitting diode light bar of claim 1, wherein: one of the opposite sides of the circuit board has a plurality of protrusions on one side and a corresponding plurality of grooves on the other side. A portion of the plurality of protrusions has electrical connection points, and some of the plurality of grooves have electrical connection points. The light-emitting diode light bar of any one of the preceding claims, wherein: the circuit board is elongated, including opposite first long sides and second long sides, and The first short side and the second short side have the at least one protrusion on the first long side and the at least one groove on the second long side. The light-emitting diode light bar of claim 6, wherein: the first short side has at least one protrusion, and the second short side has at least one groove, and the circuit board is An electrical connection point is disposed on the protrusion on the first short side, and the circuit board is provided with an electrical connection point at the groove of the second short side, and the electricity at the protrusion on the first short side The connection point is electrically connected to the first electrode line, and the electrical connection point at the groove of the second short side is electrically connected to the second electrode line. A light-emitting diode light bar assembly, comprising: at least two light-emitting diode light bars according to any one of claims 1 to 5, the at least two light-emitting diode light bars The bumps and the grooves are connected together. The light-emitting diode light bar assembly of claim 8, wherein: the circuit board of each of the light-emitting diode light strips is elongated, and the circuit board includes opposite first long sides and a first And a second long side, and an opposite first short side and a second short side, wherein the first long side has the at least one protrusion, and the second long side has the at least one groove. The light-emitting diode light bar assembly of claim 9, wherein: the first short side has at least one protrusion, and the second short side has at least one groove, the circuit board An electrical connection point is disposed on the protrusion on the first short side, and the circuit board is provided with an electrical connection point at the groove of the second short side, where the protrusion on the first short side The electrical connection point is electrically connected to the first electrode line, and the electrical connection point at the groove of the second short side is electrically connected to the second electrode line.