CN104994684B - A kind of circuit connection structure - Google Patents

Abstract

The invention discloses a circuit connection structure, which comprises hard circuit board units, and the hard circuit board units are electrically connected through flexible circuit boards. The invention enables the circuit board to be folded, bent and twisted, and has better heat dissipation effect.

Description

A circuit connection structure

technical field

The invention relates to the technical field of circuit connection, in particular to a circuit connection structure.

Background technique

In the prior art, the circuit board usually includes an aluminum-based circuit board and a printed circuit board. The aluminum-based circuit board generally consists of a four-layer structure. The bottom layer is an aluminum substrate, and the aluminum substrate is an insulating layer. An insulating protective layer is provided on the circuit layer. The aluminum substrate of the aluminum-based circuit board can conduct away the heat generated by the circuit layer, and has a good heat dissipation effect, but cannot be folded and twisted.

The printed circuit board is usually a flexible circuit board, and its structure from bottom to top is: substrate, adhesive, copper foil, adhesive and protective film. Flexible circuit boards can be folded, bent and twisted, etc., but their heat dissipation effect is poor.

As shown in Fig. 1, the expanded state diagram of a lamp board 10 of a columnar LED light-emitting body disclosed in the prior art, LED chips (not shown in the figure) are arranged on the lamp board 10, and when the LED lamp is produced, the lamp The board 10 is wound on the multi-faceted columnar body, therefore, the lamp board 10 needs to be divided into a plurality of lamp board units 101, and the cut grooves 102 are provided between the lamp board units 101, and the electrical connection between the lamp board units 101 is carried out through the connecting bridge 103. connected, and then the lamp panel unit 101 is bent and wound on the polyhedral column. The disadvantage is that the lamp board units 101 are electrically connected through the connecting bridge 103. When the lamp board unit 101 is bent, the connecting bridge is easy to lift and crack, forming a virtual weld, causing poor contact of the circuit, or even breaking the circuit. The product qualification rate is low.

Contents of the invention

The purpose of the present invention is to provide a circuit connection structure, so that the circuit board can be folded, bent and twisted, and the heat dissipation effect is better.

To achieve the above object, the solution of the present invention is:

A circuit connection structure includes hard circuit board units, and the hard circuit board units are electrically connected through flexible circuit boards.

Further, the rigid circuit board unit is an aluminum-based circuit board.

Further, the aluminum-based circuit board is composed of a four-layer structure, the bottom layer is an aluminum substrate, the aluminum substrate is an insulating layer, a circuit layer is arranged on the insulating layer, and an insulating protection layer is arranged on the circuit layer.

Further, the flexible circuit board is composed of a substrate, an adhesive, a copper foil, an adhesive and a protective film from bottom to top, wherein the copper foil is connected to the circuit layer of the aluminum-based circuit board.

Further, LED chips are arranged on the circuit layer.

Further, the hard circuit board units are elastically connected through metal connecting bridges.

Further, the metal connection bridge is an aluminum substrate.

After adopting the above solution, the rigid circuit board units of the present invention are electrically connected through the flexible circuit board instead of through the metal connection bridge. Therefore, the rigid circuit board units of the present invention can be folded, bent and twisted, thereby improving the connection effect between circuits, avoiding poor contact, and improving product yield. At the same time, the hard circuit board unit is provided with a heat-conducting substrate, which has a better heat dissipation effect.

Description of drawings

Fig. 1 is the structural representation of prior art;

Fig. 2 is a structural representation of the present invention;

Fig. 3 is a schematic diagram of the structure of the present invention applied to an LED lamp panel.

Label description

Light panel 10 Light panel unit 101

Grooving 102

Rigid circuit board unit 1 Flexible circuit board 2

Metal connecting bridge 3 top rigid circuit board unit 4 .

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to FIG. 2 , a circuit connection structure disclosed by the present invention includes hard circuit board units 1 , and the hard circuit board units 1 are electrically connected through a flexible circuit board 2 . The rigid circuit board unit 1 is usually an aluminum-based circuit board.

The hard circuit board units 1 are electrically connected through the flexible circuit board 2 instead of through the metal connection bridge. The hard circuit board unit 1 can be folded, bent and twisted, which is suitable for complex installation of circuit boards; meanwhile, the hard circuit board unit 1 is usually provided with an aluminum substrate, which has a better heat dissipation effect. At the same time, it has good heat dissipation and can be twisted and installed.

The aluminum-based circuit board is composed of a four-layer structure, the bottom layer is an aluminum substrate, the aluminum substrate is an insulating layer, a circuit layer is arranged on the insulating layer, and an insulating protective layer is arranged on the circuit layer.

The flexible circuit board 2 is composed of a substrate, an adhesive, a copper foil, an adhesive and a protective film in sequence from bottom to top, wherein the copper foil is connected to the circuit layer of the aluminum-based circuit board.

As shown in FIG. 3 , when the circuit connection structure of the present invention is applied to an LED light board, LED chips are arranged on the circuit layer of the hard circuit board unit 1 . The hard circuit board units 1 are elastically connected through metal connecting bridges 3, and the metal connecting bridges are aluminum substrates.

When the LED lamp board is wound on the multi-faceted columnar body, the flexible circuit board 2 can be twisted without affecting the electrical connection between the hard circuit board units 1, and the metal connection bridge makes the winding more firm. And corresponding to the top of the multi-faceted columnar body, a top rigid circuit board unit 4 is provided, and the top rigid circuit board unit 4 and other rigid circuit board units 1 are also electrically connected through the flexible circuit board 2, and also through the metal connecting bridge. Make elastic connections.

The circuit connection structure can be applied to the LED lamp board structure, and can also be applied to other circuit boards, such as automobile circuit boards.

The above descriptions are only preferred embodiments of the present invention, and are not limitations on the design of this case. All equivalent changes made according to the key design of this case fall within the scope of protection of this case.

Claims (6)

1. A circuit connection structure, characterized in that: it comprises a hard circuit board unit, the hard circuit board units are electrically connected by a flexible circuit board, and the hard circuit board units are elastically connected by a metal connecting bridge, An LED lamp board is formed, and the LED lamp board is wound on the multi-faceted columnar body. 2. The circuit connection structure according to claim 1, wherein the rigid circuit board unit is an aluminum-based circuit board. 3. A circuit connection structure as claimed in claim 2, characterized in that: the aluminum-based circuit board consists of four layers, the bottom layer is an aluminum substrate, the aluminum substrate is an insulating layer, and a circuit layer is arranged on the insulating layer. An insulation protection layer is arranged on the circuit layer. 4. A circuit connection structure as claimed in claim 3, characterized in that: the flexible circuit board is composed of substrate, adhesive, copper foil, adhesive and protective film from bottom to top, wherein the copper foil is connected to the aluminum-based circuit board circuit layer. 5. The circuit connection structure according to claim 3, characterized in that: LED chips are arranged on the circuit layer. 6. The circuit connection structure according to claim 1, wherein the metal connection bridge is an aluminum substrate.