TWI441583B - A flexible light bar structure - Google Patents

Description

Light strip elastic pad structure

The invention relates to a light bar, in particular to a light bar elastic pad structure.

Referring to FIG. 1 and FIG. 2, a conventional light bar pad structure 1 includes a plurality of light-emitting elements 11 and a circuit board 12 for soldering the light-emitting elements 11, and the circuit board 12 has a plurality of corresponding correspondences. The soldering area 121 of the light-emitting element 11 and the electronic product using the light-emitting element 11 as a light source are increasingly popular. For example, the liquid crystal display also uses the light-emitting element 11 as a backlight source, and since the light-emitting elements 11 generate a large amount of heat during operation, Therefore, the circuit board 12 needs to withstand a relatively high temperature, thereby deriving deformation and deflection. When the deformation and flexing of the circuit board 11 is too serious, the light-emitting elements 11 will be deformed by being squeezed. The weld may break or fall off, which will seriously affect the performance of the light bar pad structure 1.

Therefore, a light bar pad structure 1 which can ensure the use efficiency is one of the research and development targets of current related companies.

Accordingly, it is an object of the present invention to provide a light strip elastic pad structure that ensures the effectiveness of use.

Therefore, the light strip elastic pad structure of the present invention comprises a flexible circuit board and a plurality of light emitting elements, the flexible circuit board comprising a plate body, a plurality of deformation slits penetrating the plate body, and the plurality of deformation joints respectively defined by the deformation joints The soldering area and the plurality of connecting portions respectively connecting the soldering regions and the board body are soldered to the circuit board and soldered to the soldering regions.

The effect of the present invention is that, by soldering the light-emitting elements to the soldering regions, when the flexible circuit board is bent due to the thermal energy generated by the operation of the light-emitting elements, the deformation provided by the deformation joints The space can reduce the external force generated by the deflection of the light-emitting elements, and can also prevent the flexible circuit board from being pressed by the light-emitting element due to deformation, resulting in deformation of the light-emitting element or peeling or falling off of the light-emitting element.

The above and other technical features, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.

Before the present invention is described in detail, it is noted that in the following description, the same elements are denoted by the same reference numerals.

Referring to Figures 3 and 4, a first preferred embodiment of the strip elastic pad structure 2 of the present invention comprises a plurality of light-emitting elements 21, and a flexible circuit board 22, which in the first preferred embodiment 21 uses a light-emitting diode.

The flexible circuit board 22 includes a board body 221, a plurality of deformation slots 222 extending through the board body 221, a plurality of soldering regions 223 respectively defined by the deformation slots 222, and a plurality of soldering regions 223 and the board respectively connected to the board The connecting portion 224 of the body 221.

The light-emitting elements 21 are soldered to the flexible circuit board 2 and soldered to the solder pads 23, which are light-emitting chips or light-emitting diodes.

Further, in the first preferred embodiment, the welding The connecting area 223 has a rectangular shape corresponding to the light-emitting elements 21, and each of the soldering areas 223 is correspondingly soldered with a light-emitting element 21, and one side of each of the soldering regions 223 is a corresponding connecting portion 224, and the remaining three sides are correspondingly deformed. Sew 222.

When the light-emitting elements 21 are operated to generate a large amount of thermal energy, such that the flexible circuit board 22 is deformed by deformation due to heat, the deformation space between the welding zone 223 and the plate body 221 is provided through the deformation slits 222. The bonding portion 224 and the plate body 221 are connected through the connecting portion 224, and the bonding portions 223 are welded and fixed to the light-emitting element 21, thereby reducing the external force generated by the deflection of the light-emitting elements 21, effectively The phenomenon that the light-emitting elements 21 are peeled off or peeled off is avoided.

Referring to FIG. 5 and FIG. 6 and FIG. 7, the second preferred embodiment of the light strip elastic pad structure 3 of the present invention is substantially the same as the first preferred embodiment member and the assembly method, and the difference lies in the second preferred embodiment. In the example, each of the light-emitting elements 31 corresponds to a plurality of pads 323.

Further, in the second preferred embodiment, the electrical pins of each of the light-emitting elements 31 respectively correspond to a soldering region 323, and each of the connecting portions 324 is disposed on a side of the corresponding soldering region 323, further It is noted that each connecting portion 324 is disposed adjacent to the geometric center of the light-emitting element 31 on the side of the corresponding soldering region 323. In addition, the flexible circuit board 32 further includes a deformation defined by the deformation slits 322, and corresponding settings The heat dissipation region 325 of the geometric center of each of the light-emitting elements 31 has an area larger than the soldering regions 323. The heat-dissipating regions 325 are also provided for use as the light-emitting elements 31 for soldering.

When the flexible circuit board 32 is heated and deformed and deflected, the soldering regions 323 and the flexible circuit board are provided through the deformation slits 322. The deformation spaces of the 32 regions enable the soldering regions 323 to be welded and fixed to the light-emitting elements 31, thereby effectively preventing the light-emitting elements 31 from being peeled off or peeled off.

In summary, when the flexible circuit boards 22, 32 are bent due to the thermal energy generated when the light-emitting elements 21, 31 are operated, such deformation spaces provided by the deformation slits 222, 322 cause such The light-emitting elements 21 and 31 are still soldered and fixed to the soldering regions 223 and 323 to avoid peeling and falling off, and the use efficiency of the strip-elastic solder pad structures 2 and 3 is ensured, so that the object of the present invention can be achieved.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

2‧‧‧Light strip elastic pad structure

21‧‧‧Lighting elements

22‧‧‧Flexible circuit board

221‧‧‧ board

222‧‧‧ deformation joint

223‧‧‧welding area

224‧‧‧Connecting Department

3‧‧‧Light strip elastic pad Structure

31‧‧‧Lighting elements

32‧‧‧Flexible circuit board

321‧‧‧ board

322‧‧‧ deformation joint

323‧‧‧welding area

324‧‧‧Connecting Department

325‧‧‧heating area

1 is a top view showing a circuit board and a plurality of light-emitting elements of a conventional light bar pad structure; FIG. 2 is a perspective view showing a circuit board of a conventional light bar pad structure thermally deformed and deflected, and the light-emitting element FIG. 3 is a top view showing a first preferred embodiment of a light strip elastic pad structure of the present invention; FIG. 4 is a perspective view showing a flexible circuit board of the first preferred embodiment thermally deformed, Flexing, and the illuminating element is still welded and fixed in a soldering zone; FIG. 5 is a top view illustrating the structure of the strip elastic pad of the present invention The second preferred embodiment; FIG. 6 is a perspective view showing the flexible circuit board of the second preferred embodiment being thermally deformed and flexed, and the light-emitting element is still welded and fixed to the soldering regions; and FIG. 7 is The cross-sectional view illustrates that the flexible circuit board of the second preferred embodiment is thermally deformed and flexed, and the light-emitting elements are still soldered and fixed to the soldering regions.

2. . . Light strip elastic pad structure

twenty one. . . Light-emitting element

twenty two. . . Flexible circuit board

221. . . Plate body

222. . . Deformation joint

223. . . Weld zone

Claims (8)

A light strip elastic pad structure comprises: a flexible circuit board comprising a plate body, a plurality of deformation joints penetrating the plate body, a plurality of welding zones respectively defined by the deformation joints, and a plurality of welding wires respectively connected a connecting portion of the region and the plate; and a plurality of light emitting elements soldered to the flexible circuit board, wherein each of the light emitting elements is correspondingly soldered to the plurality of soldering regions. The light strip elastic pad structure according to claim 1, wherein each of the light emitting elements has a plurality of electrical pins, and each of the electrical pins of each of the light emitting elements respectively correspond to Soldering in each of these weld zones. The light strip elastic pad structure of claim 2, wherein each of the connecting portions is located on a side of each of the soldering regions closest to a geometric center of the light emitting element. The light strip elastic pad structure according to claim 3, wherein one side of each of the welding zones is a corresponding connecting portion, and the remaining side edges are corresponding deformation joints. The light strip elastic pad structure of claim 4, wherein each of the weld zones has a rectangular shape, wherein the three side edges are corresponding ones of the deformation joints. The light strip elastic pad structure according to claim 4, wherein the flexible circuit board further comprises a heat dissipation region defined by the deformation slits and correspondingly disposed at a geometric center position of each of the light emitting elements. The light bar elastic pad structure according to item 4 of the patent application scope, The light-emitting elements are light-emitting wafers. The light bar elastic pad structure according to claim 4, wherein the light emitting elements are light emitting diodes.