JPH019980Y2 - - Google Patents

Description

[Detailed description of the invention] This invention uses solid-state light-emitting elements such as light-emitting diodes and solid-state lamps (hereinafter simply referred to as light-emitting elements) to display multiple bars, multiple rows, or displays in which light-emitting elements are scattered. The present invention relates to an assembly jig for line-shaped display devices used for etc.

In general, this type of line-shaped display device has a large number of light emitting elements 1 mounted on a mounting board (hereinafter simply referred to as the board) 2 such as a printed circuit board at a desired height H (emitting light is emitted from the surface 2a of the board 2) as shown in FIG. It is necessary to fix the element 1 by lifting it up by the distance up to the tip of the lens portion 1a of the element 1 in accordance with the shape of the reflecting surface of the reflecting frame 3. Here, S is a transparent sheet or a diffusion sheet.

Conventionally, when assembling such a line-shaped display, as shown in FIG.
The leads 1b and 1c are inserted into the through-holes 5 provided on the substrate 2 at positions corresponding to the arrangement of the light-emitting elements 1, respectively, and raised to a desired height H, and the leads 1b and 1c are connected to the back surface 2b (pattern surface) of the substrate 2. Solder and secure. Alternatively, as another example, as shown in FIG.
Insert the tip of the lens part 1 into the position corresponding to the insertion hole 5 of the lens part 1.
In the same shape as a, cylindrical engravings 6a and 6b are formed at the rear end to be slightly larger than the diameter of the collar portion (stay) 1d, and the depth l of the cylindrical engraving 6b is set to the desired value of the light emitting element 1. A frame 6 made of paeklite etc. formed to have a height H
is placed over the substrate 2 so as to cover each light emitting element 1 from the front surface 2a side of the substrate 2, that is, from the bottom in the figure, and then the leads 1b and 1c are manually attached to a pattern (not shown) on the back surface 2b of the substrate 2. After each light emitting element 1 was soldered one by one to the desired height H and fixed to the substrate 2, the whole was turned over and the frame 6 was removed to assemble.

In this conventional assembly method, each light emitting element is manually installed and fixed one by one, so the light emitting elements tend to be tilted and their heights are uneven, making it difficult for the optical axis and luminous intensity of the light emitting elements to be uniform. Otherwise, the desired amount of light cannot be obtained. Furthermore, since multiple light emitting elements are mounted, they do not fit into the predetermined holes of the reflective frame. Furthermore, the process requires a lot of time and effort, resulting in poor production efficiency and yield, resulting in a significant increase in processing costs.

This idea was made in view of the points mentioned above.
By positioning the array on the substrate and providing a frame with through holes in which the light emitting elements can be loosely fitted up and down, a rubber-like flexible permanent magnet, that is, a rubber-like magnet, is attached to the top surface of the frame. After each light-emitting element is levitated to a desired height using magnetic force, the leads of each light-emitting element are soldered to the patterned surface of the substrate, thereby achieving a uniform yield suitable for high-volume production on the substrate with high precision. The purpose is to provide an assembly jig for a good line-shaped display.

Hereinafter, embodiments of this invention will be explained in detail with reference to FIGS. 4 to 9.

Components that are the same as those shown in FIGS. 1 to 3 are designated by the same reference numerals, and some explanations will be omitted.

In FIG. 4, leads 1b and 1c of light emitting element 1
Silver-plated iron is used as a material, and it is sequentially inserted into the desired insertion holes 5 of the substrate 2 so that the bottom surface of the flange 1'd of the light-emitting element 1' is aligned with the substrate 2.
They are arranged in such a way that they are brought into contact with the surface 2a. Guide holes 7a and 7b are provided at both ends of the substrate 2 in the longitudinal direction so that the substrate 2 can be accurately joined to a frame 8, which will be described later.

Next, as shown in FIGS. 5 and 6, a rectangular parallelepiped frame 8 made of Bakelite or the like is used to loosely fit the plurality of light emitting elements 1 on the substrate 2 at a desired height H and arrange them in the array position. A desired number of cylindrical through holes 9 for positioning are provided so that their axes are perpendicular to the surface of the substrate 2.

A rubber magnet (a flexible permanent magnet, for example, a so-called rubber magnet made of a mixture of rubber and ferrite magnet powder) 10 is attached to the upper surface 8a of the frame 8 in the same shape as this, while the guide hole 7a is attached to the bottom surface 8b of the frame 8. ，
Guide pins 11a and 11b for positioning are respectively provided vertically downward at the position to be inserted into 7b.

Next, in order to assemble the line display using the jig configured in this way, first, as shown in FIG. After holding the board 2 that has been dropped into the board almost horizontally, as shown in FIG. 11a, 11b
are inserted into the guide holes 7a and 7b, respectively, so that the rubber magnet 10, the frame 8, and the substrate 2 are integrated into one body.

In this way, the magnetic parts of each light emitting element 1 such as the leads 1b and 1c of each light emitting element 1 are attracted by the magnetic force of the rubber magnet 10 and float into the through hole 9, so that the tip of the lens part 1a is attached to the rubber magnet 10. The light emitting element 1 is brought into suction contact with the lower surface 10a so that the optical axis thereof is perpendicular to the lower surface 10a, and then stopped. In this state, the back surface 2b, that is, the pattern surface side, of the substrate 2 is immersed in a solder dip tank (not shown), and all the leads 1b and 1c can be welded and fixed to the through-hole 5 with the solder 12 in one operation. Next, the frame 8 and the rubber magnet 10 are disassembled and removed from the substrate 2, thereby completing the assembly of the line display.

In the embodiment shown in FIGS. 7 and 8, the frame 13 in which the thickness of the frame 8 in FIG. Therefore, the structure is such that a vertical frame 14 is installed perpendicularly on the substrate 2, and has a long hole 14a for adjusting and fixing the vertical position of the frame (not shown) and a screw 14b for screwing from the side. The height H can be adjusted by loosening the screw 14b. In this case, the action of the rubber magnet 10 and the role of the guide pin 11a (pin 11b is not shown) are the same as in the embodiment shown in FIG.

Figure 9A shows a cylindrical light-emitting element, Figure 9B shows a square light-emitting element, Figure 9C shows a thin square light-emitting element, and Figure 9D shows a triangular prism-shaped light-emitting element. It shows the shape of the symbol,
It may be used as the light emitting element 1 in the embodiment.

As described above, according to this invention, there is provided a frame provided with through holes in which each light emitting element can be positioned and loosely fitted into the frame, and each light emitting element is levitated into the through hole by magnetic force to a certain height and height. This is an assembly jig for a line-shaped display consisting of rubber magnets arranged perpendicularly to the panel surface of a transparent or diffuser sheet on the front. Can be attached.

(2) It is possible to solder the board with the pattern side facing downward, and therefore all the patterns can be soldered in a single operation by dipping it into a solder dip tank. No mistakes occur during attachment work.

(3) The height of the mounting position of the light emitting element can be adjusted freely.

(4) The height and position between each light emitting element can be determined accurately.

(5) Not only displays in multiple rows, but also displays in multiple rows can be easily created.

(6) Effective for light-emitting elements of various shapes with flat front surfaces.

(7) It can also be used in displays in which light-emitting elements are scattered on a substrate.

(8) There is no tilting of the light emitting element, and the direction of emitted light is determined accurately.

(9) Since a rubber-like magnet is used, the lens part of the light emitting element is not scratched.

(10) The jig structure is extremely simple, so it is easy to implement.

(11) From the above, work efficiency is greatly improved, processing is easy, processing costs are significantly reduced, and it is suitable for mass production.

There are other effects.

[Brief explanation of drawings]

Figures 1 to 3 explain the conventional structure of a conventional line-shaped display, in which Figure 1 is a side sectional view of the main part showing an example of a multiple bar-shaped display, and Figure 2 is a light-emitting element. Fig. 3 is a side sectional view of the main part showing another example, Fig. 4 to Fig. 9 are examples of the invention, and Fig. 4 is a side view showing the state in which it is attached to the board. FIG. 5 is a front sectional view of one embodiment showing the relative positions of the positioning jig, the substrate, and the light emitting device during assembly; FIG. 6 is an overall perspective view of the same embodiment. , FIG. 7 is a front sectional view of main parts showing another embodiment, FIG. 8 is a side view of the same, and FIG.
Figures A, B, C, and D are diagrams showing perspective views and front symbols of light emitting elements of various shapes, respectively. 1...Solid light emitting device, 1b, 1c...Lead,
2... Mount board, 5... Insertion through hole, 7a, 7
b... Guide hole, 8... Frame, 9... Through hole, 10
...Rubber magnet, 11a, 11b...Guide pin.

Claims (1)

[Scope of utility model registration request] a mount substrate having a plurality of through-holes into which a plurality of solid-state light emitting elements are to be arranged and a guide hole through which a guide pin of a frame is inserted; a frame having a through hole into which the frame can be loosely fitted, and a guide pin inserted into the guide hole of the mount board;
It has a rubber-like magnet affixed to the top surface of this frame,
A solid light emitting device with a lead inserted into the through-hole of the mount board is arranged so that the guide pin of the frame is positioned in the guide hole of the mount board, and when the frame is combined with the mount board, the magnetic force of the rubber magnet is applied. An assembly jig for a line-shaped display that is floated through a through-hole in a frame and aligned at a desired position.