JPH04113463U - Light emitting diode mounting structure - Google Patents

Abstract

(57) [Summary] [Structure] A printed circuit board with a concave positioning part for attaching a light emitting diode in the center, and thin parts 3 or holes 11 on both sides of this positioning part 2 to provide elasticity, Minimum size light emitting diode 6 in positioning part 2
The depth of the concave shape is such that when the light emitting diode 6 is attached, the light emitting diode 6 comes into contact with the light emitting viewing hole 10 provided in the housing. [Effect] It is possible to create a structure that eliminates the gap between the light emitting diode and the housing when it is attached. Therefore, it is possible to prevent the unsightly appearance caused by gaps and the intrusion of dust, etc., which is required in the past, and there is no need for a spacer for positioning the light emitting diode in the height direction, improving work efficiency and reducing the number of parts. be able to.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a light emitting diode mounting structure.

0002

[Conventional technology]

The conventional mounting structure for light emitting diodes is shown in the plan and side views of Figures 4(a) and (b). As shown, the light emitting diode 6 is soldered to the printed circuit board 8 by a connecting wire 12. However, the light emitting element of the light emitting diode 6 may be damaged due to the heat generated at that time. Since there is a high possibility of damage, it is necessary to install it at a certain height above the printed circuit board 8. There is. For this reason, after installing the spacer 9 on the bottom of the light emitting diode 6, It is fixed to the printed circuit board 8. A printed circuit board 8 like this is held at a predetermined height. It is fixed to the boss 4 of the housing 5 with screws 7.

0003

[Problem that the idea aims to solve]

In this conventional light emitting diode mounting structure, the external dimensions of the light emitting diode 6 are The dimensions of boss 4 were determined by taking into account variations in standard values and looseness during soldering. It is necessary to form the diode 6 to fit the maximum mounting height dimension. death Therefore, for those whose height is lower than the set dimensions, the hole 10 for the light emitting diode and the light emitting The disadvantage is that a gap is created between the diode 6 and the appearance is unsightly. There is. Also, if there is a problem that dirt etc. can easily get inside the housing 5 through this gap. In both cases, there is a cost increase due to the increase in the number of man-hours and parts required to install the spacer 9. There is also the drawback of top-up.

0004

[Means to solve the problem]

The light emitting diode mounting structure of this invention mounts the light emitting diode in the center. A concave positioning part and a thin plate on both sides of this positioning part to provide elasticity. A printed circuit board with a fleshy part or a hole, and a light emitting diode of minimum size in the positioning part. A light-emitting visual indicator that the light-emitting diode is provided in the housing when the diode is installed. This is the depth of the concave shape that contacts the hole.

[0005]

【Example】

Next, the present invention will be explained with reference to the drawings.

[0006] Figures 1(a) and 1(b) each show a plastic positioning example of an embodiment of the present invention. A plan view of the printed circuit board 1 having the section 2, and a sectional view taken along the line AA in FIG. 1(a), FIG. (a) and (b) are a partially modified plan view and BB sectional view of this embodiment, and FIG. FIG. 3 is a side view showing a state in which a photodiode is attached to the housing of this embodiment. In Figure 1 , a printed circuit board 1 on which a conductor pattern is formed from an elastic plastic material. The light emitting diode 6 is fixed in the center by floating it at a predetermined height above the printed circuit board surface. In order to make the It has a thin wall portion 3. The light emitting diode 6 is fixed in the recess of the printed circuit board 1. Ru. In FIG. 3, the height of the boss 4 of the housing 5 is the minimum value for the light emitting diode 6. At some point, set the height so that it fits tightly into the hole 10 of the housing 5, and then insert the printed circuit board 1. It is fixed onto the boss 4 with screws 7.

[0007] As another embodiment, both ends of the positioning part 2 of the printed circuit board 1 have the necessary elasticity. Instead of the shape of the thin wall portion 3 of the structure, a hole 11 is provided as shown in FIGS. It has the same effect. This makes the height of the light emitting diode 6 smaller than the minimum value. Even if the printed circuit board 1A is large, the printed circuit board 1A will bend and the light emitting diode 6 and hole 10 will be tightly connected. It is designed so that no gaps can occur.

[0008]

[Effect of the idea]

As explained above, the present invention is based on a plastic molded with elasticity. a recessed positioning portion for fixing the light emitting diode in a predetermined position on the printed circuit board; By providing a thin walled part or hole that provides elasticity, the shape of the light emitting diode mounted It is possible to create a structure that eliminates the gap between the housing and the housing. Therefore, conventionally It is possible to prevent unsightly appearance and the intrusion of dirt due to gaps such as This eliminates the need for spacers for positioning the light emitting diode in the height direction, improving workability. This has the effect of reducing the number of parts.

[Brief explanation of drawings]

FIG. 1 is a plan view and an AA sectional view of an embodiment of the present invention.

FIG. 2 is a plan view and a BB sectional view of a modification of the present embodiment.

FIG. 3 is a side view of an example to which this embodiment is applied.

FIG. 4 is a side view of a conventional light emitting diode mounting structure.

[Explanation of symbols]

1,1A,8 Printed circuit board 2 Positioning part 3 Thin wall part 4 Boss 5 body 6 Light emitting diode 7 Screws 9 Spacer 10,11 hole 12 Connection line

Claims (1)

[Scope of utility model registration request] 1. A printed circuit board having a concave positioning part for mounting a light emitting diode in the center, and a thin walled part or a hole provided on both sides of this positioning part to provide elasticity, the positioning part having a minimum dimension. A light emitting diode mounting structure characterized in that the depth of the concave shape is such that when the light emitting diode is mounted, the light emitting diode comes into contact with a light emitting viewing hole provided in the housing.