JPS6363908B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display element mounting structure.

Conventional examples are shown in FIGS. 1 to 4. In the figure, reference numeral 1 denotes a printed board, and on one side of this printed board 1, a large number of light emitting diodes 9, which are display elements, are erected in a line. Further, on the opposite side to the side where the light emitting diode 9 is provided, a connecting portion 11 formed in a pattern and connected to the outside is formed protrudingly. 3' is an L-shaped holder for positioning, holding and fixing a large number of light emitting diodes 9;
One piece is fixed on the printed board 1, and the display part 2 of the light emitting diode 9 is inserted into the insertion hole 4 provided in the other piece, so that the light emitting diode 9 is positioned. At this time, the lead wire 10 of the light emitting diode 9 is bent at approximately 90 degrees and positioned as shown in FIG. 1b. The holder 3' is fixed to the printed board 1 with screws 14 to form a printed board block 6'.
Reference numeral 7 denotes a case having a substantially U-shaped cross section, in which a large number of the printed board blocks 6' are housed and arranged side by side.
There are many connectors 1 on the internal bottom of this case 7.
A motherboard 12 on which 3 is mounted is disposed. Connecting part 11 of print 1 to this connector 13
are contact-fitted, and the printed circuit board block 6' is housed in the case 7. Reference numeral 16 denotes a rectangular parallelepiped positioning member for positioning the printed circuit board block 6' fitted to the connector 13, and this positioning member 16 is fixed to the inner wall surfaces on both sides of the case 7 with screws 15. Further, slits 17 are cut inside each of the positioning members 16, and both ends of the printed board 1 are slid into the slits 17. Therefore, the positioning member 1
The printed board block 6' is made by the slit 17 of 6.
is positioned, along with the light emitting diode 9
will also be positioned. 18 is case 7
This acrylic decorative board 18 is a transparent or translucent acrylic decorative board that covers the opening surface of the case 7, and the acrylic decorative board 18 is placed on the top surface of a mounting piece 19 formed to extend outward from the upper end of the case 7.

FIG. 4 shows another conventional example, in which positioning members 16 for positioning printed board blocks 6' are individually provided in correspondence with each printed block 6'. The positioning member 16 is formed to have a U-shaped cross section, and has a slit 17 inside thereof, and both ends of the printed board 1 are slid into the slit 17, and the printed board block 6' is inserted as in the previous conventional example.
is being positioned.

In such a conventional example, when positioning the display section 2 of the light emitting diode 9, the positioning member 16 is positioned with respect to the printed board 1 of the printed board block 6', so that twisting force is not applied to the printed board 1. In consideration of this, a large gap is created between the positioning member 16 and the printed board 1, which causes a problem in that positional deviation occurs. Also, all printed board blocks 6'
When removing only the printed board block 6' near the center after storing and arranging the holder 3' in the case 7, it is difficult to hold the holder 3' from the surface, so the printed board blocks 6' at the ends must be removed in order. There was the inconvenience of not having to do so. Furthermore, as shown in FIG. 3, the display part 2 of the light emitting diode 9 is inserted into the insertion hole 4 of the L-shaped holder 3', and since only the surface of the display part 2 can be seen, the display of the light emitting diode 9 cannot be made as bright. There was a problem that it could not be displayed.

The present invention has been provided in view of the above-mentioned points, and it is possible to accurately arrange display elements at reference positions when a display section is formed by accommodating a plurality of printed boards on which a large number of display elements are arranged. The purpose is to provide a display element mounting structure.

Embodiments of the present invention will be described in detail below with reference to the drawings.
Note that the configurations inside the printed board 1 and the case 7 are the same as in the conventional example. Reference numeral 3 denotes a holder made of an aluminum plate, iron plate, etc., for positioning and holding and fixing a large number of light emitting diodes 9, which are display elements, installed upright on the printed board 1. This holder 3 is bent to have a substantially U-shaped cross section; A groove 5 is formed in the center.
Further, a side piece 20 extends outward from the upper end of the groove 5 of the holder 3 over approximately the entire length, and cuts are made at both ends of one side piece 20, and the cut portion is bent downward to print. Fixing pieces 21 for fixing the plate 1 are formed respectively. The printed board 1 is brought into contact with this fixing piece 21, and the printed board 1 and the holder 3 are fixed with fixing screws 22, thereby forming a printed board block 6. Furthermore, as shown in FIGS. 6 and 7, the light emitting diode 9 installed upright on the printed circuit board 1 is constructed by bending the lead wire 10 of the light emitting diode 9 at approximately 90 degrees, so that the display section 2 of the light emitting diode 9 can be bent at approximately 90 degrees. It is inserted into the insertion hole 4 of the holder 3 to position the display section 2 within the groove 5. At this time, the flange 23 at the base of the display section 2 of the light emitting diode 9 is inserted into the insertion hole 4 of the holder 3.
A light emitting diode 9 is fixed in contact with the periphery of the lower surface. Therefore, the position of the tip of the display section 2 can be fixed at a position recessed by the dimension A (approximately 0.5 mm) from the top surface of the holder 3, and the height direction of the display section 2 of the light emitting diode 9 in the groove 5 of the holder 3 can be fixed. This allows for positioning. Further, since the light emitting diode 9 is lit within the groove 5 of the holder 3, the inner wall surface of the groove 5 functions as a reflector, so that the light emitting diode 9 is easily visible and lit brightly. An L-shaped notch 8 is cut at the corner of the upper part of the case 7 with the mounting piece 19. This notch 8, which is open at the top, is for positioning and fixing the printed circuit board block 6, and is provided at a location corresponding to each connector 13. The width of the notch 8 is formed to be approximately the same as the width on the outside of the protrusion 25 on the side opposite to the groove 5 of the holder 3, so that when the printed circuit board 1 is fitted into the connector 13, the protrusions on both ends of the holder 3 are formed. The portion 25 is fitted. At this time, since both outer surfaces of the protrusion 25 of the holder 3 come into contact with the inner end surface of the notch 8, the holder 3 is positioned in the horizontal direction. Further, the lower surfaces of both side pieces 20 of the holder 3 engage with the upper surfaces of the mounting pieces 19 of the case 7, and the holder 3 is positioned in the vertical direction. In this case, since no force is directly applied to the printed circuit board 1, the fitting for positioning can be configured with a minimum clearance, thereby eliminating positional deviation. The dimensional tolerance between the printed board 1 and the case 7 is absorbed by the insertion allowance for inserting the printed board 1 into the connector 13. Furthermore, holder 3
Both ends of the protrusion 25 protrude outside the case 7 through the notch 8, and as shown in FIG. 9, by pushing the protrusion 25 upward, the printed board block 6 can be easily removed. be able to. Furthermore, by making the holder 3 from the above-mentioned conductive material such as iron or aluminum, the holder 3 is grounded by the close contact between the case 7 formed of the iron plate and the holder 3, and the effect of blocking noise from the surface of the light emitting diode 9 is achieved. be. Further, the holder 3 may be formed by bending an iron plate, an aluminum plate, or the like, but it may also be formed from an aluminum extrusion molded product as shown in FIG. Note that 24 is a support plate that supports and fixes the motherboard 12.

As described above, the present invention forms a holder that is bent into a U-shaped cross section and has a groove, and has a side piece that extends laterally from the upper edge of the groove over substantially the entire length in the longitudinal direction, A printed board block is formed by inserting the display parts of a plurality of display elements standing upright in a line on a printed board into insertion holes provided in the grooves of the holder, and positioning the display parts of the display elements in the grooves, A notch with an open top is cut into the upper edge of both sides of the case in which a large number of printed board blocks are housed side by side, and both ends of the printed board block holder are fitted into these notches, and the holder is Since the lower surface of the side piece is connected to the upper surface of the case at the upper edge of the notch, the positioning of multiple display elements can be done by installing them into the insertion holes of the holder. The holder can be positioned horizontally by fitting into the notch, and the holder can be positioned vertically by engaging the bottom surface of the side piece of the holder with the top surface of the case at the upper edge of the notch. Also, even when removing the printed board block near the center after placing multiple printed board blocks in the case, it is possible to remove the printed board block near the center by pushing both ends of the holder fitted with the notch from the outside of the case.
This has the effect of allowing any printed board block to be extracted, and since the holder and case have the function of positioning the display element, the number of parts is reduced compared to the conventional example, which required a separate positioning member. play.

[Brief explanation of drawings]

Fig. 1a is an exploded perspective view of a conventional printed board block, Fig. 1b is a side view of the same printed board as above,
FIG. 2 is a perspective view of the same as above, FIG. 3 is a sectional view of essential parts of same as above, FIG. 4 is a perspective view of another conventional example of same as above, FIG. 5 is an exploded perspective view of an embodiment of the present invention, and FIG. The figure is a cross-sectional view of the main part of the printed board block same as above, Fig. 7 is a cross-sectional view of main part showing the state in which the above holder and the display element are attached, and Fig. 8 shows the fitted state of the above holder and the notch. Cross-sectional view, Figure 9 is the same cross-sectional view as above, Figure 10.
The figure is a side view of another embodiment of the same holder.
is a printed board, 2 is a display section, 3 is a holder, 4 is an insertion hole, 5 is a groove, 6 is a printed board block, 7
8 indicates a case, 8 indicates a notch, and 20 indicates a side piece.

Claims (1)

[Claims] 1. A holder is formed which is bent into a substantially 〓-shaped cross section and has a groove, and a side piece that extends laterally from the upper edge of the groove over approximately the entire length in the longitudinal direction, and is arranged in a line on a printed board. A printed board block is formed by inserting the display parts of a large number of upright display elements into the insertion holes provided in the grooves of the holder to position the display parts of the display elements in the grooves, and a large number of printed board blocks are arranged side by side. A notch with an open top is cut in the upper edge of both sides of the case to be stored and arranged, and both ends of the holder of the printed board block are fitted into these notches, and the side pieces of the holder are cut out on the bottom surface. A display element mounting structure that engages with the top surface of the case on the upper edge.