JPS6042517Y2 - dial display device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dial display device for a radio receiver or the like.

Recently, in radio receivers, etc., a light emitting element is attached to the pointer part that runs along the dial display board as the tuning child is operated, and this light emitting element is made to emit light only when tuning, or to emit light all the time. There are many display devices on the market that display the tuning state and tuning frequency, but in conventional display devices of this type, a light emitting device is connected between a light emitting element drive circuit in a part of the tuner and the light emitting device. There are disadvantages in that the wire for supplying power to the light emitting element is easily twisted and broken during operation of the tuning heir, and a large space is required to accommodate the wire.

For this reason, a device in which the light emitting element attached to the pointer part and the drive circuit of the light emitting element are connected by a flexible printed circuit board is also disclosed in Japanese Utility Model Application Publication No. 51-107201 and Japanese Utility Model Application Publication No. 54-177949%. has been done.

However, in all of these methods, mounting of the light emitting element and wiring work were troublesome.

In view of this, the present invention includes a light emitting element attached to the pointer,
The light emitting element is connected to a drive circuit by a flexible printed circuit board, and no matter what position the pointer moves, the flexible printed board moves easily to maintain electrical continuity between the light emitting element and the drive circuit; Moreover, the purpose of this invention is to provide a dial display device that can be stored compactly using a flexible printed circuit board and that makes it extremely easy to assemble the pointer section. One embodiment will be described with reference to FIGS. 1 to 5.

Reference numeral 1 denotes a chassis made of synthetic resin, and the chassis includes a rail portion 2, a groove-shaped recess portion 3 for storing a flexible printed circuit board,
Boo IJ-22, 22 mounting shaft portion 4.4, L-shaped protrusion 5,
5 etc. are integrally molded.

Reference numeral 6 denotes a pointer main body made of synthetic resin, and includes a pair of legs 7, 7' and a light emitting element holding section 8.

The pointer body has a groove 9 for housing a light emitting element in the center of the light emitting element holder 8, and a groove 9 extending from the upper surface of the light emitting element holder 8 to the lower surface along the rear surface 10 of the rear leg 7'. A penetrating terminal insertion hole 11 for the light emitting element is provided, and a projection 1 for fixing the dial rope is provided on the front end side of the upper surface of the light emitting element holding part 8.
2° 12.12 are integrally molded, and furthermore, a protrusion 13.13 for fixing a flexible printed circuit board by heat welding is integrally molded on the rear surface 10 of the rear leg portion 7'.

14 is a light emitting element such as a light emitting diode, and its terminal 15
．． 15 has one end soldered to printed patterns 17, 17 of a flexible printed circuit board 16 fixed to the rear surface 10 of the rear leg 7' of the pointer main body 6.

Reference numeral 18 denotes a cover made of a metal plate such as aluminum or synthetic resin, etc., one end of which is bent into a U-shape, and a round window 20 for transmitting light is formed in the flat part 19. A colored reference line 21 serving as an index is drawn at the center passing through.

The cover 18 is inserted into the pointer main body 6 in the direction of the arrow in FIG. 4, and presses down the light emitting diode 14 so that the light from the light emitting diode 14 appears only through the round window 20 of the cover 18.

In this way, the cover 18 hides the groove 9 of the pointer body 6, the insertion hole 11, and the terminals 15, 15 of the light emitting diode 14, and holds the light emitting diode 14.

The light emitting diode 14 can be assembled by simply inserting the terminal 15.15 into the insertion hole 11 of the pointer body 6, storing it in the groove 9, and then attaching the cover 18 to the pointer body 6.
5 is brought to a predetermined position corresponding to the printed pattern 17.17 at one end of the flexible printed circuit board 16, so that the installation and wiring work of the fine light emitting diode 14 can be easily performed.

The pointer section 23, which is composed of the pointer body section 6, the light emitting diode 14, and the cover 18, and is engaged with the rail section 2 of the chassis 1, has the protrusions 12, 12?
A dial rope 24, which is wound around a tuning shaft (not shown) and suspended between pulleys 22, 22, is fixed to 12.

Further, the flexible printed circuit board 16, whose one end is fixed to the pointer main body 6, is changed direction once within the recess 3 of the chassis 1, and is disposed along one side wall 25 of the recess 3 of the chassis 1. It is fixed to one end with adhesive or the like.

26. 26 is a lead wire that connects the flexible printed circuit board 16 and a light emitting element drive circuit (not shown), and the lead wire passes through an insertion hole (not shown) provided at the other end of the flexible printed circuit board 16. The printed patterns 17 and 17 of the flexible printed circuit board 16 are soldered to each other.

28 is a back plate fixed by projections 5, 5 of the chassis 1 to cover the recess 3 of the chassis 1, 29 is a cabinet, and 30 is a transparent dial plate.

In the dial device configured in this way, the pointer 23 moves left and right from point A to point B as shown in FIG. 2, but the flexible printed circuit board 16 also moves smoothly within the recess 3 of the chassis 1. .

Therefore, the movement of the pointer section 23 does not cause any trouble to other parts, nor is it affected by other parts.

Moreover, the flexible printed circuit board 16 is connected to the back plate 2.
Since it is blindfolded by 8, it cannot be seen from the outside.

As described above, the present invention uses a flexible printed circuit board to supply power to the light emitting element attached to the pointer, and the chassis has a rail section for running the pointer and a recess for storing the flexible printed circuit board. Since the flexible printed circuit board is moved within the recess when the pointer section moves, the flexible printed circuit board moves smoothly and does not twist, so there is no risk of wire breakage and the flexible printed circuit board can be stored compactly.

Furthermore, the pointer main body part constituting the pointer part includes a leg part that is engaged with the rail part and a light emitting element holding part, and the light emitting element holding part has a groove part for storing the light emitting element and a groove part continuous with the groove part for holding the light emitting element holding part. There is a terminal insertion hole for the light emitting element that passes through one side of the leg from one side to the other side, so simply store the light emitting element in the groove of the pointer body and attach the cover to the pointer body. The light emitting element is held by the pointer body, and the terminal of the light emitting element is brought to a predetermined position corresponding to the printed pattern on one end of a flexible printed circuit board fixed to one surface of the leg of the pointer body.

Therefore, installation and wiring work of fine light emitting elements such as light emitting diodes can be easily performed.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIGS. 1 and 2 are perspective views and plan views showing essential parts of the dial display device of the present invention, FIG. 3 is a sectional view of the dial device of the present invention, and FIG. FIG. 5 is an exploded perspective view and an assembled perspective view of the pointer part constituting the dial device of the present invention. 1...Chassis, 2...Rail part, 3
...... recess, 14... light emitting diode,
16...Flexible printed circuit board, 23...
...Guideline section.

Claims (1)

[Scope of utility model registration request] It consists of a pointer part, a chassis in which a rail part for running the pointer part, and a recess for storing a flexible printed circuit board are formed, and the pointer part has a light emitting element, a leg part engaged with the rail part, and a light emitting element holding part. a pointer body, the holding part being provided with a groove for housing a light emitting element, and a terminal insertion hole for a light emitting element extending from the groove and penetrating along one surface of the leg from one side of the holding part to the other side of the holding part; and a cover provided with a translucent window and attached to the pointer main body, and one end of the flexible printed circuit board for supplying power to the light emitting element is attached to the leg of the pointer main body. A dial display device, which is fixed to one surface of the flexible printed circuit board, and a terminal of the light emitting element is soldered to a printed pattern at one end of the flexible printed circuit board.