JPH0252461B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a small receiving device equipped with a display device for receiving a wireless signal transmitted from a wireless station and displaying characters corresponding to the signal. be.

Structure of the conventional example and its problems As shown in FIG. A see-through plate 5 is attached to the formed see-through window 4. A liquid crystal display panel 6 is pressed into contact with the inside of the transparent plate 5 of the lid body 3. As shown in FIG. 2, this liquid crystal display panel 6 is provided with a stepped portion 7 along one side in the longitudinal direction, and a plurality of terminals 8 are provided on this stepped portion 7. A connector 9 is inserted into the stepped portion 7 of the liquid crystal display panel 6.
This connector 9 has a semicircular cross section as shown in FIG. The parts 12 and the insulating parts 13 made of insulating rubber are arranged alternately. A light reflecting plate 14 is pressed against the back surface of the liquid crystal display panel 6. On the other hand, the printed circuit board 15 is provided with a wireless receiver, a control circuit, a liquid crystal display element drive circuit, etc. A holder 17 is attached to one side of the printed circuit board 15 with screws 18, and a stopper is attached to the other side. 19 are provided. One side of this printed board 15 is inserted between the light reflecting plate 14 and the connector 9, and the terminal 20 provided on the printed board 15 is brought into contact with the conductive part 12 of the connector 9, and the holder 17 is inserted into the light reflecting plate 14. It is pressed. A screw 22 is screwed into the stopper 19 of the printed circuit board 15 through a hole 21 in the bottom of the case body 2. In such a small receiving device with a display device, in order to increase the resolution of displayed characters, increase the number of liquid crystal light emitting elements, and increase the number of character feed functions, etc., the number of terminals and wiring must be increased. Must be. Therefore, in order to maintain miniaturization by making each component the same size, there were problems such as the wiring spacing becoming narrower and precision machining being required.

Purpose of the Invention The present invention eliminates the above-mentioned conventional problems, and makes it possible to achieve high resolution and multifunctionality of characters without sacrificing the size and size. The purpose of this invention is to provide a compact receiving device.

Structure of the Invention In order to achieve the above object, the present invention includes a flat case having a transparent plate, a liquid crystal display plate supported on the inside of the transparent plate of the case, and a liquid crystal display plate supported at two places on the back side of the liquid crystal display plate. first and second connectors;
a first printed circuit board provided with a liquid crystal display element drive circuit, supported on the back surfaces of the first and second connectors, and electrically connected to the liquid crystal display board by the first and second connectors; a third connector supported on the back side of the first printed circuit board;
A second printed circuit board provided with a control reception circuit, supported within the case, and provided orthogonally to the first printed circuit board, which is electrically connected to the first printed circuit board by the third connector. The present invention is characterized in that the liquid crystal display element driving signal line is divided into two to drive the liquid crystal display element.

DESCRIPTION OF EMBODIMENTS Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 4 and 5, the case 51 is formed flat, and includes a case body 52 and a lid body 5.
3, and the case body 52 is fitted into a protrusion 54 provided at the center of the long side of the open side of the lid body 53. A pair of left and right rectangular engagement holes 54a are formed in this protrusion 54. A pair of bosses 55 are provided on the short side inside the lid body 53, and each boss 55 has a screw hole 55a formed therein. A see-through window 56 is formed on the top plate of the lid body 53, and a see-through plate 57 made of synthetic resin or the like is attached to this see-through window 56. A liquid crystal display board 58 is inserted inside the transparent plate 57 of the lid body 53, and this liquid crystal display board 58 has stepped portions 59 formed along two long sides, and a plurality of terminals 60 are provided in each stepped portion 59. (See Figure 2). A light reflecting plate 61 is inserted into the back surface of the liquid crystal display plate 58, and a recess 6 is formed between the light reflecting plate 61, the stepped portion 59 of the liquid crystal display plate 58, and the long side of the lid body 53.
2 are formed, and first and second connectors 63 and 64 are inserted into each recess 62. Each connector 6
3 and 64, a core member 65 is covered with an outer skin consisting of a conductive part 66 and an insulating part 67, as in the conventional example. A first printed circuit board 68 is inserted and supported on the back of the light reflection plate 61 and the first and second connectors 63 and 64, and this first printed circuit board 68 is provided with a liquid crystal display element driving circuit, and the first printed circuit board 68 is provided with a liquid crystal display element driving circuit. A plurality of terminals 69 and 70 are provided along two long sides, and a plurality of terminals 71 are provided along one long side on the back side. Terminals 69 and 70 of the first printed circuit board 68 are electrically connected to the liquid crystal display panel 58 through conductive portions 66 of the first and second connectors 63 and 64. A holder 72 is inserted into the back of the first printed circuit board 68, and a pair of protrusions 73 provided at the center of the long side of the holder 72 are forcibly inserted into the engagement holes 54a of the protrusions 54 in the lid 53. It is press-fitted and engaged. This holder 72
A hole 74 is provided on the short side of the first printed circuit board 68.
75 is formed, and a screw 76 is inserted into the screw hole 55a of the boss 55 in the lid body 53 from these holes 74 and 75.
is screwed in, and the liquid crystal display board 58, light reflecting plate 61, first and second connectors 63, 64, and first printed circuit board 68 are held against the top plate of the lid body 53 by the protrusion 77 of the holder 72, It is supported within the lid body 53. Therefore, the contact between the terminal 60 of the liquid crystal display board 58 and the terminals 69, 70 of the first printed circuit board 68 and the conductive parts 66 of the first and second connectors 63, 64 can be reliably maintained in a stable state. Furthermore, it is possible to prevent the liquid crystal display panel 58 and the first printed circuit board 68 from sagging. A protrusion 78 is located on both sides of the protrusion 73 on one long side of the holder 72.
are provided to protrude from the back, and a hole 79 is formed in each protrusion 78 . One side of the second printed circuit board 80 is overlapped with the long side end surface of the holder 72 and the protrusion 78, and the notch 81 of the second printed circuit board 80 is fitted to the outside of the protrusion 73 of the holder 72, and the notch is Holes 82 provided on both sides of 81 are aligned with holes 79 of protrusion 78 . This second printed circuit board 80 is provided with a wireless receiver, a control circuit, etc., and a plurality of terminals 83 are provided on the sides of the notch 81. A holder 84 is stacked on one side of the second printed circuit board 80 so as to sandwich the second printed circuit board 80 with the holder 72, and a notch 85 formed in this holder 84
The notch 85 is fitted on the outside of the protrusion 73.
The screw holes 86 provided on both sides of the holes 79, 8
2. Further, a recess 87 is formed in the holder 84 on the side of the notch 84, that is, corresponding to the terminal 83 of the second printed circuit board 80.
A third connector 88 is inserted and held between the recess 87, the second printed circuit board 80, and the first printed circuit board 68. This third connector 88 is also similar to the first and second connectors 63 and 6.
4, a conductive part 66 and an insulating part 67 are provided on the core material 65.
It is covered with an outer skin made of Then hole 7
The screw 89 from 9 and 82 is inserted into the screw hole 8 of the holder 84.
6, the second printed circuit board 80 and holder 84 are connected to the holder 72, and accordingly, the terminal 83 of the second printed circuit board 80 is connected to the first printed circuit board by the conductive part 66 of the third connector 88. It is electrically connected to the terminal 71 of 68. Second
A stopper 90 is provided at the center of the other side of the printed circuit board 80.
A screw hole 91 is formed in this stopper 90, and a hole 92 corresponding to the screw hole 91 is formed in the bottom plate of the case body 52. A screw 93 is screwed into the screw hole 91 through the hole 92, and the second printed circuit board 80 is fixed to the case 51.

In this embodiment, the holder 72 supports the liquid crystal display board 58, the light reflection plate 61, the first and second connectors 63, 64, and the first printed circuit board 68, and supports the first printed circuit board 68 and the liquid crystal display board as described above. In addition to ensuring a reliable electrical connection with the
It is possible to support the printed circuit board 80 and the third connector 88, to ensure reliable electrical connection between the second printed circuit board 80 and the first printed circuit board 68, and to perform many functions with one component. Therefore, the device can be miniaturized, which is economically advantageous.As is clear from the above explanation, according to the present invention, a liquid crystal display panel and its liquid crystal display element driving circuit are provided. The first printed circuit board is electrically connected by two connectors, and the second printed circuit board provided with the control receiving circuit is electrically connected to the first printed circuit board by a third connector. Therefore, the liquid crystal display element drive signal line can be divided into two and connected to two rows of contacts provided on the liquid crystal display board, making manufacturing easier without requiring high precision and reducing the cost of miniaturization. In addition, the printed circuit board can be divided into a first and second board, and the first board can be used to increase the resolution of LCD characters. (The problem of an increase in the number of terminals due to an increase in the number of dots), the third connector is provided on the back side of the first board to connect with the second board provided orthogonally to the first board. This has been achieved by making it possible to three-dimensionally arrange the substrate within a small receiving device, which has the advantage of making the device more compact.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a conventional small receiver, Fig. 2 is a partially enlarged perspective view of a liquid crystal display panel, Fig. 3 is a partially perspective view of a connector, and Fig. 4 is an example of a small receiver of the present invention. FIG. 5 is an exploded perspective view showing the embodiment, and FIG. 5 is a sectional view of the device in an assembled state. 51...Case, 52...Case body, 53...
... Lid body, 57 ... Transparent plate, 58 ... Liquid crystal display board,
60...Terminal, 61...Light reflecting plate, 63...First
connector, 64... second connector, 68...
First printed circuit board, 69, 70, 71...Terminal, 72...Holder, 80...Second printed circuit board, 83...Terminal, 84...Holder, 88...
...Third connector.

Claims (1)

[Scope of Claims] 1. A flat case, a transparent plate provided on one side other than the flat surface, a liquid crystal display plate supported inside the transparent plate of the case, and this liquid crystal display plate. A first and second connector supported at two places on the back surface of the device and a liquid crystal display element driving circuit are provided, and a liquid crystal display element driving circuit is supported on the back surface of the first and second connectors and is connected to the first and second connectors. A first printed circuit board electrically connected to the liquid crystal display board, a third connector supported on the back side of the first printed circuit board, and a control receiving circuit are provided, parallel to the flat surface. a second device provided and supported by the case;
a printed circuit board, and the first printed circuit board is electrically connected to the second printed circuit board by the third connector. 2. Liquid crystal display board, first and second connectors, and first
2. The compact receiving device according to claim 1, wherein the printed circuit board is supported by being held between a holder attached to the case and a transparent plate side of the case on the back side of the first printed circuit board. 3 Liquid crystal display board, first and second connectors, and first
The printed circuit board is supported by being sandwiched between a holder attached to the case and the see-through plate side of the case on the back side of the first printed circuit board, and the second printed circuit board is connected to and supported by the holder. The small receiving device according to item 1. 4 Liquid crystal display board, first and second connectors, and first
The printed circuit board is held and supported by a holder attached to the case on the back side of the first printed circuit board and the see-through plate side of the case, the second printed circuit board is connected to and supported by the holder, and the third printed circuit board is supported by being connected to the holder. 2. The compact receiving device according to claim 1, wherein the connector is supported by a holder attached to the second printed circuit board. 5. The compact receiving device according to claim 4, wherein the holder supporting the second printed circuit board and the third connector is screwed together to a holder located on the back side of the first printed circuit board. 6 The case is composed of a case body and a lid body, a see-through plate is attached to a see-through window formed on the top plate of the lid body, a holder on the back of the first printed circuit board is attached to the lid body, and a liquid crystal display board, a 1. The small receiving device according to any one of claims 2 to 5, wherein the second connector and the first printed circuit board are housed inside the lid. 7 The holder on the back side of the first printed circuit board is engaged by forcibly press-fitting its protrusion into the engagement hole of the protrusion provided on the open side of the lid, and also engages with the screw hole of the boss provided on the inside of the lid. 7. The small-sized receiving device according to claim 6, wherein the receiving device is fastened to the receiving device by screws.