JPH0434550Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a novel display device constructed using an electroluminescent lamp module (hereinafter referred to as an EL module).

(b) Prior Art Conventionally, as a display device that performs a luminescent display in response to this type of signal, one is known that is constructed by arranging a large number of indicator lights using incandescent bulbs or LED lamps in parallel.

(c) Problems that the invention aims to solve By the way, display devices constructed using incandescent light bulbs or LED lamps as described above have a large size, and are not compatible with the recent trend toward miniaturization of electronic devices (equipment). However, there was a need for improvement in this respect.

(d) Means for solving the problem In this invention, in order to solve the above problem, a printed circuit board equipped with a terminal section is provided, and a sheet-like EL is installed at a plurality of predetermined parts of this printed circuit board.
Each module is arranged in the peripheral part of the EL module together with a spacer sheet whose thickness is almost the same as that of the EL module, and the EL module is connected to the terminal part of the printed circuit board using a detachable conductive connecting member at the electrode lead-out part. The display device was configured by attaching the conductive connecting member so that it could be drawn out, and by laminating and attaching a surface sheet with the portion corresponding to the EL module as a transparent portion on the EL module and the spacer sheet. It is characterized by

(e) Effect Therefore, in the display device of this invention, when a voltage signal is applied, voltage is applied to the electrode lead-out portion of the EL module via the conductive wire and the conductive connecting member of the printed circuit board, and the EL module is lit, and a light-emitting display is made in the transparent portion of the top sheet.

(f) Embodiment An embodiment of this invention will be described below with reference to the drawings.

In Fig. 1, 1 is a printed circuit board, and a plurality of through holes 1a and 1b, which are bored at an IC pitch (a multiple of 2.54 mm), are provided in pairs at predetermined positions. is led out to the terminal portion 10 of the printed circuit board 1 by a conductive wire (not shown). Note that the terminal portion 10 is electrically connected to a signal source by means such as fitting into a connector (not shown). 2 is an EL module, which is formed in a thin sheet shape with a thickness of 1 mm or less and has a light emitting part 20 and an electrode lead-out part 21 as shown in FIG. 2, and is available in various sizes. Two electrodes 21a and 21b are led out from the electrode lead-out portion 21, and are connected to the IC so as to correspond to the through holes 1a and 1b formed in the printed circuit board 1, respectively.
Terminal holes 21c and 21d are formed with pitches, and connecting pins 3a and 3b, which are conductive connecting members, are inserted into the terminal holes 21c and 21d and passed through the through holes 1a and 1b to connect the EL module 2 to the printed circuit board 1. I try to attach myself to it. In this case, the connection pins 3a and 3b have hooks 3d at their tips.
Since the elastic piece 3c is formed with the elastic piece 3c, it can be locked with the hook 3d in the through-holes 1a and 1b of the printed circuit board 1.
Since the hook 3d is brought into contact with the through holes 1a and 1b, electrical continuity is established. Note that the connecting pins 3a and 3b can be removed from the printed circuit board 1 by removing the hook 3d. In addition to these connection pins, various other conductive connection members can be considered, including the electrode 21a of the EL module 2,
21b and the conductive wire of the printed circuit board 1, and also has the function of detachably attaching the EL module 2 to the printed circuit board 1. In addition, the EL module 2 is the light emitting part 2.
0 is attached to the printed circuit board 1 with double-sided adhesive tape (not shown) or the like, and can be easily removed. A spacer 4 whose thickness is almost the same as that of EL module 2 is installed around the EL module 2.
is attached onto the printed circuit board 1 with double-sided adhesive tape or the like. A surface sheet 5 made of polyester film or the like is formed on the upper part of the EL module 2 and the spacer 4 with a transparent part 50 formed in a part corresponding to the EL module 2 and a non-transparent part 51 in the other part.
are attached using double-sided adhesive tape. FIG. 3 shows a partial cross-sectional view of a display device A formed by laminating and attaching these.
Since the thickness is 3 mm or less, the display device A is constructed with a thickness of 3 mm or less even including the printed circuit board 1, top sheet 5, etc.

(g) Effects of the invention As mentioned above, this invention utilizes an EL module, which makes it possible to replace incandescent light bulbs or LED
It is possible to construct an ultra-thin display device compared to one using lamps, and if used in display panels of electronic devices (equipment), it will greatly contribute to miniaturization. Furthermore, the structure is very effective in terms of manufacturing and maintenance because the EL module can be easily attached and detached using a detachable conductive connecting member. Furthermore, because of the characteristics of the EL module, such as uniformity of light emission and absence of heat generation, it is possible to construct a display device that is superior to conventional ones in these respects. Furthermore, it is also possible to construct an aggregate display device in which various display surfaces are arranged together by simply changing the shape of the light-transmitting portion of the top sheet.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a display device according to an embodiment of this invention, Fig. 2 is a perspective view of the same EL module,
FIG. 3 is a partial sectional view of the display device. 1... Printed circuit board, 1a, 1b... Through hole, 10... Terminal section, 2... EL module,
20... Light emitting part, 21... Electrode lead-out part, 21a,
21b... Electrode, 21c, 21d... Terminal hole, 3
a, 3b... Connection pin, 3c... Elastic piece, 3d...
...Hook, 4...Spacer, 5...Top sheet,
50... Transparent part, 51... Non-transparent part.

Claims (1)

[Scope of utility model registration request] A printed circuit board having a terminal portion is provided, and sheet-shaped electroluminescent modules are placed at predetermined multiple locations on this printed circuit board, and sheet-like electroluminescent modules are placed around each electroluminescent module in a thickness approximately equal to that of the electroluminescent module. The electroluminescent module is attached to the terminal portion of the printed circuit board by a removable conductive connecting member at the electrode lead-out portion of the electroluminescent module. A display device comprising: a surface sheet having a light-transmitting portion formed at a corresponding portion to the electroluminescent module; .