JPH0648343Y2 - Electronic display - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to an electronic display device such as an electronic meter having a flat display element such as a fluorescent display tube.

[Prior art]

As a conventional electronic display device, for example, FIGS.
There is something like the one shown in the figure. In the figure, 1 is a circuit board, 2 is a fluorescent display tube as a flat display element mounted on the surface side of the circuit board 1 by a lead terminal 2a, and 3 is between the circuit board 1 and the fluorescent display tube 2. A pedestal that is interposed and supports the fluorescent display tube 2. The pedestal 3 is fixed to the circuit board 1 by screws 4. Reference numeral 5 is a circuit component attached to the back surface side of the circuit board 1, 6 is a resin case, 7 is a space holding cylinder, and the circuit board 1 is fixed to the resin case 6 with bolts 8 and nuts 9 via the space holding cylinder 7. ing. 10 is a transparent resin cover. To assemble the electronic display device having such a structure, the circuit component 5 is attached to the back surface of the circuit board 1, and the lead terminals of the fluorescent display tube 2 are mounted on the surface of the circuit board 1 via the pedestal 3.
2a is connected to form a circuit unit. After that, the circuit board 1 of this circuit unit is fixed to the resin case 6 with the spacing cylinder 7 interposed, and the resin case 6 is covered with the transparent resin cover 10 to complete the assembly.

[Problems to be solved by the device]

However, in such a conventional electronic display device, since the fluorescent display tube 2 is simply mounted on the pedestal 3, the vibration transmitted from the outside to the resin case 6 is kept in the interval holding cylinder. 7 is transmitted to the circuit board 1 through the circuit board 1 and is transmitted from the circuit board 1 to the fluorescent display tube 2 through the lead terminals 2a thereof. Therefore, the spacing tube 7, the circuit board 1 and the fluorescent tube 7 are vibrated from the outside. The light display tubes 2 swing independently. Therefore, the vibration causes a stress such as a shearing stress in the vertical direction of the lead terminal 2a of the fluorescent display tube 2 shown in FIG. 3, and in particular, the fluorescent display tube 2 whose surface is covered with glass has a large weight. Since the weight is applied to the lead terminal 2a, there is a problem that the lead terminal 2a is disconnected or the solder is peeled off. The present invention was made in view of such conventional problems, and prevents the fluorescent display tube from swinging by itself due to external vibration to prevent disconnection of the lead terminal of the fluorescent display tube. It is an object of the present invention to provide an electronic display device having the above structure.

[Means for Solving the Problems]

In the electronic display device according to this invention, a pair of pedestal portions for holding a space, one end of which is fixed to a case, and a pedestal portion on which an end portion of a large-sized fluorescent display tube is placed are integrally formed. A holder as a support member is used as a component.

[Action]

In the electronic display device according to the present invention, both ends of a large-sized fluorescent display tube are fixedly mounted on a holder, and the pedestal portion formed on the holder is fixed to the case to eliminate the weak point against vibration. Then, the circuit board and the fluorescent display tube are caused to vibrate in the same mode by the vibration transmitted from the outside to the case.

【Example】

The invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the same main part. In FIGS. 1 and 2, the same or equivalent components as those in FIGS. 3 and 4 are designated by the same reference numerals, and duplicate description will be omitted. In the figure, 11 is a holder (supporting member) for the fluorescent display tube 2, and the holder 11 for the fluorescent display tube 2 is provided with a pedestal portion 11a and projecting projections at both ends in the longitudinal direction of the pedestal portion 11a. A pair of wall portions 11b that are locked to the end surface of the tube 2 on which the lead terminals 2a are provided and hold the fluorescent display tube 2, and the circuit board 1 and the case 6 that project from both ends of the pedestal portion 11a. A pair of pedestal portions 11c, which are used to maintain a space between them, are integrally formed. Reference numeral 12 is a through hole formed in the circuit board 1 through which the pillar 11c penetrates. To assemble the electronic display device having the above structure, the holder 11 is inserted into the through hole 12 of the circuit board 1 on which the circuit component 5 is mounted.
The pedestal portion 11c is penetrated, and the circuit board 1 is fixed to the lower surface of the pedestal portion 11a with the screw 13. Then, the pair of wall portions 11b
Place the fluorescent display tube 2 on the pedestal part 11a so as to be sandwiched between the
The lead terminal 2a is connected to the circuit board 1 and the wall portion
11b and the wall surface of the fluorescent display tube 2 are bonded with an adhesive. After that, screw each of the pillars 11c into the resin case 6
Fix by 4 and complete the assembly. In the electronic display device thus assembled, the holder 11 of the fluorescent display tube 2 is directly attached to the resin case 6, and the circuit board 1 is mounted on the pedestal portion 11a of the holder 11 of the fluorescent display tube 2. Since they are fixed, it is possible to suppress the vertical vibration or the horizontal vibration of the fluorescent display tube 2 and to prevent the lead terminal 2a from breaking.

[Effect of device]

As described above, according to the present invention, in the electronic display device having the configuration in which the flat display element is fixed to the case side through the support member, the support member has the flat display element mounted thereon. The pedestal portion to be placed and the pedestal portion extending downward from the pedestal portion and fixed to the case side are integrally formed, so that the electronic display device is external The flat display element and the case vibrate integrally with each other due to the vibration from, so that stress is not applied to the lead terminals of the flat display element and disconnection can be prevented.

[Brief description of drawings]

FIG. 1 is a horizontal cross-sectional view showing an embodiment of an electronic display device according to the present invention, FIG. 2 is an exploded perspective view of the same main portion, and FIG. 3 is a vertical cross-sectional view showing an example of a conventional electronic display device. FIG. 4 and FIG. 4 are sectional views taken along line IV-IV in FIG. DESCRIPTION OF SYMBOLS 1 ... Circuit board, 2 ... Electronic component (fluorescent display tube), 2a ... Lead terminal, 6 ... Case, 11 ... Holder, 11a ... Cradle part, 11b ... Wall part, 11c ... Pillar part.

Claims (1)

[Scope of utility model registration request] 1. An electronic display device in which a flat display element is fixed to a case side via a support member, wherein the support member includes a pedestal portion on which the flat display element is mounted, and the receiving member. An electronic display device, which is formed integrally with a pedestal portion that extends downward from a base portion and is fixed to the case side.