JPS6247689A - Display circuit block - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Technical Field 1] The present invention provides a method for displaying a display element such as a neon lamp when it is turned off.
The present invention relates to a display circuit block built into the switch, which displays the location of the switch in the dark by turning on the α light.

[Background Art] FIG. 5 shows a perspective view of a conventional display circuit block built into this type of switch, and FIG. 6 shows a circuit configuration diagram thereof.

An electric path pattern 22 constituting a circuit is formed on the back surface of the printed circuit board 21, and resistors R, , R2 and a neon lamp Ne for display are mounted on the front surface of the printed circuit board 21. The circuit configuration here is J, t.

The resistor R2 has a configuration in which a series circuit of the resistor R2 and the neon lamp Ne is connected in parallel. In such a conventional method, carbon resistors (with lead wires) R, R2 are used as resistance elements in a printed circuit board 21 or a circuit section formed by insert molding in which a lead plate for electric circuits is embedded, and the circuit section and the lead wires are soldered or crimped. was connected. Therefore, in such a conventional example, there were problems in that the process was complicated, the cost was high, and the size was large.

[Object of the Invention] The present invention has been provided in view of the above-mentioned α, and provides a display circuit block for the purpose of simplifying the manufacturing process, downsizing, and reducing costs.

DISCLOSURE OF THE INVENTION 1 (Structure) The present invention comprises a conductive lead plate for an electric circuit, in which a pair of connection pieces to be connected to the ends of an electronic component are formed facing each other at a distance from both sides, and the lead plate is connected to the lead plate. The present invention is characterized in that an opening through which the pair of connection pieces is exposed is formed in the insert-molded molded body, and an electronic component located within the opening is bridged between the pair of connection pieces.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows a perspective view of a main part of a conductive metal lead plate 1 formed by punching a band-shaped metal lead plate 1, and a circuit pattern is formed with this lead plate 1. It is something that A pair of connection pieces 2 Jlt 2 b, 2 c are provided on both sides of the pattern of the lead plate 1.

2d are integrally formed facing each other at intervals.

Furthermore, a caulking piece 5 having a U-shaped cross section is formed on the lead plate 1 for connection to the neon lamp Ne. FIG. 1 shows a perspective view of a display circuit block A in which this lead plate 1 is insert-molded. The punching process and insert molding of the lead plate 1 will be described later. As shown in FIG. 1, an opening 4 is formed in a molded body 3 in which a lead plate 1 is insert-molded. That is, each connecting piece 2 at 2 b, 2 c is inserted into this opening 4.
.

2d is exposed, and a resistor R.1.2d, which is an electronic component, is connected between the opposing connection pieces 2a, 2b, 2 et 2d. The ends of R2 are bridged on both sides, and the resistors R1゜R2 are connected to the connecting pieces 2 at 2 b, 2 et
2 d. Then, the ends of the resistors R,,R, are connected to the connecting pieces 2 It, 2 b, 2
It is soldered connected to et2d. The resistor used here is a chip resistor or an electronic component such as Melf. Further, the lead wire of the neon lamp Ne is caulked and connected to the caulking piece 5. Note that the electronic components may be attached after the lead plate 1 is insert-molded, or the electronic components may be attached to the lead plate 1 and then insert-molded.

FIGS. 3(a) to 3(c) show the punching process of the long metal lead plate 1, in which the long metal lead plate 1, which is a thin sheet wound into a 7-ply shape, is punched out at a cutting board 7. It is formed by punching out a pattern in the center. As mentioned above, by this punching process, the connecting pieces 2 a, 2 b,
2c, 2dl caulking pieces 5, etc. are formed.

FIGS. 4(a) to 4(c) show that after forming a pattern as described above, the coiled 7-ply lead plate 1 is inserted in a molding machine 8 so as to cover each pattern portion with a molded body 3. This shows the process of molding.

Then, the insert-molded lead plate 1 is wound up with interlayer paper 9 inserted between the layers.

The lead plate 1 for the electric circuit can be constructed into a 7-pipe shape by continuous processing, and the attachment of electronic components can also be processed continuously as in the past, but miniaturization is achieved by converting the carbon resistor into a chip resistor. It is possible.

[Effects of the Invention] As described above, the present invention provides a display circuit block in which electronic components such as resistors and display elements are made into blocks and display is performed by the display elements. forming a pair of connecting pieces to be connected to the ends of the component so as to face each other at a distance from each other from both sides, and forming an opening through which the pair of connecting pieces are exposed in the molded body into which the lead plate is insert-molded; Since the electronic component located within the opening is installed between the pair of connecting pieces, the electronic component can be inserted between the connecting pieces by simply installing the end of the electronic component between the pair of connecting pieces. , you can ensure continuity just by setting it! ! This simplifies the manufacturing process, reduces costs, and also enables miniaturization by positioning electronic components within the openings of the molded body.

[Brief explanation of the drawing]

! @ Figure 1 is a perspective view of the main parts of the lead plate according to the embodiment of the present invention, Figure 2 is a perspective view of the same display circuit block as above, and Figure 3 (a)
~(c) is a diagram showing the same punching process as above, and Figure 4 (
FIG. 5 is a perspective view of a conventional display circuit block, and FIG. 6 is a circuit configuration diagram of the same. 1 is a lead plate, 2 is a connecting piece, 3 is a molded body, and 4 is an opening. Agent Patent Attorney Stone 1) Invasion 7th 1× Figure 2 Figure 3 Figure 5σ゛g Figure 6

Claims (1)

[Claims] (1) In a display circuit block in which electronic components such as resistors and display elements are made into blocks and display is performed by display elements, a connecting piece is connected to the end of the electronic component to a conductive lead plate for the electric circuit. are formed facing each other at a distance from both sides, and an opening is formed in the molded body into which the lead plate is insert-molded, through which the pair of connection pieces are exposed, and the electronic component located within the opening is connected to the pair of connection pieces. A display circuit block characterized in that it is constructed between two halves.