JPH0423268Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to electrical equipment, particularly small equipment such as a rechargeable electric shaver equipped with multiple operation display mechanisms, and the configuration of the display mechanism section. It is related to.

(b) Conventional technology Light-emitting bodies such as light-emitting diodes and lamps are used to display the operating status of devices (in the case of rechargeable electric shavers, they display charging status and battery remaining capacity warnings). When displaying different operating conditions using multiple light emitters, if the mounting positions of the light emitters are close to each other, the display window that should correspond to each light emitter may have a different display window. There was a risk that light from the light emitter would enter the device, giving the user the illusion that the displayed content was different from the operating state of the device.

In order to solve this problem, a method in which a partition wall is provided for each light emitting element is disclosed in Japanese Utility Model Application Publication No. 135791/1981, but the technique of this publication requires a special installation room for the light emitting element. This makes the structure complicated and the installation work troublesome. Moreover, when the light emitter is directly attached to the printed circuit board, the partition wall cannot be integrally formed on the printed circuit board.

(c) Problems to be solved by the invention The problem to be solved by the invention is to create a simple structure that can appropriately transmit each light from a light emitter directly attached to a printed circuit board to its corresponding display window. This is achieved through composition.

(d) Means for Solving the Problems The display device for electrical equipment according to the present invention includes an equipment case that has a plurality of insertion holes and has light-shielding protrusions located between the insertion holes that are integrally formed from the inner wall. , a lamp cover having a light-transmissive protrusion that fits into the insertion hole and a through hole through which the light-shielding protrusion is inserted; and a lamp cover that is housed inside the case and abuts one end of the light-shielding protrusion. The light-emitting element is electrically connected to the circuit board and is mounted and fixed in a space surrounded by the light-shielding protrusion, the lamp cover, and the circuit board.

Furthermore, an elastic protrusion is formed on the inner wall of the case in accordance with the size of the lamp cover, and the lamp cover is held by the elastic protrusion.

(E) Function Each light emitting body is located in the storage space formed by the light-shielding protrusion, the lamp cover, and the circuit board, and each light beam reliably passes only through the corresponding light-transmitting protrusion. Further, the lamp cover is reliably held on the inner wall of the case with a simple structure by the elastic projections.

(F) Embodiment The display device for electrical equipment of the present invention will be described in detail below with reference to an embodiment shown in FIGS. 1 to 3.

Reference numeral 1 denotes an ABS resin case constituting the outer shell of an electric shaver, etc., and has three approximately square-shaped insertion holes 2, 3, and 4.
Light-shielding protrusions 5 and 6 are integrally provided vertically from the inner wall of the case 1 between the two.

7 is a lamp cover made of transparent resin, such as acrylic resin, and is inserted into the insertion hole 2 of the case 1;
3 and 4, and rectangular through holes 11 and 12 through which the light shielding projections 5 and 6 of the case 1 pass. On the inner wall of the case 1, the light shielding protrusion 5,
Six elastic protrusions 13, 14, 1 surround 6.
5, 16, 17, and 18 are exactly the lamp cover 7.
They are arranged on the sides of a rectangle at intervals that match the perimeter of the rectangle. The lamp cover 7
are these elastic protrusions 13, 14, 15, 16, 1
It is fitted and fixed to the inner wall of the case 1 by means of 7 and 18.

19, 20, 21 are the light-transmitting projections 8, 9,
It is a light emitting diode as a light emitting body provided corresponding to each of the 10 colors, for example, the existing red, blue,
It is possible to use green light emitting diodes.
These light emitting diodes 19, 20, 21 are buried side by side in the circuit board 22, electrically connected by soldering on the back side, and are arranged to face the light transmitting protrusions 8, 9, 10, respectively. and is arranged inside the case 1. The distance between the substrate 22 and the case 1 is maintained by the light-shielding protrusions 5 and 6 coming into contact with the substrate 22, and a space is formed between the inner wall of the case 1, the light-shielding protrusions 5 and 6, and the substrate 22. . Although not described in detail, a control circuit 23 is electrically connected to the substrate 22.

In the device having the above configuration, the lamp cover 7 has its through holes 11 and 12 penetrate the light shielding protrusions 5 and 6 on the inner wall of the case 1, and then the elastic protrusions 13, 14, 15, 16, 17, 18. It can be attached with a press fit between the two. The light-emitting diodes 1 are mounted on the light-transmitting protrusions 8, 9, and 10 of the lamp cover 7.
The board 22 is installed in the case 1 with the boards 9, 20, and 21 facing each other. light emitting diode 1
The light from 9, 20, and 21 is diffused light, and there is not only a component that travels straight but also a component that travels in the direction of the adjacent light-transmitting projections, but this component corresponds to one of the light-shielding projections 5 and 6. Since the course of the light is changed over time, the light that the light-transmitting protrusions 8, 9, and 10 receive is only the light from the corresponding light-emitting diodes 19, 20, and 21, respectively.

(g) Effects of the invention As described above, the display device for electrical equipment according to the invention includes an equipment case that has a plurality of insertion holes and has light-shielding protrusions located between the insertion holes that are integrally formed from the inner wall. , a lamp cover having a light-transmissive protrusion that fits into the insertion hole and a through hole through which the light-shielding protrusion is inserted; and a lamp cover that is housed inside the case and abuts one end of the light-shielding protrusion. and a light-emitting body electrically connected to the circuit board and mounted and fixed in a space surrounded by the light-shielding protrusion, the lamp cover, and the circuit board, and the light-emitting body In addition to being able to form a storage space with a very simple configuration, the light from each light emitting body can be ensured to pass only through the corresponding light-transmitting protrusion, which has the effect of increasing the reliability of the display device. be.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the main parts of the device showing the lamp cover and light emitting body installed, Figure 2 is an exploded perspective view of Figure 1, and Figure 3 is a perspective view of the inner wall of the device showing the lamp cover installed. It is a diagram. 1... Case, 2, 3, 4... Insertion hole, 5, 6
...Light-shielding protrusion, 8,9,10...Light-transmitting protrusion, 7...Lamp cover, 19,20,21...
Luminous body.

Claims (1)

[Claims for Utility Model Registration] (1) A device case having a plurality of insertion holes and having light-shielding protrusions formed integrally from the inner wall between the insertion holes, and a light-transmitting device that fits into the insertion holes. Has a sex process,
a lamp cover having a through hole through which the light shielding protrusion is inserted; a circuit board housed inside the case and abutting one end of the light shielding protrusion; and a circuit board electrically connected to the circuit board and having the light shielding protrusion inserted therethrough; A display device for electrical equipment consisting of a light emitting body mounted and fixed in a space surrounded by a protrusion, a lamp cover, and a circuit board. (2) Claim 1 of the above utility model registration characterized in that an elastic protrusion is formed on the inner wall of the case according to the size of the lamp cover, and the lamp cover is held by the elastic protrusion. display devices for electrical equipment.