JPS5812098Y2 - Instrument lighting system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lighting device for instruments, and in particular to a lighting device for instruments that is suitable for instruments that require waterproofness, such as instruments for construction vehicles or instruments for ships.

Conventionally, various devices of this type have been proposed. For example, as shown in FIG.
In the structure in which the illumination lamp 3 is attached to the case 1 via the lamp 2, like a normal vehicle instrument lighting device,
Compared to the case where the lighting lamp is directly attached to the case via a lamp socket using the bayonent method, it is more waterproof, but since the socket storage cylinder 12 is attached by crimping, a reliable waterproof effect can be expected. Can not.

As shown in FIG. 1, even if the rubber cover 14 provides a complete waterproofing effect between the socket housing tube 12 and the lamp socket 13, there is a drawback that the waterproofing effect as a whole is insufficient.

Furthermore, in a configuration in which the illumination lamp 3 is exposed inside the case 1 as in the conventional example, the temperature inside the case rises due to the heat generated when the illumination lamp 3 is turned on, causing finger temperature errors, fogging on the windshield, etc. In addition, there were drawbacks such as the breathing effect caused by temperature changes causing flooding.

The present invention was developed in order to eliminate these drawbacks, and it is based on the fact that a dome-shaped filter is usually used in the push-open device of automobile instruments to adjust the color tone and lighting balance of the illumination light. By attaching this type of filter to the instrument case in a watertight manner, it is possible to illuminate the instrument without impairing the waterproofness of the case, and to thermally protect the lamp storage chamber formed by the filter. communicate with the outside air,
An object of the present invention is to provide a lighting device for a meter configured so that the heat generated when an illumination lamp is turned on does not reach the inside of the meter case.

The first embodiment of the instrument illumination device according to the present invention will be described below with reference to FIGS. 2 and 3. Reference numeral 1 indicates an instrument case, a mechanical body 2, a pointer, a dial plate, etc. (not shown), etc. An instruction section is included inside.

3 is a wedge base type lighting lamp; 4 is a lamp socket in which a power supply terminal 6 connected to a power supply line 5 is installed; the lamp 3 is housed in the lamp socket 4 so as to be able to contact the power supply terminal 6; Retained.

7 is a plate, the lamp socket 4 is removably attached to the plate 7 by bayonent connection, and the lamp 3 is housed and held in the lamp socket 4.
is fixed to the case 1 so as to pass through an opening 1a provided at the bottom of the case 1 and be located inside the case.

8 is a dome-shaped transparent filter, which is attached to the case 1.
The case 1 is sealed watertightly by interposing an elastic backing 9 so as to surround the lamp 3 located inside the case 1.
installed on the inner wall of the

Numeral 10 is a screw for fastening the plate 7 and filter 8 together to the case 1.

Further, the flange 41 of the lamp socket 4 is provided with a sulin 41a. In other words, the lamp storage chamber 11 formed by the filter 8 is configured to communicate with the outside air through the slit.

Therefore, in the lighting device configured in this way, case 1
The dome-shaped filter 8 water-tightly attached to the case 1 through an elastic banking 9 allows illumination without impairing the waterproofness of the case 1, and the heat generated by lighting the lamp 3 is absorbed by the lamp chamber 11. Since it communicates with the outside air, it rarely reaches the inside of case 1.

The second embodiment of the present invention shown in FIG.
This shows an example in which an illumination lamp 3 is attached via a lamp socket storage cylinder 12 attached by a crimping means, and the means for attaching a filter 8 to the inside of the bottom surface of the case 1 via a backing 9 is not shown, but the above-mentioned As in the first embodiment, since the fastening is fixed by screws, a description of the mounting means will be omitted.

A third embodiment of the present invention shown in FIG.
A protruding boss 8a is provided on the flange of the filter 8, and the protruding boss 8a is inserted into a series of through holes provided in the backing 9, the case 1, and the plate 7, and the protruding ends of the insertion are heated and melted to form the filter 8 and the plate 7. This shows an example in which the case 1 is fixed to the case 1 via the banking 9.

Furthermore, a fourth embodiment of the present invention shown in FIG. 6 shows an example in which a filter 8 is attached from the outside of the case 1 through a banking 9, and the filter 8 is fastened to the case 1 with screws 10. It is.

Incidentally, in each of the above embodiments, the lamp socket 4 is provided with a sulin 41a to communicate the lamp chamber 11 with the outside air, but other gaps such as the insertion hole for the power supply line 5 of the lamp socket 4 may be used. Of course, you can also measure the ventilation.

As described above, the present invention has an opening 1 provided in the instrument case 1.
an illumination lamp 3 that is removably attached to the case so as to penetrate through a and be exposed from the outside into the case; and an illumination lamp 3 that is attached to the case 1 so as to surround the lamp 3 that is exposed inside the case 1; In the instrument lighting device, the filter 8 is attached to the case 1 through an elastic backing 9 in a watertight manner,
This instrument lighting device is characterized in that outside air can freely enter and exit the lamp chamber 11 surrounded by the filter, and according to the present invention, the lamp chamber 11 is surrounded by the filter, and the lamp chamber 11 is surrounded by the filter. The attached dome-shaped filter 8 allows illumination without impairing the waterproofness of the case 1, and any desired illumination color can be obtained by the color combination of the filter.

Further, according to the present invention, since the lamp chamber 11 formed by the filter 8 is in communication with the outside air, the heat generated when the lamp 3 is turned on is less likely to reach the inside of the instrument, thereby reducing the possibility of misalignment and damage to the windshield. There is no risk of damage caused by heat such as water ingress due to the fogging prevention effect.

Furthermore, according to the present invention, the lamp 3 exhibits practical effects such as being easily replaceable without impairing the waterproofness of the meter.

[Brief explanation of drawings]

Figure 1 is a side sectional view showing the conventional example, and Figure 2 is the first example of the present invention.
3 is a sectional view taken along the line A-A in FIG. 2, FIG. 4 is a side sectional view showing the second embodiment of the present invention, and FIG. 5 is a sectional view of the third embodiment of the present invention. FIG. 6 is a sectional view similar to FIG. 3 showing a fourth embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Instrument case, 1a... Opening, 2... Machine body, 3... Lighting lamp, 4... Lamp socket, 5
...Power supply line, 6...Starting terminal, 7...Plate, 8
...Dome-shaped filter, 9...Elastic banking, 1
0...Screw, 11...Lamp.

Claims (1)

[Scope of utility model registration request] Opening 11 provided in instrument case 1. an illumination lamp 3 that is removably attached to the case so as to penetrate through a and be exposed from the outside into the case; and an illumination lamp 3 that is attached to the case 1 so as to surround the lamp 3 that is exposed inside the case 1; In the instrument lighting device, the filter 8 is watertightly attached to the case 1 via an elastic banking 9, and outside air is freely allowed to enter the lamp chamber 11 surrounded by the filter. An instrument lighting device characterized in that it can be accessed and exited.