JPH0334869Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a pilot lamp device for electrical equipment, and particularly relates to a method for integrating and displaying the total operating time of equipment equipped with the pilot lamp device. This article relates to a pilot lamp device for electrical equipment that can be used.

[Conventional technology]

Generally, in the case of electrical equipment, a pilot lamp device whose lamp part is a neon lamp, light emitting diode, incandescent lamp, etc. is used to indicate whether or not electricity is being supplied reliably from the power source. . This pilot lamp device is installed in an easily visible position on the operation panel or front cover of an electrical device, and lights up when the electrical device is in operation to indicate that fact.

[Problem that the invention attempts to solve]

However, most of the pilot lamp devices that have been used in the past have had a single function of simply indicating the operation of the electrical equipment by lighting them up.

On the other hand, for electrical equipment that operates irregularly, such as portable engine generators, the total operating time of the equipment can be used as a guideline for determining the service life and timing of maintenance inspections. There were many requests for automatic measurement with a simple configuration.

[Purpose of invention]

In view of the situation of the prior art, the present invention provides a pilot lamp for electrical equipment that is integrally attached to a pilot lamp and has a function of displaying the total operating time of the electrical equipment equipped with the pilot lamp. Its purpose is to provide a lamp device.

[Means for solving problems]

Therefore, in the present invention, in a pilot lamp device for electrical equipment, which is equipped with a lamp part that indicates the power supply of the electrical equipment by lighting, the lamp case that holds and houses the lamp part is proportional to the amount of electricity energized. The lamp case is equipped with an hour meter whose indicator moves to display the total energization time, and a display section for displaying the accumulated time of the hour meter is disposed on the front cover of the lamp case. , thereby attempting to achieve the above objective.

[Effect]

Each time an electrical device is powered on, the pilot lamp lights up to indicate that fact. On the other hand, the hour meter built into the pilot lamp device operates when the pilot lamp is energized. This operation is performed in proportion to the amount of electricity supplied, so by keeping the current supplied to the hour meter constant, the movement of the index of the hour meter is equal to the total lighting time of the pilot lamp, i.e. The total operating time of the electrical equipment will be displayed in an integrated manner.
This accumulated time is always displayed on the front side of the research device.

[Example of idea]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

First, in FIGS. 1 and 2, numeral 2 indicates a lamp case of a pilot lamp device for electrical equipment. The lamp case 2 is composed of a case body 4 made of resin and formed into a generally cylindrical shape as a whole, and a lens cover 6 as a front cover which has a predetermined thickness and is formed into a substantially disk shape. This lens cover 6
is made of a transparent or translucent resin member. Among these, the case body 4 has a divided structure into a front case 4A located on the left side in FIG. 2 and a rear case 4B on the opposite side of the front case 4A. The structure is such that it is removably fixed and can be easily separated as necessary. As shown in FIG. 2, a shoulder portion 4Aa is formed on the front case 4A.
is fitted into a counterbore-shaped recess 6A formed in the lens cover 6, and the abutting area resulting from this fitting is bonded and sealed with an adhesive.

Further, inside the case body 4, installation holes 8 for arranging components at different levels are formed over the entire area, as shown in FIG. A printed circuit board 10 equipped with electronic elements to be described later and a neon lamp 12 as a lamp section mounted directly on the printed circuit board 10 are disposed in the installation hole 8 as shown in the figure. Here, 14,...,14
1 is a protrusion for resting the printed circuit board, and 16 is a rubber stopper for appropriately fixing the lead wires a and b to the outside. Further, the neon lamp 12
is fixed by a vibration absorbing mount 18.

On the other hand, a neon lamp 12 is provided on the lens cover 6 at a position facing the neon lamp 12.
A circular lens portion 6B with a diamond cut that condenses light from the lens is integrally formed.
Further, a donut-shaped hour meter main body groove 6C with about 5/6 of the entire circumference cut out is formed at a predetermined concentric position on the outer periphery of the lens portion 6B, as shown in FIG.
Further, at the top of the groove 6C in FIG. 3, a communication opening 6D having a key-shaped longitudinal section is formed to connect the groove 6C to the outside.

Further, from the vicinity of the printed circuit board 10 in the installation hole 8 of the case body 4 to the groove 6C of the lens cover 6.
Communication ports 8A, 8A are provided to positions facing both terminal ends 6Ca, 6Ca, and lead wires c, c are extended from the printed board 10 through the respective communication ports 8A. Electrodes 22A, 22A of the hour meter main body 22 as a display section of the hour meter 20, which will be described later, are disposed at the tips of each lead wire c so as to partially protrude into the terminal ends 6Ca, 6Ca of the groove 6C. and fixed with compound 24 and sealed.

Here, an outline of the principle of the hour meter 20 in this embodiment will be explained based on FIG. 4. In FIG. 4, a glass tube 26 having a predetermined inner diameter is filled with, for example, mercury 22 and an electrolyte 30, and electrodes 31,
When a DC voltage is applied between 31, mercury 22 is electrolytically deposited (electrolytic reaction) from the + side to the - side through the electrolytic solution 30, and the electrolytic solution 30 moves from the - side to the + side as shown by arrow P. In this electrolytic reaction, it is known that the amount of a substance (mercury) deposited is proportional to the amount of electricity passed (Faraday's law). this is,
In the end, the moving distance of the electrolytic solution 30 is also proportional to the amount of electricity supplied, and by keeping the flowing current constant, the moving distance of the electrolytic solution 30 is used as an index.
You will be able to know the total energization time.

In this embodiment, the hour meter 20 is formed by applying the above-mentioned principle, and the specific method for forming the hour meter 20 is as follows.

First, in a vacuum, mercury 28 and electrolytic solution 30 (see FIG. 4) are injected into the hour meter body groove 6C from the communication port 6D (see FIG. 2) of the lens cover 6. Then, the communication port 6D is sealed with a pin (not shown), and the air retention space formed at the back of the communication port 6D is heated with a hot stamp (not shown) or the like, thereby closing this space. Further, on the front surface of the lens cover 6, time scales 20B at predetermined intervals are formed in the grooves 6C as shown in FIG.
Print along.

Next, the drive circuit incorporated in the lamp case 2 will be explained based on FIG. 5. In this figure, 12 indicates the neon lamp that was previously operated, and 2
0 indicates the hour meter. And the neon lamp 1
A stabilizing resistor 35 is connected in series to 2, and the circuit of the hour meter 20 is connected in parallel to the series circuit of the stabilizing resistor 35 and the neon lamp 12.

The circuit of the hour meter 20 includes an hour meter body 22 formed in a substantially donut shape inside the lens cover 6, and a parallel connection to the hour meter body 22 in order to maintain a constant voltage between both ends of the hour meter body 22. Furthermore, the cathode side of the Zener diode 36 is connected to one pole of the power supply via the current regulating resistor 38 and the rectifying diode 40, and the anode side of the Zener diode 36 is connected to the other pole of the power supply. Each is connected to a pole. Therefore, the current from the power source flows through the diode 40
The current flowing through the Zener diode 36 is adjusted by the resistor 38, and both ends of the Zener diode 36 are maintained at a predetermined constant voltage.
In other words, a constant voltage is applied between the electrodes 22A and 22A of the hour meter body 22, and the current flowing through the hour meter body 22 is always constant. is expressed by the moving distance of the indicator (electrolyte part) 30 of the hour meter main body 22.

Here, the maximum measurement time of the hour meter 20 (that is,
The maximum scale of time scale 20B is determined by
Since this is done by selecting the value of the resistor 38 and the Zener diode 36, these resistors 38 and the Zener diode 36 constitute a measurement time setting means 42. Further, each of the resistors 35, 38 and diodes 36, 40 in FIG. 5 is installed on the printed circuit board 10 in FIG.

Next, the overall operation of this embodiment will be explained.

First, when the power is turned on and the electrical equipment is activated, the neon lamp 12 that notifies the activation is lit. At the same time, the hour meter 20 installed in parallel with this power source is activated, and a constant current flows through the hour meter main body 22 only while this power source is operating.
The indicator (electrolyte part) 30 moves by a predetermined distance.
Further, the same operation occurs when the next power supply is applied.
Therefore, the index 30 sequentially moves so as to add up the total time during the power drive period.

In this way, since the lamp case 2 of the pilot lamp device, which is always energized from the power supply when the power supply is started, is equipped with the hour meter 20 as described above, it is possible to It can be constructed in a small size and can be installed in an existing pilot lamp device, resulting in an overall low cost. Furthermore, since the hour meter main body 22 is attached to the lens cover 6 of the lamp case 2, there is an advantage that the accumulated time can be determined at a glance from the outside.

On the other hand, predetermined electrical equipment (e.g. generator, electric motor) of the pilot lamp device configured in this way
By installing the system in a computer, the total operating time of the electrical equipment can be shown in analog form.
Therefore, the usage time of electrical equipment, which previously relied on the operator's intuition, can now be shown quantitatively, such as "it has already been in operation for 1,500 hours," which provides a guideline for equipment inspection and parts replacement. becomes clear,
This provides the advantage of thorough maintenance, which ultimately improves the durability of the equipment.
Furthermore, it becomes possible to estimate the lifespan of the equipment in advance, which has the advantage of preventing accidents such as sudden interruption of the production line.

In the above-mentioned embodiment, the groove 6C is formed in the abutment part between the main body case 4 and the lens cover 6 that form the lamp case 2, and the hour meter body is formed in this groove 6C. Without being limited thereto, for example, as shown in FIG. 6, an hour meter main body 46 is formed by filling the aforementioned mercury 28 and electrolyte 30 in a glass tube 44 formed in advance into a substantially donut shape.
may be formed in advance and mounted in the groove 6C of the lens cover 6 in the same manner as described above, thereby improving the productivity of the hour meter main body 46. In addition, although the hour meter bodies 22, 46 are shaped like donuts with a portion cut out here, they may also be shaped into a straight line, a horseshoe shape, or a U-shape depending on the case. Furthermore, in the case where the hour meter main body is formed as a separate body 46 as described above, when this separate body 46 is attached to the lens cover 6, it is also possible to use a cushioning material that absorbs vibrations etc. be. Furthermore, in the above-described embodiment, the hour meter body 22 is integrally incorporated using the outer peripheral portion of the lens cover 6 for the neon lamp 12. The structure may be such that it is separated from the meter body and attached to the front of each pilot lamp device.

[Effect of idea]

As described above, according to the present invention, a time meter display section indicating the total operating time of the equipment is integrated into the display screen of the pilot lamp device that notifies the drive of the electrical equipment by lighting it. As a result, the overall operating time of the device is smaller than when it is equipped separately, and it is always visible from the front, and in addition to the lamp function, the total operating time of the device can be quantitatively and automatically measured. It is possible to provide a practical pilot lamp device for electrical equipment that can integrate and display the total amount of electricity, thereby enabling appropriate maintenance of the equipment.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a sectional view taken along the - line in Fig. 1, Fig. 3 is a sectional view taken along the - line in Fig. 2, Fig. 4 is an explanatory diagram showing the principle of the time meter, and Fig. 5 is a sectional view taken along the - line in Fig. 2. FIG. 1 is an electric circuit diagram of the embodiment, and FIG. 6 is a schematic configuration diagram showing another example of the hour meter main body. 2... Lamp case, 6... Lens cover as a front cover, 12... Neon lamp as a lamp part, 20... Hour meter, 22... Hour meter body as a display part of the hour meter, 30... Index Electrolyte part as.

Claims (1)

[Claims for Utility Model Registration] In a pilot lamp device for electrical equipment, which is equipped with a lamp section that indicates the power supply of the electrical equipment by lighting, the amount of electricity supplied to a lamp case that holds and houses the lamp section. The lamp case is equipped with an hour meter whose indicator moves in proportion to the total energization time and can display the total energization time, and a display section for displaying the accumulated time of the hour meter is arranged on the front cover of the lamp case. Characteristic pilot lamp device for electrical equipment.