JPH06118373A - Projector device - Google Patents

Abstract

PURPOSE:To exactly decide the remaining quantity of a battery and a change time of a light source lamp, etc., by displaying a use time which becomes a standard of the consumption of the battery and a use time of the light source lamp, in a handy projector device which is driven by the battery, and uses a halogen lamp of large illuminance. CONSTITUTION:The device is constituted of a solar battery 21 placed in the vicinity of a light source of a projecting means, a counting means 23 driven by the solar battery 21, and a display means 24 for displaying a result of counting of the counting means 23. By a simple constitution which dispenses with an external power source, a standard of the remaining quantity of a battery and a exchange time of a light source lamp can be known exactly and easily, and operability is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a battery-powered type handy projector device,
Especially in a handy projector device that uses a halogen lamp with high illuminance as a light source, the remaining time of the battery and the replacement of the light source lamp are displayed by displaying the usage time of the battery and the usage time of the light source lamp. The present invention relates to a projector device having improved operability by enabling accurate determination of time and the like.

[0002]

2. Description of the Related Art Although a rechargeable battery usually has a relatively short usage time of about 30 minutes, a handy projector device driven by a conventional rechargeable battery has a function for determining a battery usage time. Is not provided in particular. Therefore, there is a difficulty that the user cannot easily know the remaining battery level.

Further, since the halogen lamp used as a light source has high illuminance, it not only consumes a large amount of power but also has a relatively short life, but it is also provided with a function relating to information that serves as a guide for replacement timing. Has not been done. Therefore, there is an inconvenience that it is not possible to easily know when to replace the halogen lamp.

[0004]

SUMMARY OF THE INVENTION The present invention solves such a problem in a conventional handy projector device driven by a rechargeable battery or the like,
With a simple configuration, by displaying the usage time of the battery consumption and the usage time of the halogen lamp, it is possible to easily determine the remaining battery power and the replacement time of the halogen lamp to improve operability. An object is to provide a projector device.

[0005]

The present invention firstly displays a solar cell placed in the vicinity of a light source of a projection means, a counting means driven by the solar cell, and a counting result of the counting means. And a display means.

Secondly, in the first projector device, the counting means is configured to be reset when the battery serving as a power source is replaced.

Thirdly, in the first projector device, the counting means is configured to be reset when the lamp, which is a light source, is replaced.

Fourthly, in the first projector device, the display means is composed of a liquid crystal panel.

Fifth, in the first projector device, the display means is configured to display the counting result on a part of the projected image.

[0010]

As described above, in a handy projector device that uses a halogen lamp having a high illuminance as a light source and is driven by a rechargeable battery, the battery usage time is relatively short, such as about 30 minutes. In addition to the need for frequent replacement (charging) and the relatively short life of the light source lamp, it is necessary to know when to replace the lamp in order to maintain its performance. In this invention, in order to detect the usage time of the battery or the lamp for the light source, if a solar cell that operates only for the usage time of the battery is used, the configuration for time measurement is easy, and the usage time of the battery Is characterized in that it uses a time counting means (counter) driven by a solar cell, paying attention to the fact that it is almost equal to the lighting time of the light source lamp.

Specifically, a solar cell to which light from a lamp for a light source is applied is provided inside the handy projector device, and the counter is operated by using this solar cell as a power source to display a display means such as a liquid crystal panel on the screen. By displaying as the usage time, the remaining amount of the battery and the usage time of the light source lamp (as a result, the replacement time of the lamp) can be determined (the invention of claim 1). Further, in order to improve the operability, the counter is reset when the battery as the power source is replaced or the lamp as the light source is replaced (the inventions of claims 2 and 3).

Further, a liquid crystal panel is used as the display means (the invention of claim 4), or the counting result is displayed on a part of the projected image (the invention of claim 5). First, regarding the projector device of the present invention, the external shape and the display example of the display panel will be described.

FIG. 2 is a diagram showing the appearance and display example of an embodiment of the projector apparatus of the present invention.
FIG. 3 is a perspective view, and (2) and (3) are views showing one display example of the display unit. In the figure, 1 is a projector main body, 2
Is a projection lens, and 3 is a display panel.

As shown in the perspective view of FIG. 2A, the handy projector device itself has basically the same structure as the conventional one. However, the projector main body 1 is provided with the display panel 3 at a position where it is easy to see, and on this panel, the operating time (M is Minutes) as shown as "00M" in FIG. 2 (2) as an example. Is abbreviated) is displayed.

Therefore, the operating time of the rechargeable battery can be known from the numerical value of the display panel 3. Instead of this actual usage time, for example, it is possible to subtract the actual usage time from the average usage time of 30 minutes and display it as the current remaining amount of the battery, that is, the available time. . Also, FIG.
The lamp usage time (H is an abbreviation for Hours) can be displayed as shown in (3) as "00H" as an example. Next, the installation position of the solar cell, that is, the use range of the internal light of the projector device will be described.

FIG. 3 is a partially cutaway top view for explaining the utilization range of the internal light in the projector device of the present invention. In the figure, 11 is a projector main body, 1
2 is a halogen lamp, 13 is heat absorbing glass, 14 is LC
D panel, 15 is a projection lens, A is a lamp light utilization area, and B is a lamp back light (infrared) utilization area.

The solar cell is basically a halogen lamp 12 to L, which is a light source, as shown by a thick line A in FIG.
It is provided on the side wall of the optical path to the CD panel 14. However, when the reflector is an infrared transmissive type, the broken line B in FIG.
It is also possible to provide it at a position surrounded by the range shown by, that is, at the rear of the halogen lamp 12.

In the case of the projector device, since the main factor of battery consumption is the lighting of the halogen lamp 12 which is a light source, the lighting time is measured using a solar cell which generates electricity by lighting the halogen lamp 12. According to this structure, the usage time of the battery can be detected without the need to provide a special power source.

[0019]

First Embodiment A projector device of the present invention will be described in detail with reference to the drawings. This embodiment corresponds to the inventions of claims 1 to 5, but particularly shows the embodiment of the invention of claim 1 in detail. The basic operation is common to all the inventions.

FIG. 1 is a circuit diagram showing an embodiment of the main configuration of a display system in a projector device according to the present invention. In the figure, 21 is a solar cell, 22
Is an oscillation circuit, 23 is a counter, 24 is a display panel, and L is light from a light source.

The display system shown in FIG. 1 is operated only when the light source (not shown) is turned on and the light L is applied to the solar cell 21 to generate electricity. That is, when the solar cell 21 generates power, the oscillation circuit 22 operates and a pulse signal is generated.

This pulse signal is given to the counter 23 at the next stage, and the number of pulses is counted. Since the number of pulses is proportional to time, it is detected as the power generation time (corresponding to the time when the battery drives the halogen lamp). In this case, the battery usage time is about 30
Since it is minute and "minute unit", it is preferable to convert the number of pulses and display it in minute unit as shown in FIG. 2 (2).

The time information (for example, the time information converted into minute information) is displayed on the display panel 2 made of liquid crystal, for example.
4 is displayed and displayed on the screen. Since the lighting time of the halogen lamp is "time unit" such as several tens of hours, it is preferable to convert the pulse number and display it in time unit as shown in FIG. 2 (3).

As described above, in the projector device of the present invention, the solar cell 21 performs the power generation operation only when the halogen lamp of the light source is turned on. Therefore, in the display system of FIG.
Solar cell 21 power generation time (halogen lamp drive time)
Can be detected as a measure of the battery usage time, and at the same time, the usage time of the halogen lamp can be detected, so that it becomes possible to determine the replacement time of the lamp.

The above is the embodiment of the invention of claim 1.
Further, by adopting a liquid crystal panel as the display panel 24 shown in FIG. 1, it is possible to display the usage time of the battery or the lamp with a small amount of power from a power source such as a solar cell (claim 4). Invention).

[0026]

Second Embodiment Another embodiment of the projector apparatus of the present invention will be described. The second embodiment corresponds to the inventions of claims 2 and 3.

In the above embodiment, the solar cell 21 placed near the light source of the projection means, the counting means (counter 23) driven by the solar cell 21, and the display means (display) for displaying the counting result of the counting means. The display system of the operating time of the battery and the lamp, which is composed of the panel 24), has been described. In the second embodiment as well, the same display system is premised, and when the battery is replaced, the count value of the usage time is reset so that the usage time of the currently set battery can be accurately detected. The invention of claim 2) is also characterized in that it is possible to accurately determine the replacement time of a lamp for a light source (for example, a halogen lamp) which similarly has a problem of life (invention of claim 3). .

FIG. 4 is a circuit diagram showing another embodiment of the main configuration of the display system of the projector device according to the present invention. The reference numerals in the figure are the same as those in FIG.
Reference numeral 5 is a memory counter, 26 is a memory power supply, and 27 is a reset switch.

In the embodiment shown in FIG. 4, since the memory counter 25 is used as the counting means, the power generation time of the solar cell 21 can be accumulated and stored. The life (replacement time) of the halogen lamp is in units of hours, and it is necessary to retain the information on the lighting time up to that time even when the solar cell 21 is in the non-power generation state.

Therefore, the memory counter 25 is provided with a memory power supply 26 as a backup power supply.
Further, a reset switch 27 is added to reset the memory counter 25.

The reset switch 27 has the following structure, for example. FIG. 5 is a side view of essential parts showing an embodiment of the reset function of the display system of the projector device of the present invention. In the figure, 31 is a halogen lamp, 32 is a socket with a switch, and 33 is a reset switch button.

As shown in FIG. 5, if a socket 32 with a switch having a reset switch button 33 is used, the switch is activated each time the halogen lamp 31 is mounted, and the memory counter 25 of FIG. Will be reset. According to the second embodiment described above, the lighting time (use time) of the halogen lamp 31, which is the light source, is calculated by adding up the lighting times since the last lamp replacement, as shown in FIG. As shown, it is displayed on the display panel in "time units".

Therefore, when the lamp is replaced, the reset operation is not forgotten, the operability is improved, and the lamp is automatically reset, so that the accurate lighting time can be displayed (the invention of claim 3). ). Further, it is obvious that the display system shown in FIG. 4 can also be implemented to detect the usage time of the battery (the invention of claim 2).

In this case, the switch-equipped socket 32 having the reset switch button 33 shown in FIG.
May be provided at the battery mounting position. As a matter of course, it is also possible to use a reset switch that is manually operated.

[0035]

Third Embodiment A third embodiment of the projector apparatus of the present invention will be described. The third embodiment is claim 5.
Corresponding to the invention of. This embodiment is characterized in that the information on the battery usage time and the lamp lighting time is displayed on a part of the projected image.

FIG. 6 is a perspective view of a main part of the projector device of the present invention, showing another embodiment of the display of information on the operating time of the battery and the operating time of the lamp. In the figure, 41 is a projector main body, 42 is a screen, and 43 is a display position of use time information.

If the information on the operating time of the battery and the lighting time of the lamp described in the previous embodiment is displayed at the display position 43 on the screen 42 as shown in FIG. 6, the remaining amount of the battery and the lamp replacement can be achieved. You can easily know the time. In this case, the counting results (battery usage time and lamp lighting time) described with reference to FIGS.
After converting to the pattern image shown in (2) or FIG. 2 (3), it may be projected on the screen 42 from the LCD panel 14 of FIG.

[0038]

According to the first aspect of the present invention, the solar cell placed near the light source of the projection means, the counting means driven by the solar cell, and the display means for displaying the counting result are provided. . Therefore, with a simple configuration that does not require the use of an external power source, it becomes possible to accurately and easily know the target of the battery remaining amount and the replacement timing of the light source lamp, and the operability of the device is improved.

According to a second aspect of the invention, in the projector device according to the first aspect, the counting means is reset when the battery serving as a power source is replaced. Therefore, in addition to the effect of the first aspect of the present invention, the reset operation at the time of battery replacement is not necessary, and the target of the battery remaining amount can be accurately known.

According to the invention of claim 3, in the projector device according to claim 1, the counting means is reset when the lamp, which is the light source, is replaced. Therefore, in addition to the effect of the first aspect of the present invention, the reset operation at the time of replacing the lamp is unnecessary, and the replacement time of the lamp can be accurately known.

According to a fourth aspect of the invention, in the projector device according to the first aspect, the display means is a liquid crystal panel. Therefore, in addition to the effect of the invention of claim 1, it is possible to realize the display means of low power.

According to a fifth aspect of the present invention, in the projector device according to the first aspect, the display means is configured to display the counting result on a part of the projected image. Therefore, in addition to the effect of the first aspect of the invention, it becomes possible to easily display the target of the battery remaining amount, the replacement time of the light source lamp, and the like.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of a main part configuration of a display system in a projector device according to the present invention.

FIG. 2 is a diagram showing an appearance and a display example of an embodiment of the projector apparatus of the present invention.

FIG. 3 is a partially cutaway top view for explaining the range of use of internal light in the projector device of the present invention.

FIG. 4 is a circuit diagram showing another embodiment of the main configuration of the display system of the projector device of the present invention.

FIG. 5 is a side view of essential parts showing an embodiment of the reset function of the display system of the projector device of the present invention.

FIG. 6 is a perspective view of a main part of the projector device according to another embodiment of the present invention, which shows another embodiment of displaying information on the usage time of the battery and the lighting time of the lamp.

[Explanation of Codes] 21 Solar Cell 22 Oscillation Circuit 23 Counter 24 Display Panel 25 Memory Counter 26 Memory Power Supply 27 Reset Switch

Claims (5)

[Claims] 1. A solar cell placed near a light source of the projection means, a counting means driven by the solar cell, and a display means for displaying a counting result of the counting means. Projector device. 2. The projector device according to claim 1, wherein the counting unit is reset when a battery serving as a power source is replaced. 3. The projector device according to claim 1, wherein the counting unit is reset when a lamp, which is a light source, is replaced. 4. The projector device according to claim 1, wherein the display means is a liquid crystal panel. 5. The projector device according to claim 1, wherein the display means is configured to display the counting result on a part of a projected image.