CN203690877U - Projector time-delay automatic power-off protection device - Google Patents
Projector time-delay automatic power-off protection device Download PDFInfo
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- CN203690877U CN203690877U CN201420048817.1U CN201420048817U CN203690877U CN 203690877 U CN203690877 U CN 203690877U CN 201420048817 U CN201420048817 U CN 201420048817U CN 203690877 U CN203690877 U CN 203690877U
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- projecting apparatus
- time delay
- automatic power
- protection device
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Abstract
The utility model discloses a projector time-delay automatic power-off protection device, comprising a relay normally open contact J1A, a start switch SB, a relay coil J1 and a resistor R1 which are sequentially connected to the output end of a projector controller A in series, wherein two ends of the resistor R1 are parallelly provided with a projector operation control circuit and an operation protection circuit, two ends of the projector operation control circuit are parallelly provided with a time-delay automatic power-off circuit, and a filtering circuit is connected between the relay coil J1 and the projector operation control circuit. The power-off protection start switch SB is pushed when an operator uses a projector, and the operator can leave after the use of the projector by only using soft shutdown of a remote controller, and the protection device is turned off automatically after the heat dissipation process is completed, thereby eliminating a violation operation of powering off without heat dissipation and a problem of continuous power-on after the projector is turned off. The service lift of the projector can be effectively prolonged after using the projector time-delay automatic power-off protection device, the operation is simple at the same time, and the time is saved.
Description
Technical field
The utility model relates to a kind of power-off protection apparatus, relates in particular to a kind of time delay automatic power-off protection device that projecting apparatus uses that is suitable for.
Background technology
Along with the development of modern education, office technology, the application of projecting apparatus is more and more extensive, and quantity is also more and more.Projecting apparatus belongs to precision instrument, expensive, therefore in use procedure, must operate according to operational procedure, as must could power-off through heat radiation after a while after projecting apparatus shutdown, otherwise can affect its useful life, even causes that bulb bursts.If therefore operator is according to the operation of aforesaid operations code, just must wait until after projecting apparatus dispels the heat completely and could power-off leave, therefore need operator to carry out the wait of certain hour, relatively lose time, therefore use very inconvenient.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of power-off voluntarily after projector radiating, contributes to protect the projecting apparatus time delay automatic power-off protection device of projecting apparatus.
For solving the problems of the technologies described above; the technical solution of the utility model is: projecting apparatus time delay automatic power-off protection device; comprise and be connected in series successively relay normally open contact J1A, the starting switch SB, relay coil J1 and the resistance R 1 that are connected to projecting apparatus controller A output; described resistance R 1 two ends parallel connection is provided with projecting apparatus working control circuit and work protective circuit; described projecting apparatus working control circuit two ends parallel connection is provided with time delay automatic power-off circuit, between described relay coil J1 and described projecting apparatus working control circuit, is connected with filter circuit.
As preferred technical scheme, described projecting apparatus working control circuit comprises the diode D1 that is connected to described resistance R 1 input, the output of described diode D1 is connected in the base stage of triode VT, the emitter of described triode VT is connected with the output of described resistance R 1 by resistance R 2, the collector electrode of described triode VT is serially connected with relay coil J2 and relay normally open contact J2A successively, and the output of described relay normally open contact J2A is serially connected with relay indicating light and resistance R 3 successively, described resistance R 3 is connected with the output of described resistance R 1.
As preferred technical scheme, described relay indicating light is set to red LED 1.
As preferred technical scheme, described work protective circuit comprises the protection capacitor C 1 being connected in parallel between described diode D1 output and described resistance R 1 output.
As preferred technical scheme, described time delay automatic power-off circuit comprises the relay normally-closed contact J2B that is connected to described relay coil J2 output, the output of described relay normally-closed contact J2B is in series with time relay coil KT, and the output of described time relay coil KT is connected with the output of described resistance R 1; Also comprise the time relay coil normally-closed contact KTA being serially connected between described relay normally open contact J1A and described starting switch SB.
As preferred technical scheme, the input of described time relay coil KT is also connected with time delay status indicator lamp, and the output of described time delay status indicator lamp is connected with the input of described resistance R 3.
As preferred technical scheme, described time delay status indicator lamp is set to green LED 2.
As preferred technical scheme, described filter circuit comprises the transformer T that is connected in parallel on described relay coil J1 two ends, the output of described transformer T is connected with diode D2, the output of described diode D2 is connected to the output of described relay coil J2, and the output of described diode D2 is also connected with filter capacitor C2, the output of described ripple capacitor C 2 is connected with the output of described resistance R 1.
As the improvement to technique scheme, the two ends of described starting switch SB are also parallel with latching circuit, and described latching circuit is relay normally open contact J1B.
Owing to having adopted technique scheme, projecting apparatus time delay automatic power-off protection device, comprise and be connected in series successively relay normally open contact J1A, the starting switch SB, relay coil J1 and the resistance R 1 that are connected to projecting apparatus controller A output, described resistance R 1 two ends parallel connection is provided with projecting apparatus working control circuit and work protective circuit, described projecting apparatus working control circuit two ends parallel connection is provided with time delay automatic power-off circuit, between described relay coil J1 and described projecting apparatus working control circuit, is connected with filter circuit; The beneficial effects of the utility model are: operator clicks power-off protection starting switch SB in the time using projecting apparatus; only need be with just leaving after remote controller soft-off after using; heat radiation process finishes rear protector and automatically disconnects, and just after the violation operation of power-off and projecting apparatus soft-off, continues the problem of energising thereby stopped not dispel the heat.After this utility model is used, can effectively extend the useful life of projecting apparatus, simultaneously simple to operate, save time.
Brief description of the drawings
The following drawings is only intended to the utility model to schematically illustrate and explain, does not limit scope of the present utility model.Wherein:
Fig. 1 is the circuit theory diagrams of the utility model embodiment.
Embodiment
Below in conjunction with drawings and Examples, further set forth the utility model.In the following detailed description, only by the mode of explanation, some example embodiment of the present utility model has been described.Undoubtedly, those of ordinary skill in the art can recognize, in the situation that not departing from spirit and scope of the present utility model, can revise described embodiment by various mode.Therefore, accompanying drawing is illustrative with being described in essence, instead of for limiting the protection range of claim.
As shown in Figure 1; projecting apparatus time delay automatic power-off protection device; comprise and be connected in series successively relay normally open contact J1A, the starting switch SB, relay coil J1 and the resistance R 1 that are connected to projecting apparatus controller A output; described resistance R 1 two ends parallel connection is provided with projecting apparatus working control circuit and work protective circuit; described projecting apparatus working control circuit two ends parallel connection is provided with time delay automatic power-off circuit, between described relay coil J1 and described projecting apparatus working control circuit, is connected with filter circuit.
Described projecting apparatus working control circuit comprises the diode D1 that is connected to described resistance R 1 input, the output of described diode D1 is connected in the base stage of triode VT, the emitter of described triode VT is connected with the output of described resistance R 1 by resistance R 2, the collector electrode of described triode VT is serially connected with relay coil J2 and relay normally open contact J2A successively, and the output of described relay normally open contact J2A is serially connected with relay indicating light and resistance R 3 successively, described resistance R 3 is connected with the output of described resistance R 1.Described relay indicating light is set to red LED 1, and when projecting apparatus is normally worked, relay indicating light is bright.
Described work protective circuit comprises the protection capacitor C 1 being connected in parallel between described diode D1 output and described resistance R 1 output, to ensure the normal operation of projecting apparatus working control circuit.
Described time delay automatic power-off circuit comprises the relay normally-closed contact J2B that is connected to described relay coil J2 output, the output of described relay normally-closed contact J2B is in series with time relay coil KT, and the output of described time relay coil KT is connected with the output of described resistance R 1; Also comprise the time relay coil normally-closed contact KTA being serially connected between described relay normally open contact J1A and described starting switch SB.The input of described time relay coil KT is also connected with time delay status indicator lamp, and the output of described time delay time delay status indicator lamp is connected with the input of described resistance R 3.Described time delay status indicator lamp is set to green LED 2.
Described filter circuit comprises the transformer T that is connected in parallel on described relay coil J1 two ends, the output of described transformer T is connected with diode D2, the output of described diode D2 is connected to the output of described relay coil J2, and the output of described diode D2 is also connected with filter capacitor C2, the output of described ripple capacitor C 2 is connected with the output of described resistance R 1.The two ends of described starting switch SB are also parallel with latching circuit, and described latching circuit is relay normally open contact J1B.
The operation principle of the present embodiment is as follows:
When projecting apparatus work, due to triode VT saturation conduction, relay coil J2 closure, relay normally open contact J2A moves closed, because the output voltage of protector is 220V, can ensure the normal work of projecting apparatus.
In the time that projecting apparatus shuts down, triode VT enters cut-off state, the electric current of relay coil J2 is reduced to below operating current, relay normally open contact J2A disconnects, and relay normally-closed contact J2B closed reduction, simultaneously, time relay coil KT energising, now, projecting apparatus is still connected in 220V AC power, in delay cut-off guard mode, in the time that delay time finishes, the contact of time relay coil normally-closed contact KTA disconnects automatically, cut off the path of relay coil J1, its normally opened contact automatically resets, and then power-off, realize the protective effect of projecting apparatus constrained delay auto-breaking.
The present embodiment operator clicks power-off protection starting switch SB in the time using projecting apparatus; only need be with just leaving after remote controller soft-off after using; heat radiation process finishes rear protector and automatically disconnects, and just after the violation operation of power-off and projecting apparatus soft-off, continues the problem of energising thereby stopped not dispel the heat.After this utility model is used, can effectively extend the useful life of projecting apparatus, simultaneously simple to operate, save time.
More than show and described general principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (9)
1. projecting apparatus time delay automatic power-off protection device; it is characterized in that: comprise and be connected in series successively relay normally open contact J1A, the starting switch SB, relay coil J1 and the resistance R 1 that are connected to projecting apparatus controller A output; described resistance R 1 two ends parallel connection is provided with projecting apparatus working control circuit and work protective circuit; described projecting apparatus working control circuit two ends parallel connection is provided with time delay automatic power-off circuit, between described relay coil J1 and described projecting apparatus working control circuit, is connected with filter circuit.
2. projecting apparatus time delay automatic power-off protection device as claimed in claim 1, it is characterized in that: described projecting apparatus working control circuit comprises the diode D1 that is connected to described resistance R 1 input, the output of described diode D1 is connected in the base stage of triode VT, the emitter of described triode VT is connected with the output of described resistance R 1 by resistance R 2, the collector electrode of described triode VT is serially connected with relay coil J2 and relay normally open contact J2A successively, and the output of described relay normally open contact J2A is serially connected with relay indicating light and resistance R 3 successively, described resistance R 3 is connected with the output of described resistance R 1.
3. projecting apparatus time delay automatic power-off protection device as claimed in claim 2, is characterized in that: described relay indicating light is set to red LED 1.
4. projecting apparatus time delay automatic power-off protection device as claimed in claim 2 or claim 3, is characterized in that: described work protective circuit comprises the protection capacitor C 1 being connected in parallel between described diode D1 output and described resistance R 1 output.
5. projecting apparatus time delay automatic power-off protection device as claimed in claim 4, it is characterized in that: described time delay automatic power-off circuit comprises the relay normally-closed contact J2B that is connected to described relay coil J2 output, the output of described relay normally-closed contact J2B is in series with time relay coil KT, and the output of described time relay coil KT is connected with the output of described resistance R 1; Also comprise the time relay coil normally-closed contact KTA being serially connected between described relay normally open contact J1A and described starting switch SB.
6. projecting apparatus time delay automatic power-off protection device as claimed in claim 5; it is characterized in that: the input of described time relay coil KT is also connected with time delay status indicator lamp, and the output of described time delay status indicator lamp is connected with the input of described resistance R 3.
7. projecting apparatus time delay automatic power-off protection device as claimed in claim 6, is characterized in that: described time delay status indicator lamp is set to green LED 2.
8. projecting apparatus time delay automatic power-off protection device as claimed in claim 7; it is characterized in that: described filter circuit comprises the transformer T that is connected in parallel on described relay coil J1 two ends; the output of described transformer T is connected with diode D2; the output of described diode D2 is connected to the output of described relay coil J2; and the output of described diode D2 is also connected with filter capacitor C2, the output of described ripple capacitor C 2 is connected with the output of described resistance R 1.
9. projecting apparatus time delay automatic power-off protection device as claimed in claim 8, is characterized in that: the two ends of described starting switch SB are also parallel with latching circuit, and described latching circuit is relay normally open contact J1B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048817.1U CN203690877U (en) | 2014-01-25 | 2014-01-25 | Projector time-delay automatic power-off protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048817.1U CN203690877U (en) | 2014-01-25 | 2014-01-25 | Projector time-delay automatic power-off protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203690877U true CN203690877U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420048817.1U Expired - Fee Related CN203690877U (en) | 2014-01-25 | 2014-01-25 | Projector time-delay automatic power-off protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203690877U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108770166A (en) * | 2018-05-11 | 2018-11-06 | 沈阳东软医疗系统有限公司 | A kind of X-ray emitter power-off protection control method, device and equipment |
| CN115278187A (en) * | 2022-09-27 | 2022-11-01 | 深圳市橙子数字科技有限公司 | Shutdown control circuit for projector and projector device |
-
2014
- 2014-01-25 CN CN201420048817.1U patent/CN203690877U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108770166A (en) * | 2018-05-11 | 2018-11-06 | 沈阳东软医疗系统有限公司 | A kind of X-ray emitter power-off protection control method, device and equipment |
| CN115278187A (en) * | 2022-09-27 | 2022-11-01 | 深圳市橙子数字科技有限公司 | Shutdown control circuit for projector and projector device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20170125 |
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| CF01 | Termination of patent right due to non-payment of annual fee |