Lamp capable of monitoring direct-current voltage to control lens power-off retraction

Abstract

The utility model discloses a lamp capable of monitoring direct current voltage to control power-off retraction of a lens, which comprises a control module, a driving module controlled by the control module and a motor driven by the driving module, the motor drives a light-emitting lens to stretch out and draw back, and the control module and the driving module are powered by a constant-voltage direct current power supply module. When the direct-current voltage detection module detects that the output voltage of the constant-voltage direct-current power supply module is lower than a preset value, power supply of the control module and the driving module is switched to the energy storage module, the motor drives the light-emitting lens to retract into the lamp, and the energy storage module is charged by the constant-voltage direct-current power supply module. The output voltage of the constant-voltage direct-current power supply module is detected through the direct-current voltage detection module, when the control module finds that the output voltage is lower than a preset value, it is considered that the lamp is powered off, the energy storage module is automatically switched to continue to supply power to the control module and the driving module, and the driving module is controlled to drive the motor to drive the light emitting lens to retract into the lamp. Therefore, the light-emitting lens is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to stage lamp technical field more specifically, it is a kind of lamp for monitoring direct current voltage control lens power-off retraction. BACKGROUND

[0002] In the process of using lamp, when operator directly makes equipment power-off, the last position of lens can be completely protruding outside lamp or half protruding outside lamp;When this situation occurs, if the disassembly, movement or packing of lamp are carried out, lens is easily damaged due to collision, which greatly shortens the service life of lamp, how to control after the power-off of lamp, so that lens is automatically retracted inside lamp, become the technical problem to be solved by the person skilled in the art. CONTENT OF UTILITY MODEL

[0003] The utility model provides a kind of lamp for monitoring direct current voltage control lens power-off retraction to overcome the at least one defect described in the prior art, can automatically retract light-emitting lens inside lamp after the power-off of lamp, effectively protects light-emitting lens.

[0004] To solve the above technical problems, the technical scheme adopted by the utility model is as follows: a kind of lamp for monitoring direct current voltage control lens power-off retraction, including control module, the drive module controlled by the control module and motor driven by the drive module, the motor drives light-emitting lens telescoping, the control module, the drive module is powered by constant voltage direct current power supply module, when direct current voltage detection module detects the output voltage of the constant voltage direct current power supply module is lower than preset value, the power supply of the control module, the drive module is switched to energy storage module, and the motor drives the light-emitting lens retract inside lamp, the energy storage module is charged by the constant voltage direct current power supply module.

[0005] The lamp for monitoring direct current voltage control lens power-off retraction detects the output voltage of the constant voltage direct current power supply module by direct current voltage detection module, when the control module finds that its output voltage is lower than preset value, considers that lamp is powered off, automatically switches to the energy storage module to continue to power the control module, the drive module, and controls the drive module to drive the motor to drive light-emitting lens retract inside lamp, to realize the protection of the light-emitting lens, avoid colliding the light-emitting lens in the process of disassembly, movement or packing of lamp.

[0006] Further, the constant voltage direct current power supply module is connected with the energy storage module, the control module and the drive module after passing through anti-reverse module.Electric current can effectively prevent the energy storage module from powering the control module and the drive module when the anti-reverse module is powered, and waste electric energy.

[0007] Further, the anti-reverse module is a diode module. The diode module has simple structure and low cost.

[0008] Further, the constant-voltage direct-current power supply module is a switching power supply connected with the mains. That is, the lamp is powered by the mains when it is normally working, so that it can work for a long time.

[0009] Further, the energy storage module includes an energy storage capacitor. The energy storage capacitor can be used for temporary power supply, and there is no risk of battery explosion, so that the safety requirements can be effectively avoided.

[0010] Further, the constant-voltage direct-current power supply module is connected with the ground through the anti-surge resistor and the energy storage capacitor in sequence. The anti-surge resistor can reduce the current when the energy storage capacitor is initially charged, so as to avoid damage to the circuit caused by excessive current impact.

[0011] Further, a fuse is arranged between the constant-voltage direct-current power supply module and the anti-surge resistor, and an anti-reverse diode is arranged in parallel with the anti-surge resistor and the energy storage capacitor to prevent reverse connection between the energy storage module and the constant-voltage direct-current power supply module. When the constant-voltage direct-current power supply module and the anti-surge resistor are correctly connected, the current bypasses the anti-reverse diode. When the energy storage module and the constant-voltage direct-current power supply module are reversely connected, the current flows through the anti-reverse diode, and the fuse is melted due to excessive current, so that damage to other elements on the circuit can be avoided.

[0012] Further, the direct-current voltage detection module includes two series-connected voltage dividing resistors, the constant-voltage direct-current power supply module is connected with the ground through the two series-connected voltage dividing resistors, one end of the two voltage dividing resistors connected with each other is connected with the control module, and the one end is connected with the ground through at least one voltage stabilizing diode and / or connected with a preset voltage. The voltage dividing resistors can reduce the output voltage of the direct-current voltage detection module and send it to the control module for detection. The one end of the two voltage dividing resistors connected with each other is connected with the ground through at least one voltage stabilizing diode, so that the detection voltage sent to the control module can be prevented from being less than zero. The one end of the two voltage dividing resistors connected with each other is connected with the preset voltage through at least one voltage stabilizing diode, so that the detection voltage sent to the control module can be prevented from being greater than the preset voltage, thereby avoiding abnormal detection or damage to the control module.

[0013] Further, a filter resistor is arranged between the one end of the two voltage dividing resistors connected with each other and the control module, and a filter capacitor is connected with the ground. The filter resistor and the filter capacitor together realize filtering, so that the detection voltage sent to the control module is more stable, and the control module cannot be mistakenly triggered due to occasional voltage fluctuation of the direct-current voltage detection module.

[0014] Further, the preset value is a value between 80% and 50% of the rated voltage of the constant-voltage DC power supply module, that is, when the DC voltage detection module detects that the output voltage of the constant-voltage DC power supply module is reduced to a value between 80% and 50% of the rated voltage, the control module controls the energy storage module to supply power to the control module and the driving module, without waiting for the constant-voltage DC power supply module to be completely powered off. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Fig. 1 is a schematic structural diagram of the principle of monitoring the DC voltage to control the lens to be powered off and retracted according to the present application.

[0016] Figure 2 Fig. 2 is a schematic structural diagram of the light-emitting lens extending out of the lamp and retracting into the lamp according to the present application.

[0017] Figure 3 Fig. 3 is a circuit schematic diagram of the energy storage module according to the present application.

[0018] Figure 4 Fig. 4 is a circuit schematic diagram of the DC voltage detection module according to the present application.

[0019] In the drawings:

[0020] 100, control module; 200, light-emitting lens; 300, constant-voltage DC power supply module; 400, DC voltage detection module; R1, voltage dividing resistor; D2, voltage stabilizing diode; R3, filter resistor; C1, filter capacitor; 500, energy storage module; C2, energy storage capacitor; R4, energy discharge resistor; NTC, surge protection resistor; FUSE, fuse; D3, anti-reverse diode; 600, anti-reverse module; 700, motor; 800, driving module; 910, lamp holder; 920, arm; 930, case. DETAILED DESCRIPTION

[0021] The drawings are only used for illustrative description and cannot be understood as a limitation of the present application; in order to better illustrate the present embodiment, some components in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationship described in the drawings is only used for illustrative description and cannot be understood as a limitation of the present application.

[0022] As Figure 1 , Figure 2The utility model provides a kind of monitoring DC voltage control lens power-off retraction's lamp, including control module 100, the drive module 800 controlled by the control module 100 and motor 700 driven by the drive module 800, the motor 700 drives light lens 200 telescoping, the control module 100, the drive module 800 are powered by constant voltage DC power module 300, when DC voltage detection module 400 detects the output voltage of the constant voltage DC power module 300 is lower than preset value, the power supply of the control module 100, the drive module 800 switches to energy storage module 500, and the motor 700 drives light lens 200 retract inside lamp, the energy storage module 500 is charged by the constant voltage DC power module 300.

[0023] The monitoring DC voltage control lens power-off retraction's lamp detects the output voltage of the constant voltage DC power module 300 by DC voltage detection module 400, when the control module 100 finds that its output voltage is lower than preset value, consider that lamp power-off, automatically switch to the energy storage module 500 continues to power the control module 100, the drive module 800, and control the drive module 800 drives the motor 700 drives light lens 200 retract inside lamp, to realize the protection of light lens 200, avoid colliding light lens 200 in the process of lamp disassembly, movement or boxing.

[0024] Generally, track, slide rail or guide column is arranged in the lamp, light lens 200 is slidably arranged on it, the motor 700 moves light lens 200 by synchronous belt, or the motor 700 directly drives light lens 200 to move using screw rod.

[0025] In the embodiment, the lamp includes lamp head 910 for projecting light, arm 920 for supporting the rotation of lamp head 910 and cabinet for supporting the rotation of arm 920, and light lens 200 is movably installed near the light outlet of lamp head 910.

[0026] In the preferred embodiment of the utility model, the constant voltage DC power module 300 is connected with the energy storage module 500, the control module 100 and the drive module 800 after passing through anti-reverse module 600. The anti-reverse module 600 can effectively prevent the energy storage module 500 from supplying power to the control module 100 and the drive module 800, and the current is supplied to the constant voltage DC power module 300 in reverse, wasting electric energy.

[0027] In the embodiment, the constant-voltage direct-current power supply module 300 is connected with the energy storage module 500, the control module 100 and the driving module 800 through the anti-reverse module 600.

[0028] In the preferred embodiment of the utility model, the anti-reverse module 600 is a diode module.

[0029] In other embodiments, the anti-reverse module 600 can also be a field effect tube.

[0030] In the embodiment, the anode of the diode module is connected with the constant-voltage direct-current power supply module 300, and the cathode is connected with the energy storage module 500, the control module 100 and the driving module 800.

[0031] In the preferred embodiment of the utility model, the constant-voltage direct-current power supply module 300 is a switching power supply connected with commercial power.

[0032] In the preferred embodiment of the utility model, the energy storage module 500 includes an energy storage capacitor C2.

[0033] In the embodiment, the energy storage module 500 includes two parallel energy storage capacitors C2.

[0034] Preferably, the energy storage capacitor C2 is also connected in parallel with a discharge circuit, such as a discharge resistor R4.

[0035] In other embodiments, the energy storage module 500 can also include a rechargeable battery.

[0036] As Figure 3 In the preferred embodiment of the utility model, the constant-voltage direct-current power supply module 300 is connected with the ground through the anti-surge resistor NTC and the energy storage capacitor C2 in sequence.

[0037] Preferably, the anti-surge resistor NTC is an NTC resistor.

[0038] In the preferred embodiment of the utility model, the fuse FUSE is further arranged between the constant-voltage direct-current power supply module 300 and the anti-surge resistor NTC, the anti-reverse diode D3 for preventing reverse connection between the energy storage module 500 and the constant-voltage direct-current power supply module 300 is arranged in parallel with the anti-surge resistor NTC and the energy storage capacitor C2. When the constant-voltage direct-current power supply module 300 and the anti-surge resistor NTC are correctly connected, the current bypasses the anti-reverse diode D3, when the energy storage module 500 and the constant-voltage direct-current power supply module 300 are reversely connected, the current flows through the anti-reverse diode D3, and the fuse FUSE is fused due to excessive current, so that damage of other elements on the circuit can be avoided.

[0039] In the embodiment, the anode of the anti-reverse diode D3 is directly or indirectly grounded, and the cathode is directly or indirectly connected to the constant-voltage direct-current power supply module 300.

[0040] As Figure 4 In the preferred embodiment of the utility model, the direct-current voltage detection module 400 comprises two series-connected voltage dividing resistors R1, the constant-voltage direct-current power supply module 300 is grounded after passing through the two series-connected voltage dividing resistors R1, one end of the two voltage dividing resistors R1 connected to each other is connected to the control module 100, and is simultaneously grounded and / or connected to a preset voltage through at least one voltage stabilizing diode D2. The voltage dividing resistor R1 can reduce the output voltage of the direct-current voltage detection module 400 and send it to the control module 100 for detection, one end of the two voltage dividing resistors R1 connected to each other is grounded through at least one voltage stabilizing diode D2, so that the detection voltage sent to the control module 100 can be prevented from being less than zero, at least one voltage stabilizing diode D2 is connected to the preset voltage, so that the detection voltage sent to the control module 100 can be prevented from being greater than the preset voltage, thereby avoiding abnormal detection or damage of the control module 100.

[0041] In the embodiment, when the constant-voltage direct-current power supply module 300 is normally working, the two voltage dividing resistors R1 divide the output voltage of 36V of the constant-voltage direct-current power supply module 300 to 3.3V and then send it to the control module 100.

[0042] Preferably, one end of the two voltage dividing resistors R1 connected to each other is connected to the cathodes of the two voltage stabilizing diodes D2, the anodes of the voltage stabilizing diodes D2 are grounded, one end of the two voltage dividing resistors R1 connected to each other is further connected to the anode of another voltage stabilizing diode D2, and the cathode of the other voltage stabilizing diode D2 is connected to the preset voltage of 3.3V.

[0043] In the preferred embodiment of the utility model, one end of two voltage dividing resistors R1 is connected with the control module 100, and a filter resistor R3 is arranged between the two voltage dividing resistors R1 and the control module 100, and is grounded through a filter capacitor C1. The filter resistor R3 and the filter capacitor C1 together realize filtering, so that the detection voltage sent to the control module 100 is more stable, and the control module 100 is not mis-triggered due to occasional voltage fluctuation of the direct current voltage detection module 400.

[0044] In the embodiment, the filter capacitor C1 is connected between the filter resistor R3 and the control module 100.

[0045] In the preferred embodiment of the utility model, the preset value is a value between 80% and 50% of the rated voltage of the constant voltage direct current power supply module 300. That is, when the direct current voltage detection module 400 detects that the output voltage of the constant voltage direct current power supply module 300 decreases to a value between 80% and 50% of the rated voltage, the control module 100 controls the energy storage module 500 to supply power to the control module 100 and the driving module 800, without waiting for the constant voltage direct current power supply module 300 to be completely powered off.

[0046] Preferably, the preset value is 70% of the rated voltage of the constant voltage direct current power supply module 300. The power-off judgment of the constant voltage direct current power supply module 300 is more accurate, and the judgment time is relatively shorter, so that the energy storage module 500 cannot be completely retracted into the lamp due to over-release of the electric quantity.

[0047] In other embodiments, the preset value can also be 0.

[0048] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments are not enumerated. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.

Claims

1. A lamp fixture that monitors DC voltage to control lens retraction upon power failure, characterized in that, The system includes a control module (100), a drive module (800) controlled by the control module (100), and a motor (700) driven by the drive module (800). The motor (700) drives the light-emitting lens (200) to extend and retract. The control module (100) and the drive module (800) are powered by a constant voltage DC power supply module (300). When the DC voltage detection module (400) detects that the output voltage of the constant voltage DC power supply module (300) is lower than a preset value, the power supply of the control module (100) and the drive module (800) is switched to the energy storage module (500), and the motor (700) drives the light-emitting lens (200) to retract into the lamp. The energy storage module (500) is charged by the constant voltage DC power supply module (300).

2. The lamp fixture for monitoring DC voltage and controlling lens retraction upon power failure as described in claim 1, characterized in that, The constant voltage DC power supply module (300) is electrically connected to the energy storage module (500), the control module (100) and the drive module (800) after passing through the anti-reverse module (600).

3. The lamp for monitoring DC voltage and controlling lens retraction upon power failure according to claim 2, characterized in that, The anti-reverse module (600) is a diode module.

4. The lamp for monitoring DC voltage and controlling lens retraction upon power failure according to claim 1, characterized in that, The constant voltage DC power supply module (300) is a switching power supply and is connected to the mains power.

5. The lamp fixture for monitoring DC voltage and controlling lens retraction upon power failure according to claim 1, characterized in that, The energy storage module (500) includes an energy storage capacitor (C2).

6. The lamp for monitoring DC voltage and controlling lens retraction upon power failure according to claim 5, characterized in that, The constant voltage DC power supply module (300) is grounded after passing through the surge protection resistor (NTC) and the energy storage capacitor (C2) in sequence.

7. The lamp for monitoring DC voltage and controlling lens retraction upon power failure according to claim 6, characterized in that, A fuse is also provided between the constant voltage DC power supply module (300) and the surge protection resistor (NTC). The surge protection resistor (NTC) and the energy storage capacitor (C2) are both connected in parallel with a reverse protection diode (D3) to prevent reverse connection between the energy storage module (500) and the constant voltage DC power supply module (300).

8. The lamp fixture for monitoring DC voltage and controlling lens retraction upon power failure according to claim 1, characterized in that, The DC voltage detection module (400) includes two series-connected voltage divider resistors (R1). The constant voltage DC power supply module (300) is grounded through the two series-connected voltage divider resistors (R1). One end of the two voltage divider resistors (R1) is connected to the control module (100), and is also grounded and / or connected to a preset voltage through at least one Zener diode (D2).

9. The lamp fixture for monitoring DC voltage and controlling lens retraction upon power failure according to claim 8, characterized in that, A filter resistor (R3) is also provided between the two voltage divider resistors (R1) connected to each other and the control module (100), and is grounded through a filter capacitor (C1).

10. The lamp for monitoring DC voltage and controlling lens retraction upon power failure according to claim 1, characterized in that, The preset value is a value between 80% and 50% of the rated voltage of the constant voltage DC power supply module (300).

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