CN101839450B - Focusing device of lamp fitting and variable-focus illumination lamp fitting thereof - Google Patents
Focusing device of lamp fitting and variable-focus illumination lamp fitting thereof Download PDFInfo
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- CN101839450B CN101839450B CN2010100444061A CN201010044406A CN101839450B CN 101839450 B CN101839450 B CN 101839450B CN 2010100444061 A CN2010100444061 A CN 2010100444061A CN 201010044406 A CN201010044406 A CN 201010044406A CN 101839450 B CN101839450 B CN 101839450B
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- focusing motor
- direct current
- current focusing
- relay
- reflector
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Abstract
The invention provides a focusing device of a lamp fitting and a variable-focus illumination lamp fitting thereof, which are applicable to the field of focusing control of the lamp fitting. The focusing device comprises a DC focusing motor, a switch module, a safety module and an energy release circuit, wherein a rotating shaft of the DC focusing motor is connected with a lamp fitting reflector,the DC focusing motor is used for driving the reflector to do parallel movement in the axle wire direction of a lamp fitting light source assembly, the switch module and the safety module are sequentially connected in series between the DC power supply output end and the power supply input end of the DC focusing motor, the energy releasing circuit is connected between the power supply input end of the DC focusing motor and the ground, when the switch module is switched off, the induced electromotive force generated by the DC focusing motor is released through the energy release circuit, and the DC focusing motor stops the rotation. The focusing device provided by the invention adopts the energy release circuit for eliminating the induced electromotive force generated by the DC focusing motor so that the DC focusing motor is immediately stopped in instant time when the power supply is cut off, the size of the light spot of the reflector can be accurately controlled, and in addition, the invention has the advantages of simplicity and reliability.
Description
Technical field
The invention belongs to the focusing control field of light fixture, relate in particular to a kind of focus control and variable-focus illumination lamp fitting thereof of light fixture.
Background technology
In some particular surroundings of prior art, such as using a kind of varifocal lighting on the headlight of helicopter, this lighting moves to change the projected area of light fixture by direct current focusing motor-driven reflector.Usually adopt 28V direct current focusing motor, realize above-mentioned functions.
Yet, because the particularity of applied environment, the rotation of motor, and be accompanied by under the high velocity environment and will inevitably produce certain induced electromotive force, when the power switch of light fixture disconnected, induced electromotive force made direct current focusing motor still keep rotating shaft and rotates a certain angle so, and rotating shaft is connecting reflector, cause the big or small restive of projected area hot spot, can't realize accurate light modulation.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of focus control of light fixture, is intended to solve the big or small restive problem of projected area hot spot in the existing variable-focus illumination lamp fitting.
The embodiment of the invention is achieved in that a kind of focus control of light fixture, comprising:
The direct current focusing motor that rotating shaft links to each other with lamp reflector is used for driving described reflector along the parallel movement of axis direction of lamp light source assembly; Be connected on switch module and insurance module between dc power output end and the direct current focusing motor power input successively; And be connected the power input of described direct current focusing motor and the energy release circuit between the ground; Described energy release circuit comprises: relay and resistance; One end of the coil of described relay is connected to the link that described direct current focusing motor is connected with described insurance module; The other end ground connection of the coil of described relay; The common end grounding of described relay, the normal-closed end of described relay is connected to the link that direct current focusing motor is connected with insurance module by described resistance, and the Chang Kaiduan of described relay is unsettled not to be connect; When described switch module disconnected, the induced electromotive force that described direct current focusing motor produces discharged by described energy release circuit, and described direct current focusing motor stops the rotation.
Described focus control, wherein, described insurance module comprises fuse, and an end of described fuse is connected to described switch module, and the other end of described fuse is connected to the power input of described direct current focusing motor.
Based on foregoing, the present invention also provides a kind of variable-focus illumination lamp fitting, comprise: light source assembly, reflector, and the direct current focusing motor that links to each other with described reflector of rotating shaft, be used for the described reflector of driving along the parallel movement of axis direction of described light source assembly, also comprise: switch module and the insurance module of between dc power output end and direct current focusing motor power input, connecting successively; And be connected the power input of described direct current focusing motor and the energy release circuit between the ground; Described energy release circuit comprises: relay and resistance; One end of the coil of described relay is connected to the link that described direct current focusing motor is connected with described insurance module; The other end ground connection of the coil of described relay; The common end grounding of described relay, the normal-closed end of described relay is connected to the link that direct current focusing motor is connected with insurance module by described resistance, and the Chang Kaiduan of described relay is unsettled not to be connect; When described switch module disconnected, the induced electromotive force that described direct current focusing motor produces discharged by described energy release circuit, and described direct current focusing motor stops the rotation.
Described lighting, wherein, described insurance module comprises fuse, and an end of described fuse is connected to described switch module, and the other end of described fuse is connected to the power input of described direct current focusing motor.
Passed through to increase energy release circuit for eliminating the induced potential that direct current focusing motor coil produces in the focus control of light fixture provided by the invention, direct current focusing motor was stopped immediately in the moment of cutting off the electricity supply, can control the size of reflector hot spot accurately, and simple and reliable.
Description of drawings
Fig. 1 is the circuit diagram of the focus control of a kind of light fixture of providing of the embodiment of the invention.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
Usually, variable-focus illumination lamp fitting comprises: light source assembly, and reflector, and the direct current focusing motor that links to each other with reflector of rotating shaft, this direct current focusing motor is used for driving reflector along the parallel movement of axis direction of light source assembly.The focus control that the embodiment of the invention provides adopts energy release circuit that the induced electromotive force that above-mentioned direct current focusing motor produces is discharged, make when switch module and dc source disconnect, direct current focusing motor stops the rotation, and can control the size of reflector hot spot accurately.
In inventive embodiments, focus control comprises: switch module 1, insurance module 2, direct current focusing motor 3, energy release circuit 4 and reflector 5; Wherein, the input of switch module 1 connects dc source; The input of insurance module 2 is connected to the output of switch module 1; The power input of direct current focusing motor 3 is connected to the output of insurance module 2; Reflector 5 is connected with the rotating shaft of direct current focusing motor 3; Energy release circuit 4 is connected between the power input and output of direct current focusing motor 3; When switch module 1 disconnected with dc source, the induced electromotive force that direct current focusing motor 3 produces discharged by energy release circuit 4, and direct current focusing motor 3 stops the rotation immediately, can accurately control the size of reflector 5 hot spots; Particularly, the output shaft of direct current focusing motor 3 is being adorned the mechanism that cam is connected with reflector 5, and the rotation push-and-pull reflector 5 of direct current focusing motor 3 moves forward and backward, and the variation of reflector 5 focuses makes the size of light fixture projected spot change.The accurate location of hot spot is that direct current focusing motor 3 stops the rotation immediately when outage, do not have inertia, the user when being transferred to suitable spot size after the trip switch, not can because of direct current focus motor 3 inertia and spot size is changed.
Fig. 1 shows the circuit of the direct current focusing motor focus control that the embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention, and details are as follows.
The power input of direct current focusing motor 3 is connected to the other end of fuse F1, and the rotating shaft of direct current focusing motor 3 connects reflector 5, controls the size of reflector 5 hot spots by the rotation of direct current focusing motor 3.
In order to illustrate further the focus control that the embodiment of the invention provides, it is as follows now in conjunction with Fig. 1 in detail its operation principle to be described in detail:
When switch S 1 closure, direct current focusing motor M G1 work rotation, the coil L1 of while energy release circuit 4 repeat circuit K1 gets electric, the common port k1-1 of relay K 1 and the normal-closed end K1-2 of relay K 1 disconnection, the current path of resistance R 1 is cut off, and reduces effect; When switch S 1 disconnects, the coil L1 dead electricity of energy release circuit 4 repeat circuit K1, the normal-closed end K1-2 closure of the common port k1-1 of relay K 1 and relay K 1, the induced electromotive force that direct current focusing motor M G1 produces is discharged fast by resistance R 1, normal-closed end K1-2 and common port k1-1, direct current focusing motor M G1 degradedness, stop the rotation at once, thereby reach the purpose of the size of accurate control hot spot.
Focus control that the embodiment of the invention provides the has adopted energy release circuit for eliminating induced potential that produces of direct current focusing motor coil, direct current focusing motor was stopped immediately in the moment of cutting off the electricity supply, can control the size of reflector hot spot accurately, and simple and reliable.
Above-mentioned focus control is applied on the lighting, can form a kind of new variable-focus illumination lamp fitting, comprise: light source assembly, reflector, direct current focusing motor, and switch module and the insurance module of focusing and connecting successively between the motor power input at dc power output end and direct current; And the energy release circuit of between the power input of direct current focusing motor and output, connecting; When switch module disconnected, the induced electromotive force that direct current focusing motor produces discharged by described energy release circuit, and direct current focusing motor stops the rotation.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. the focus control of a light fixture is characterized in that, comprising:
The direct current focusing motor that rotating shaft links to each other with lamp reflector is used for driving described reflector along the parallel movement of axis direction of lamp light source assembly;
Be connected on switch module and insurance module between dc power output end and the direct current focusing motor power input successively; And
Be connected the power input of described direct current focusing motor and the energy release circuit between the ground;
Described energy release circuit comprises:
Relay and resistance;
One end of the coil of described relay is connected to the link that described direct current focusing motor is connected with described insurance module; The other end ground connection of the coil of described relay;
The common end grounding of described relay, the normal-closed end of described relay is connected to the link that direct current focusing motor is connected with insurance module by described resistance, and the Chang Kaiduan of described relay is unsettled not to be connect;
When described switch module disconnected, the induced electromotive force that described direct current focusing motor produces discharged by described energy release circuit, and described direct current focusing motor stops the rotation.
2. focus control as claimed in claim 1 is characterized in that, described insurance module comprises fuse, and an end of described fuse is connected to described switch module, and the other end of described fuse is connected to the power input of described direct current focusing motor.
3. variable-focus illumination lamp fitting comprises: light source assembly, and reflector, and the direct current focusing motor that links to each other with described reflector of rotating shaft are used for driving described reflector along the parallel movement of axis direction of described light source assembly, it is characterized in that, also comprise:
Switch module and the insurance module of between dc power output end and direct current focusing motor power input, connecting successively; And
Be connected the power input of described direct current focusing motor and the energy release circuit between the ground;
Described energy release circuit comprises:
Relay and resistance;
One end of the coil of described relay is connected to the link that described direct current focusing motor is connected with described insurance module; The other end ground connection of the coil of described relay;
The common end grounding of described relay, the normal-closed end of described relay is connected to the link that direct current focusing motor is connected with insurance module by described resistance, and the Chang Kaiduan of described relay is unsettled not to be connect;
When described switch module disconnected, the induced electromotive force that described direct current focusing motor produces discharged by described energy release circuit, and described direct current focusing motor stops the rotation.
4. variable-focus illumination lamp fitting as claimed in claim 3 is characterized in that, described insurance module comprises fuse, and an end of described fuse is connected to described switch module, and the other end of described fuse is connected to the power input of described direct current focusing motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100444061A CN101839450B (en) | 2010-01-13 | 2010-01-13 | Focusing device of lamp fitting and variable-focus illumination lamp fitting thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100444061A CN101839450B (en) | 2010-01-13 | 2010-01-13 | Focusing device of lamp fitting and variable-focus illumination lamp fitting thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101839450A CN101839450A (en) | 2010-09-22 |
| CN101839450B true CN101839450B (en) | 2013-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010100444061A Expired - Fee Related CN101839450B (en) | 2010-01-13 | 2010-01-13 | Focusing device of lamp fitting and variable-focus illumination lamp fitting thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104427685A (en) * | 2013-08-23 | 2015-03-18 | 深圳市海洋王照明工程有限公司 | Controllable rotary lamp control circuit |
| CN104427684B (en) * | 2013-08-23 | 2019-01-29 | 深圳市海洋王照明工程有限公司 | A kind of automatic rotating lamp control circuit |
| CN110242922A (en) * | 2018-03-08 | 2019-09-17 | 石薇冉 | A kind of lighting device of high-efficient self-generating sustained release electric energy |
| CN114289168B (en) * | 2021-12-29 | 2023-05-09 | 内蒙古超牌新材料股份有限公司 | Method for starting depolymerizer system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350138A (en) * | 2000-02-08 | 2002-05-22 | 波音公司 | Searchlight focusing regulation device |
| CN1694344A (en) * | 2005-04-30 | 2005-11-09 | 蒋富强 | Precision positioning device for common electric machine |
| CN2767274Y (en) * | 2004-06-11 | 2006-03-29 | 李能 | Tiltable headlight for railway locomotive |
| CN1864027A (en) * | 2003-10-06 | 2006-11-15 | 照明管理解决方案有限公司 | Light source using light emitting diodes and an improved method of collecting the energy radiating from them |
-
2010
- 2010-01-13 CN CN2010100444061A patent/CN101839450B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350138A (en) * | 2000-02-08 | 2002-05-22 | 波音公司 | Searchlight focusing regulation device |
| CN1864027A (en) * | 2003-10-06 | 2006-11-15 | 照明管理解决方案有限公司 | Light source using light emitting diodes and an improved method of collecting the energy radiating from them |
| CN2767274Y (en) * | 2004-06-11 | 2006-03-29 | 李能 | Tiltable headlight for railway locomotive |
| CN1694344A (en) * | 2005-04-30 | 2005-11-09 | 蒋富强 | Precision positioning device for common electric machine |
Non-Patent Citations (2)
| Title |
|---|
| 李莉莉 等.基于反电动势测速的直流电动机PWM调速系统的设计.《机床与液压》.2009,第37卷(第8期),第303-305页. * |
| 秦丽莉.如何防止继电器接点被火花损坏.《甘肃科技》.2008,第24卷(第14期),第64-65页. * |
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| CN101839450A (en) | 2010-09-22 |
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