CN104062834A - Projector power supply system - Google Patents
Projector power supply system Download PDFInfo
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- CN104062834A CN104062834A CN201410253484.0A CN201410253484A CN104062834A CN 104062834 A CN104062834 A CN 104062834A CN 201410253484 A CN201410253484 A CN 201410253484A CN 104062834 A CN104062834 A CN 104062834A
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- power supply
- projector
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Abstract
The invention provides a projector power supply system. The projector power supply system comprises a switching circuit, a solid lamp source drive circuit and a solid lamp source module. The switching circuit comprises a voltage reduction type power factor controller which is used for receiving an alternating-current power supply and outputting a first power supply according to the alternating-current power supply. The solid lamp source drive circuit is connected with the switching circuit and directly receives the first power supply from the voltage reduction type power factor controller. The solid lamp source drive circuit outputs a drive power supply according to the first power supply. The solid lamp source module is connected with the solid lamp source drive circuit and receives the drive power supply from the solid lamp source drive circuit.
Description
Technical field
The invention relates to a kind of power-supply system; Particularly, the invention relates to a kind of projector power-supply system.
Background technology
Along with the evolution of projection arrangement technology, user is the increase in conjunction with Mobile Commerce demand to the output of large scale picture, correspondingly also corresponding raising of the requirement of the volume to projection arrangement and power supply power consumption.Therefore, no matter be size, the usefulness of projection arrangement, and even the space of installing projection arrangement, all demand projection arrangement being used along with market is highlighted day by day.
In projection arrangement, mostly must configure power factor correction circuit, it is relevant with the useful power of projection arrangement actual operation.But, with current common projection arrangement, the power factor correction circuit that existing projection arrangement configures is receiving after AC power, there is the higher problem of output voltage, thereby must in circuit, set up DC-to-DC converter, to reduce the driving circuit of voltage to rear class, so just can provide and be suitable for the required voltage of driving circuit.Thing followed problem is, the DC-to-DC converter of setting up certainly will cause the loss on power, causes the waste of overall efficiency, and therefore, with reference to the current practice, the design of existing projection arrangement still haves much room for improvement.
Summary of the invention
The object of the present invention is to provide a kind of projector power-supply system, to improve the whole efficiency of projector's power-supply system.
The object of the present invention is to provide a kind of projector power-supply system, with the volume of reduced projection electromechanical source system.
For achieving the above object, the invention provides a kind of projector power-supply system, comprise:
Change-over circuit, has buck power factor controller, in order to receive AC power and to export the first power supply according to this AC power;
Solid state lamp source driving circuit, connects this change-over circuit and directly receives this first power supply from this buck power factor controller, and this solid state lamp source driving circuit is according to this first power supply output driving power;
Solid state lamp source module, connect this solid state lamp source driving circuit and certainly this solid state lamp source driving circuit receive this driving power.
Preferably, this solid state lamp source module has at least one LED lamp source, this projector's power-supply system more comprises power circuit, and this power circuit comprises system power supply circuit and stand-by power circuit, this system power supply circuit and this stand-by power circuit this change-over circuit of electric coupling respectively.
Preferably, this change-over circuit more comprises the first DC-to-DC converter, this this stand-by power circuit of the first DC-to-DC converter electric coupling, this first DC-to-DC converter receives this first power supply and exports second source according to this first power supply from this buck power factor controller, and this stand-by power circuit receives this second source from this first DC-to-DC converter.
Preferably, more comprise the second DC-to-DC converter, this this stand-by power circuit of the second DC-to-DC converter electric coupling, this DC-to-DC converter and this change-over circuit are split type, this second DC-to-DC converter receives this first power supply and exports second source according to this first power supply from this buck power factor controller, and this stand-by power circuit receives this second source from this second DC-to-DC converter.
Preferably, this solid state lamp source module has at least one laser lamp source, this projector's power-supply system more comprises power circuit, and this power circuit comprises system power supply circuit and stand-by power circuit, this system power supply circuit and this stand-by power circuit this change-over circuit of electric coupling respectively.
Preferably, more comprise the 3rd DC-to-DC converter, this system power supply circuit of the 3rd DC-to-DC converter electric coupling, the 3rd DC-to-DC converter receives this first power supply and according to this first power supply output system driving power, this system power supply circuit receives this system drive power supply from the 3rd DC-to-DC converter from this buck power factor controller.
Preferably, this change-over circuit more comprises the 4th DC-to-DC converter, this stand-by power circuit of the 4th DC-to-DC converter electric coupling, the 4th DC-to-DC converter receives this first power supply and exports second source according to this first power supply from this buck power factor controller, and this stand-by power circuit receives this second source from the 4th DC-to-DC converter.
Compare with prior art, by projector of the present invention power-supply system, can avoid unnecessary power loss, to improve the overall efficiency of projector's power-supply system.
Brief description of the drawings
Fig. 1 is the first embodiment schematic diagram of projector of the present invention power-supply system;
Fig. 2 is the second embodiment schematic diagram of projector of the present invention power-supply system;
Fig. 3 is the 3rd embodiment schematic diagram of projector of the present invention power-supply system;
Fig. 4 is the 4th embodiment schematic diagram of projector of the present invention power-supply system.
Embodiment
Projector of the present invention power-supply system goes for possessing the projection arrangement of power factor correction circuit, when projector's power-supply system receives after AC power, can directly provide the input power that is applicable to driving circuit by mat change-over circuit.In addition, design of the present invention can reduce the overall volume of change-over circuit in projector's power-supply system, more can be applied to micro projector, but not as limit.
Fig. 1 is the embodiment schematic diagram of projector of the present invention power-supply system 100.As shown in Figure 1, projector's power-supply system 100 comprises change-over circuit 102, solid state lamp source driving circuit 110 and solid state lamp source module 120.Change-over circuit 102 has buck power factor controller 104, in order to receive AC power a and to export the first power supply b according to AC power a.Solid state lamp source driving circuit 110 connects change-over circuit 102 and directly receives the first power supply b from buck power factor controller 104, and solid state lamp source driving circuit 110 is according to the first power supply b output driving power c.Solid state lamp source module 120 connects solid state lamp source driving circuit 110 and receives driving power c from solid state lamp source driving circuit 110.In other words, solid state lamp source driving circuit can be directly receives required electric power from change-over circuit, does not need, by extra DC-to-DC converter, to avoid power loss again.
Fig. 2 is another embodiment schematic diagram of projector of the present invention power-supply system 100.In the embodiment of Fig. 2, solid state lamp source module 120 adopts LED lamp source, as shown in Figure 2, solid state lamp source module 120 has LED lamp source 122a～122c, correspondingly, solid state lamp source driving circuit 110 has the first driver 112a, the second driver 112b and the 3rd driver 112c.When solid state lamp source driving circuit 110 is after buck power factor controller 104 receives the first power supply b, the first driver 112a, the second driver 112b and the 3rd driver 112c export respectively driving power c1～c3 to LED lamp source 122a～122c according to the first power supply b.Alternatively, LED lamp source 122a～122c is for example respectively red light source, green light source, blue-light source, now driver 112a～112c correspondence be respectively red light source driver, green light source driver and blue-light source driver.If with change-over circuit 102 there is the first received power, solid state lamp source module 120 has the second received power, the ratio of the second received power and the first received power, compares existing projector power-supply system, whole efficiency approximately can improve 10%.Therefore, compared to the framework of existing projector power-supply system, the present invention utilizes buck power factor controller step-down also directly to provide the input power that is applicable to driving circuit, that is, between the first driver 112a, the second driver 112b and the 3rd driver 112c and buck power factor controller 104 without by other DC-to-DC converter, thereby the whole efficiency of projector's power-supply system is promoted.
In addition, as shown in Figure 2, except the solid state lamp source driving circuit 110 of aforementioned connection change-over circuit 102, and connect outside the solid state lamp source module 120 of solid state lamp source driving circuit 110, projector's power-supply system 100 also comprises the power circuit 130 with system power supply circuit 132 and stand-by power circuit 134.System power supply circuit 132 and stand-by power circuit 134 this change-over circuit 102 of electric coupling respectively.System power supply circuit 132 is for example the circuit that is connected in main electronic component in projector's power-supply system, and is connected to the circuit of periphery electronic installation (as fan).Particularly, system power supply circuit 132 in power circuit 130 is directly to connect change-over circuit 102, and the common power consumption of stand-by power circuit 134 is less, DC-to-DC converter 106 preferably can be separately set in change-over circuit 102, make stand-by power circuit 134 by DC-to-DC converter 106 electric coupling change-over circuits 102, in the hope of obtaining more stable output from DC-to-DC converter 106.In other embodiments, also can adopt the independent mode arranging of DC-to-DC converter 106, as shown in Figure 3, DC-to-DC converter 106 is to separate with change-over circuit 102, benefit with this structural design is for example to guarantee that change-over circuit 102 has smaller size smaller on processing procedure.The visual process requirement of described DC-to-DC converter 106 is taked all kinds of converters, such as flyback DC-to-DC converter or adopt LLC DC-to-DC converter of LLC resonance framework etc.
With the transmission of signal, when DC-to-DC converter 106 receives after the first power supply b from buck power factor controller, DC-to-DC converter 106 is according to extremely stand-by power circuit 134 of the first power supply b output second source d.Stand-by power circuit 134 receives second source d required electric power when maintaining standby.132, system power supply circuit can directly receive required electric power from the buck power factor controller 104 of change-over circuit 102, does not need, by extra DC-to-DC converter, to avoid power loss again.
Fig. 4 is another embodiment schematic diagram of projector of the present invention power-supply system 100.In the embodiment of Fig. 4, solid state lamp source module 120 adopts laser lamp source, and as shown in Figure 4, solid state lamp source module has laser lamp source 124a～124b, and correspondingly, solid state lamp source driving circuit 110 has the first driver 112a and the second driver 112b.When solid state lamp source driving circuit 110 is after buck power factor controller 104 receives the first power supply b, the first driver 112a and the second driver 112b export respectively driving power c1～c2 to laser lamp source 124a～124b according to the first power supply b.Should be noted, between driver and laser lamp source, be not limited to aforementioned man-to-man configuration mode, in other embodiments, can select the configuration mode of a driver output driving power to a plurality of laser lamps source.In other words, the quantity viewable design demand of driver is selected identical with the quantity in laser lamp source, or selects the driver of lesser amt.Compared to the framework of existing projector power-supply system, the present invention utilizes buck power factor controller 104 step-down also directly to provide the input power that is applicable to driving circuit, that is, between the first driver 112a and the second driver 112b and buck power factor controller 104, without by other DC-to-DC converter, the whole efficiency of projector's power-supply system is promoted.
In addition, as shown in Figure 4, projector's power-supply system 100 also comprises the power circuit 130 with system power supply circuit 132 and stand-by power circuit 134.System power supply circuit 132 and stand-by power circuit 134 this change-over circuit 102 of electric coupling respectively.Particularly, the common power consumption of stand-by power circuit 134 is less, DC-to-DC converter 106 preferably can be separately set in change-over circuit 102, make stand-by power circuit 134 by DC-to-DC converter 106 electric coupling change-over circuits 102, in the hope of obtaining more stable output from DC-to-DC converter.As previously mentioned, DC-to-DC converter 106 also can be adopted the structural design of separating with change-over circuit 102, can guarantee that change-over circuit 102 has smaller size smaller on processing procedure.On the other hand, if while adopting projector's power-supply system 100 in laser lamp source to need higher power input numerical value, DC-to-DC converter 116 also can be set in addition in projector's power-supply system 100, make system power supply circuit 132 by DC-to-DC converter 116 electric coupling change-over circuits 102, in the hope of obtaining more stable output from DC-to-DC converter 116.In other embodiments, the DC-to-DC converter 116 being connected with system power supply circuit 132 also can be selected to be arranged in change-over circuit 102, or selects specification and select not arrange depending on actual.In addition, as previously mentioned, the visual process requirement of DC-to-DC converter is taked all kinds of converters, such as flyback DC-to-DC converter or adopt LLC DC-to-DC converter of LLC resonance framework etc.
With the transmission of signal, when DC-to-DC converter 116 receives after the first power supply b from buck power factor controller 104, DC-to-DC converter 116 according to the first power supply b output system driving power e to system power supply circuit 132.System power supply circuit 132 receiving system driving power e required electric power during for System Operation.If have the first received power with change-over circuit 102, solid state lamp source module 120 has the second received power, and the ratio of the second received power and the first received power, compares existing projector power-supply system, and whole efficiency approximately can improve 10%.Must voltage could be offered via the DC-to-DC converter in the DC-to-DC converter of change-over circuit and driving circuit to the system power supply circuit of rear class with respect to the framework of existing projector power-supply system, projector of the present invention power-supply system can be saved the DC-to-DC converter of one-level, and the whole efficiency of projector's power-supply system is promoted.
In sum, by projector of the present invention power-supply system, can reduce the number that connects DC-to-DC converter, particularly utilize buck power factor controller, the DC-to-DC converter between change-over circuit and driving circuit under known framework is omitted.Design can be avoided unnecessary power loss by this, to improve the overall efficiency of projector's power-supply system.In addition, can reduce the overall volume of change-over circuit in projector's power-supply system by design of the present invention, more can improve the convenience of projection arrangement installing.
The present invention is described by above-mentioned related embodiment, but above-described embodiment is only for implementing example of the present invention.Must be pointed out that, the embodiment having disclosed does not limit the scope of the invention.On the contrary, being contained in the spirit of claim and the amendment of scope and equalization arranges and is all contained in scope of the present invention.
Claims (7)
1. projector's power-supply system, is characterized in that, comprises:
Change-over circuit, has buck power factor controller, in order to receive AC power and to export the first power supply according to this AC power;
Solid state lamp source driving circuit, connects this change-over circuit and directly receives this first power supply from this buck power factor controller, and this solid state lamp source driving circuit is according to this first power supply output driving power;
Solid state lamp source module, connect this solid state lamp source driving circuit and certainly this solid state lamp source driving circuit receive this driving power.
2. projector as claimed in claim 1 power-supply system, it is characterized in that, this solid state lamp source module has at least one LED lamp source, this projector's power-supply system more comprises power circuit, this power circuit comprises system power supply circuit and stand-by power circuit, this system power supply circuit and this stand-by power circuit this change-over circuit of electric coupling respectively.
3. projector as claimed in claim 2 power-supply system, it is characterized in that, this change-over circuit more comprises the first DC-to-DC converter, this this stand-by power circuit of the first DC-to-DC converter electric coupling, this first DC-to-DC converter receives this first power supply and exports second source according to this first power supply from this buck power factor controller, and this stand-by power circuit receives this second source from this first DC-to-DC converter.
4. projector as claimed in claim 2 power-supply system, it is characterized in that, more comprise the second DC-to-DC converter, this this stand-by power circuit of the second DC-to-DC converter electric coupling, this second DC-to-DC converter and this change-over circuit are split type, this second DC-to-DC converter receives this first power supply and exports second source according to this first power supply from this buck power factor controller, and this stand-by power circuit receives this second source from this second DC-to-DC converter.
5. projector as claimed in claim 1 power-supply system, it is characterized in that, this solid state lamp source module has at least one laser lamp source, this projector's power-supply system more comprises power circuit, this power circuit comprises system power supply circuit and stand-by power circuit, this system power supply circuit and this stand-by power circuit this change-over circuit of electric coupling respectively.
6. projector as claimed in claim 5 power-supply system, it is characterized in that, more comprise the 3rd DC-to-DC converter, this system power supply circuit of the 3rd DC-to-DC converter electric coupling, the 3rd DC-to-DC converter receives this first power supply and according to this first power supply output system driving power, this system power supply circuit receives this system drive power supply from the 3rd DC-to-DC converter from this buck power factor controller.
7. the projector's power-supply system as described in claim 5 or 6, it is characterized in that, this change-over circuit more comprises the 4th DC-to-DC converter, this stand-by power circuit of the 4th DC-to-DC converter electric coupling, the 4th DC-to-DC converter receives this first power supply and exports second source according to this first power supply from this buck power factor controller, and this stand-by power circuit receives this second source from the 4th DC-to-DC converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410253484.0A CN104062834B (en) | 2014-06-09 | 2014-06-09 | Projector's power-supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410253484.0A CN104062834B (en) | 2014-06-09 | 2014-06-09 | Projector's power-supply system |
Publications (2)
| Publication Number | Publication Date |
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| CN104062834A true CN104062834A (en) | 2014-09-24 |
| CN104062834B CN104062834B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410253484.0A Active CN104062834B (en) | 2014-06-09 | 2014-06-09 | Projector's power-supply system |
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| CN (1) | CN104062834B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107567132A (en) * | 2017-08-30 | 2018-01-09 | 苏州佳世达光电有限公司 | Drive circuit, control method and projector |
| CN109254483A (en) * | 2018-11-05 | 2019-01-22 | 苏州佳世达光电有限公司 | Driving circuit and projector |
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| US5982638A (en) * | 1997-10-31 | 1999-11-09 | Astec International Limited | Single stage power converter with regenerative snubber and power factor correction |
| US20030197428A1 (en) * | 2002-04-05 | 2003-10-23 | Hatton Thomas E. | Power processor |
| CN1523946A (en) * | 2003-02-19 | 2004-08-25 | 明基电通股份有限公司 | Projector with external power source |
| CN1641958A (en) * | 2004-01-02 | 2005-07-20 | 明基电通股份有限公司 | Power factor improving device built in DC-DC converter |
| CN1665111A (en) * | 2004-03-02 | 2005-09-07 | 亚洲光学股份有限公司 | Power supply stabilizing device having active ballasting function and method thereof |
| JP2006145824A (en) * | 2004-11-19 | 2006-06-08 | Seiko Epson Corp | Projector |
| CN101122730A (en) * | 2006-08-09 | 2008-02-13 | 明基电通股份有限公司 | Power factor correction circuit and related projector |
| CN101932873A (en) * | 2007-09-07 | 2010-12-29 | 飞利浦固体状态照明技术公司 | Methods and apparatus for providing led-based spotlight illumination in stage lighting applications |
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2014
- 2014-06-09 CN CN201410253484.0A patent/CN104062834B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5982638A (en) * | 1997-10-31 | 1999-11-09 | Astec International Limited | Single stage power converter with regenerative snubber and power factor correction |
| US20030197428A1 (en) * | 2002-04-05 | 2003-10-23 | Hatton Thomas E. | Power processor |
| CN1523946A (en) * | 2003-02-19 | 2004-08-25 | 明基电通股份有限公司 | Projector with external power source |
| CN1641958A (en) * | 2004-01-02 | 2005-07-20 | 明基电通股份有限公司 | Power factor improving device built in DC-DC converter |
| CN1665111A (en) * | 2004-03-02 | 2005-09-07 | 亚洲光学股份有限公司 | Power supply stabilizing device having active ballasting function and method thereof |
| JP2006145824A (en) * | 2004-11-19 | 2006-06-08 | Seiko Epson Corp | Projector |
| CN101122730A (en) * | 2006-08-09 | 2008-02-13 | 明基电通股份有限公司 | Power factor correction circuit and related projector |
| CN101932873A (en) * | 2007-09-07 | 2010-12-29 | 飞利浦固体状态照明技术公司 | Methods and apparatus for providing led-based spotlight illumination in stage lighting applications |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107567132A (en) * | 2017-08-30 | 2018-01-09 | 苏州佳世达光电有限公司 | Drive circuit, control method and projector |
| CN109254483A (en) * | 2018-11-05 | 2019-01-22 | 苏州佳世达光电有限公司 | Driving circuit and projector |
| CN109254483B (en) * | 2018-11-05 | 2021-06-15 | 苏州佳世达光电有限公司 | Drive circuit and projector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104062834B (en) | 2016-04-06 |
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