CN202679263U - Adapter - Google Patents
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- CN202679263U CN202679263U CN 201220174849 CN201220174849U CN202679263U CN 202679263 U CN202679263 U CN 202679263U CN 201220174849 CN201220174849 CN 201220174849 CN 201220174849 U CN201220174849 U CN 201220174849U CN 202679263 U CN202679263 U CN 202679263U
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- Prior art keywords
- adapter
- led lamp
- resistance
- switch
- light
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Abstract
The utility model discloses an adapter. The adapter comprises an input terminal, a housing with a built-in power supply conversion circuit, and an output power line, and further comprises an LED lamp fixedly arranged on the surface of the housing, wherein the LED lamp is connected with an output of the adapter through a light-operated switch. According to the adapter provided by the utility model, the LED lamp is added and is controlled by the light-operated switch, so that a night-light function is provided on the basis of the original functions of the LED lamp, thereby improving the use effect. While at night, the LED lamp can be automatically started for indoor lighting, and if the adapter is arranged behind a display screen, as the environment around the display screen gets dark, the lights emitted by the adapter can effectively improve the optical environment around the display screen, thereby relieving eye fatigue for vision protection; besides, electric components in the adapter are in an active mode, thereby prolonging the service life.
Description
Technical field
The utility model relates to the switch power technology field, particularly relates to the adapter that a kind of display, notebook or TV use.
Background technology
Along with the develop rapidly of electronic equipment, each class of electronic devices has been enriched user's routine work learning life greatly, but the thing followed is the indispensable power demands of each class of electronic devices.Display is as the indispensable part of personal desktop computer, and its adapter is being played the part of always and only is the role of monitor power supply.Adapter, is constantly weeded out the old and bring forth the new except the hommization aspect along with the development of technology is maked rapid progress as supply module, also in function aspects the embodiment of advancing by leaps and bounds is arranged.
In the prior art, adapter generally is divided into following two kinds of shapes, and the first is the Normal type, needs circumscripted power line to connect civil power; The second is Wall Type type, does not need circumscripted power line, can directly utilize the socket connection civil power, and above adapter only plays the effect of power supply.
Figure 2 shows that the basic circuit structure schematic diagram of the Normal type power supply adaptor of prior art.As shown in Figure 2, the basic circuit structure of existing adapter comprises interchange input module 1, ac filter module 2, rectification module 3, transformer 4, pulse width modulating chip 5, feedback circuit module 6, rectifier filter circuit 7, alternating current inputs to power supply adaptor from input module, and carry out through rectification module AC rectification being filtered into direct current again after filtering is processed through the ac filter module, then with described direct current input transformer, described transformer carries out decompression transformation with the direct current of inputting and obtains a low-voltage direct-current pulsating voltage, then described low-voltage direct-current pulsating voltage is inputted described rectifier filter circuit 7, described rectifier filter circuit 7 with described low-voltage direct-current pulsating voltage rectifying and wave-filtering after output voltage direct current stably, simultaneously direct current is inputted described feedback circuit module 6 and carried out the voltage stabilizing adjustment, described feedback circuit 6 transfers to pulse width modulating chip 5 with the variation of output voltage, adjusts duty by pulse width modulating chip and realizes that recently the change of input is to realize the purpose of output voltage stabilization.
Figure 1 shows that the power supply adaptor external structure schematic diagram of prior art.As shown in Figure 1, it comprises AC input terminal 8, accommodates plastic casing 9 and the direct current output connecting line 10 of above-mentioned basic circuit.When the user need to use the electric equipment of direct current input power supply, adapter AC input terminal 8 is exchanged input socket with civil power to be connected, direct current output connecting line 10 is connected with electrical appliance, alternating current can be converted to corresponding direct current, drives the electrical appliance normal operation.
But, the configuration feature of power supply of the prior art only limits to be each power unit energy supply, its only competence exertion effect when the user need to use corresponding electrical appliance, for long-time idle adapter, can not satisfy people to the demand of electronic product multifunction, the adapter internal electronic component life-span is reduced.
Summary of the invention
The purpose of this utility model is for the technological deficiency that exists in the prior art, and a kind of adapter with night-light function is provided.
For realizing that the technical scheme that the purpose of this utility model adopts is:
A kind of adapter, it comprises housing and the out-put supply line of input terminal, built-in power conversion circuit, and it also comprises the LED lamp that is fixedly installed on surface of shell, and described LED lamp is connected with the output of adapter through the light-operated switch module.
Described LED lamp is the LED area source.
On LED lamp top the frosted lampshade is set.
Also be fixedly installed switch on the described housing, described switch is arranged between light-operated switch module and the Voltage-output.
Described light-operated switch module comprises divider resistance, photo resistance, current-limiting resistance and NPN type triode, and wherein, described photo resistance one end ground connection is connected to switch behind the other end series connection divider resistance, and described switch is communicated with output DC; The base stage of described NPN type triode is connected between divider resistance and the photo resistance, and collector electrode is connected to output behind current-limiting resistance, behind the emitter series LED lamp with described photo resistance common ground.
Described light-operated switch module 20 comprises divider resistance 201, photo resistance 202, current-limiting resistance 203, bypass filter capacitor 204 and NPN type triode 205 and positive-negative-positive triode 206, wherein, described photo resistance 202 1 end ground connection, be connected to switch 22 behind the other end series connection divider resistance 201, described switch 22 is communicated with output DC; The base stage of described NPN type triode 205 is connected between divider resistance 201 and the photo resistance 202, collector electrode is connected to switch 22 behind current-limiting resistance 203, emitter and described photo resistance 202 common grounds, described positive-negative-positive triode 206 base stages are connected between NPN type transistor collector and the current-limiting resistance 203, the collector electrode of described positive-negative-positive triode 20 is connected to switch 22, behind the emitter series LED lamp with described photo resistance 202 common grounds.
Described light-operated switch module is photodiode or the phototriode that is electrically connected with described LED.
Compared with prior art, the beneficial effects of the utility model are:
Adapter of the present utility model; increase the LED lamp and utilized the light-operated switch module that it is controlled; can increase noctilucent function at its original function; improve its result of use; its automatically starting LED lamp carries out room lighting when night, when adapter is positioned at the display rear portion, and the luminous environment when dimmed around the display around the light that adapter sends can effectively improve display; be conducive to relieving eye strain, vision protection.Make simultaneously the inner electric elements of adapter be in active state, be conducive to prolong its life-span.
Description of drawings
Figure 2 shows that the basic circuit structure schematic diagram of the Normal type adapter of prior art;
Figure 1 shows that the adapter external structure schematic diagram of prior art;
Figure 3 shows that adapter structure schematic diagram of the present utility model;
The basic circuit structure figure of the adapter of Fig. 4 the utility model the first embodiment;
Among the figure: 1. exchange input module, 2. ac filter module, 3. rectification module 13,4. transformer, 5. pulse width modulating chip, 6. feedback circuit module, 7. rectifier filter circuit, 11 exchange input modules, 12. ac filter modules, 13. rectification module, 14. transformer, 15. pulse width modulating chips, 16. feedback circuit modules, 17. rectifier filter circuit, 20. the light-operated switch module, 21.LED lamp, 22. switches, 201. divider resistance, 202. photo resistance, 203. current-limiting resistances, 204. bypass filter capacitors, 205.NPN the type triode, 206.PNP type triode.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As shown in Figure 3, it comprises adapter of the present utility model input terminal, is built-in with housing 30, out-put supply line, switch 22 and the LED lamp 21 of foregoing circuit, described LED lamp is fixedly connected with on the surface of described housing 30 and has above-mentioned circuit to carry out energy supply, and whether the use of the light-operated night-light function of described switch controls.Wherein, described LED lamp is the LED area source; large tens times than UV LED point-source of light of the same power radiating surfaces of LED lamp area source; radiating effect is fine, can approach the theoretical life-span, and surface source luminescence is soft simultaneously; being convenient to the illumination in evening uses; certainly, also can the frosted lampshade be set on LED lamp top, with further softening lighting effect in protection LED lamp.
As shown in Figure 4, the basic circuit structure of the adapter of the utility model the first embodiment, it comprises interchange input module 11, ac filter module 12, rectification module 13, transformer 14, pulse width modulating chip 15, feedback circuit module 16, rectifier filter circuit 17, LED lamp 21, light-operated switch module 20 and switch 22, alternating current inputs to power supply adaptor from input module, and carry out through rectification module AC rectification being filtered into direct current again after filtering is processed through the ac filter module, then with described direct current input transformer, described transformer carries out decompression transformation with the direct current of inputting and obtains a low-voltage direct-current pulsating voltage, then described low-voltage direct-current pulsating voltage is inputted described rectifier filter circuit 17, described rectifier filter circuit 17 with described low-voltage direct-current pulsating voltage rectifying and wave-filtering after output voltage direct current stably, simultaneously direct current is inputted described feedback circuit module 16 and carried out the voltage stabilizing adjustment, described feedback circuit 6 transfers to pulse width modulating chip 15 with the variation of output voltage, adjusts duty by pulse width modulating chip and realizes that recently the change of input is to realize the purpose of output voltage stabilization.
The voltage that described light-operated switch module 20 is connected to foregoing circuit output through switch 22 is direct current stably, described switch is the mechanical switchs such as button, plug-type or slidingtype, its that can control the light-operated switch module and connection status direct current output determine then it is to LED lamp energy supply whether control.
Described light-operated switch module 20 comprises divider resistance 201, photo resistance 202, current-limiting resistance 203, bypass filter capacitor 204 and NPN type triode 205 and positive-negative-positive triode 206, wherein, described photo resistance 202 1 end ground connection, be connected to switch 22 behind the other end series connection divider resistance 201, described switch 22 is communicated with output DC.The base stage of described NPN type triode 205 is connected between divider resistance 201 and the photo resistance 202, and collector electrode is connected to switch 22 behind current-limiting resistance 203, emitter and described photo resistance 202 common grounds.Described bypass filter capacitor 204 is connected in parallel on the photo resistance 202, and its change in voltage that photo resistance 202 resistance variations can be brought is filtered and played simultaneously time-lag action, with the triode at protection rear portion.Described positive-negative-positive triode 206 base stages are connected between NPN type transistor collector and the current-limiting resistance 203, and collector electrode is connected to switch 22, and emitter connects LED lamp 21, described LED lamp 21 other ends and photo resistance 202 common grounds.
When the user need to start light-operated noctilucent function, control described switch 22 the light-operated switch module is communicated with VD.When having illumination to be mapped to photo resistance, its resistance is very little, and the base voltage of triode 205 is in low level and makes triode be in cut-off state, and the base voltage of triode 206 is in a high position and ends, the 21 not conductings of LED lamp; When photo resistance 202 during without irradiation, its resistance increases, and the base voltage of triode 205 is raised to and makes its conducting, and the base voltage of triode 206 reduces and conducting simultaneously, 21 conductings of LED lamp, thus luminous.When the user does not need light-operated night-light function, control switch 12 disconnections are got final product.
The second embodiment
Further improvement as above-described embodiment, described light-operated switch module also can be saved positive-negative-positive triode 206 and the LED lamp is connected serially between the emitter and ground connection of NPN type triode 205, utilize triode 205 conductings whether to control directly whether luminous it is, can realize above-mentioned purpose equally.
The 3rd embodiment
Further improvement as above-mentioned two embodiment, described light-operated switch module also can adopt conducting that photodiode controls triode whether, be about to photo resistance and change conventional, electric-resistance into, the photodiode of between this resistance and divider resistance 201, connecting simultaneously, utilize the photodiode conducting whether can control equally the change in voltage at triode 205 base stage places, then realize the control to the LED lamp, its physical circuit and the course of work and above-mentioned basic identical do not repeat them here.
Further, adopt the light-sensitive elements such as photodiode or phototriode, utilize it can directly be electrically connected with LED by the photoconduction general character, carry out switch control.Certainly, utilize other light-sensitive elements slightly to make improvements the purpose that all can realize the light-operated switch of the utility model on the basis of above-described embodiment, it is easy to realize to those skilled in the art, so no longer launch to describe at this.
The above only is preferred implementation of the present utility model; should be noted that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. adapter, housing and out-put supply line that it comprises input terminal, built-in power conversion circuit is characterized in that: it also comprises the LED lamp that is fixedly installed on surface of shell, described LED lamp is connected with the output of adapter through the light-operated switch module.
2. adapter as claimed in claim 1, it is characterized in that: described LED lamp is the LED area source.
3. adapter as claimed in claim 1 is characterized in that: on LED lamp top the frosted lampshade is set.
4. adapter as claimed in claim 1, it is characterized in that: also be fixedly installed switch on the described housing, described switch is arranged between light-operated switch module and the Voltage-output.
5. such as each described adapter of claim 1-4, it is characterized in that: described light-operated switch module comprises divider resistance, photo resistance, current-limiting resistance and NPN type triode, wherein, described photo resistance one end ground connection, be connected to switch behind the other end series connection divider resistance, described switch is communicated with output DC; The base stage of described NPN type triode is connected between divider resistance and the photo resistance, and collector electrode is connected to output behind current-limiting resistance, behind the emitter series LED lamp with described photo resistance common ground.
6. such as each described adapter of claim 1-4, it is characterized in that: described light-operated switch module (20) comprises divider resistance (201), photo resistance (202), current-limiting resistance (203), bypass filter capacitor (204) and NPN type triode (205) and positive-negative-positive triode (206), wherein, described photo resistance (202) one end ground connection, be connected to switch (22) behind the other end series connection divider resistance (201), described switch (22) is communicated with output DC; The base stage of described NPN type triode (205) is connected between divider resistance (201) and the photo resistance (202), collector electrode is connected to switch (22) behind current-limiting resistance (203), emitter and described photo resistance (202) common ground, described positive-negative-positive triode (206) base stage is connected between NPN type transistor collector and the current-limiting resistance (203), the collector electrode of described positive-negative-positive triode (20) is connected to switch (22), behind the emitter series LED lamp with described photo resistance (202) common ground.
7. such as each described adapter of claim 1-4, it is characterized in that: photodiode or the phototriode of described light-operated switch module for being electrically connected with described LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220174849 CN202679263U (en) | 2012-04-23 | 2012-04-23 | Adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220174849 CN202679263U (en) | 2012-04-23 | 2012-04-23 | Adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202679263U true CN202679263U (en) | 2013-01-16 |
Family
ID=47500135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220174849 Expired - Fee Related CN202679263U (en) | 2012-04-23 | 2012-04-23 | Adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202679263U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104202887A (en) * | 2014-09-23 | 2014-12-10 | 上海西艾爱电子有限公司 | Economical and practical electronic optical controller |
| CN104202868A (en) * | 2014-08-06 | 2014-12-10 | 青岛歌尔声学科技有限公司 | Control circuit for controlling on and off of working electric appliance based on outside light and working electric appliance |
-
2012
- 2012-04-23 CN CN 201220174849 patent/CN202679263U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104202868A (en) * | 2014-08-06 | 2014-12-10 | 青岛歌尔声学科技有限公司 | Control circuit for controlling on and off of working electric appliance based on outside light and working electric appliance |
| CN104202887A (en) * | 2014-09-23 | 2014-12-10 | 上海西艾爱电子有限公司 | Economical and practical electronic optical controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20140423 |