CN203151843U - Light-dimming desk lamp with self-controlled illumination - Google Patents
Light-dimming desk lamp with self-controlled illumination Download PDFInfo
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- CN203151843U CN203151843U CN 201320175426 CN201320175426U CN203151843U CN 203151843 U CN203151843 U CN 203151843U CN 201320175426 CN201320175426 CN 201320175426 CN 201320175426 U CN201320175426 U CN 201320175426U CN 203151843 U CN203151843 U CN 203151843U
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- bulb
- resistance
- lampshade
- capacitor
- light
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Abstract
The utility model discloses a light-dimming desk lamp with self-controlled illumination. The light-dimming desk lamp with self-controlled illumination comprises a lamp holder (1), a lamp bulb (2) and a lampshade (3), wherein the lampshade (3) is installed on the lamp holder (1); the lamp bulb (2) is arranged in the lampshade (3) and connected to a power supply via a controller; and the controller comprises a bridge rectifier, a relaxation oscillator and a voltage divider. The light-dimming desk lamp with self-controlled illumination disclosed by the utility model has the beneficial effect that a photosensitive resistor is arranged on the control circuit of the desk lamp; when the outside light is darkened, a voltage on the lamp bulb is increased to brighten the lamp bulb; when the outside light is brightened, the voltage on the lamp bulb is reduced to darken the lamp bulb; in this way, the brightness of the lamp bulb is capable of being automatically suitable for human eyes, and the inconvenience of always needing to perform light-dimming is omitted.
Description
Technical field
The utility model relates to a kind of desk lamp, particularly relates to a kind of illumination from controlling lamp dimmer.
Background technology
Human eye is worked under dark or bright excessively excessively environment; all be easy to produce tired; particularly for child; child's eyes are prepattern also; when learning under desk lamp, preferably brightness is moderate, crosses bright or dark excessively; to its visual acuity affected very big all; the brightness of existing desk lamp is controlled, by switch the brightness of desk lamp is regulated, can be so that the brightness of desk lamp is fit to human eye; but constantly regulate; seem pretty troublesome, and because always will regulate, people are when work and study are wholwe-hearted; may just forget adjusting brightness, so still not reach the purposes of protection human eye.
The utility model content
The purpose of this utility model namely is to overcome the deficiency of present technology; provide illumination from controlling lamp dimmer, it all is manual solving existing desk lamp brightness regulation, and people are when work and study are wholwe-hearted; still can forget and regulate light, not reach the effect of protection human eye.
The utility model is achieved through the following technical solutions: illumination is from controlling lamp dimmer, comprise lamp bracket, bulb and lampshade, described lampshade is installed on the lamp bracket, bulb is arranged in the lampshade, it is characterized in that: described bulb is connected to power supply by a controller, described controller comprises bridge rectifier, relaxation oscillator and voltage divider, insert civil power behind the input serial connection bulb of described bridge rectifier, the output of bridge rectifier is connected to controllable silicon K, described relaxation oscillator and voltage divider all are connected in parallel on the controllable silicon K, the relaxation vibration device comprises adjustable resistance R1, neon bulb N and capacitor C 1, one end of capacitor C 1 connects the negative electrode of controllable silicon K, the other end is respectively to connect the anode of controllable silicon K1 and the control utmost point that meets controllable silicon K by neon bulb N by adjustable resistance R1, voltage divider comprises resistance R 4 and the photo resistance R3 of series connection, electric current flows into photo resistance R3 from resistance R 4, one end of photo resistance R3 connection resistance R 4 also is connected to the positive pole of capacitor C 1 by diode D5, charge to capacitor C 1, namely the negative pole of diode D5 connects capacitor C 1.
Described photo resistance R3 is positioned at the rear end of lampshade.
Described lampshade is that light-proof material is made.
Described bulb place is in series with a switch J.
Be parallel with a filter capacitor C2 on the described bulb.
Be parallel with a discharge resistance R2 on the described bulb.
The beneficial effects of the utility model are: the control circuit at desk lamp arranges a photo resistance, when extraneous light deepening, increase voltage on the bulb, make bulb brighten, extraneous light brightens, and reduces the voltage on the bulb, makes the bulb deepening, thereby make the brightness of bulb be fit to human eye automatically, save the trouble that always will regulate.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the circuit structure diagram of controller.
Embodiment
The utility model is described in further detail below in conjunction with embodiment, but structure of the present utility model is not limited only to following examples:
[embodiment]
As Fig. 1, shown in Figure 2, illumination is from controlling lamp dimmer, comprise lamp bracket 1, bulb 2 and lampshade 3, described lampshade 3 is installed on the lamp bracket 1, bulb 2 is arranged in the lampshade 3, it is characterized in that: described bulb 2 is connected to power supply by a controller, described controller comprises bridge rectifier, relaxation oscillator and voltage divider, civil power is inserted in input serial connection bulb 2 backs of described bridge rectifier, the output of bridge rectifier is connected to controllable silicon K, described relaxation oscillator and voltage divider all are connected in parallel on the controllable silicon K, the relaxation vibration device comprises adjustable resistance R1, neon bulb N and capacitor C 1, one end of capacitor C 1 connects the negative electrode of controllable silicon K, the other end is respectively to connect the anode of controllable silicon K1 and the control utmost point that meets controllable silicon K by neon bulb N by adjustable resistance R1, voltage divider comprises resistance R 4 and the photo resistance R3 of series connection, electric current flows into photo resistance R3 from resistance R 4, one end of photo resistance R3 connection resistance R 4 also is connected to the positive pole of capacitor C 1 by diode D5, charge to capacitor C 1, namely the negative pole of diode D5 connects capacitor C 1.
Further, described photo resistance R3 is positioned at the rear end of lampshade 3, and lampshade 3 is made for light-proof material, and lampshade 3 cuts off bulb 2 and photo resistance R3, make the illumination of bulb 2 penetrate less than on the photo resistance R3, make the resistance of photo resistance R3 to change by the light of surrounding environment.
Described bulb 2 places are in series with a switch J, control circuit by and conducting.
Be parallel with a filter capacitor C2 and a discharge resistance R2 on the described bulb 2, for the protection of bulb 2.
Above-mentioned bridge rectifier is that D1～D4 forms.
Operation principle of the present utility model: during beginning, the current supply circuit of bulb 2 ends, and at this moment is capacitor C 1 charging, when capacitor C 1 is charged to the glow voltage of neon bulb N, neon bulb N is switched on, the conducting thereby controllable silicon K is triggered, the current supply circuit conducting of bulb 2, bulb 2 is luminous, adjusting controllable resistor R1 can change the charge efficiency of capacitor C 1, thereby change the controllable silicon K angle of flow, change bulb 2 brightness, make that the brightness of bulb 2 is moderate.
Voltage divider also charges to capacitor C 1 by diode D5, when extraneous light deepening, photo resistance R3 presents high resistance, the anodal current potential of diode D5 raises, diode D5 accelerates to the speed of capacitor C 1 charging, and frequency of oscillation uprises, and the angle of flow of controllable silicon K increases, bulb 2 both end voltage raise, thereby bulb 2 brightens; When ambient light brightens, photo resistance R3 resistance decreasing, with above-mentioned opposite, bulb 2 both end voltage reduce, thus bulb 2 deepenings.
Claims (6)
1. illumination is from controlling lamp dimmer, comprise lamp bracket (1), bulb (2) and lampshade (3), described lampshade (3) is installed on the lamp bracket (1), bulb (2) is arranged in the lampshade (3), it is characterized in that: described bulb (2) is connected to power supply by a controller, described controller comprises bridge rectifier, relaxation oscillator and voltage divider, civil power is inserted in input serial connection bulb (2) back of described bridge rectifier, the output of bridge rectifier is connected to controllable silicon K, described relaxation oscillator and voltage divider all are connected in parallel on the controllable silicon K, the relaxation vibration device comprises adjustable resistance R1, neon bulb N and capacitor C 1, one end of capacitor C 1 connects the negative electrode of controllable silicon K, the other end is respectively to connect the anode of controllable silicon K1 and the control utmost point that meets controllable silicon K by neon bulb N by adjustable resistance R1, voltage divider comprises resistance R 4 and the photo resistance R3 of series connection, electric current flows into photo resistance R3 from resistance R 4, one end of photo resistance R3 connection resistance R 4 also is connected to the positive pole of capacitor C 1 by diode D5, charge to capacitor C 1, namely the negative pole of diode D5 connects capacitor C 1.
2. illumination according to claim 1 is from controlling lamp dimmer, and it is characterized in that: described photo resistance R3 is positioned at the rear end of lampshade (3).
3. illumination according to claim 1 and 2 is from controlling lamp dimmer, and it is characterized in that: described lampshade (3) is made for light-proof material.
4. illumination according to claim 1 is from controlling lamp dimmer, and it is characterized in that: described bulb (2) locates to be in series with a switch J.
5. illumination according to claim 1 is characterized in that: be parallel with a filter capacitor C2 on the described bulb (2) from controlling lamp dimmer.
6. illumination according to claim 1 is characterized in that: be parallel with a discharge resistance R2 on the described bulb (2) from controlling lamp dimmer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320175426 CN203151843U (en) | 2013-04-10 | 2013-04-10 | Light-dimming desk lamp with self-controlled illumination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320175426 CN203151843U (en) | 2013-04-10 | 2013-04-10 | Light-dimming desk lamp with self-controlled illumination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203151843U true CN203151843U (en) | 2013-08-21 |
Family
ID=48979330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320175426 Expired - Fee Related CN203151843U (en) | 2013-04-10 | 2013-04-10 | Light-dimming desk lamp with self-controlled illumination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203151843U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107087334A (en) * | 2017-05-08 | 2017-08-22 | 西安外事学院 | A kind of lamp brightness automatic control system |
-
2013
- 2013-04-10 CN CN 201320175426 patent/CN203151843U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107087334A (en) * | 2017-05-08 | 2017-08-22 | 西安外事学院 | A kind of lamp brightness automatic control system |
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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: 20130821 Termination date: 20140410 |