CN108716626A - A kind of lighting system for keyboard - Google Patents
A kind of lighting system for keyboard Download PDFInfo
- Publication number
- CN108716626A CN108716626A CN201810299572.2A CN201810299572A CN108716626A CN 108716626 A CN108716626 A CN 108716626A CN 201810299572 A CN201810299572 A CN 201810299572A CN 108716626 A CN108716626 A CN 108716626A
- Authority
- CN
- China
- Prior art keywords
- triode
- lighting system
- led bulb
- keyboard
- photodiode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
- A01M29/12—Scaring or repelling devices, e.g. bird-scaring apparatus using odoriferous substances, e.g. aromas, pheromones or chemical agents
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
- F21V33/0004—Personal or domestic articles
- F21V33/0052—Audio or video equipment, e.g. televisions, telephones, cameras or computers; Remote control devices therefor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
The present invention proposes a kind of lighting system for keyboard, including keyboard body (1), it is equipped with through-hole (2) among each button on the keyboard body (1), LED bulb (3) is equipped in through-hole (2), one end is connected to photosensitive device (4) after each LED bulb (3) is in parallel, and the other end is connected to working power Vcc.The lighting system can be according to extraneous light conditions automatic luminous, and simple by circuit control, development cost is low.
Description
Technical field
The invention belongs to lighting system technical fields, more particularly to a kind of lighting system for keyboard.
Background technology
Keyboard is the most computer peripheral equipment of user's frequency of use, but when insufficient light, for using the people of keyboard
For, often do not see keyboard on letter, thus make will not touch system people use it is very inconvenient.Although having now
Some illuminated keyboards, but this kind of illuminated keyboard is required to manual switch operation, using very greatly most without the function of automatic switch
It is inconvenient.
Invention content
The present invention proposes a kind of lighting system for keyboard to solve existing technical problem.
The purpose of the present invention is achieved through the following technical solutions：A kind of lighting system for keyboard, including keyboard body
1, through-hole 2 is equipped among each button on the keyboard body 1, is equipped with LED bulb 3 in through-hole 2, each LED bulb 3 is simultaneously
One end is connected to photosensitive device 4 after connection, and the other end is connected to working power Vcc；The photosensitive device 4 includes photodiode
VD1, first resistor device R1, second resistor R2, the first triode Q1, the second triode Q2, variable resistance RP1 and capacitor
C；The photodiode VD1 cathode meet the working power Vcc of the keyboard body 1 through the first resistor device R1, and with
The base stage of the first triode Q1 connects, the plus earth of the photodiode VD1；The current collection of the first triode Q1
Pole meets the working power Vcc of the keyboard body 1, the emitter of the first triode Q1 and institute through the second resistor R2
State the base stage connection of the second triode Q2, the emitter ground connection of the second triode Q2, the current collection of the second triode Q2
Pole connects each LED bulb；The variable resistance RP1 be series at the emitter of the second triode Q2 and base stage it
Between；The capacitor C is in parallel with the photodiode VD1.
Further, the LED bulb is the light bulb of different colours.
Further, the lighting system further includes expelling parasite module, and the expelling parasite module includes insect repellant solution the storage box and sets
Object slot, the article putting groove are stored for insect repellant solution the storage box.
Description of the drawings
Fig. 1 is lighting system structure schematic diagram；
Fig. 2 is photosensitive device circuit diagram.
Specific implementation mode
Technical solution in the embodiment of the present invention that following will be combined with the drawings in the embodiments of the present invention carries out clear, complete
Ground describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
The present invention proposes a kind of lighting system for keyboard, including keyboard body 1, the keyboard combined with Figure 1 and Figure 2,
It is equipped with through-hole 2 among each button on ontology 1, LED bulb 3 is equipped in through-hole 2, the LED bulb is different colours
Light bulb.One end is connected to photosensitive device 4 after 3 parallel connection of each LED bulb, and the other end is connected to working power Vcc；The photoreceptor cartridge
To set 4 include photodiode VD1, first resistor device R1, second resistor R2, the first triode Q1, the second triode Q2, variable
Resistor RP1 and capacitor C；The photodiode VD1 cathode connect the keyboard body 1 through the first resistor device R1
Working power Vcc, and connect with the base stage of the first triode Q1, the plus earth of the photodiode VD1；Described
The collector of one triode Q1 connects the working power Vcc of the keyboard body 1, the one or three pole through the second resistor R2
The emitter of pipe Q1 is connect with the base stage of the second triode Q2, the emitter of the second triode Q2 ground connection, and described the
The collector of two triode Q2 connects each LED bulb；The variable resistance RP1 is series at the second triode Q2
Emitter and base stage between；The capacitor C is in parallel with the photodiode VD1.
The photosensitive device 4 incude ambient, export when ambient is attenuated to a certain state one control signal to
LED bulb makes it shine, and when more than ambient enhancing to the state, export another control signal makes it to LED bulb
It does not shine.
The lighting system further includes expelling parasite module, and the expelling parasite module includes insect repellant solution the storage box and article putting groove, described
Article putting groove is stored for insect repellant solution the storage box.Since insect repellant solution the storage box is at LED illumination, after LED illumination work, week
Temperature increase is enclosed, so that the insect repellant solution of insect repellant solution the storage box is distributed, plays certain anthelminthic effect.
When the lighting system work, the photodiode VD1 is in reverse operation state, when bright and clear, institute
Photodiode VD1 backward resistance very littles are stated, the reverse current by the photodiode VD1 is very big, passes through described first
The electric current of resistor R1 becomes larger, and the voltage on the first resistor device R1 increases, and the photodiode VD1 both end voltages subtract
Small, the voltage at the both ends the photodiode VD1 is less than opening for the first triode Q1 and the second triode Q2 at this time
The sum of voltage is opened, the first triode Q1 and the second triode Q2 cannot be simultaneously turned on, therefore the LED bulb cannot be sent out
Light；Illumination be attenuated to a certain state or it is following when, the photodiode VD1 backward resistances increase, described at this time photosensitive two
Pole pipe VD1 also makes the electric current by the first resistor device R1 become smaller in high impedance status by its reverse current very little,
The voltage on the first resistor device R1 becomes smaller simultaneously, and the voltage at the both ends the photodiode VD1 increases, photosensitive two pole
The voltage at the both ends pipe VD1 is equal to or more than the sum of the cut-in voltage of the first triode Q1 and the second triode Q2, institute
It states the first triode Q1 and the second triode Q2 while being switched on, therefore the LED bulb shines.The photosensitive device 4 can
By adjusting the voltage value at base stage of the resistance value of the variable resistance RP1 to adjust the second triode Q2, so as to
It is shone with setting the LED bulb in the case where which kind of state light is attenuated to.The lighting system can be according to extraneous light conditions certainly
Dynamic to shine, simple by circuit control, development cost is low.
Above to a kind of lighting system for keyboard provided by the present invention, it is described in detail, it is used herein
Principle and implementation of the present invention are described for specific case, and the explanation of above example is only intended to help to understand
The method and its core concept of the present invention；Meanwhile for those of ordinary skill in the art, according to the thought of the present invention, having
There will be changes in body embodiment and application range, in conclusion the content of the present specification should not be construed as to the present invention
Limitation.
Claims (3)
1. a kind of lighting system for keyboard, including keyboard body (1), it is characterised in that：It is every on the keyboard body (1)
It is equipped with through-hole (2) among a button, LED bulb (3) is equipped in through-hole (2), one end connects after each LED bulb (3) is in parallel
To photosensitive device (4), the other end is connected to working power Vcc；The photosensitive device (4) includes photodiode VD1, the first electricity
Hinder device R1, second resistor R2, the first triode Q1, the second triode Q2, variable resistance RP1 and capacitor C；It is described photosensitive
Diode VD1 cathode meet the working power Vcc of the keyboard body (1) through the first resistor device R1, and with described first
The base stage of triode Q1 connects, the plus earth of the photodiode VD1；Described in the collector warp of the first triode Q1
Second resistor R2 connects the working power Vcc of the keyboard body (1), the emitter and described second of the first triode Q1
The base stage of triode Q2 connects, the emitter ground connection of the second triode Q2, the collector connection of the second triode Q2
Each LED bulb；The variable resistance RP1 is series between the emitter and base stage of the second triode Q2；Institute
It is in parallel with the photodiode VD1 to state capacitor C.
2. lighting system according to claim 1, it is characterised in that：The LED bulb is the light bulb of different colours.
3. lighting system according to claim 2, it is characterised in that：The lighting system further includes expelling parasite module, described
Expelling parasite module includes insect repellant solution the storage box and article putting groove, and the article putting groove is stored for insect repellant solution the storage box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810299572.2A CN108716626A (en) | 2018-04-04 | 2018-04-04 | A kind of lighting system for keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810299572.2A CN108716626A (en) | 2018-04-04 | 2018-04-04 | A kind of lighting system for keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108716626A true CN108716626A (en) | 2018-10-30 |
Family
ID=63898764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810299572.2A Pending CN108716626A (en) | 2018-04-04 | 2018-04-04 | A kind of lighting system for keyboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108716626A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0887586A3 (en) * | 1997-06-27 | 2000-11-02 | Beghelli S.p.A. | Lighting device for environments provided with video terminals |
| WO2001063173B1 (en) * | 2000-02-25 | 2001-12-13 | Miroslav Rusevljan | Light and shade for a pc task area |
| CN101350265B (en) * | 2007-07-17 | 2012-06-20 | 鸿富锦精密工业（深圳）有限公司 | Luminous keyboard |
| CN104470117A (en) * | 2014-11-28 | 2015-03-25 | 成都创图科技有限公司 | Intelligent sensing type energy-saving lighting system based on logic protection emitter-coupled type |
| CN104244526B (en) * | 2014-09-12 | 2016-07-13 | 山东智慧生活数据系统有限公司 | A kind of intelligent vicarious energy efficient lighting system |
-
2018
- 2018-04-04 CN CN201810299572.2A patent/CN108716626A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0887586A3 (en) * | 1997-06-27 | 2000-11-02 | Beghelli S.p.A. | Lighting device for environments provided with video terminals |
| WO2001063173B1 (en) * | 2000-02-25 | 2001-12-13 | Miroslav Rusevljan | Light and shade for a pc task area |
| CN101350265B (en) * | 2007-07-17 | 2012-06-20 | 鸿富锦精密工业（深圳）有限公司 | Luminous keyboard |
| CN104244526B (en) * | 2014-09-12 | 2016-07-13 | 山东智慧生活数据系统有限公司 | A kind of intelligent vicarious energy efficient lighting system |
| CN104470117A (en) * | 2014-11-28 | 2015-03-25 | 成都创图科技有限公司 | Intelligent sensing type energy-saving lighting system based on logic protection emitter-coupled type |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181030 |