CN112503413A - LED flashlight capable of realizing stepless dimming - Google Patents
LED flashlight capable of realizing stepless dimming Download PDFInfo
- Publication number
- CN112503413A CN112503413A CN202011348638.6A CN202011348638A CN112503413A CN 112503413 A CN112503413 A CN 112503413A CN 202011348638 A CN202011348638 A CN 202011348638A CN 112503413 A CN112503413 A CN 112503413A
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- China
- Prior art keywords
- led lamp
- pin
- capacitor
- flashlight
- integrated circuit
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L4/00—Electric lighting devices with self-contained electric batteries or cells
- F21L4/08—Electric lighting devices with self-contained electric batteries or cells characterised by means for in situ recharging of the batteries or cells
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- 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
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- 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
- F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
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- 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
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
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- 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
- F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
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- 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
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- 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
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
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- 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
A stepless dimming LED flashlight comprises a flashlight shell, wherein an LED lamp panel is arranged in a front cavity of the flashlight shell, a battery is arranged in a rear cavity of the flashlight shell, a switch button is arranged on the flashlight shell, a stepless dimming control panel is connected to the LED lamp panel, the stepless dimming control panel comprises a main controller for controlling an LED lamp, and the main controller is connected with the switch button; the input end of the power supply circuit is connected with the battery, and the output end of the power supply circuit is connected with the main controller; and the input end of the LED lamp driving circuit is connected with the main controller, and the output end of the LED lamp driving circuit is connected with the LED lamp. The invention has simple structure and small volume, does not need to add any dimming equipment or dimming switch, can carry out stepless light adjustment by only using the power switch on the flashlight, and meets the requirements of users on different brightness.
Description
Technical Field
The invention belongs to the technical field of general electric light sources, and particularly relates to an LED flashlight capable of stepless dimming.
Background
An LED (light emitting diode) illuminating lamp is an illuminating lamp made of a fourth generation green light source LED, wherein the LED is called as a fourth generation illuminating light source or a green light source, and has the characteristics of energy conservation, environmental protection, long service life, small volume and the like. With the increasing demand for environmental protection and the further increase of energy shortage, the market of energy-saving and environment-friendly products becomes more and more active, and the LED lamp is increased at a speed of 50% every year to gradually replace the traditional light source. The LED lamp adopts an ultra-high brightness high-power LED light source, the service life of the LED lamp is more than 5 ten thousand hours, the LED lamp is matched with a high-efficiency power supply, the energy is saved by 80 percent compared with the traditional incandescent lamp, the brightness of the LED lamp is 10 times higher than that of the incandescent lamp and a common lighting lamp under the same power, ultraviolet rays and infrared rays do not exist in an LED spectrum, heat and radiation do not exist, the glare is small, waste can be recycled, no pollution is caused, mercury elements are contained, and a cold light source can be safely touched and belongs to a typical.
At present, various LED flashlights in the market basically realize uniform brightness, can not adjust light, and can not meet the light requirements of users for using different brightness at different time periods.
Disclosure of Invention
The invention aims to overcome the defects of the existing LED flashlight and provide the LED flashlight with stepless dimming, which has the advantages of reasonable design, low cost and simple operation.
The technical scheme for solving the technical problems is as follows: a stepless dimming LED flashlight comprises a flashlight shell, wherein an LED lamp panel is arranged in a front cavity of the flashlight shell, a battery is arranged in a rear cavity of the flashlight shell, a switch button is arranged on the flashlight shell, a stepless dimming control panel is connected to the LED lamp panel, the stepless dimming control panel comprises a main controller for controlling an LED lamp, and the main controller is connected with the switch button; the input end of the power supply circuit is connected with the battery, and the output end of the power supply circuit is connected with the main controller; and the input end of the LED lamp driving circuit is connected with the main controller, and the output end of the LED lamp driving circuit is connected with the LED lamp.
As a preferred technical solution, the LED lamp driving circuit is: a pin 2 and a pin 4 of an integrated circuit U2 are connected with a pin 1 and a pin 4 of an integrated circuit U3 through a resistor R1 and connected with a 12V power supply and one end of a capacitor C5, a pin 3 is connected with the other end of a capacitor C5 and the ground through a resistor R2, the pin 7 is connected with the ground through a resistor R3, a pin 5 and a pin 6 are connected with one end of an inductor L1 and the anode of a diode D2, the cathode of the diode D2 is connected with the anode of an LED lamp and the 12V power supply, the other end of the inductor L1 is connected with one end of the capacitor C1 and the cathode of the LED lamp, the other end of the capacitor C1 is connected with the 12V power supply, the type of the integrated circuit U2 is BP2838, and the type of the integrated circuit U.
As a preferable technical scheme, a 3-pin capacitor C2 of an integrated circuit U1 is connected with one end of a 12V power supply in parallel, a 2-pin capacitor C3 is connected with one end of the output 5V power supply in parallel, a 1-pin capacitor C2 and the other end of a capacitor C3 are connected with the other end of the output 5V power supply in parallel and grounded, and the model of the integrated circuit U1 is LM 7805.
As a preferred technical scheme, the model of the main controller is PIC10F 220T-I/OT.
The invention has the following beneficial effects:
the invention has simple structure and small volume, does not need to add any dimming equipment or dimming switch, can carry out stepless light adjustment by only using the power switch on the flashlight, and meets the requirements of users on different brightness.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an electrical schematic block diagram of the electrodeless dimming control panel 3 of the present invention.
Fig. 3 is an electrical schematic circuit diagram of the electrodeless dimming control panel 3 of the present invention.
Detailed Description
The present invention will be described in further detail below with reference to the drawings and examples, but the present invention is not limited to the embodiments described below.
In fig. 1, the electrodeless dimming LED flashlight of the present embodiment is formed by connecting a flashlight housing 1, an LED lamp panel 2, an electrodeless dimming control panel 3, a switch button 4, and a battery 5. An LED lamp panel 2 is installed in a front cavity of the flashlight casing 1, an electrodeless dimming control panel 3 is connected to the LED lamp panel 2, a battery 5 is installed in a rear cavity of the flashlight casing 1, and a switch button 4 is installed on the flashlight casing 1.
In fig. 2 and 3, the electrodeless dimming control panel 3 of this embodiment is formed by connecting a main controller, a power circuit and an LED lamp driving circuit, wherein an input end of the power circuit is connected to the battery 5, an output end of the power circuit is connected to the main controller, the main controller is connected to the switch button 4, an input end of the LED lamp driving circuit is connected to the main controller, and an output end of the LED lamp driving circuit is connected to the LED lamp panel 2.
The LED lamp driving circuit of the embodiment is formed by connecting an integrated circuit U2, resistors R1-R3, a capacitor C1, a capacitor C5, an inductor L1 and a diode D2, wherein the model of the integrated circuit U2 is BP2838, a pin 2 of the integrated circuit U2 is connected with a main controller, a pin 4 is connected with a 12V power supply through a resistor R1 and connected with one end of a capacitor C5, a pin 3 is connected with the other end of the capacitor C5 and the ground through a resistor R2, a pin 1 is grounded, a pin 7 is connected with the ground through a resistor R3, a pin 5 and a pin 6 are connected with one end of an inductor L1 and connected with the anode of a diode D2, the cathode of the diode D2 is connected with the anode of an LED lamp D1 and a 12V power supply, the other end of the inductor L1 is connected with one end of the capacitor C5 and the cathode of the LED lamp. When the internal MOS tube of the integrated circuit U2 is turned on, the battery 5 directly supplies power to the LED lamp D1, the inductor L1 and the capacitor C1 store energy, and when the internal MOS tube of the integrated circuit U2 is turned off, the inductor L1 and the capacitor C1 supply power to the LED lamp D1 through the diode D2.
The main controller of the embodiment is formed by connecting an integrated circuit U3, a capacitor C4 and a resistor R4, wherein the model of the integrated circuit U3 is PIC10F220T-I/OT, a pin 3 of the integrated circuit U3 is connected with one end of a switch button S1 and is connected with a 5V power supply through a resistor R4, a pin 2 of the integrated circuit U3 is connected with one end of a capacitor C4 and is grounded, a pin 5 is connected with the other end of the capacitor C4 and is connected with the 5V power supply in parallel, and a pin 1 is connected with a pin 2 of the integrated circuit U2.
The power supply circuit of the implementation is formed by connecting an integrated circuit U1, a capacitor C2 and a capacitor C3, wherein the model of the integrated circuit U1 is LM7805, a pin 3 of the integrated circuit U1 is connected with one end of a capacitor C2 in parallel and connected with a 12V power supply, a pin 2 is connected with one end of a capacitor C3 in parallel and outputs a 5V power supply, and a pin 1 is connected with the other ends of the capacitor C2 and the capacitor C3 in parallel and connected with the ground.
The working principle of the invention is as follows:
the battery 5 outputs 12V direct current to supply power to the LED lamp driving circuit, the integrated circuit U3 provides dimming signals for the pin 2 of the integrated circuit U2, when an internal MOS (metal oxide semiconductor) tube of the integrated circuit U2 is conducted, the battery directly supplies power to the LED lamp D1, the inductor L1 and the capacitor C1 store energy, and when the internal MOS tube of the integrated circuit U2 is turned off, the inductor L1 and the capacitor C1 supply power to the LED lamp D1 through the diode D2.
The integrated circuit U1 and its peripheral circuits supply power to the integrated circuit U3, the integrated circuit U3 detects the change of the switch button S1, if the potential state of the switch button S1 is detected to change 3 times continuously within 2 seconds, and enters a dimming mode, the integrated circuit U3 applies a PWM signal of 0.1kHz-1kHz to the pin 2 of the integrated circuit U2, the average current of the LED lamp D1 changes from 0% to 100% according to the duty ratio of the PWM signal, namely, the brightness of the LED lamp D1 is in a change state, when the brightness is the brightness required by the user, the user closes the switch button S1, the integrated circuit U3 stores the duty ratio of the signal sent to the integrated circuit U2, the user opens the switch button S1 again, the integrated circuit U3 outputs the stored electric signal to the pin 2 of the integrated circuit U2 from the pin 1, and the brightness of the LED lamp D1 is the brightness selected by the user.
Claims (4)
1. The utility model provides a LED flashlight of electrodeless dimming, the antechamber of flashlight casing (1) is provided with LED lamp plate (2), is provided with battery (5) in the back chamber, is provided with shift knob (4), its characterized in that on flashlight casing (1): the electrodeless dimming control panel (3) is connected to the LED lamp panel (2), the electrodeless dimming control panel (3) comprises a main controller for controlling the LED lamp, and the main controller is connected with the switch button (4); the input end of the power supply circuit is connected with the battery (5), and the output end of the power supply circuit is connected with the main controller; and the input end of the LED lamp driving circuit is connected with the main controller, and the output end of the LED lamp driving circuit is connected with the LED lamp.
2. The electrodeless dimming LED flashlight of claim 1, wherein: the LED lamp driving circuit is as follows: a pin 2 and a pin 4 of an integrated circuit U2 are connected with a pin 1 and a pin 4 of an integrated circuit U3 through a resistor R1 and connected with a 12V power supply and one end of a capacitor C5, a pin 3 is connected with the other end of a capacitor C5 and the ground through a resistor R2, the pin 7 is connected with the ground through a resistor R3, a pin 5 and a pin 6 are connected with one end of an inductor L1 and the anode of a diode D2, the cathode of the diode D2 is connected with the anode of an LED lamp and the 12V power supply, the other end of the inductor L1 is connected with one end of the capacitor C1 and the cathode of the LED lamp, the other end of the capacitor C1 is connected with the 12V power supply, the type of the integrated circuit U2 is BP2838, and the type of the integrated circuit U.
3. The electrodeless dimming LED flashlight of claim 1, wherein the power circuit is: a pin 3 of the integrated circuit U1 is connected with one end of a capacitor C2 in parallel and connected with a 12V power supply, a pin 2 is connected with one end of a capacitor C3 in parallel and outputs a 5V power supply, a pin 1 is connected with the other ends of the capacitor C2 and the capacitor C3 in parallel and connected with the ground, and the model of the integrated circuit U1 is LM 7805.
4. The electrodeless dimming LED flashlight of claim 1, wherein: the model of the main controller is PIC10F 220T-I/OT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011348638.6A CN112503413A (en) | 2020-11-26 | 2020-11-26 | LED flashlight capable of realizing stepless dimming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011348638.6A CN112503413A (en) | 2020-11-26 | 2020-11-26 | LED flashlight capable of realizing stepless dimming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112503413A true CN112503413A (en) | 2021-03-16 |
Family
ID=74966274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011348638.6A Withdrawn CN112503413A (en) | 2020-11-26 | 2020-11-26 | LED flashlight capable of realizing stepless dimming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112503413A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110291585A1 (en) * | 2010-05-26 | 2011-12-01 | Mass Technology (H.K.) Limited | Stepped dimming device for led lamp |
| CN104470092A (en) * | 2014-11-24 | 2015-03-25 | 宁波市柯玛士太阳能科技有限公司 | Electrodeless dimming electric torch and control circuit thereof |
| CN104797049A (en) * | 2015-04-20 | 2015-07-22 | 苏州汉瑞森光电科技有限公司 | Touch type electrodeless dimming control circuit used for LED lamp lighting |
| CN205610989U (en) * | 2016-04-16 | 2016-09-28 | 黄诚 | LED lamp with switch stepless dimming |
| CN210899757U (en) * | 2019-04-24 | 2020-06-30 | 无锡迅驰电子科技有限公司 | LED switch electrodeless dimming driving power supply |
-
2020
- 2020-11-26 CN CN202011348638.6A patent/CN112503413A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110291585A1 (en) * | 2010-05-26 | 2011-12-01 | Mass Technology (H.K.) Limited | Stepped dimming device for led lamp |
| CN104470092A (en) * | 2014-11-24 | 2015-03-25 | 宁波市柯玛士太阳能科技有限公司 | Electrodeless dimming electric torch and control circuit thereof |
| CN104797049A (en) * | 2015-04-20 | 2015-07-22 | 苏州汉瑞森光电科技有限公司 | Touch type electrodeless dimming control circuit used for LED lamp lighting |
| CN205610989U (en) * | 2016-04-16 | 2016-09-28 | 黄诚 | LED lamp with switch stepless dimming |
| CN210899757U (en) * | 2019-04-24 | 2020-06-30 | 无锡迅驰电子科技有限公司 | LED switch electrodeless dimming driving power supply |
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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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210316 |