CN202941022U - Flashing and stepless constant-current LED portable lamp - Google Patents
Flashing and stepless constant-current LED portable lamp Download PDFInfo
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- CN202941022U CN202941022U CN2012206679135U CN201220667913U CN202941022U CN 202941022 U CN202941022 U CN 202941022U CN 2012206679135 U CN2012206679135 U CN 2012206679135U CN 201220667913 U CN201220667913 U CN 201220667913U CN 202941022 U CN202941022 U CN 202941022U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model relates to a flashing and stepless constant-current LED portable lamp, and pertains to the control and driving circuit of a portable lighting lamp adopting a high-energy lithium battery and a high-efficiency LED light source. According to the design of the utility model, a 555 time-based integrated circuit is combined with an adjustable LED constant-current QX7136 driver, so not only the continuous brightness adjustment of the LED can be realized, and but also the function of controlling the LED flashing and the function of preventing the overdischarge of a power supply battery can be realized. According to the utility model, less circuit element is used, advantages of multiple realizable functions and small size can be realized, and the flashing and stepless constant-current LED portable lamp can be used in the control and driving of a portable lighting lamp adopting a high-energy lithium battery and a high-efficiency LED light source.
Description
Technical field
The utility model relates to the control drive circuit of a kind of flash of light, stepless constant-current LED portable lamp, furthermore, is the driving circuits that adopts the portable illuminating lamp of high power lithium battery and high efficiency LED light source.
Background technology
LED light source has luminous efficiency, and high (light efficiency of incandescent lamp is 7.5-15lm/W, LED light source is efficiency 70-120lm/W), long service life (the approximately 500 hours useful life of incandescent lamp, and LED light source useful life be 50000 hours), the characteristics such as non-maintaining.It is large that high power lithium battery has energy density, long service life, and itself becomes the characteristics of solid encapsulation.Therefore, LED light source being combined with high power lithium battery, producing portable illuminating lamp multiple functional, superior performance, is the developing direction of portable illuminating lamp.
As Warom Technology Incorporated Company, LED light source is combined with high power lithium battery, produced the portable LED lighting lamp with high effeciencies such as " BAD212 miniature explosion-proof dimming work lamp ", " BAD308E anti-explosion dimming work lamp ", its total weight only has 90 grams, and volume is only 60 * 40 * 45mm
3, it is 80lm, time to reach the Portable light source for lighting of 5 hours that luminous flux but can be provided.But blemish in an otherwise perfect thing, the desk lamp with dimmer switch of the function of declaring, there is light modulation, actual only have " high light (1W) " and " work light (0.5W) " two grades; And the LED light source constant-current device is not set, and because the LED light source dynamic electric resistor is very little, the fluctuation that cell voltage is less, can make the brightness of light that significant the variation occurs.Simultaneously, this lamp does not have flash function, can not warn as danger, wrecked alarm light source.
Summary of the invention
The main purpose of the utility model design is: overcome the deficiency of existing LED portable lamp, design a kind of Multifunctional LED portable lamp drive circuit that flash of light, stepless brilliance adjustment and brightness do not reduce with the cell voltage reduction that has.
For realizing the present utility model purpose, technical solution adopted in the utility model is:
A kind of flash of light, stepless constant-current LED portable lamp, include 555 time-base integrated circuits, adjustable LED constant current QX7136 driver, solid-state high power lithium battery E, LED source LED, potentiometer W1, control switch K1, K2, capacitor C 1, C2, C3, diode D1, D2, resistance R 1, R2, R3.555 time-base integrated circuits and diode D1, D2, potentiometer W1, capacitor C 2, C3 and resistance R 1, R2 form a duty ratio can be by the stepless adjustment of W1, multivibrator that frequency is the 400-4000Hz left and right; Concrete connecting relation is: after 6 pin of 555 integrated circuits, 2 pin are linked together, with the negative pole of power supply, be connected to capacitor C 3, resistance R 1, potentiometer W1, resistance R 2 and after diode D2 connects, be connected between positive source and 2,6 pin; Potentiometer W1 central slide pin connects with 7 pin of 555 integrated circuits; Also be connected to diode D1 between 7 pin and 2,6 pin; Its potentiometer W1 is for adjusting the duty ratio of multivibrator; Resistance R 3 and adjustable LED constant current QX7136 driver form the drive circuit of LED source LED; Control switch K1 is as the power control switch in whole loop; 3 pin in adjustable LED constant current QX7136 driver directly are connected with 3 pin of 555 time-base integrated circuits, and control switch K1, with after capacitor C 1 is connected, is connected in parallel on capacitor C 3 two ends; The capacity of capacitor C 1 is about 1000 times of capacitor C3, and when control switch K1 connects, the frequency of its multivibrator is reduced to 0.4-4Hz.
A kind of flash of light, stepless constant-current LED portable lamp, at the external expansion stream of the 4 pin metal-oxide-semiconductor of adjustable LED constant current QX7136 driver, more than output current can expand 3.0A to.
A kind of flash of light, stepless constant-current LED portable lamp, include 555 time-base integrated circuits, adjustable LED constant current QX7136 driver, solid-state high power lithium battery E, LED source LED, adjustable resistance W2, control switch K1, K2, capacitor C 1, C2, and resistance R 1, R2, R3; Resistance R 3, adjustable resistance W2 and adjustable LED constant current QX7136 driver form the drive circuit of electric current continuously adjustable LED source LED in the 10-400mA scope; Control switch K1 is as the power control switch in whole loop; 555 time-base integrated circuits and capacitor C 1, C2, resistance R 1, R2 form a multivibrator that frequency is 0.4-4Hz, and are in series with control switch K2 between the public negative pole of circuit and control circuit negative pole; 3 pin in described LED constant-flow driver QX7136 directly are connected with 3 pin of 555 time-base integrated circuits, and are connected to resistance R 4 between positive source and its connecting line; Control switch K1, with after capacitor C 1 is connected, is connected in parallel on capacitor C 3 two ends.
A kind of flash of light, stepless constant-current LED portable lamp, at the external expansion stream of the 4 pin metal-oxide-semiconductor of adjustable LED constant current QX7136 driver, more than output current can expand 3.0A to.
A kind of flash of light, stepless constant-current LED portable lamp, described 555 time-base integrated circuits should adopt minimum operating voltage lower than the integrated circuit of 2 volts.
Because the minimum operating voltage of 555 time-base integrated circuits (NE555) of routine is 4.5V, and the minimum operating voltage of the permission of solid-state high power lithium battery E is 2.7 volts, for guaranteeing the normal operation of this circuit, therefore, must select derivative, adopt
CMOS555 time-base integrated circuits design, low-work voltage, as: the minimum operating voltage of TLC555 is only 2V, and the minimum operating voltage of CSS555 is only 1.2V.
Because the output current of adjustable LED constant current QX7136 driver is constant, make the brightness of LED can not change because of the fluctuation of cell voltage; Simultaneously, adjustable LED constant current QX7136 driver, during lower than 2.7 volts, automatically shut down LED light source at its 3 pin voltage, can effectively avoid the overdischarge phenomenon of solid-state high power lithium battery E.
The accompanying drawing explanation:
The theory structure schematic diagram that Fig. 1 is the utility model embodiment mono-;
The theory structure schematic diagram that Fig. 2 is the utility model embodiment bis-;
The theory structure schematic diagram that Fig. 3 is the utility model embodiment tri-;
The theory structure schematic diagram that Fig. 4 is the utility model embodiment tetra-.
Embodiment:
Embodiment mono-: as shown in Figure 1, LED light source is selected the high efficiency light source of 1W, and its rated operational current is 300mA.The resistance of resistance R 3 is elected 0.15 Ω as, adjustable LED constant current QX7136 driver by the current constant by LED in the 300mA left and right.555 time-base integrated circuits are selected TLC555, and its minimum operating voltage is only 2V.The resistance value that potentiometer W1 selects is 200K Ω, the resistance that resistance R 1, R2 select is 10K Ω, like this, the duty ratio of the multivibrator consisted of 555 time-base integrated circuits and subsidiary component thereof can be adjustable continuously between 5-95%, the average power of LED light source (brightness) can be between 5-95% continuous setup.
The capacity of capacitor C 1 is selected 6.8 μ F, and the capacity of capacitor C 3 is selected 6.8 η F; When capacitor C 1 does not access, the operating frequency of multivibrator is the 1000Hz left and right, and because operating frequency is higher, the imperceptible LED lamp of people is in flash of light; When capacitor C 1 access, its operating frequency is reduced to 1Hz, and people can feel that the LED lamp is in flash of light.
Embodiment bis-: as shown in Figure 2, LED light source is selected the high efficiency light source of 1W.The resistance of resistance R 3 is elected 0.15 Ω as, and the resistance of adjustable resistance W2 is elected 3 Ω as, and like this, after adjustable LED constant current QX7136 driver control, the electric current by LED can pass through adjustable resistance W2, makes its continuous setup between 15-300mA.555 time-base integrated circuits are selected TLC555.The resistance value that resistance R 1 is selected is 150K Ω, the resistance that resistance R 2 is selected is 68K Ω, the capacity of capacitor C 1 is selected 6.8 μ F, like this, the multivibrator operating frequency consisted of 555 time-base integrated circuits and subsidiary component thereof is the 1Hz left and right, and its duty ratio is about 1/4, when control switch K2 connects, people can see that the LED lamp, after bright 0.25 second, extinguishes the phosphere of 0.75 second.
Embodiment tri-: as shown in Figure 3, LED light source is selected the high efficiency light source of 3W, its rated operational current is 700mA, be greater than the rated current 400mA of adjustable LED constant current QX7136 driver, therefore, need be at the external expansion of the 4 pin stream metal-oxide-semiconductor of adjustable LED constant current QX7136 driver, make more than its output current expands 700mA to.The resistance of resistance R 3 is elected 0.068 Ω as, adjustable LED constant current QX7136 driver by the current constant by LED in the 700mA left and right.Other component parameters and the embodiment mono-of this circuit are identical.
Embodiment tetra-: as shown in Figure 4, LED light source is selected the high efficiency light source of 3W, its rated operational current is 700mA, be greater than the rated current 400mA of adjustable LED constant current QX7136 driver, therefore, need be at the external expansion of the 4 pin stream metal-oxide-semiconductor of adjustable LED constant current QX7136 driver, make more than its output current expands 700mA to.The resistance of resistance R 3 is elected 0.068 Ω as, and the resistance of adjustable resistance W2 is elected 1.2 Ω as, and like this, after adjustable LED constant current QX7136 driver control, the electric current by LED can pass through adjustable resistance W2, makes its continuous setup between 40-700mA.Other component parameters and the embodiment bis-of this circuit are identical.
Control procedure and effect:
The described flash of light of execution mode one, stepless constant-current LED portable lamp effect and course of action are: resistance R 3 and adjustable LED constant current QX7136 driver form the drive circuit of LED source LED, and the size of its electric current can change by the resistance of adjusting resistance R3.The adjustable multivibrator of duty ratio that the elements such as 555 time-base integrated circuits and potentiometer W1 form, a duty ratio adjustable level signal of output on its 3 pin, because 3 pin in adjustable LED constant current QX7136 driver directly are connected with 3 pin of 555 time-base integrated circuits, when 3 pin of 555 time-base integrated circuits are exported high level, constant-flow driver QX7136 work, make in LED light source by the electric current determined by R3 resistance; And, when 3 pin output low level of 555 time-base integrated circuits, because power supply (3 pin) the side voltage of constant-flow driver QX7136 is less than 2.7V and quits work, the electric current passed through in LED light source is zero.When control switch K2 access failure, because the frequency of multivibrator is 400-4000Hz, but by adjusting potentiometer W1 continuous setup by the duty ratio of LED light source electric current, i.e. brightness.When control switch K1 connects, the frequency of its multivibrator is reduced to 0.4-4Hz, can see the flash effect of LED.
The described flash of light of execution mode two, stepless constant-current LED portable lamp effect and course of action are: when control switch K2 access failure, element that 555 time-base integrated circuits connect with it form multivibrator, because there is no power supply, and quit work; Because 3 pin and the positive source of adjustable LED constant current QX7136 driver is connected to resistance R 4, adjustable LED constant current QX7136 driver still can be worked, and its output current (brightness of LED lamp) can carry out stepless adjustment by adjusting adjustable resistance W2.When control switch K1 connects, multivibrator is worked because obtaining power supply, and the 3 pin output frequencies at 555 time-base integrated circuits are the 0.4-4Hz control signal, control the work of adjustable LED constant current QX7136 driver and stop, making it can see the flash effect of LED.During because of control switch K2 access failure, 555 time-base integrated circuits do not have working power, have further reduced the operating current of circuit, reach the purpose that extends battery working time.
Claims (5)
1. a flash of light, stepless constant-current LED portable lamp, include 555 time-base integrated circuits, adjustable LED constant current QX7136 driver, solid-state high power lithium battery E, LED source LED, potentiometer W1, control switch K1, K2, capacitor C 1, C2, C3, diode D1, D2, resistance R 1, R2, R3; Described 555 time-base integrated circuits and diode D1, D2, potentiometer W1, capacitor C 2, C3 and resistance R 1, R2 form a duty ratio can be by the stepless adjustment of W1, multivibrator that frequency is 400-4000Hz; Described resistance R 3 and adjustable LED constant current QX7136 driver form the constant-current drive circuit of LED source LED; Control switch K1 is as the power control switch in whole loop; It is characterized in that: 3 pin in described LED constant-flow driver QX7136 directly are connected with 3 pin of 555 time-base integrated circuits, and control switch K1, with after capacitor C 1 is connected, is connected in parallel on capacitor C 3 two ends, and the capacity of capacitor C 1 is about 1000 times of capacitor C 3.
2. flash of light according to claim 1, stepless constant-current LED portable lamp is characterized in that: at the external expansion stream of the 4 pin metal-oxide-semiconductor of adjustable LED constant current QX7136 driver, more than output current can expand 3.0A to.
3. a flash of light, stepless constant-current LED portable lamp, include 555 time-base integrated circuits, adjustable LED constant current QX7136 driver, solid-state high power lithium battery E, LED source LED, adjustable resistance W2, control switch K1, K2, capacitor C 1, C2, and resistance R 1, R2, R3; Described resistance R 3, adjustable resistance W2 and adjustable LED constant current QX7136 driver form the drive circuit of electric current continuously adjustable LED source LED in the 10-400mA scope; Described control switch K1 is as the power control switch in whole loop; It is characterized in that: described 555 time-base integrated circuits and capacitor C 1, C2, resistance R 1, R2 form a multivibrator that frequency is 0.4-4Hz, and are in series with control switch K2 between the public negative pole of circuit and control circuit negative pole; 3 pin in described LED constant-flow driver QX7136 directly are connected with 3 pin of 555 time-base integrated circuits, and are connected to resistance R 4 between positive source and its connecting line.
4. flash of light according to claim 2, stepless constant-current LED portable lamp is characterized in that: at the external expansion stream of the 4 pin metal-oxide-semiconductor of adjustable LED constant current QX7136 driver, more than output current can expand 3.0A to.
5. according to claim 1 and 2 described flashes of light, stepless constant-current LED portable lamp, it is characterized in that: described 555 time-base integrated circuits should adopt minimum operating voltage lower than the integrated circuit of 2 volts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206679135U CN202941022U (en) | 2012-11-12 | 2012-11-12 | Flashing and stepless constant-current LED portable lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206679135U CN202941022U (en) | 2012-11-12 | 2012-11-12 | Flashing and stepless constant-current LED portable lamp |
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| CN202941022U true CN202941022U (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012206679135U Expired - Fee Related CN202941022U (en) | 2012-11-12 | 2012-11-12 | Flashing and stepless constant-current LED portable lamp |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103687233A (en) * | 2013-12-12 | 2014-03-26 | 上思县东岽电子科技有限责任公司 | Pulse-width-adjustment automatic dimming LED illuminating lamp driven by constant-current power supply |
| CN104735844A (en) * | 2013-12-18 | 2015-06-24 | 黄焕珠 | Automatic dimming LED road lamp with energy really saved |
| CN104812150A (en) * | 2015-05-21 | 2015-07-29 | 周芸 | LED (light-emitting diode) dimming flashlight |
| CN104869698A (en) * | 2015-04-20 | 2015-08-26 | 付志民 | Medical headlamp circuit |
| CN104902636A (en) * | 2015-06-08 | 2015-09-09 | 廖婕 | Portable LED reading lamp |
| CN105898938A (en) * | 2014-11-24 | 2016-08-24 | 李顺华 | Driving circuit of ballast type LED lamp |
-
2012
- 2012-11-12 CN CN2012206679135U patent/CN202941022U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103687233A (en) * | 2013-12-12 | 2014-03-26 | 上思县东岽电子科技有限责任公司 | Pulse-width-adjustment automatic dimming LED illuminating lamp driven by constant-current power supply |
| CN104735844A (en) * | 2013-12-18 | 2015-06-24 | 黄焕珠 | Automatic dimming LED road lamp with energy really saved |
| CN105898938A (en) * | 2014-11-24 | 2016-08-24 | 李顺华 | Driving circuit of ballast type LED lamp |
| CN104869698A (en) * | 2015-04-20 | 2015-08-26 | 付志民 | Medical headlamp circuit |
| CN104812150A (en) * | 2015-05-21 | 2015-07-29 | 周芸 | LED (light-emitting diode) dimming flashlight |
| CN104902636A (en) * | 2015-06-08 | 2015-09-09 | 廖婕 | Portable LED reading lamp |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20141112 |
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| EXPY | Termination of patent right or utility model |