CN204887608U - LED lamp is extinguish in time delay - Google Patents
LED lamp is extinguish in time delay Download PDFInfo
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- CN204887608U CN204887608U CN201520628337.7U CN201520628337U CN204887608U CN 204887608 U CN204887608 U CN 204887608U CN 201520628337 U CN201520628337 U CN 201520628337U CN 204887608 U CN204887608 U CN 204887608U
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- led
- described led
- drive circuit
- light
- led lamp
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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
Abstract
The utility model discloses a LED lamp is extinguish in time delay, including the LED lamp, LED drive circuit, with LED lamp electricity is connected for the drive of circular telegram back the luminous illumination of LED lamp, tank connects the LED lamp with between the LED drive circuit, be used for during the luminous illumination of LED lamp by LED drive circuit department obtains the electric energy and the energy storage of charging, works as after LED drive circuit cuts off the power supply, the direct drive the LED lamp makes extinguish after LED lamp time delay illumination a period. The utility model discloses avoided sitting room or passageway in the back of turning off the light, light will make the people hardly see object on every side clearly suddenly secretly down, causes the collision, causes bigger injury even.
Description
Technical field
The utility model relates to field of LED illumination, particularly a kind of delay-action LED.
Background technology
Generally, parlor or passageway are after turning off the light, and light will grow dark suddenly, make people be difficult to see clearly the object of surrounding like this, cause collision, even cause larger injury, particularly old man and child's harmfulness larger.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency existing in prior art, provides a kind of delay-action LED, is intended to avoid parlor or passageway after turning off the light, under light is suddenly dark, make people be difficult to see clearly the object of surrounding, cause collision, even cause larger injury.
In order to realize foregoing invention object, the technical solution adopted in the utility model is:
A kind of delay-action LED, comprises LED; LED drive circuit, is electrically connected with described LED, for the LED luminous lighting described in rear drive that is energized; Accumulator, be connected between described LED and described LED drive circuit, for obtaining electric energy and charging energy-storing by described LED drive circuit during described LED luminous lighting, when after described LED drive circuit power-off, LED described in Direct driver, extinguishes after making described LED Delayed illumination predetermined a period of time.
Described LED drive circuit comprises bridge rectifier, and described bridge rectifier one end connects 220V AC power, and the other end connects AC/DC Switching Power Supply, and described AC/DC Switching Power Supply is electrically connected with described LED by transformer and electric capacity C3 successively.
Described AC/DC Switching Power Supply adopts SM7513 power switch chip to form.
Described accumulator comprises electric capacity C4 and C5 of two series connection, and the positive pole of described electric capacity C4 connects the positive terminal of described LED by current-limiting resistance R3, the negative pole of described electric capacity C5 connects the negative pole end of described LED; The emitter of the positive pole of described electric capacity C4 also connecting triode, the base stage of described triode connects the positive terminal of described LED by resistance R6, the base stage of described triode also connects the negative pole end of described LED by resistance R7, the collector electrode of described triode connects the positive terminal of described LED by resistance R8, the capacitance size of wherein said electric capacity C4 with C5 is relevant to the length of described predetermined a period of time.
Described LED comprises at least two group light-emitting diodes of series connection, often organizes the light-emitting diode that light-emitting diode comprises a pair parallel connection.
Described LED comprises five groups of light-emitting diodes of series connection, often organizes the light-emitting diode that light-emitting diode comprises a pair parallel connection.
compared with prior art, the beneficial effects of the utility model:
The utility model is by arranging the accumulator be connected between described LED and described LED drive circuit, electric energy is obtained and charging energy-storing by described LED drive circuit during described LED luminous lighting, when after described LED drive circuit power-off, LED described in accumulator Direct driver, extinguish after making the described LED Delayed illumination scheduled time, thus avoid parlor or passageway after turning off the light, light will dark suddenly under, people is made to be difficult to see clearly the object of surrounding, cause collision, even cause larger injury.
accompanying drawing illustrates:
Fig. 1 is the delay-action LED lamp circuit block diagram in the utility model embodiment;
Fig. 2 is the delay-action LED lamp circuit schematic diagram in the utility model embodiment.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail.But this should be interpreted as that the scope of the above-mentioned theme of the utility model is only limitted to following embodiment, all technology realized based on the utility model content all belong to scope of the present utility model.
Delay-action LED as shown in Figure 1, comprises LED 101; LED drive circuit 102, is electrically connected with described LED 101, for LED 101 luminous lighting described in rear drive that is energized; Accumulator 103, be connected between described LED 101 and described LED drive circuit 102, for obtaining electric energy and charging energy-storing by described LED drive circuit 102 during described LED 101 luminous lighting, when after the power-off of described LED drive circuit 102, LED 101 described in Direct driver, extinguishes after making described LED 101 Delayed illumination predetermined a period of time.
The utility model is by arranging the accumulator be connected between described LED and described LED drive circuit, electric energy is obtained and charging energy-storing by described LED drive circuit during described LED luminous lighting, when after described LED drive circuit power-off, LED described in accumulator Direct driver, extinguish after making described LED Delayed illumination a period of time, thus avoid parlor or passageway after turning off the light, light will dark suddenly under, people is made to be difficult to see clearly the object of surrounding, cause collision, even cause larger injury.
Concrete, referring to Fig. 2, described LED drive circuit 102 comprises bridge rectifier D1, and described bridge rectifier one end connects 220V AC power, the other end connects AC/DC Switching Power Supply, and described AC/DC Switching Power Supply is electrically connected with described LED by transformer and electric capacity C3 successively.Described AC/DC Switching Power Supply adopts SM7513 power switch chip to form.SM7513 power switch chip is the high performance former limit FEEDBACK CONTROL power switch chip being applied to off-line type small-power AC/DC Switching Power Supply, realizes high precision constant current and export in full voltage input range, precision is less than ± and 5%, without the need to loop compensation.The present embodiment adopts SM7513 to be used as LED drive circuit, and its low price, circuit is simple.220V exchanges after D1 bridge rectifier, and obtain required direct voltage through electric capacity C1 filtering, this direct current is connected with SM7513 input, and transformer T1 and D1 etc. is connected with LED as output.Described LED comprises at least two group light-emitting diodes of series connection, often organizes the light-emitting diode that light-emitting diode comprises a pair parallel connection.LED described in the present embodiment comprises five groups of light-emitting diodes of series connection, often organizes the light-emitting diode that light-emitting diode comprises a pair parallel connection.LED two one group is in parallel, then 5 groups of series connection, constitutes a complete LED drive circuit.SM7513 is adopted to make the LED general lighting circuit of constant current output.Owing to adopting constant current to drive, so it has the high feature of efficiency, and volume is little, and debugging easily.
Described accumulator 103 comprises electric capacity C4 and C5 of two series connection, and the positive pole of described electric capacity C4 connects the positive terminal of described LED by current-limiting resistance R3, the negative pole of described electric capacity C5 connects the negative pole end of described LED; The emitter of the positive pole of described electric capacity C4 also connecting triode Q1, the base stage of described triode Q1 connects the positive terminal of described LED by resistance R6, the base stage of described triode Q1 also connects the negative pole end of described LED by resistance R7, the collector electrode of described triode Q1 connects the positive terminal of described LED by resistance R8, the capacitance size of wherein said electric capacity C4 with C5 is relevant to the length of described a period of time (i.e. delay time) of throwing light on.The utility model make use of the feature of super capacitor energy-storage, and after turning on light, store electrical energy on super capacitor, realizes normal illumination simultaneously.After turning off the light, the electric energy utilizing super capacitor to store makes LED continuous illumination a period of time, automatic distinguishing after people leaves.Whole circuit is all contained in LED bulb, installs also very convenient.
In the present embodiment, the length of the size of super capacitor C4 and C5 Delayed illumination is as required chosen, and selects the withstand voltage super capacitor for 5.5V, two series connection in the present embodiment, and if desired at electric capacity C4, C5 two ends parallel connection grading resistor, keeps voltage on two electric capacity equal.The brightness of two groups of LED below after the size of resistance R7 can have influence on and turn off the light.If changed a social system in ready-made LED bulb, need understand fully that physical circuit carries out again.
The operation principle of the utility model LED is: adopt C4, C5 bis-super capacitors, for energy storage, the voltage after powering on super capacitor raises gradually, until equal with the pressure drop on 4 groups of LED below time, charging terminates, and the voltage filled is about 9.6V.R3 is charging current limiter resistance.Due to the existence of resistance R6, R7, the ground level of Q1 obtains R6, the dividing potential drop of R7, base voltage is about 6V, and triode Q1 is in cut-off state, now circuit normal illumination, energising initial stage circuit can be super capacitor C4, C5 charging, is charging between unexpired, 4 groups of LED are by secretly to bright change below, until C4, C5 are full of, then entirely bright.Selecting 4 groups of LED places below to charge to super capacitor, is because often organize LED pressure drop to be about 2.4V, and 4 groups just withstand voltage after 9.6V, C4, C5 series connection is 11V, just in time in withstand voltage scope.To 3 groups of LED electric discharges below after turning off the light, instead of giving 4 groups of LED electric discharges below, is because of during directly to 4 groups of LED electric discharges, electric capacity C4, C5 are put into identical with the pressure drop of 4 groups of LED soon, no current again on LED, the electric energy of the upper storage of electric capacity C4, C5 cannot discharge completely, so can only to 3 groups of LED electric discharges.After turning off the light, C3 both end voltage disappears, and R6 upper end does not just have voltage yet, and R7 is connected on negative terminal, and the ground level of triode Q1 is low level, due to the existence of the upper voltage of C4, C5, makes Q1 conducting.Now super capacitor C4, C5 pass through the emitting stage of Q1 to collector electrode, then through R8 to 3 groups of LED electric discharges below, now 2 groups of LED are luminous below, continue maintenance illumination.Owing to only having 3 groups of LED luminous, so brightness is down to original less than 3/5, and along with the consumption of super capacitor C4, C5 electric energy, LED luminance is more and more lower, extinguishes after the several seconds.
By reference to the accompanying drawings embodiment of the present utility model is described in detail above, but the utility model is not restricted to above-mentioned execution mode, in the spirit and scope situation of claim not departing from the application, those skilled in the art can make various amendment or remodeling.
Claims (6)
1. a delay-action LED, is characterized in that, comprising:
LED;
LED drive circuit, is electrically connected with described LED, for the LED luminous lighting described in rear drive that is energized;
Accumulator, be connected between described LED and described LED drive circuit, for obtaining electric energy and charging energy-storing by described LED drive circuit during described LED luminous lighting, when after described LED drive circuit power-off, LED described in Direct driver, extinguishes after making described LED Delayed illumination predetermined a period of time.
2. delay-action LED according to claim 1, it is characterized in that, described LED drive circuit comprises bridge rectifier, described bridge rectifier one end connects 220V AC power, the other end connects AC/DC Switching Power Supply, and described AC/DC Switching Power Supply is electrically connected with described LED by transformer and electric capacity C3 successively.
3. delay-action LED according to claim 2, is characterized in that, described AC/DC Switching Power Supply adopts SM7513 power switch chip to form.
4. the delay-action LED according to any one of claim 1-3, it is characterized in that, described accumulator comprises electric capacity C4 and C5 of two series connection, the positive pole of described electric capacity C4 connects the positive terminal of described LED by current-limiting resistance R3, the negative pole of described electric capacity C5 connects the negative pole end of described LED; The emitter of the positive pole of described electric capacity C4 also connecting triode, the base stage of described triode connects the positive terminal of described LED by resistance R6, the base stage of described triode also connects the negative pole end of described LED by resistance R7, the collector electrode of described triode connects the positive terminal of described LED by resistance R8, the capacitance size of wherein said electric capacity C4 with C5 is relevant to the length of described predetermined a period of time.
5. delay-action LED according to claim 4, is characterized in that, described LED comprises at least two group light-emitting diodes of series connection, often organizes the light-emitting diode that light-emitting diode comprises a pair parallel connection.
6. delay-action LED according to claim 5, is characterized in that, described LED comprises five groups of light-emitting diodes of series connection, often organizes the light-emitting diode that light-emitting diode comprises a pair parallel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520628337.7U CN204887608U (en) | 2015-08-20 | 2015-08-20 | LED lamp is extinguish in time delay |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520628337.7U CN204887608U (en) | 2015-08-20 | 2015-08-20 | LED lamp is extinguish in time delay |
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| CN204887608U true CN204887608U (en) | 2015-12-16 |
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| CN201520628337.7U Active CN204887608U (en) | 2015-08-20 | 2015-08-20 | LED lamp is extinguish in time delay |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793423A (en) * | 2017-02-09 | 2017-05-31 | 中山自信照明科技有限公司 | Intelligent luminaire |
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- 2015-08-20 CN CN201520628337.7U patent/CN204887608U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793423A (en) * | 2017-02-09 | 2017-05-31 | 中山自信照明科技有限公司 | Intelligent luminaire |
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