CN205071369U - LED drive circuit with timing function - Google Patents

Abstract

The utility model relates to a LED drive circuit with timing function, it includes rectifier unit, drive unit, timing unit and display element. The electric main is connected to rectifier unit's input, and its output is connected respectively drive unit the timing unit with display element, the LED module is connected to drive unit's output. The output of timing unit is connected display element and the timing data transmission that the timing unit will generate extremely display element, the display element basis time information display is come out to the chronometric data. The utility model discloses a LED drive circuit with timing function can show lamps and lanterns live time and surplus quality guarantee time, makes things convenient for the staff to safeguard lamps and lanterns.

Description

A kind of LED drive circuit with clocking capability

Technical field

The utility model relates to a kind of LED drive circuit, particularly relates to a kind of LED drive circuit with clocking capability.

Background technology

Current LED lamp develops rapidly because it has the advantages such as energy-conservation, life-span is long, progressively expands the replacement to incandescent lamp and traditional energy-saving lamp.Why LED lamp can realize the replacement to incandescent lamp and electricity-saving lamp, and topmost reason is to have the extra long life not available for above-mentioned two kinds of lamps.Incandescent lamp average life span is 2000 hours, and electricity-saving lamp average life span is 8000 hours, and LED average life span then reaches 30000 hours.But present LED lamp in actual use, the long-life advantage of LED lamp often can not embody very intuitively.When especially having used multiple batches of light fixture in same place, want the concrete service time knowing some lamps, just needed to go to search corresponding data or lamp is taken apart to check label.The maintenance work of LED lamp is made to become very complicated like this.Such as, Chinese patent CN201320434630.0 discloses a kind of LED illumination device with clocking capability, and it comprises LED light source, controller, timing chip, display screen, AC-DC power supply changeover device and rectification circuit.This technical scheme can record the operating time of LED illumination device, but timing can not be worked when light fixture power-off, therefore cannot show the service time of LED illumination device since dispatching from the factory and residue quality guarantee time, inconvenient staff grasps the service condition of LED lamp.

Utility model content

For the deficiency of prior art, the utility model provides a kind of LED drive circuit with clocking capability, and it comprises rectification unit, driver element, timing unit and display unit,

The input of described rectification unit connects electric main, and its output connects described driver element, described timing unit and described display unit respectively, and the output of described driver element connects LED module,

The output of described timing unit connects described display unit and the chronometric data of generation is transferred to described display unit by described timing unit, and temporal information shows according to described chronometric data by described display unit.

According to a preferred implementation, described timing unit comprises a rechargeable battery.

According to a preferred implementation, described timing unit also comprises clear circuit.

According to a preferred implementation, described display unit is made up of 20 lamp pearl arrangements in column.

According to a preferred implementation, described lamp pearl is red and green color lamp pearl.

According to a preferred implementation, described red and green color lamp pearl adopts 3528 paster encapsulation.

According to a preferred implementation, described timing unit also comprises processing unit, when processing unit detects exceed useful life service time 90%, and the rear end red colored lamp flicker in described display unit,

When processing unit detects LED lamp failure, the red colored lamp flicker in described display unit.

According to a preferred implementation, described LED drive circuit also comprises input protection unit, and the input of described input protection unit connects electric main, and its output connects described rectification unit.

According to a preferred implementation, described input protection unit comprises fuse and piezo-resistance.

According to a preferred implementation, described display unit is LED display or LCD display.

The beneficial effects of the utility model are:

Timing unit comprises rechargeable battery, and timing can not be interrupted, and therefore display unit accurately can show service time and the residue quality guarantee time of LED lamp.Red colored lamp in display unit in use between can glimmer when exceeding useful life 90% and in LED lamp failure situation, be convenient to staff and LED lamp safeguarded.LED drive circuit comprises input protection unit, can prevent the surge current in electrical network, effectively protects back-end circuit equipment.LED drive circuit structure is simple, small volume, applied range.

Accompanying drawing explanation

Fig. 1 is the theory diagram of LED drive circuit of the present utility model; With

Fig. 2 is the show state figure of display unit.

Reference numerals list

10: input protection unit 20: rectification unit 30: driver element

40: timing unit 50: display unit

Embodiment

The utility model is further illustrated below in conjunction with accompanying drawing.As shown in Figure 1, the LED drive circuit with clocking capability of the present utility model comprises rectification unit 20, driver element 30, timing unit 40 and display unit 50.The input of rectification unit 20 connects electric main, and the output of rectification unit 20 connects driver element 30, timing unit 40 and display unit 50 respectively.Rectification unit is used for providing suitable operating voltage to aforementioned driver element 30, timing unit 40 and display unit 50.The output of driver element 30 connects LED module, makes the work of LED module energy normal luminous.The output of timing unit 40 connects display unit 50.Timing unit 40 generates chronometric data and transmits it to display unit 50, and display unit 50 is according to the service time of described chronometric data display light fixture and residue quality guarantee temporal information.

The LED drive circuit with clocking capability of the present utility model can be easy to demonstrate LED lamp service time and residue quality guarantee time, consumer and light fixture supplier can be allowed just can to obtain LED lamp more easily and use information.

As shown in Figure 1, the LED drive circuit with clocking capability of the present utility model comprises input protection unit 10, rectification unit 20, driver element 30, timing unit 40 and display unit 50.The front termination electric main live wire of input protection unit 10 and zero line, its rear end connects rectification unit 20.Input protection unit 10 specifically comprises fuse and piezo-resistance.The output of rectification unit 20 connects LED drive unit 30, timing unit 40 and display unit 50 respectively, to provide suitable operating voltage for it.Driver element 30 rear end is drive output, can directly be connected with LED module.Timing unit 40 output is connected to display unit 50.Display unit 50 can be LED display or LCD display.

Electric main is by input protection unit 10, and input protection unit 10 can prevent surge current in electrical network and high pulse voltage, and when there is unusual condition, can play a protective role to the circuit arrangement of rear end.Alternating current flow into rectification unit 20, and alternating current is converted to direct current by its rectifier bridge by rectification unit 20.The high voltage direct current that higher level flows into is converted to the lower direct current of voltage by LED drive unit 30, in order to drive the LED module of rear end.Rectification unit 20 output is also connected with timing unit 40 and display unit 50, to provide the suitable voltage needed for work for it.Timing unit 40 includes a rechargeable battery, and under the state do not lighted at light fixture like this, also can ensure that timing unit can normally work, timing is not interrupted.Meanwhile, timing unit 40 also comprises clear circuit, in order to the chronometric data starting point of the light fixture with LED drive circuit of the present utility model is set to 0 before dispatching from the factory.The red and green color lamp pearl arrangement in column that display unit 50 is encapsulated by 20 3528 pasters forms, and green represents the operating time, and red expression remains the quality guarantee time.Timing unit 40 also comprises processing unit, when processing unit detects exceed useful life service time 90%, and the rear end red colored lamp flicker in display unit 50.When processing unit detects LED lamp failure, the red colored lamp flicker in display unit 50.

As shown in Figure 2, light fixture measured according to 30000 hours useful life.In figure, A represents that light fixture has normally worked the useful life of 40%, then this light fixture has normally worked 12000 hours, also surplus 18000 hours quality guarantee time.In figure, B show state then represents that light fixture normally worked for 90% useful life, namely 27000 hours, and also surplus 3000 hours quality guarantee time, two red leds of end can glimmer simultaneously, reminds staff to need to prepare to safeguard this light fixture.In figure, C show state be light fixture when using 75% of useful life, namely break down after 22500 hours, the flicker of 15 red colored lamp.Staff needs to repair or replace this fault light fixture.

LED lamp is meeting self-clocking from energising, and timing also can continue to increase under light fixture is in the state of not working.Whether this product is more convenient within quality guarantee period to allow light fixture producer judge like this.By the time that timing control unit provides on display unit, demonstrate different states.When light fixture useful life more than 90% or light fixture breaks down time, display unit can be reminded with the form of flicker, reminds people to carry out light fixture in time and safeguards or change.

It should be noted that; above-mentioned specific embodiment is exemplary; those skilled in the art can find out various solution under the inspiration of the utility model disclosure, and these solutions also all belong to open scope of the present utility model and fall within protection range of the present utility model.It will be understood by those skilled in the art that the utility model specification and accompanying drawing thereof are illustrative and not form limitations on claims.Protection range of the present utility model is by claim and equivalents thereof.

Claims (10)

1. have a LED drive circuit for clocking capability, it comprises rectification unit (20), driver element (30), timing unit (40) and display unit (50), it is characterized in that,

The input of described rectification unit (20) connects electric main, its output connects described driver element (30), described timing unit (40) and described display unit (50) respectively, the output of described driver element (30) connects LED module

The output of described timing unit (40) connects described display unit (50) and the chronometric data of generation is transferred to described display unit (50) by described timing unit (40), and temporal information shows according to described chronometric data by described display unit (50).

2. LED drive circuit according to claim 1, is characterized in that, described timing unit (40) comprises a rechargeable battery.

3. LED drive circuit according to claim 2, is characterized in that, described timing unit (40) also comprises clear circuit.

4. LED drive circuit according to claim 3, is characterized in that, described display unit (50) is made up of 20 lamp pearl arrangements in column.

5. LED drive circuit according to claim 4, is characterized in that, described lamp pearl is red and green color lamp pearl.

6. LED drive circuit according to claim 5, is characterized in that, described red and green color lamp pearl adopts 3528 paster encapsulation.

7. according to the LED drive circuit one of claim 2 to 6 Suo Shu, it is characterized in that, described timing unit (40) also comprises processing unit, when processing unit detects exceed useful life service time 90%, red colored lamp flicker in described display unit (50)

When processing unit detects LED lamp failure, the red colored lamp flicker in described display unit (50).

8. LED drive circuit according to claim 1; it is characterized in that; described LED drive circuit also comprises input protection unit (10); the input of described input protection unit (10) connects electric main, and its output connects described rectification unit (20).

9. LED drive circuit according to claim 8, is characterized in that, described input protection unit (10) comprises fuse and piezo-resistance.

10. LED drive circuit according to claim 1, is characterized in that, described display unit (50) is LED display or LCD display.