CN201047496Y - LED electric torch - Google Patents
LED electric torch Download PDFInfo
- Publication number
- CN201047496Y CN201047496Y CNU200720050328XU CN200720050328U CN201047496Y CN 201047496 Y CN201047496 Y CN 201047496Y CN U200720050328X U CNU200720050328X U CN U200720050328XU CN 200720050328 U CN200720050328 U CN 200720050328U CN 201047496 Y CN201047496 Y CN 201047496Y
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- CN
- China
- Prior art keywords
- led
- battery
- inductance
- boosting
- integrated circuit
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses an electric LED torch which comprises a battery and at least one LED; a boosting-driven integrated circuit and an inductor are connected between the battery and the LED; the positive driving end and chip enabling end of the boosting-driven integrated circuit are simultaneously connected with the anode of the LED and one end of the inductor, and the other end of the inductor is connected with the anode of the battery; the cathode of the battery is connected with the ground terminal of the boosting-driven integrated circuit and the cathode of the LED. The utility model simplifies the structure of the circuit board of electric LED torch and the processing technique of circuit board, thus reducing the production cost of the electric LED torch; since the boosting-driven integrated circuit has stable performance, high reliability, simple connection and good production consistency, thus the performance of the electric LED torch is improved.
Description
Technical field
The utility model relates to the LED flashlight, relates in particular to the improvement of the boost circuit structure of LED flashlight.
Background technology
Flashlight is an indispensable illuminations during people live, work.Along with the LED technology is constantly full-fledged, LED is because advantages such as its power consumption is little, long service life obtain application more and more widely in flashlight.Because the forward voltage that LED starts is generally 2.8～3.8V, and the rated voltages of common two joint dry cells are 3V, thereby need be connected booster driving circuit between battery and LED.In the prior art, the booster circuit that is used for driving LED generally includes components and parts such as a plurality of resistance, electric capacity, triode, inductance, and component number is many, the processing technology complexity, and production efficiency is low, thereby wiring board cost of manufacture height.
The utility model content
The purpose of this utility model is exactly that the LED flashlight that a kind of circuit structure is simple, the wiring board cost of manufacture is low will be provided.
For reaching above-mentioned purpose, the utility model adopts following technical scheme: a kind of LED flashlight comprises battery and at least one LED; Be connected with boost a drive integrated circult and an inductance between battery and the LED; Anodal drive end and the chip enable end of drive integrated circult of boosting is connected with the positive pole of LED and an end of inductance simultaneously, and the other end of inductance is connected with the positive pole of battery; The negative pole of battery is connected with the ground end of the drive integrated circult that boosts and the negative pole of LED.
Described LED can have 2 to 8, is connected in parallel between each LED.
The rated voltage of described battery is 1.5V～3V.
The forward operating current of described arbitrary LED is preferably 20mA.
According to different instructions for uses, the inductance value selected value of described inductance is between 50～300 μ H.
LED flashlight of the present utility model, owing to adopt the drive integrated circult that boosts to substitute the booster circuit of forming by numerous components and parts of the prior art, only need add an inductance element, the change of the inductance value by inductance element can be satisfied the different requirements of LED flashlight.The utility model has been simplified the structure of LED flashlight wiring board, has simplified the processing technology of wiring board, thereby has reduced the production cost of LED flashlight; Drive integrated circult stable performance, reliability height owing to boost, connect simple, conformity of production is good, thereby the performance of LED flashlight also is improved.
Description of drawings
Fig. 1 is the circuit theory diagrams of LED flashlight of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is further described.
The circuit of LED flashlight of the present utility model constitutes as shown in Figure 1.Battery E is the dry cell of 1 to 2 joint 1.5V, and the specified forward operating current of LED D1, D2, D3 is 20mA, and three LED are connected in parallel.Be connected with boost a drive integrated circult HH001 and an inductance L between battery E and LED D1, D2, the D3; Boost behind the anodal drive end VOUT and chip enable end EN short circuit of drive integrated circult HH001, be connected with the positive pole of LED D1, D2, D3 and an end of inductance L simultaneously, the other end of inductance L then is connected with the positive pole of battery E; The negative pole of the ground end GND of the negative pole of battery E and the drive integrated circult HH001 that boosts and LED D1, D2, D3 is connected.The drive integrated circult HH001 that boosts can buy to the patentee.According to different load requests, inductance value L chooses between 50～300 μ H.
Claims (5)
1. a LED flashlight comprises battery and at least one LED; It is characterized in that: be connected with the drive integrated circult that boosts (HH001) and an inductance between battery and the LED; Anodal drive end (VOUT) and the chip enable end (EN) of drive integrated circult (HH001) of boosting is connected with the positive pole of LED and an end of inductance simultaneously, and the other end of inductance is connected with the positive pole of battery; The negative pole of battery is connected with the ground end (GND) of the drive integrated circult that boosts (HH001) and the negative pole of LED.
2. LED flashlight according to claim 1 is characterized in that: described LED has 2 to 8, is connected in parallel between each LED.
3. LED flashlight according to claim 1 is characterized in that: the rated voltage of described battery is 1.5V～3V.
4. LED flashlight according to claim 1 is characterized in that: the forward operating current of described arbitrary LED is 20mA.
5. LED flashlight according to claim 1 is characterized in that: the inductance value of described inductance (L) is 50～300 μ H.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720050328XU CN201047496Y (en) | 2007-04-13 | 2007-04-13 | LED electric torch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720050328XU CN201047496Y (en) | 2007-04-13 | 2007-04-13 | LED electric torch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201047496Y true CN201047496Y (en) | 2008-04-16 |
Family
ID=39300079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720050328XU Expired - Lifetime CN201047496Y (en) | 2007-04-13 | 2007-04-13 | LED electric torch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201047496Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104023443A (en) * | 2014-05-29 | 2014-09-03 | 深圳市迈悍德实业有限公司 | Illumination hinge |
-
2007
- 2007-04-13 CN CNU200720050328XU patent/CN201047496Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104023443A (en) * | 2014-05-29 | 2014-09-03 | 深圳市迈悍德实业有限公司 | Illumination hinge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGZHOU TIGERFIRE LIGHTING CO.,LTD. Free format text: FORMER NAME: GUANGZHOU FLASHLIGHT INDUSTRIAL CORPORATION |
|
| CP03 | Change of name, title or address |
Address after: Room 705, Qin Jian building, 468 West Whampoa Road, Tianhe District, Guangdong, Guangzhou Province, China: 510630 Patentee after: TigerFire (Guangzhou) Lighting Technology Corporation Address before: No. 134, Xihua Road, Guangdong, Guangzhou Province, China: 510170 Patentee before: Guangzhou Flashlight Industry Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080416 |