CN2744923Y - LED flashlight - Google Patents
LED flashlight Download PDFInfo
- Publication number
- CN2744923Y CN2744923Y CN 200420090742 CN200420090742U CN2744923Y CN 2744923 Y CN2744923 Y CN 2744923Y CN 200420090742 CN200420090742 CN 200420090742 CN 200420090742 U CN200420090742 U CN 200420090742U CN 2744923 Y CN2744923 Y CN 2744923Y
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- Prior art keywords
- handle body
- led
- head
- light
- battery
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Abstract
The utility model discloses an LED flash light that comprises a head part and a handle body. The head part is provided with a light-emitting device, the front end of the head part is provided with a transparent glass piece, the periphery of the light-emitting device is provided with a reflecting mirror, the handle body is provided with a plurality of cells that are connected in series, and the tail part of the handle body is provided with an end cover. The positive electrode of the cells is connected with one end of an illuminating device, and the negative electrode of the cells is connected with the other end of the illuminating device by a switch. The LED flash light is characterized in that the light-emitting device comprises a circuit board that is fixedly provided with a plurality of LED luminotrons, the negative electrode of each LED luminotron is connected with a current-limiting resistor in series, the resistance values of all the current-limiting resistors are equal, and the current values that passes through the LED luminotrons are 20-30 mA. The LED flash light has the advantages that the LED flash light keeps the current values of the LED luminotrons is in safe rated range of 20-30 mA, can effectively use a plurality of LED luminotrons connected in parallel, therefore, largely improves the illuminating brightness of the products, omits the light gathering convex glass, and reduces the manufacturing cost of the products.
Description
Technical field
The utility model relates to a kind of flashlight, especially relates to a kind of LED flashlight.
Background technology
Flashlight is the essential product in people's daily life, and common flashlight comprises a cylindrical shell, is provided with bulb at the head of cylindrical shell, and switch is arranged on the cylindrical shell, is used for connecting the circuit between battery and the bulb.Because environment for use and the particularity of service time, tend to cause the damage of filament in the fragmentation of bulb and the bulb, in particular for the life-span of the miniature bulb of flashlight shorter, be difficult to satisfy the needs of long-time illumination.Development along with the high-brightness LED product technology, people repay examination the LED luminous tube are substituted the miniature bulb that uses in traditional flashlight, as disclosing a kind of LED flashlight in the disclosed No. 01815816.1 Chinese invention patent ublic specification of application on November 26th, 2003, it utilizes high power, directed LED to substitute miniature bulb, has long service life, non-damageable characteristics.The part but this LED flashlight also comes with some shortcomings, the structural requirement that at first is it is than higher, because the brightness of single led luminous tube is not high enough, therefore the limited light beam that optically focused convex lens utilize LED must be set in the place ahead of LED, because lens belong to the higher optical element of processing request, thereby have increased the cost of product; In addition, with respect to original flashlight, its brightness of illumination also descends to some extent.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of LED flashlight at above-mentioned prior art present situation, and it not only has long service life, non-damageable characteristics, and has brightness of illumination height, advantage that cost of goods manufactured is low.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of LED flashlight, comprise head and handle body, described head is provided with light-emitting device, the front end of described head is provided with transparent glasses lens, be provided with reflective mirror around the described light-emitting device, series connection is provided with the battery of three joint 1.5V in the described handle body, the afterbody of described handle body is provided with end cap, the positive pole of described battery is connected with an end of described lighting device, the negative pole of described battery links to each other with the other end of described lighting device by switch, described light-emitting device comprises a circuit board, be set with a plurality of LED luminous tubes on the described circuit board, the negative pole of each LED luminous tube all is serially connected with the identical current-limiting resistance of resistance, the positive pole of described battery links to each other with an end of described current-limiting resistance, the negative pole of described battery links to each other with the positive pole of described LED luminous tube by described switch, and the current value that flows through in the described LED luminous tube is 20～30mA.
Can connect in the described handle body is provided with three joint C-size batteries, and described circuit board is provided with 14 LED luminous tubes, and the resistance of described current-limiting resistance is 39 Ω, also can be provided with the LED luminous tube of other various quantity on the described circuit board as required.
Described handle body is the metal handle body, described end cap is a metal end, the negative pole of described battery contacts with described handle body by described end cap, described switch is to constitute like this: described head is connected with described handle body threaded engagement, the back side of described circuit board is provided with the becket that links to each other with circuit, described becket is relative with the leading section of described handle body, and the shape of described becket is consistent with the shape of the front end face of described handle body.
Be provided with spring between the negative pole of described battery and the described end cap.
Be provided with first sealing ring between described transparent glasses lens and the described head, be provided with second sealing ring between described head and the described handle body, be provided with the 3rd sealing ring between described handle body and the described end cap.
Compared with prior art, advantage of the present utility model is the current-limiting resistance in a respective resistance values of negative pole serial connection of each LED luminous tube, can be enough to make under the luminous situation of LED luminous tube at cell voltage, electric current in the maintenance LED luminous tube is in the safe rated range of 20～30mA, can use the LED luminous tube of a plurality of parallel connections effectively, thereby improved the brightness of illumination of product greatly, and omitted the optically focused convex lens, reduced the manufacturing cost of product; And utilize contacting and disconnecting and constitute switch of becket on handle body and the circuit board, and the element of product is reduced, the structure of product obtains simplifying; Being provided with of spring on the one hand makes the positive pole of battery tightr with contacting of circuit board, also makes contacting and disconnecting sensitivity more of becket on handle body and the circuit board on the other hand; And first sealing ring is set between transparent glasses lens and head, second sealing ring is set between head and handle body and the 3rd sealing ring is set between handle body and end cap and then can make flashlight have the excellent waterproof function.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a circuit diagram of the present utility model.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment one: a kind of LED flashlight, comprise head 1 and handle body 2, the front end of head 1 is provided with transparent glasses lens 11, be provided with light-emitting device 3 in the head 1, be provided with reflective mirror 4 around the light-emitting device 3, light-emitting device 3 comprises a circuit board 31, be set with 14 LED luminous tubes 32 that are connected in parallel on the circuit board 31, be provided with three joint C-size batteries 5 of serial connection in the handle body 2, the afterbody of handle body 2 is provided with end cap 6, the negative pole of each LED luminous tube 32 all is serially connected with the identical current-limiting resistance R of resistance, the resistance of resistance R is 39 Ω, the positive pole of battery 5 links to each other with the end of current-limiting resistance R, handle body 2 is the metal handle body, end cap 6 is a metal end, the negative pole of battery 5 contacts with handle body 2 by end cap 6, head 1 is connected with handle body 2 threaded engagement, the back side of circuit board 31 is provided with the becket (figure does not show) that links to each other with the positive pole of LED luminous tube 32, becket is relative with the leading section of handle body 2, the shape of becket is consistent with the shape of the front end face of handle body 2, make head 1 and the 2 relative rotations of handle body, when the front end face of handle body 2 contacts with becket, circuit turn-on, when the front end face of handle body 2 and becket broke away from, circuit disconnected, and its effect is equivalent to a switch, the current value that flows through in the LED luminous tube 32 is 25mA at this moment, is provided with spring 7 between the negative pole of battery 5 and the end cap 6.
Embodiment two: a kind of LED flashlight, comprise head 1 and handle body 2, the front end of head 1 is provided with transparent glasses lens 11, be provided with light-emitting device 3 in the head 1, be provided with reflective mirror 4 around the light-emitting device 3, light-emitting device 3 comprises a circuit board 31, be set with 6 LED luminous tubes 32 that are connected in parallel on the circuit board 31, be provided with three joint No.5 cells 5 of serial connection in the handle body 2, the afterbody of handle body 2 is provided with end cap 6, the negative pole of each LED luminous tube 32 all is serially connected with the identical current-limiting resistance R of resistance, the resistance of resistance R is 51 Ω, the positive pole of battery 5 links to each other with the end of current-limiting resistance R, handle body 2 is the metal handle body, end cap 6 is a metal end, the negative pole of battery 5 contacts with handle body 2 by end cap 6, head 1 is connected with handle body 2 threaded engagement, the back side of circuit board 31 is provided with the becket (figure does not show) that links to each other with the positive pole of LED luminous tube 32, becket is relative with the leading section of handle body 2, the shape of becket is consistent with the shape of the front end face of handle body 2, make head 1 and the 2 relative rotations of handle body, when the front end face of handle body 2 contacts with becket, circuit turn-on, when the front end face of handle body 2 and becket broke away from, circuit disconnected, and its effect is equivalent to a switch, the current value that flows through in the LED luminous tube 32 is 20mA at this moment, is provided with spring 7 between the negative pole of battery 5 and the end cap 6.
Embodiment three: a kind of LED flashlight, comprise head 1 and handle body 2, the front end of head 1 is provided with transparent glasses lens 11, be provided with light-emitting device 3 in the head 1, be provided with reflective mirror 4 around the light-emitting device 3, light-emitting device 3 comprises a circuit board 31, be set with 18 LED luminous tubes 32 that are connected in parallel on the circuit board 31, be provided with battery 5 of three joints of serial connection in the handle body 2, the afterbody of handle body 2 is provided with end cap 6, the negative pole of each LED luminous tube 32 all is serially connected with the identical current-limiting resistance R of resistance, the resistance of resistance R is 33 Ω, the positive pole of battery 5 links to each other with the end of current-limiting resistance R, handle body 2 is the metal handle body, end cap 6 is a metal end, the negative pole of battery 5 contacts with handle body 2 by end cap 6, head 1 is connected with handle body 2 threaded engagement, the back side of circuit board 31 is provided with the becket (figure does not show) that links to each other with the positive pole of LED luminous tube 32, becket is relative with the leading section of handle body 2, the shape of becket is consistent with the shape of the front end face of handle body 2, make head 1 and the 2 relative rotations of handle body, when the front end face of handle body 2 contacts with becket, circuit turn-on, when the front end face of handle body 2 and becket broke away from, circuit disconnected, and its effect is equivalent to a switch, the current value that flows through in the LED luminous tube 32 is 30mA at this moment, is provided with spring 7 between the negative pole of battery 5 and the end cap 6.
Embodiment four: a kind of LED flashlight, comprise head 1 and handle body 2, the front end of head 1 is provided with transparent glasses lens 11, be provided with light-emitting device 3 in the head 1, be provided with reflective mirror 4 around the light-emitting device 3, light-emitting device 3 comprises a circuit board 31, be set with 16 LED luminous tubes 32 that are connected in parallel on the circuit board 31, be provided with three joint C-size batteries 5 of serial connection in the handle body 2, the afterbody of handle body 2 is provided with end cap 6, the negative pole of each LED luminous tube 32 all is serially connected with the identical current-limiting resistance R of resistance, the resistance of resistance R is 39 Ω, the positive pole of battery 5 links to each other with the end of current-limiting resistance R, handle body 2 is the metal handle body, end cap 6 is a metal end, the negative pole of battery 5 contacts with handle body 2 by end cap 6, head 1 is connected with handle body 2 threaded engagement, the back side of circuit board 31 is provided with the becket (figure does not show) that links to each other with the positive pole of LED luminous tube 32, becket is relative with the leading section of handle body 2, the shape of becket is consistent with the shape of the front end face of handle body 2, make head 1 and the 2 relative rotations of handle body, when the front end face of handle body 2 contacts with becket, circuit turn-on, when the front end face of handle body 2 and becket break away from, circuit disconnects, and its effect is equivalent to a switch, and the current value that flows through in the LED luminous tube 32 is 25mA at this moment, be provided with spring 7 between the negative pole of battery 5 and the end cap 6, be provided with first sealing ring 8 between transparent glasses lens 11 and the head 1, be provided with second sealing ring 9 between head 1 and the handle body 2, be provided with the 3rd sealing ring 10 between handle body 2 and the end cap 6.
Claims (5)
1, a kind of LED flashlight, comprise head and handle body, described head is provided with light-emitting device, the front end of described head is provided with transparent glasses lens, be provided with reflective mirror around the described light-emitting device, series connection is provided with the battery of 1.5 volts at three joints in the described handle body, the afterbody of described handle body is provided with end cap, the positive pole of described battery is connected with an end of described lighting device, the negative pole of described battery links to each other with the other end of described lighting device by switch, it is characterized in that described light-emitting device comprises a circuit board, be set with a plurality of LED luminous tubes on the described circuit board, the negative pole of each LED luminous tube all is serially connected with the identical current-limiting resistance of resistance, the positive pole of described battery links to each other with an end of described current-limiting resistance, the negative pole of described battery links to each other with the positive pole of described LED luminous tube by described switch, and the current value that flows through in the described LED luminous tube is 20～30mA.
2, a kind of LED flashlight as claimed in claim 1 is characterized in that series connection is provided with three joint C-size batteries in the described handle body, and described circuit board is provided with 14 LED luminous tubes, and the resistance of described current-limiting resistance is 39 Ω.
3, a kind of LED flashlight as claimed in claim 1, it is characterized in that described handle body is the metal handle body, described end cap is a metal end, the negative pole of described battery contacts with described handle body by described end cap, described switch is to constitute like this: described head is connected with described handle body threaded engagement, the back side of described circuit board is provided with the becket that links to each other with circuit, described becket is relative with the leading section of described handle body, and the shape of described becket is consistent with the shape of the front end face of described handle body.
4, a kind of LED flashlight as claimed in claim 3 is characterized in that being provided with spring between the negative pole of described battery and the described end cap.
5, as the described a kind of LED flashlight of each claim in the claim 1～4, it is characterized in that being provided with first sealing ring between described transparent glasses lens and the described head, be provided with second sealing ring between described head and the described handle body, be provided with the 3rd sealing ring between described handle body and the described end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420090742 CN2744923Y (en) | 2004-09-29 | 2004-09-29 | LED flashlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420090742 CN2744923Y (en) | 2004-09-29 | 2004-09-29 | LED flashlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2744923Y true CN2744923Y (en) | 2005-12-07 |
Family
ID=35579704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420090742 Expired - Fee Related CN2744923Y (en) | 2004-09-29 | 2004-09-29 | LED flashlight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2744923Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927452A (en) * | 2012-10-31 | 2013-02-13 | 常州市凯宇工具有限公司 | Light-emitting diode (LED) flashlight |
| CN102063868B (en) * | 2009-11-12 | 2013-08-07 | 鸿富锦精密工业（深圳）有限公司 | Electronic device with backlight control and control method thereof |
-
2004
- 2004-09-29 CN CN 200420090742 patent/CN2744923Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063868B (en) * | 2009-11-12 | 2013-08-07 | 鸿富锦精密工业（深圳）有限公司 | Electronic device with backlight control and control method thereof |
| CN102927452A (en) * | 2012-10-31 | 2013-02-13 | 常州市凯宇工具有限公司 | Light-emitting diode (LED) flashlight |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051207 Termination date: 20091029 |