CN201034274Y - Two-grade voltage regulating LED desk lamp - Google Patents
Two-grade voltage regulating LED desk lamp Download PDFInfo
- Publication number
- CN201034274Y CN201034274Y CNU2007200514208U CN200720051420U CN201034274Y CN 201034274 Y CN201034274 Y CN 201034274Y CN U2007200514208 U CNU2007200514208 U CN U2007200514208U CN 200720051420 U CN200720051420 U CN 200720051420U CN 201034274 Y CN201034274 Y CN 201034274Y
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- led
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- desk lamp
- circuit board
- transformer
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- 230000001105 regulatory effect Effects 0.000 title abstract 6
- 239000011049 pearl Substances 0.000 claims description 32
- 239000003990 capacitor Substances 0.000 claims description 7
- 230000001939 inductive effect Effects 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000011324 bead Substances 0.000 abstract 2
- 238000005286 illumination Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Circuit Arrangement For Electric Light Sources In General (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The utility model discloses a two-stage voltage regulating LED desk lamp, which comprises a desk lamp base, a lamp cover, and a bracket whose length is adjustable and can be folded. The bracket is arranged between the base and the lamp cover to support and adjust the position of the lamp cover. An LED lamp bead group is arranged on the lamp cover. A primary voltage regulating transformer and a secondary voltage regulating electronic circuit board are fixed on the base. The input terminal of the transformer is in electric connection with the input power supply of the desk lamp, and the output terminal is in electric connection with the input terminal of the electronic circuit board. The output terminal of the electronic circuit board is in electric connection with the LED lamp bead group. By regulating the voltage via the transformer and the electronic circuit board, in other words two-stage voltage regulating, the LED desk lamp with the structure can effectively reduce the wave amplitude effect of the voltage, and improve the using life of the LED, product safety degree and the lighting stability.
Description
Technical field
The utility model relates to a kind of LED desk lamp, especially a kind of LED desk lamp with secondary pressure regulation effect.
Background technology
Traditional desk lamp generally adopts incandescent lamp bulb as light emitting source, and still, incandescent lamp bulb has the defective that power consumption is big, the life-span is short; Along with the new product development of electronic applications, utilize the desk lamp of LED light emitting diode as light emitting source, appeared at market; The LED light emitting diode has that power consumption is little, luminous efficiency is high, and advantage such as long service life, is applied in the desk lamp field gradually.But the LED light emitting diode belongs to the low-voltage lighting light source, therefore, in the existing LED desk lamp, all electronic transformer can be set, and directly civil power 220V is reduced to 3V, and the LED light emitting diode use for desk lamp promptly is provided with the step-down of one-level pressure regulator in the desk lamp.The LED desk lamp of said structure has the following disadvantages: the step-down of one-level pressure regulator only is set in the desk lamp, directly civil power 220V being reduced to 3V uses for LED, be subjected to voltage wave amplitude de-stabilising effect, cause the low and illumination instability of illumination life-span degree of safety short and product of LED.
The utility model content
The purpose of this utility model is to address the aforementioned drawbacks, and the LED desk lamp of the secondary pressure regulation of a kind of LED long service life, power saving, degree of safety height and illumination good stability is provided.
The purpose of this utility model is achieved in that
The LED desk lamp of secondary pressure regulation, comprise Desk lamp feet, lampshade, and the support of adjustable length and bending, support is arranged between base and the lampshade, in order to support and to regulate the lampshade position, be equiped with LED lamp pearl group on the lampshade, be fixed with the transformer of elementary pressure regulation and the electronic circuit board of secondary pressure regulation on the described base, the input of transformer is electrically connected with the input power supply of desk lamp, its output is electrically connected with the input of electronic circuit board, and the output of described electronic circuit board is electrically connected with LED lamp pearl group; The LED desk lamp of this structure, by transformer and electronic circuit board pressure regulation respectively, i.e. secondary pressure regulation can reduce the wave amplitude influence of voltage effectively, improves service life, the degree of safety of product and the stability of illumination of LED.
The utility model can also adopt following technical measures to solve:
Described electronic circuit board is as preferred version, it comprises relay J, bridge rectifier D 1-D4, capacitor C and resistance R, the input of relay J is connected with the output of transformer, the output of relay J connects the input of bridge rectifier D 1-D4, on the output of bridge rectifier D 1-D4 and be connected to capacitor C, also be serially connected with LED lamp pearl group and resistance R on the output of described bridge rectifier D 1-D4.
Described LED lamp pearl group is made of the LED lamp pearl branch road of two groups at least, every group LED lamp pearl props up at least two LED lamp pearls compositions that route is serially connected mutually, after input on every group the LED lamp pearl branch road and output are connected with each other, be serially connected on the output of bridge rectifier D 1-D4, resistance R is serially connected on the output of LED lamp pearl group again; The above-mentioned setting of LED lamp pearl group can increase LED lamp pearl branch road according to instructions for use, or increase LED lamp pearl in each branch road.
Described transformer is an inductive transformer, can carry out the secondary pressure regulation by electronic circuit board again with civil power 220V pressure regulation to 12V, and promptly pressure regulation is to 3V.
The beneficial effects of the utility model are:
LED desk lamp of the present utility model, by transformer and electronic circuit board pressure regulation respectively, i.e. secondary pressure regulation can reduce the wave amplitude influence of voltage effectively, improves service life, power saving, the degree of safety of product and the stability of illumination of LED; The transformer adopting inductive transformer can be realized the purpose of the novel secondary pressure regulation of this hair.
Description of drawings
Fig. 1 is a LED Table lamp structure schematic diagram of the present utility model
Fig. 2 is the circuit diagram of LED desk lamp of the present utility model
The specific embodiment
As shown in Figure 1, the LED desk lamp of secondary pressure regulation, comprise Desk lamp feet 1, lampshade 2, and the support 3 of adjustable length and bending, support 3 is arranged between base 1 and the lampshade 2, in order to support and to adjust lampshade 2 positions, be equiped with LED lamp pearl group 4 on the lampshade 2, be fixed with the inductive transformer T of elementary pressure regulation and the electronic circuit board 5 of secondary pressure regulation on the described base 1, the input of inductive transformer T is electrically connected with the input power supply of desk lamp, its output is electrically connected with the input of electronic circuit board 5, and the output of described electronic circuit board 5 is electrically connected with LED lamp pearl group 4.
As shown in Figure 2, described electronic circuit board 5 comprises relay J, bridge rectifier D 1-D4, capacitor C and resistance R, the input of relay J is connected with the output of transformer, the output of relay J connects the input of bridge rectifier D 1-D4, on the output of bridge rectifier D 1-D4 and be connected to capacitor C, also be serially connected with LED lamp pearl group 4 and resistance R on the output of described bridge rectifier D 1-D4.
Described LED lamp pearl group 4 is made of six groups LED lamp pearl branch road, every group LED lamp pearl props up three LED lamp pearls compositions that route is serially connected mutually, after input on every group the LED lamp pearl branch road and output are connected with each other, be serially connected on the output of bridge rectifier D 1-D4, resistance R is serially connected on the output of LED lamp pearl group 4 again.In Fig. 2, LED lamp pearl group 4 is made up of LED light emitting diode L1-L18.
Operation principle: civil power 220V is depressurized to through inductive transformer T and exchanges 12V, it is the one-level pressure regulation, pass through the step-down rectifier of relay J, bridge rectifier D 1-D4, filter capacitor C and resistance R on the electronic circuit board 5 again, for LED lamp pearl group 4 provides stable direct current 3V, the degree of safety and the illumination of service life, power saving, product that improves LED effectively is stable.
Claims (4)
1. the LED desk lamp of secondary pressure regulation, comprise Desk lamp feet (1), lampshade (2), and the support of adjustable length and bending (3), support (3) is arranged between base (1) and the lampshade (2), be equiped with LED lamp pearl group (4) on the lampshade (2), it is characterized in that, be fixed with the transformer T of elementary pressure regulation and the electronic circuit board (5) of secondary pressure regulation on the described base (1), the input of transformer T is electrically connected with the input power supply of desk lamp, its output is electrically connected with the input of electronic circuit board (5), and the output of described electronic circuit board (5) is electrically connected with LED lamp pearl group (4).
2. the LED desk lamp of secondary pressure regulation according to claim 1, it is characterized in that, described electronic circuit board (5) comprises relay J, bridge rectifier D 1-D4, capacitor C and resistance R, the input of relay J is connected with the output of transformer, the output of relay J connects the input of bridge rectifier D 1-D4, on the output of bridge rectifier D 1-D4 and be connected to capacitor C, also be serially connected with LED lamp pearl group (4) and resistance R on the output of described bridge rectifier D 1-D4.
3. the LED desk lamp of secondary pressure regulation according to claim 1, it is characterized in that, described LED lamp pearl group (4) is made of the LED lamp pearl branch road of two groups at least, every group LED lamp pearl props up at least two LED lamp pearls compositions that route is serially connected mutually, after input on every group the LED lamp pearl branch road and output are connected with each other, be serially connected on the output of bridge rectifier D 1-D4, resistance R is serially connected on the output of LED lamp pearl group (4) again.
4. the LED desk lamp of secondary pressure regulation according to claim 1 is characterized in that, described transformer T is an inductive transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200514208U CN201034274Y (en) | 2007-05-15 | 2007-05-15 | Two-grade voltage regulating LED desk lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200514208U CN201034274Y (en) | 2007-05-15 | 2007-05-15 | Two-grade voltage regulating LED desk lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201034274Y true CN201034274Y (en) | 2008-03-12 |
Family
ID=39195165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200514208U Expired - Lifetime CN201034274Y (en) | 2007-05-15 | 2007-05-15 | Two-grade voltage regulating LED desk lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201034274Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110261555A1 (en) * | 2010-04-22 | 2011-10-27 | Franklin Electronic Publishers, Incorporated | Led reading light |
| CN102946661A (en) * | 2012-11-14 | 2013-02-27 | 广西玖典电子新材料有限公司 | High-voltage safe brightening lamp |
| CN103189682A (en) * | 2010-04-16 | 2013-07-03 | 优利特有限公司 | Luminaire with a length-variable supporting strut for a light-emitting means |
-
2007
- 2007-05-15 CN CNU2007200514208U patent/CN201034274Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103189682A (en) * | 2010-04-16 | 2013-07-03 | 优利特有限公司 | Luminaire with a length-variable supporting strut for a light-emitting means |
| CN103189682B (en) * | 2010-04-16 | 2016-05-04 | 优利特有限公司 | The lighting apparatus for the length-adjustable support column of lighting device is equipped with |
| US20110261555A1 (en) * | 2010-04-22 | 2011-10-27 | Franklin Electronic Publishers, Incorporated | Led reading light |
| CN102946661A (en) * | 2012-11-14 | 2013-02-27 | 广西玖典电子新材料有限公司 | High-voltage safe brightening lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161230 Address after: 528322 new industrial zone, Leliu Town, Shunde District, Guangdong, Xihua, China, Foshan Patentee after: Shunde Foshan OUYASHI Lighting Electrical Appliance Co. Ltd. Address before: 528300 Guangdong province Foshan city Shunde District Daliang street two Street Road No. 6 Patentee before: Ou Zhanxiang |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080312 |
|
| CX01 | Expiry of patent term |