CN107105550A - The flexible LED lamp band of specular removal, lower calorific value - Google Patents
The flexible LED lamp band of specular removal, lower calorific value Download PDFInfo
- Publication number
- CN107105550A CN107105550A CN201710478947.7A CN201710478947A CN107105550A CN 107105550 A CN107105550 A CN 107105550A CN 201710478947 A CN201710478947 A CN 201710478947A CN 107105550 A CN107105550 A CN 107105550A
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- semiconductor
- oxide
- triode
- metal
- led
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention provides a kind of specular removal, the flexible LED lamp band of lower calorific value, including：Metal-oxide-semiconductor, triode, first resistor and second resistance, positive source is connected by the first resistor with the colelctor electrode of the triode, the emitter stage of the triode is connected with power cathode, the LED that the positive source passes sequentially through multiple series connection is connected with the drain electrode of the metal-oxide-semiconductor, the source electrode of the metal-oxide-semiconductor is connected by the second resistance with the power cathode, the base stage of the triode is connected with the source electrode of the metal-oxide-semiconductor, and the grid of the metal-oxide-semiconductor is connected with the colelctor electrode of the triode.Constant-current drive circuit operating voltage in the present invention is substantially reduced, improve multiple LED of series connection operating voltage, so as to advantageously concatenate greater number of LED in each LED unit, while also causing the caloric value of product to be significantly reduced, the extension of product service life is more beneficial for.
Description
Technical field
The present invention relates to LED technology field, more particularly to a kind of specular removal, the flexible LED lamp band of lower calorific value.
Background technology
There are the use characteristic for carrying out length cutting according to application places in application, institute because flexible LED lamp band needs to have
It can not be constant with its supply current, i.e., can only adopt constant voltage source.So must be configured on the internal circuit of flexible LED lamp band
The LED drive circuit such as current-limiting type or constant-current type.The power consumption of current-limiting type or constant-current type circuit then can additionally increase product power,
Luminous efficiency of the flexible LED lamp with product is had a strong impact on.
Therefore, in the case of certain product power consumption, the useless power of LED drive circuit consumption, phase are reduced as far as possible
The available power of lifting LED consumption is lifting effective ways of the flexible LED lamp with product luminous efficiency over the ground.
However, the operating voltage of constant-current drive circuit of the prior art is higher so that the caloric value of product also substantially compared with
Height, is unfavorable for product service life.
The content of the invention
The invention provides a kind of specular removal, the flexible LED lamp band of lower calorific value, to solve the driving electricity of constant current in the prior art
The operating voltage on road is higher so that the caloric value of product is also significantly higher, the problem of being unfavorable for product service life.
To solve the above problems, as one aspect of the present invention, there is provided the LED of a kind of specular removal, lower calorific value is soft
Light bar, including：Metal-oxide-semiconductor, triode, first resistor and second resistance, positive source pass through the first resistor and three pole
The colelctor electrode connection of pipe, the emitter stage of the triode is connected with power cathode, and the positive source passes sequentially through multiple series connection
LED be connected with the drain electrode of the metal-oxide-semiconductor, the source electrode of the metal-oxide-semiconductor is connected by the second resistance with the power cathode,
The base stage of the triode is connected with the source electrode of the metal-oxide-semiconductor, and the colelctor electrode of the grid of the metal-oxide-semiconductor and the triode connects
Connect.
Preferably, the forward voltage of the LED is less than 2.9V.
Constant-current drive circuit operating voltage in the present invention is substantially reduced, and puies forward multiple LED7 of series connection operating voltage
Height, so that advantageously greater number of LED7 is concatenated in each LED unit, while also causing the caloric value of product also substantially to drop
It is low, it is more beneficial for the extension of product service life.
Brief description of the drawings
Fig. 1 schematically shows the circuit theory diagrams of the present invention.
Reference in figure：1st, metal-oxide-semiconductor；2nd, triode；3rd, first resistor；4th, second resistance；5th, positive source；6th, power supply
Negative pole；7、LED.
Embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
The invention provides a kind of specular removal, the flexible LED lamp band of lower calorific value, including：Metal-oxide-semiconductor 1, the electricity of triode 2, first
Resistance 3 and second resistance 4, positive source 5 are connected by the first resistor 3 with the colelctor electrode of the triode 2, the triode
2 emitter stage is connected with power cathode 6, and the positive source 5 passes sequentially through the LED7 of multiple series connection and the leakage of the metal-oxide-semiconductor 1
Pole is connected, and the source electrode of the metal-oxide-semiconductor 1 is connected by the second resistance 4 with the power cathode 6, the base stage of the triode 2
It is connected with the source electrode of the metal-oxide-semiconductor 1, the grid of the metal-oxide-semiconductor 1 is connected with the colelctor electrode of the triode 2.
Below, the operation principle of the present invention is explained in detail with reference to Fig. 1.
In Fig. 1, first resistor 3 is power supply bias resistance, and positive source 5 provides work by first resistor 3 to metal-oxide-semiconductor 1
Make voltage, while being that the colelctor electrode of triode 2 is powered bias resistance, limit the collector current of triode 2.Second resistance 4 is electric current
There is provided to triode 2 for sample resistance.Triode 2 amplifies the sampled signal of second resistance 4, big according to the signal of second resistance 4
It is small, collector current is formed after amplification.Metal-oxide-semiconductor 1 is used as negative-feedback source, when the electric current for flowing through LED7 rises, second resistance 4
Voltage raise, the collector current of triode 2 increase, drag down the grid potential of metal-oxide-semiconductor 1, at the same the source potential of metal-oxide-semiconductor 1 due to
The pressure drop of second resistance 4 is raised and raised, then the source bias voltage of metal-oxide-semiconductor 1 reduces, and source current reduces, to maintain LED7
Electric current it is constant.
When LED7 electric current rises, the voltage rise of second resistance 4, the collector current of triode 2 increase drags down MOS
The grid potential of pipe 1, while the source potential of metal-oxide-semiconductor 1 is raised due to the pressure drop rise of second resistance 4, then the source electrode of metal-oxide-semiconductor 1 is inclined
Voltage reduction is put, source current reduces, to maintain LED7 electric current constant.
Therefore, in the case where LED7 driving current is certain, because the constant current that triode 2 and metal-oxide-semiconductor 1 are constituted drives electricity
The operating voltage on road is substantially reduced, and improves multiple LED7 of series connection operating voltage, so that advantageously in each LED unit
Greater number of LED7 is concatenated, while also causing the caloric value of product to be significantly reduced, prolonging for product service life is more beneficial for
It is long.
Further, since the reduction of product heat, reduces the cooling requirements of product use environment, also have in service life
Extension.
Preferably, the forward voltage of the LED7 is less than 2.9V.By LED LED strip connection number using positive operating voltage
The relatively low LED of value, can increase the LED numbers of concatenation.Therefore, in the case where the electric current of positive source 5 and LED7 is constant, work(
Rate does not increase, and also electric current is not reduced for driving, but LED7 number can be more than the LED circuit of routine, circuit output
Luminous flux increase, then luminous efficiency increase.
In addition, operating voltage (the electricity i.e. between the drain electrode of metal-oxide-semiconductor 1 and power cathode 6 of the constant-current drive circuit when design
Pressure) value is relatively low, when LED7 electric current is constant, because the useless power that constant-current drive circuit is consumed diminishes, then the power consumed
Reduce, the caloric value of product is reduced.
In one embodiment, in the case where supply voltage is DC24V, the LED numbers of each LED unit circuit concatenation
8 can be increased to by original 6.Therefore, under identical power, LED unit circuit is emitting led to increase to 8 by 6,
The then overall luminous flux sent lifting 30~35%, the luminous efficiency equivalent to circuit lifts about 30~35%.In addition, adding again
On due to LED luminous efficiency part about 20%, the luminous efficiency of whole product than traditional flexible LED lamp band lifting about 50~
60%.On the other hand, because the power consumed on drive circuit is substantially reduced, so the caloric value of product is also significantly reduced, it is right
The scattered of the use environment of product holds requirement reduction, also there is obvious benefit to service life.Due to product luminous efficiency it is big
Amplitude lifts the reduction with product heat, under certain brightness requirement, is substantially reduced using power, it will save substantial amounts of electricity consumption
Amount.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (2)
1. the flexible LED lamp band of a kind of specular removal, lower calorific value, it is characterised in that including：Metal-oxide-semiconductor (1), triode (2), first
Resistance (3) and second resistance (4), positive source (5) are connected by the colelctor electrode of the first resistor (3) and the triode (2)
Connect, the emitter stage of the triode (2) is connected with power cathode (6), the positive source (5) passes sequentially through multiple series connection
LED (7) is connected with the drain electrode of the metal-oxide-semiconductor (1), and the source electrode of the metal-oxide-semiconductor (1) passes through the second resistance (4) and the electricity
Source negative pole (6) is connected, and the base stage of the triode (2) is connected with the source electrode of the metal-oxide-semiconductor (1), the grid of the metal-oxide-semiconductor (1)
It is connected with the colelctor electrode of the triode (2).
2. the flexible LED lamp band of specular removal according to claim 1, lower calorific value, it is characterised in that the LED (7) is just
It is less than 2.9V to voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710478947.7A CN107105550A (en) | 2017-06-22 | 2017-06-22 | The flexible LED lamp band of specular removal, lower calorific value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710478947.7A CN107105550A (en) | 2017-06-22 | 2017-06-22 | The flexible LED lamp band of specular removal, lower calorific value |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107105550A true CN107105550A (en) | 2017-08-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710478947.7A Pending CN107105550A (en) | 2017-06-22 | 2017-06-22 | The flexible LED lamp band of specular removal, lower calorific value |
Country Status (1)
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| CN (1) | CN107105550A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2571834A (en) * | 2018-02-06 | 2019-09-11 | Guangdong Oml Tech Co Ltd | Low-voltage light strip |
| CN110307477A (en) * | 2019-08-05 | 2019-10-08 | 厦门集长新材料科技有限公司 | A kind of constant-voltage LED light bar cut |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102281679A (en) * | 2011-06-27 | 2011-12-14 | 广东工业大学 | LED linearity constant current control circuit based on discrete component |
| CN102595714A (en) * | 2012-01-19 | 2012-07-18 | 江苏好的节能光电科技有限公司 | Shunt constant-current control circuit for LED chip matrix light source |
-
2017
- 2017-06-22 CN CN201710478947.7A patent/CN107105550A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102281679A (en) * | 2011-06-27 | 2011-12-14 | 广东工业大学 | LED linearity constant current control circuit based on discrete component |
| CN102595714A (en) * | 2012-01-19 | 2012-07-18 | 江苏好的节能光电科技有限公司 | Shunt constant-current control circuit for LED chip matrix light source |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2571834A (en) * | 2018-02-06 | 2019-09-11 | Guangdong Oml Tech Co Ltd | Low-voltage light strip |
| GB2571834B (en) * | 2018-02-06 | 2020-12-02 | Guangdong Oml Tech Co Ltd | Low-voltage light strip |
| CN110307477A (en) * | 2019-08-05 | 2019-10-08 | 厦门集长新材料科技有限公司 | A kind of constant-voltage LED light bar cut |
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Application publication date: 20170829 |