CN201093226Y - Double fuze illumination device of LED - Google Patents
Double fuze illumination device of LED Download PDFInfo
- Publication number
- CN201093226Y CN201093226Y CNU2007200524816U CN200720052481U CN201093226Y CN 201093226 Y CN201093226 Y CN 201093226Y CN U2007200524816 U CNU2007200524816 U CN U2007200524816U CN 200720052481 U CN200720052481 U CN 200720052481U CN 201093226 Y CN201093226 Y CN 201093226Y
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- Prior art keywords
- circuit
- luminescence unit
- filter circuit
- led
- luminous unit
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- Expired - Fee Related
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- 238000005286 illumination Methods 0.000 title abstract 2
- 238000004020 luminiscence type Methods 0.000 claims description 38
- 230000006837 decompression Effects 0.000 claims description 18
- 230000006641 stabilisation Effects 0.000 claims description 15
- 238000011105 stabilization Methods 0.000 claims description 15
- 230000009977 dual effect Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims 1
- 239000003381 stabilizer Substances 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The utility model discloses a double insurance illuminating apparatus of an LED, which is connected with a DC supply or an AC supply circuit and comprises a voltage release commutate filter circuit. The utility model is characterized in that the double insurance illuminating apparatus also comprises a luminous unit cluster which is formed by the series connection of a plurality of luminous units; the two ends of the luminous unit cluster are respectively connected with the collector of a steady current dynatron and the anode of a power supply; a steady current resistor is arranged between an emitter and the ground; furthermore, a control dynatron which can ensure that the current of the whole luminous unit cluster is constantly in a set range when the voltage changes, so a luminous unit combination with a steady current structure is formed. A luminous diode and a corresponding voltage regulator diode are in parallel connection to be served as a luminous unit; the voltage release commutate filter circuit is connected with the luminous unit combination, or is in parallel connection with a plurality of luminous unit combinations. For the utility model, even through a certain LED or a voltage regulator diode is damaged, either short circuit or incomplete circuit, the normal use of the whole luminous unit cluster cannot be influenced, and the requirement of the LED illumination can be sufficiently and effectively ensured.
Description
Technical field
The utility model relates to lighting device, specifically is a kind of LED lighting device that two-way safeguarding function is arranged.
Background technology
LED is as the lighting source of a new generation, owing to have advantage such as energy-conservation, pollution-free, long service life, uses more and more widely.At present, LED is used for lighting device and has great power LED price height, and the single brightness of low-power LED is low, adopts a plurality of serial connections to realize usually, because the low-power LED consumption is big, service efficiency in parallel is low, the power consumption height, and connect when using, when supply voltage has than cataclysm, or certain LED element short circuit or open circuit etc., all can cause the damage of entire product, influence service life.
The utility model content
The purpose of this utility model is that the LED lighting device that a kind of LED of helping connection reliability, long service life, efficient height, cost are low, have two-way safeguarding function is provided in order to solve above-mentioned deficiency.
The technical solution that the utility model adopts in order to reach above-mentioned effect is as follows:
The dual fail-safe lighting device of this LED, be connected with interchange or DC power supply circuit, it comprises decompression rectifier filter circuit, it is characterized in that, it also comprises the luminescence unit string that is in series and is formed by a plurality of luminescence units, the two ends of luminescence unit string connect the colelctor electrode of current stabilization triode and the positive pole of power supply respectively, between emitter stage and the ground ballast resistance is arranged, and then be equipped with the control triode of current constant in setting range of whole luminescence unit string when guaranteeing variation in voltage, the above-mentioned luminescence unit combination that constitutes the current stabilization structure; Corresponding Zener diode in parallel is as a luminescence unit on the light emitting diode; A decompression rectifier filter circuit connects a luminescence unit combination, and a plurality of luminescence unit combinations perhaps are connected in parallel.
Capacitance-resistance when described decompression rectifier filter circuit is alternating current circuit (RC) decompression rectifier filter circuit, transformer decompression rectifier filter circuit or Switching Power Supply reduction voltage circuit; Resistance limiting filter circuit, filter circuit of pressure-stabilizing or power supply regulator circuit during DC circuit.
The ballast resistance that is provided with between the current stabilization triode of described serial regulating circuit, colelctor electrode sending and receiving light unit strings, the emitter stage of current stabilization triode and the ground constitutes the constant-current source circuit, and luminescence unit string two ends connect the colelctor electrode of current stabilization triode and the positive pole of power supply respectively.
The beneficial effect that the utility model adopts above-mentioned technical solution to reach is:
One, two-way safeguarding function is stable practical; This device has changed existing technological deficiency, with each LED be together in series again after voltage-stabiliser tube is in parallel, even if certain LED lamp open circuit like this, whole luminescence unit string since the existence of voltage-stabiliser tube can continue to be communicated with, thereby guarantee the normal use of whole luminescence unit string; On the basis of automatic steady current voltage stabilizing, even if certain LED short circuit, whole luminescence unit string is because current stabilization circuit exists, and current constant is in the scope of setting, and the luminescence unit string still can normally use.
Two, long service life, the efficient height; Owing to adopt voltage-stabiliser tube and constant-current source circuit, guaranteed the relative stability of light emitting diode operating current, light emitting diode is prolonged service life; Reduced requirement to power supply stability, energy-efficient, reach the purpose that makes the light emitting diode operate as normal; Can be widely used in aspects such as LED bulb, desk lamp, floor lamp, wall lamp, lamp affixed to the ceiling, shot-light, Engineering Lamp, the life-span is long and cost is low, excellent generalization values is arranged.
Description of drawings
Fig. 1 is a luminescence unit structural representation of the present utility model;
Fig. 2 is the utility model embodiment structural representation;
Fig. 3 is the another kind of embodiment structural representation of the utility model.
Description of symbols among the figure: decompression rectifier filter circuit 1, constant-current source circuit 2, luminescence unit string 3, individual luminescence unit (3-1 ... 3-n).
The specific embodiment
By Fig. 1, shown in Figure 2, the dual fail-safe lighting device of LED of the present utility model is connected with power circuit, and it comprises decompression rectifier filter circuit 1 and supporting with it constant-current source circuit 2, luminescence unit string 3; Described luminescence unit string 3 and a supporting constant-current source circuit 2 connect to form a luminescence unit combination 4, with decompression rectifier filter circuit 1 parallel connection; This luminescence unit string 3 for one or more luminescence units that are connected in series (3-1 ... 3-n) string, each luminescence unit (3-1 ... 3-n) constitute by corresponding Zener diode in parallel on the light emitting diode, because each LED and the formation luminescence unit that is together in series again after voltage-stabiliser tube is in parallel, if certain LED opens a way like this, whole luminescence unit string does not influence the normal use of entire product owing to voltage-stabiliser tube continues to be communicated with; RC decompression rectifier filter circuit when decompression rectifier filter circuit 1 is alternating current circuit, transformer decompression rectifier filter circuit or Switching Power Supply reduction voltage circuit; Constant-current source circuit 2 is to be made of the ballast resistance that the emitter stage of the current stabilization triode of serial regulating circuit, colelctor electrode sending and receiving light unit strings, current stabilization triode and ground directly are provided with, and luminescence unit string two ends connect the colelctor electrode of current stabilization triode and the positive pole of power supply respectively; Described luminescence unit string 3 also is connected with the control triode of current constant in setting range of whole luminescence unit string when guaranteeing voltage rising or reduction, when voltage raises, the ballast resistance both end voltage increases, control transistor base current potential improves, conducting drags down the base voltage of current stabilization triode, cause that voltage increases between the collector and emitter of current stabilization triode, the light emitting diode string electric current reduces constant in the scope of setting; When voltage reduces, the ballast resistance both end voltage reduces, and control transistor base voltage descends, and has improved the base voltage of current stabilization triode, cause that voltage reduces between the collector and emitter of current stabilization triode, the light emitting diode string electric current strengthens constant in the scope of setting.
Resistance limiting filter circuit when above-mentioned decompression rectifier filter circuit can also be DC circuit, filter circuit of pressure-stabilizing or supply voltage are adjusted circuit.
As shown in Figure 3, another kind of embodiment of the present utility model, described luminescence unit string 3 and a supporting constant-current source circuit 2 connect to form a luminescence unit combination 4, with decompression rectifier filter circuit 1 parallel connection; The luminescence unit string is the m row, and same constant-current source circuit also is the m row, forms the m group and is connected with decompression rectifier filter circuit; All the other are with above-mentioned embodiment.
Claims (2)
1. the dual fail-safe lighting device of a LED, be connected with interchange or DC power supply circuit, it includes decompression rectifier filter circuit, it is characterized in that, it also comprises the luminescence unit string that is in series and is formed by a plurality of luminescence units, the two ends of luminescence unit string connect the colelctor electrode of current stabilization triode and the positive pole of power supply respectively, between emitter stage and the ground ballast resistance is arranged, and then be equipped with the control triode of current constant in setting range of whole luminescence unit string when guaranteeing variation in voltage, the above-mentioned luminescence unit combination that constitutes the current stabilization structure; Corresponding Zener diode in parallel is as a luminescence unit on the light emitting diode; A decompression rectifier filter circuit connects a luminescence unit combination, and a plurality of luminescence unit combinations perhaps are connected in parallel.
2. the dual fail-safe lighting device of LED according to claim 1 is characterized in that: the resistance-capacitance depressurization current rectifying and wave filtering circuit when described decompression rectifier filter circuit is alternating current circuit, transformer decompression rectifier filter circuit or Switching Power Supply reduction voltage circuit; Resistance limiting filter circuit, filter circuit of pressure-stabilizing or power supply regulator circuit when perhaps being DC circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200524816U CN201093226Y (en) | 2007-06-08 | 2007-06-08 | Double fuze illumination device of LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200524816U CN201093226Y (en) | 2007-06-08 | 2007-06-08 | Double fuze illumination device of LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201093226Y true CN201093226Y (en) | 2008-07-30 |
Family
ID=39901195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200524816U Expired - Fee Related CN201093226Y (en) | 2007-06-08 | 2007-06-08 | Double fuze illumination device of LED |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201093226Y (en) |
-
2007
- 2007-06-08 CN CNU2007200524816U patent/CN201093226Y/en not_active Expired - Fee Related
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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: 20080730 |