TWI670995B - Light emitting diode driving apparatus with switch control circuit - Google Patents

Abstract

Light-emitting diode driving device with switch control circuit, comprising a control unit, a switch control circuit, a signal switch unit and a control power supply unit; the control power supply unit, the signal switch unit and a plurality of light-emitting diode units The system is connected in series, and the control power unit is used to supply power to the control unit. The control unit controls the switch control circuit to turn on the signal switch unit, so that the DC power source passes through the signal switch unit to form a high-level portion of one of the illumination signals of the LED units; the control unit controls The switch control circuit does not turn on the signal switching unit to form a low level portion of the illuminating signal.

Description

Light-emitting diode driving device with switch control circuit

The invention relates to a light-emitting diode driving device, in particular to a light-emitting diode driving device with a switch control circuit.

At present, a light-emitting diode is widely used, and a light-emitting diode driving device is used to drive a light-emitting diode, so that a light-emitting diode driving device is very important.

Please refer to FIG. 7 , which is a block circuit diagram of a related art LED driving device. A related art LED driving device 50 is applied to a plurality of LED units 20, an AC power supply device 30, and a DC power supply device 40; the related art LED driving device 50 includes a The power supply unit 120, a control unit 102, a signal switching unit 106, a signal terminal resistor 118 and a signal voltage generating unit 108 are provided.

The control power supply unit 120 is configured to supply power to the control unit 102. As shown in FIG. 7, when the control unit 102 operates, two currents flow through the signal terminal resistor 118: one from the control power supply unit 120. The first current 122 and a second current 124 from the control unit 102.

If the control unit 102 includes a wireless function, the second current 124 of the control unit 102 may be greater, such that the signal terminal resistor 118 may overheat, and the related art LED driver 50 will be overheated. problem.

In order to solve the above problems, an object of the present invention is to provide a light emitting diode driving device having a switching control circuit.

In order to achieve the above object of the present invention, a light-emitting diode driving device having a switch control circuit of the present invention is applied to a plurality of light-emitting diode units, and the light-emitting diode driving device having the switch control circuit includes: a control unit a switch control circuit, the switch control circuit is electrically connected to the control unit; a signal switch unit, the signal switch unit is electrically connected to the control unit, the switch control circuit and the light emitting diode units; The control power supply unit is configured to receive a DC power supply to provide the control unit with a working power. The control power supply unit is electrically connected to the control unit, the switch control circuit and the signal switch unit, and the control power supply unit and the signal switch unit And the light emitting diode units are connected in series. The control unit controls the switch control circuit to switch an on state and a non-conduction state of the signal switch unit to generate an illumination signal to drive the LED units; when the signal switch unit is turned on, the DC power source The signal switching unit is configured to form a high level portion of the light emitting signal; when the signal switching unit is not turned on, the DC power source does not pass through the signal switching unit to form a low level portion of the light emitting signal.

The effect of the invention is to avoid the problem of overheating of the LED driver.

In order to further understand the techniques, means, and effects of the present invention in order to achieve the intended purpose, refer to the following detailed description of the invention.

10‧‧‧Lighting diode driving device with switch control circuit

20‧‧‧Lighting diode unit

30‧‧‧AC power supply unit

40‧‧‧DC power supply unit

50‧‧‧Light-emitting diode driving device of related technology

102‧‧‧Control unit

104‧‧‧Switch Control Circuit

106‧‧‧Signal switch unit

108‧‧‧Signal voltage generating unit

110‧‧‧Electric circuit auxiliary circuit

112‧‧‧Controlled terminal

114‧‧‧Control terminal capacitor

116‧‧‧ diode

118‧‧‧Signal resistance

120‧‧‧Control power unit

122‧‧‧First current

124‧‧‧second current

202‧‧‧Charging subunit

204‧‧‧Low voltage detection subunit

206‧‧‧Lighting diode subunit

208‧‧‧Lighting diode

210‧‧‧Lighting diode driver

302‧‧‧AC power supply

402‧‧‧DC power supply

404‧‧‧Lighting signal

410‧‧‧High-level section

412‧‧‧low level

10202‧‧‧low level signal

10204‧‧‧High level signal

10402‧‧‧Optocell unit

10404‧‧‧First voltage divider resistor

10406‧‧‧Second voltage divider resistor

10408‧‧‧First resistance

10802‧‧‧Signal end-sense diode

10804‧‧‧Signal Capacitance

11002‧‧‧Auxiliary transistor unit

11004‧‧‧First auxiliary voltage divider resistor

11006‧‧‧Second auxiliary voltage divider resistor

11008‧‧‧Auxiliary switch unit

11010‧‧‧First auxiliary resistor

11012‧‧‧second auxiliary resistor

T1‧‧‧ first time zone

T2‧‧‧ second time zone

1 is a block circuit diagram of a first embodiment of a light emitting diode driving device having a switching control circuit of the present invention.

2 is a block circuit diagram of a second embodiment of a light-emitting diode driving device having a switch control circuit of the present invention.

3A-3B are waveform diagrams showing an embodiment of the present invention.

4 is a block circuit diagram of a third embodiment of a light-emitting diode driving device having a switch control circuit of the present invention.

Fig. 5 is a block circuit diagram showing a fourth embodiment of a light-emitting diode driving device having a switch control circuit of the present invention.

Fig. 6 is a block circuit diagram showing a fifth embodiment of a light-emitting diode driving device having a switch control circuit of the present invention.

Fig. 7 is a block circuit diagram of a related art LED driving device.

FIG. 8 is a block diagram of the light emitting diode unit applied to FIGS. 4 and 6.

Please refer to FIG. 1, which is a block circuit diagram of a first embodiment of a light-emitting diode driving device having a switch control circuit of the present invention. A light-emitting diode driving device 10 (hereinafter referred to as a light-emitting diode driving device 10) having a switch control circuit is applied to a plurality of light-emitting diode units 20, an AC power supply device 30, and a DC power supply. The light-emitting diode unit 20 is connected to each other in series, and the light-emitting diode units 20 can be, for example, but not limited to, a plurality of two-legged light-emitting diodes.

The LED driving device 10 includes a control unit 102, a switch control circuit 104, a signal switching unit 106, a diode 116, a signal voltage generating unit 108, and a control power unit 120. The switch control circuit 104 is electrically connected to the control unit 102; the signal switch unit 106 is electrically connected to the control unit 102, the switch control circuit 104, and the light emitting diode units 20; The signal voltage generating unit 108 is electrically connected to the control unit 102 and the switch control circuit 104; the diode 116 is electrically connected to the control unit 102, the switch control circuit 104, the light emitting diode units 20, and the a signal voltage generating unit 108 and the signal switching unit 106; the control power unit 120 is electrically connected to the control unit 102, the switch control circuit 104, and the signal switch unit 106; the control power unit 120, the signal switch unit 106, and The light emitting diode units 20 are connected in series.

The AC power supply device 30 transmits an AC power source 302 to the DC power supply device 40; the DC power supply device 40 converts the AC power source 302 to obtain a DC power source 402; the DC power supply device 40 transmits the DC power source 402 to the The LED device 10 is configured to receive the DC power source 402 to provide a working power of the control unit 102. When a high level portion 410 of an illumination signal 404 is to be formed, the control unit 102 controls the switch control circuit 104 to turn on the signal switch unit 106 such that the DC power source 402 passes through the signal switch unit 106 to form the drive. The high level portion 410 of the illuminating signal 404 of the illuminating diode unit 20. When a low level portion 412 of the illuminating signal 404 is to be formed, the control unit 102 controls the switch control circuit 104 to not turn on the signal switching unit 106, so that the signal voltage generating unit 108 utilizes the DC power source 402 to form The low level portion 412 of the illuminating signal 404. The LED driving device 10 transmits the illuminating signal 404 including the high-level portion 410 and the low-level portion 412 to the illuminating diode units 20 to drive the plurality of illuminating diode units 20 The high-level portion 410, the low-level portion 412, and the illuminating signal 404 are described in detail later. The control power unit 120 is configured to supply power to the control unit 102.

In other words, the control unit 102 controls the switch control circuit 104 to switch an on state and a non-conduction state of the signal switch unit 106 to generate the illumination signal 404 to drive the LED units 20; When the switch unit 106 is turned on, the DC power source 402 passes through the signal switch unit 106 to form the high level portion 410 of the light emitting signal 404; when the signal switch unit 106 does not When turned on, the DC power source 402 does not pass through the signal switching unit 106 to form the low level portion 412 of the illumination signal 404.

Please refer to FIG. 2 , which is a block diagram of a second embodiment of a light-emitting diode driving device with a switch control circuit according to the present invention; the components shown in FIG. 2 are the same as those shown in FIG. 1 , and are simple factors. Therefore, the description thereof will not be repeated here. The LED driving device 10 further includes a power take-off circuit auxiliary circuit 110 and a signal terminal resistor 118. The switch control circuit 104 includes a transistor unit 10402, a first voltage dividing resistor 10404, a second voltage dividing resistor 10406, and a first resistor 10408. The power take-off circuit auxiliary circuit 110 includes an auxiliary transistor unit 11002, a first auxiliary voltage dividing resistor 11004, a second auxiliary voltage dividing resistor 11006, an auxiliary switching unit 11008, a first auxiliary resistor 11010, and a second auxiliary. Resistor 11012. The signal voltage generating unit 108 includes a signal end register diode 10802 and a signal end capacitor 10804. The control power unit 120 includes a control terminal Zener diode 112 and a control terminal capacitor 114. The transistor unit 10402 can be, for example, but the invention is not limited to a bipolar junction transistor (BJT) or a gold oxide half field effect transistor (MOSFET); the auxiliary transistor unit 11002 can be, for example, but not limited by the invention. It is a bipolar junction transistor or a gold oxide half field effect transistor.

The transistor unit 10402 is electrically connected to the control unit 102 and the signal switching unit 106; the first voltage dividing resistor 10404 is electrically connected to the control unit 102, the signal switching unit 106 and the transistor unit 10402; The voltage dividing resistor 10406 is electrically connected to the signal switching unit 106, the transistor unit 10402, the first voltage dividing resistor 10404 and the signal voltage generating unit 108; the first resistor 10408 is electrically connected to the control unit 102, The signal switching unit 106 and the transistor unit 10402. The power take-off circuit auxiliary circuit 110 is electrically connected to the control unit 102, the switch control circuit 104, the signal switch unit 106 and the signal voltage generating unit 108; the auxiliary transistor unit 11002 is electrically connected to the control unit 102; The first auxiliary voltage dividing resistor 11004 is electrically connected to the control unit 102, the switch control circuit 104, the signal switch unit 106, and the auxiliary transistor unit 11002; The second auxiliary voltage dividing resistor 11006 is electrically connected to the switch control circuit 104, the signal voltage generating unit 108, the auxiliary transistor unit 11002 and the first auxiliary voltage dividing resistor 11004; the auxiliary switching unit 11008 is electrically connected to the The control unit 102, the switch control circuit 104, the signal switch unit 106, the auxiliary transistor unit 11002, the first auxiliary voltage dividing resistor 11004 and the second auxiliary voltage dividing resistor 11006; the first auxiliary resistor 11010 is electrically connected The control unit 102, the switch control circuit 104, the signal switch unit 106, and the auxiliary transistor unit 11002; the second auxiliary resistor 11012 is electrically connected to the switch control circuit 104, the signal voltage generating unit 108, and the auxiliary The switch unit 11008 and the second auxiliary voltage dividing resistor 11006. The control terminal capacitor 112 is electrically connected to the control unit 102, the switch control circuit 104 and the signal switch unit 106; the control terminal capacitor 114 is electrically connected to the control unit 102, the switch control circuit 104, The signal switching unit 106 and the control terminal are connected to the diode 112; the control terminal capacitor 114 is connected in parallel to the control unit 102 and the control terminal sina diode 112; the control terminal capacitor 114 and the control terminal The pole bodies 112 are connected in parallel. The signal terminal is connected to the switch control circuit 104 and the light emitting diode unit 20; the diode 116 is electrically connected to the switch control circuit 104, the signal switch unit 106, and the The light-emitting diode unit 20 and the signal end-sense diode 10802; the signal-end resistor 118 is electrically connected to the control unit 102, the switch control circuit 104, the signal-end diverger diode 10802, and the second The signal terminal capacitors 10804 are electrically connected to the switch control circuit 104, the light emitting diode units 20, the diode 116, the signal terminal resistor 118, and the signal terminal arrester diode 10802.

The transistor unit 10402 is a pnp-type bipolar junction transistor. The emitter of the transistor unit 10402 is connected to the control unit 102. The base of the transistor unit 10402 A base is coupled to the first resistor 10408, and a collector of the transistor unit 10402 is coupled to the signal switching unit 106. The signal switching unit 106 is a p-type metal oxide semiconductor field effect transistor, and a source of the signal switching unit 106 is connected to the control terminal sina diode 112. , A gate of the signal switching unit 106 is connected to the transistor unit 10402, and a drain of the signal switching unit 106 is connected to the LED unit 20.

The auxiliary transistor unit 11002 is a pnp type bipolar junction transistor, the emitter of the auxiliary transistor unit 11002 is connected to the control unit 102, and the base of the auxiliary transistor unit 11002 is connected to the first auxiliary resistor. 11010. The collector of the auxiliary transistor unit 11002 is connected to the auxiliary switch unit 11008. The auxiliary switch unit 11008 is a p-type MOS field effect transistor, the source of the auxiliary switch unit 11008 is connected to the control terminal sina diode 112, and the gate of the auxiliary switch unit 11008 is connected to the auxiliary power The crystal unit 11002 has a drain connected to the second auxiliary resistor 11012.

The control unit 102 transmits a low level signal 10202 to the transistor unit 10402 such that the transistor unit 10402 is non-conducting, and the voltage of the gate of the signal switching unit 106 (eg, -5 volts or -10 volts) The voltage of the gate of the signal switching unit 106 is less than the voltage of the source of the signal switching unit 106, so that the signal switching unit 106 is turned on, and is determined by the first voltage dividing resistor 10404 and the second voltage dividing resistor 10406. The DC power source 402 is passed through the signal switching unit 106 to form the high level portion 410 of the illumination signal 404.

The control unit 102 transmits a high level signal 10204 to the transistor unit 10402 such that the transistor unit 10402 is turned on, and the high level signal 10204 is transmitted to the gate of the signal switching unit 106. The signal switching unit The voltage of the gate of 106 is the voltage of the high level signal 10204 plus the voltage of the junction of the first voltage dividing resistor 10404 and the second voltage dividing resistor 10406 (ie, by the first voltage dividing resistor 10404 and the The second voltage dividing resistor 10406 divides the DC power source 402), so the voltage of the gate of the signal switching unit 106 may be equal to or greater than the voltage of the source of the signal switching unit 106 (for example, the source of the signal switching unit 106). The voltage of the pole plus 5 volts causes the signal switching unit 106 to be non-conducting, so that the voltage of the drain of the signal switching unit 106 drops, and then the signal voltage generating unit 108 uses the DC power source 402 to form the illuminating signal 404. The low level portion 412. Low level part 412 is used to clamp the voltage of the drain of the signal switching unit 106 to prevent the voltage of the drain of the signal switching unit 106 from being 0 volt, wherein if the voltage of the drain of the signal switching unit 106 is 0 volt, then The light emitting diode units 20 are inoperable. The low level signal 10202 and the high level signal 10204 are detailed later. When the signal switching unit 106 is not turned on, the signal voltage generating unit 108 uses the DC power source 402 to form the low level portion 412 of the lighting signal 404.

When the control unit 102 controls the switch control circuit 104 to not turn on the signal switch unit 106, the control unit 102 obtains a power take-off path through the first voltage dividing resistor 10404 and the second voltage dividing resistor 10406, or The control terminal capacitor 114 is powered; however, in order to reduce the current consumption, the resistance values of the first voltage dividing resistor 10404 and the second voltage dividing resistor 10406 are generally large; for the circuit matching design, the control may be allowed. The operating current of the unit 102 is insufficient; therefore, to ensure that the control unit 102 can normally receive power, when the control unit 102 controls the switch control circuit 104 to not turn on the signal switching unit 106, the power take-off circuit auxiliary circuit The control unit 102 provides a power take-off circuit to ensure that the control unit 102 operates. The resistance values of the first auxiliary voltage dividing resistor 11004 and the second auxiliary voltage dividing resistor 11006 are designed to be small.

When the control unit 102 transmits the low level signal 10202 to the transistor unit 10402, the transistor unit 10402 is not turned on such that the signal switch unit 106 is turned on, and the control unit 102 transmits the high level signal 10204 to the auxiliary unit. The transistor unit 11002 is such that the auxiliary transistor unit 11002 is turned on and the auxiliary switch unit 11008 is not turned on. When the control unit 102 transmits the high level signal 10204 to the transistor unit 10402, the transistor unit 10402 is turned on such that the signal switching unit 106 is not turned on, and the control unit 102 transmits the low level signal 10202 to the auxiliary unit. The transistor unit 11002 is such that the auxiliary transistor unit 11002 is non-conducting and the auxiliary switching unit 11008 is turned on, so that the power take-off circuit assisting circuit 110 provides the power take-off loop of the control unit 102 to ensure that the control unit 102 operates. That is, when the signal switching unit 106 is not turned on, the control unit 102 turns on the power take-off circuit auxiliary circuit 110 to receive the DC power source 402 to ensure the working power required by the control unit 102; When the signal switching unit 106 is turned on, the control unit 102 does not turn on the power take-off auxiliary circuit 110. When the signal switching unit 106 is turned on, the control unit 102 transmits the high level signal 10204 to the auxiliary transistor unit 11002, so that the auxiliary transistor unit 11002 is turned on to make the auxiliary switching unit 11008 non-conductive; when the signal switch When the unit 106 is not conducting, the control unit 102 transmits the low level signal 10202 to the auxiliary transistor unit 11002, so that the auxiliary transistor unit 11002 is not turned on to turn on the auxiliary switching unit 11008, and the auxiliary switching unit 11008 receives the The DC power source 402 is to ensure the operating power required by the control unit 102.

The control terminal snagging diode 112, the signal switching unit 106 and the illuminating diode units 20 are connected in series, so the current path of the control unit 102 is the same as the current path of the illuminating diode units 20. The current flowing through the signal terminal resistor 118 is reduced to improve the overheating problem of the related art; the control terminal receiving diode 112 receives and clamps the DC power source 402 to supply power to the control unit 102, which is originally The current of the current path of the light-emitting diode unit 20 is large, and the plurality of light-emitting diode units 20 can disperse power, and the control unit 102 that needs a large current is sufficiently supplied, so compared with the control end The power receiving mode of the control unit 102 in which the semiconductor diodes 112 and the light emitting diode units 20 are connected in parallel is capable of greatly reducing the temperature of the control unit 102 and the signal terminal resistor 118.

When the control unit 102 controls the switch control circuit 104 to not turn on the signal switch unit 106, the signal end sense diode 10802 receives and clamps the DC power source 402 to form the low level portion of the illumination signal 404. Part 412.

The source of the signal switching unit 106 is connected to the anode of the control terminal sinus diode 112, such that if the control unit 102 is directly connected to the switching unit 106, the low level is issued by the control unit 102. The signal 10202 and the high level signal 10204 will cause the voltage difference between the source of the signal switching unit 106 and the gate of the signal switching unit 106 to cause the drain of the signal switching unit 106 to be unblocked. Therefore, the present invention utilizes a transistor circuit (i.e., the switch controls the electricity The circuit 104 includes the transistor unit 10402, the first voltage dividing resistor 10404, the second voltage dividing resistor 10406 and the first resistor 10408) for voltage level conversion.

Please refer to FIG. 3A-3B, which are waveform diagrams of an embodiment of the present invention; and please refer to FIG. 2 at the same time. In FIG. 3A, the first waveform from top to bottom is the voltage transmitted from the control unit 102 to the emitter of the transistor unit 10402, the second waveform is the voltage of the gate of the signal switching unit 106, and the third The waveform is the voltage of the drain of the signal switching unit 106 (ie, the voltage waveform of the illuminating signal 404); in FIG. 3B, the first waveform from top to bottom is the voltage of the source of the signal switching unit 106, The two waveforms are the voltages that the control unit 102 transmits to the emitter of the auxiliary transistor unit 11002, and the third waveform is the voltage of the gate of the auxiliary switching unit 11008.

As shown in FIGS. 3A-3B: in a first time zone T1: the control unit 102 transmits the low level signal 10202 of 0 volts to the emitter of the transistor unit 10402, and the voltage of the gate of the signal switching unit 106. The high-level portion 410 of the illuminating signal 404 is the voltage of the source of the signal switching unit 106. The voltage of the source of the signal switching unit 106 is 100 volts, and the control unit 102 transmits the voltage to the source. The voltage of the emitter of the auxiliary transistor unit 11002 is 5 volts, and the voltage of the gate of the auxiliary switching unit 11008 is 5 volts of the voltage of the source of the signal switching unit 106.

In a second time zone T2: the control unit 102 transmits the high level signal 10204 of 5 volts to the emitter of the transistor unit 10402, and the voltage of the gate of the signal switching unit 106 is the source of the signal switching unit 106. The voltage of the pole is increased by 5 volts, and the low level portion 412 of the illuminating signal 404 is the voltage of the cathode of the signal terminal 801, and the voltage of the source of the signal switching unit 106 is 100 volts. The voltage transmitted from the unit 102 to the emitter of the auxiliary transistor unit 11002 is 0 volts, and the voltage of the gate of the auxiliary switching unit 11008 is -5 volts; that is, the control unit 102 transmits to the auxiliary transistor unit 11002. The voltage of the emitter and the radiation transmitted by the control unit 102 to the transistor unit 10402 The voltage of the pole is reversed (i.e., reverse controlled), and the voltage of the gate of the auxiliary switching unit 11008 is opposite to the voltage of the gate of the signal switching unit 106.

Please refer to FIG. 4 , which is a block diagram of a third embodiment of a light-emitting diode driving device with a switch control circuit according to the present invention; the components shown in FIG. 4 are the same as those shown in the above-mentioned figures; Concise factors, so the description is not repeated here. Please refer to FIG. 8 , which is a block diagram of the light emitting diode unit applied to FIGS. 4 and 6 . As shown in FIG. 8, each of the LED units 20 includes a charging subunit 202, a low voltage detecting subunit 204, and a light emitting diode subunit 206; the LED subunit 206 A light emitting diode 208 and a light emitting diode driver 210 are included. The charging subunit 202 is electrically connected to the signal switching unit 106; the low voltage detecting subunit 204 is electrically connected to the signal switching unit 106 and the charging subunit 202; the LED subunit 206 is electrically connected The signal switching unit 106, the charging subunit 202 and the low voltage detecting subunit 204; the LED 208 is electrically connected to the signal switching unit 106 and the charging subunit 202; the LED driver The electrical switch unit 106 is electrically connected to the signal switching unit 106 , the charging sub-unit 202 , the low voltage detecting sub-unit 204 , and the LED 208 .

The light emitting diode unit 20 is configured to receive the high level portion 410 of the light emitting signal 404 and the low level portion 412 (eg, zero volts or near zero volts); according to the height of the illuminating signal 404 The light-emitting diode driver 210 drives the light-emitting diode 208 to perform a light-emitting mode switching. When the high-level portion 410 of the illuminating signal 404 is formed, the LED driving device 10 having the switching control circuit uses the high-level portion 410 of the illuminating signal 404 to supply power to the illuminating diode. The low voltage detecting subunit 204 detects the low level portion 412 of the illuminating signal 404 to notify the illuminating diode driver when the low level portion 412 of the illuminating signal 404 is formed. The low-level portion 412 of the illuminating signal 404, and the charging sub-unit 202 supplies power to the low-voltage detecting sub-unit 204 and the illuminating diode sub-unit 206.

Please refer to FIG. 5 , which is a block circuit diagram of a fourth embodiment of a light-emitting diode driving device with a switch control circuit according to the present invention; the components shown in FIG. 5 are the same as those shown in FIGS. Factor, so the description is not repeated here. Please refer to FIG. 6 , which is a block circuit diagram of a fifth embodiment of a light-emitting diode driving device with a switch control circuit according to the present invention; the components shown in FIG. 6 are the same as those shown in FIGS. Factor, so the description is not repeated here. As shown in FIGS. 5 and 6, the aforementioned elements are disposed in opposite directions at the negative end.

However, the above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made by the scope of the present invention should still be covered by the patent of the present invention. The scope of the scope is intended to protect.

Claims (11)

A light-emitting diode driving device having a switch control circuit is applied to a plurality of light-emitting diode units, and the light-emitting diode driving device having the switch control circuit comprises: a control unit; a switch control circuit, the switch control The circuit is electrically connected to the control unit; a signal switch unit electrically connected to the control unit, the switch control circuit and the light emitting diode units; and a control power unit for receiving the current The control power supply unit is electrically connected to the control unit, the switch control circuit and the signal switch unit, the control power supply unit, the signal switch unit and the light emitting diode units a series connection, wherein the control unit controls the switch control circuit to switch an on state and a non-conduction state of the signal switch unit to generate an illumination signal to drive the LED units; when the signal switch unit is turned on The DC power source passes through the signal switching unit to form a high level portion of the illuminating signal When the signal switching unit is not turned on, the DC power source does not pass through the signal switching unit to form a low level portion of the illuminating signal; wherein the switch control circuit comprises: a transistor unit, the transistor unit is electrically connected To the control unit and the signal switching unit, wherein the control unit transmits a low level signal to the transistor unit such that the transistor unit is non-conducting and causes the signal switching unit to be turned on; the control unit transmits a high level signal Up to the transistor unit, the transistor unit is turned on and the signal switching unit is non-conducting; wherein a gate of the signal switching unit is connected to the transistor unit; the transistor unit is a bipolar junction transistor or A gold oxide half field effect transistor. The illuminating diode driving device with a switch control circuit according to claim 1, further comprising: a signal voltage generating unit electrically connected to the control unit, the switch control circuit, and the The light emitting diode unit and the signal switching unit, wherein when the signal switching unit is not turned on, the signal voltage generating unit uses the DC power source to form the low level portion of the light emitting signal. The illuminating diode driving device with a switch control circuit according to claim 1, wherein the switch control circuit further comprises: a first voltage dividing resistor, the first voltage dividing resistor is electrically connected to the control unit The signal switching unit and the transistor unit; a second voltage dividing resistor, the second voltage dividing resistor is electrically connected to the signal switching unit, the transistor unit and the first voltage dividing resistor; and a first resistor The first resistor is electrically connected to the control unit, the signal switching unit, and the transistor unit. The illuminating diode driving device with a switch control circuit according to claim 1, further comprising: a power take-off circuit auxiliary circuit electrically connected to the control unit and the switch control circuit And the signal switching unit, wherein when the signal switching unit is not conducting, the control unit turns on the power take-off auxiliary circuit to receive the DC power to ensure the working power required by the control unit; when the signal switching unit is turned on The control unit does not turn on the power take-off auxiliary circuit. The illuminating diode auxiliary device having a switch control circuit according to the fourth aspect of the invention, wherein the auxiliary circuit auxiliary circuit comprises: an auxiliary transistor unit electrically connected to the control unit; and An auxiliary switching unit electrically connected to the control unit, the switch control circuit, the signal switching unit and the auxiliary transistor unit, wherein the control unit transmits the high level when the signal switching unit is turned on Signaling to the auxiliary transistor unit such that the auxiliary transistor unit is turned on to make the auxiliary switching unit non-conducting; when the signal switching unit is not conducting, the control unit transmits the low level signal to the auxiliary transistor unit, so that The auxiliary transistor unit is non-conducting to turn on the auxiliary switching unit, and the auxiliary switching unit receives the DC power source to ensure the working power required by the control unit. The illuminating diode driving device with a switch control circuit according to the fifth aspect of the invention, wherein the auxiliary circuit of the power take-off circuit further comprises: a first auxiliary voltage dividing resistor, the first auxiliary voltage dividing resistor is electrically connected To the control unit, the switch control circuit, the signal switch unit and the auxiliary transistor unit; a second auxiliary voltage dividing resistor, the second auxiliary voltage dividing resistor is electrically connected to the switch control circuit, the auxiliary transistor unit And the first auxiliary voltage dividing resistor; the first auxiliary resistor, the first auxiliary resistor is electrically connected to the control unit, the switch control circuit, the signal switch unit and the auxiliary transistor unit; and a second auxiliary resistor The second auxiliary resistor is electrically connected to the switch control circuit, the auxiliary switch unit, and the second auxiliary voltage dividing resistor. The light-emitting diode driving device with a switch control circuit according to claim 1, wherein the control power supply unit comprises: a control terminal, a diode, and the control terminal is electrically connected to the diode The control unit, the switch control circuit and the signal switch unit; and a control terminal capacitor electrically connected to the control unit, the switch control circuit, the signal switch unit, and the control terminal The control terminal capacitor is connected in parallel to the control unit and the control terminal, and the diode is connected. The control terminal, the signal switching unit and the light emitting diode units are connected in series; the control terminal receives and clamps the DC power to supply power to the control unit. The illuminating diode driving device with a switch control circuit according to the second aspect of the invention, wherein the signal voltage generating unit comprises: a signal end register diode, and the signal end is connected to the diode electrical connection. And to the switch control circuit and the light emitting diode units, wherein when the control unit controls the switch control circuit to not turn on the signal switch unit, the signal terminal senses the diode to receive and clamp the DC power source to form The low level portion of the illuminating signal. The illuminating diode driving device with a switch control circuit according to claim 8 further includes: a diode, the diode is electrically connected to the switch control circuit, the signal switch unit, and the a light emitting diode unit and the signal end detecting diode; and a signal terminal resistor electrically connected to the control unit, the switch control circuit, the signal terminal, the diode and the diode The signal voltage generating unit further includes: a signal terminal capacitor electrically connected to the switch control circuit, the light emitting diode unit, the diode, the signal terminal resistor and the signal end Jenus diode. The illuminating diode driving device with a switch control circuit according to claim 1, wherein each of the illuminating diode units comprises: a charging subunit electrically connected to the signal a switching unit; a low voltage detecting subunit electrically connected to the signal switching unit and the charging subunit; and a light emitting diode subunit, the LED subunit electrical Connected to the signal switching unit, the charging subunit, and the low voltage detecting subunit, The light emitting diode subunit includes: a light emitting diode electrically connected to the signal switching unit and the charging subunit; and a light emitting diode driver, the light emitting diode driver The light-emitting diode unit is configured to receive the high-level portion of the light-emitting signal and the light-emitting diode unit, and the light-emitting diode unit a low-level portion; the light-emitting diode driver drives the light-emitting diode to perform a light-emitting mode switching according to the high-level portion and the low-level portion of the light-emitting signal; wherein when the light-emitting signal is When the high-level portion is formed, the LED driving device having the switch control circuit uses the high-level portion of the illuminating signal to supply power to the illuminating diode unit; wherein when the illuminating signal is low When the level portion is formed, the low voltage detecting subunit detects the low level portion of the illuminating signal to notify the low level portion of the illuminating signal of the illuminating diode driver, and the charger Unit power supply to the Voltage detecting unit and the sub-light emitting diode subunit. The illuminating diode driving device with a switch control circuit according to claim 5, wherein the auxiliary transistor unit is a bipolar junction transistor or a MOS field effect transistor.