CN109156067B - lighting switch - Google Patents

Abstract

A lighting switch (100), the lighting switch (100) comprises a first terminal (101), a second terminal (102), a multi-stage switch (130), a control circuit (140), a delayed turn-off branch (160) and a normal switch branch (150), the control circuit (140), the delayed turn-off branch (160) and the normal switch branch (150) are connected between the first terminal (101) and the second terminal (102), the multi-stage switch (130) is connected with the control circuit (140), and the multi-stage switch (130) is used for conducting the first terminal (101) with the second terminal (102) through the normal switch branch (150) or the delayed turn-off branch (160) under the operation of a user through the control circuit (140).

Description

lighting switch

technical field

The invention relates to the field of switches, in particular to a lighting switch.

Background technique

After the traditional lighting switch is turned off, the lights will be turned off immediately. Therefore, it will cause inconvenience for users to move in the dark for a short time at night. Light is prone to difficult directions, collisions or falls, especially when there are elderly and children at home. If the above conditions occur, it may be dangerous to human health, that is, the use of traditional lighting switches is not safe and experience. , it is necessary to improve.

SUMMARY OF THE INVENTION

In view of this, it is necessary to provide a light switch with high safety and experience.

A lighting switch includes a first terminal, a second terminal, a multi-gear switch, a control circuit, a delay closing branch and a common switch branch, the first terminal and the second terminal are used for electrical Connected to the lighting circuit where the lighting lamp is located, the control circuit, the delay closing branch and the common switch branch are connected between the first terminal and the second terminal, and the multi-speed switch is connected to the control a circuit, the multi-position switch is used to conduct the first terminal through the common switch branch or the delay closing branch and the second terminal through the control circuit under the operation of the user , when the control circuit conducts the first terminal through the common switch branch with the second terminal, the common switch branch controls the lighting lamp to be normally turned on or off; when the common switch branch is When the control circuit conducts the first terminal to the second terminal through the delay closing branch, the delay closing branch controls the lighting lamp to be turned off after a delay of a predetermined time, wherein the control circuit Including a first end, a second end and a third end, the common switch branch includes a conducting branch and a closing branch, when the multi-speed switch is connected to the first end, the control circuit will A terminal is connected to the second terminal through the delay closing branch, and when the multi-position switch is connected to the second terminal, the control circuit connects the first terminal to the second terminal through the conduction branch. The second terminal is connected, and when the multi-speed switch is connected to the third terminal, the control circuit connects the first terminal to the second connection via the closed branch in the common switch branch end.

In one embodiment, the conduction branch includes a first diode, a first resistor and a one-way thyristor, the control circuit includes a first switch, and the anode of the one-way thyristor is connected to the The first terminal, the cathode of the one-way thyristor is connected to the second terminal, the anode of the first diode is connected to the first terminal, and the cathode of the first diode is connected to the first terminal through the first terminal. The two conducting ends of the switch and the first resistor are connected to the control end of the one-way thyristor, the control end of the first switch is connected to the second end, and when the control end of the multi-speed switch is connected When the second end is connected, the first switch is turned on.

In one embodiment, the delay shutdown branch includes a first capacitor, the first resistor and the one-way thyristor, and one end of the first capacitor is connected to the first resistor and is close to the first One end of the switch and the other end of the first capacitor are connected to the second terminal. When the control end of the multi-position switch is connected to the first end, the first switch is turned off.

In one embodiment, the control circuit further includes a second switch, and two conducting terminals of the second switch are respectively connected to one end of the first resistor adjacent to the first switch and the second terminal. , the shutdown branch in the common switch branch includes the one-way thyristor, the first resistor, the first capacitor and the second switch, and the control end of the second switch is connected to the The third end, when the control end of the multi-speed switch is connected to the third end, the first switch is turned off, and the second switch is turned on.

In one embodiment, the control circuit further includes a second resistor, a third resistor and a fourth resistor, the second resistor is connected to the second switch and the first resistor adjacent to the first switch One end, the first end is connected to the control end of the first switch through the third resistor, and the control end of the first switch is also grounded through the fourth resistor.

In one embodiment, the control circuit further includes a fifth resistor, a sixth resistor, a seventh resistor and a second diode, and the third terminal is connected through the fifth resistor, the second two The anode of the electrode tube and the cathode of the second diode are connected to the control terminal of the first switch, the third terminal is also connected to the control terminal of the second switch through the sixth resistor, and the seventh terminal is connected to the control terminal of the second switch. The resistor is connected to the control end of the second switch and the end of the second switch away from the first resistor, and the second switch is connected to the first resistor adjacent to the first switch via the second resistor. one end.

In one embodiment, the first switch is a PNP-type bipolar transistor, and the second switch is an N-type field effect transistor.

In one embodiment, the lighting switch further includes a rectifier circuit, and the first terminal and the second terminal pass through the rectifier circuit and the multi-speed switch, the control circuit, and the common switch. The branch is connected to the delay closing branch, and the rectifier circuit is used to rectify the external voltage connected to the first terminal and the second terminal and then provide it to the multi-speed switch and the control circuit , the common switching branch and the delayed closing branch.

In one embodiment, the lighting switch further includes a voltage stabilizing circuit, the voltage stabilizing circuit is connected to the rectifying circuit, the voltage stabilizing circuit is used for stabilizing the external voltage rectified by the rectifying circuit, and The regulated external voltage is provided to the multi-speed switch, the control circuit, the common switch branch and the delay closing branch.

In one embodiment, the rectifier circuit includes a first input terminal, a second input terminal, a first output terminal and a second output terminal, the first input terminal is connected to the first connection terminal, and the second input terminal is connected to the first terminal. The input terminal is connected to the second terminal, the first output terminal is connected to the anode of the one-way thyristor, and the first output terminal is also connected to the anode of the first diode via the voltage regulator circuit and the control terminal of the multi-speed switch, and the second output terminal is connected to the negative electrode of the one-way thyristor.

In one embodiment, the voltage regulator circuit includes a third diode, an eighth resistor, a voltage regulator diode, and a second capacitor, and the first output terminal passes through the eighth resistor, the third diode The anode and cathode of the tube are connected to the anode of the first diode and the control terminal of the multi-speed switch, and the cathode of the third diode is also grounded through the cathode and anode of the zener diode. The cathodes of the three diodes are also grounded via the second capacitor.

Compared with the prior art, in the lighting switch of the present invention, since the delay closing branch is provided, the delay closing branch is used to control the lighting lamp to be turned off after a delay of a predetermined time, so that the user turns off the lighting lamp. Afterwards, the lighting light can still be obtained within the predetermined time, which facilitates the user to move, and is less prone to situations such as difficult directions, collisions or falls, and improves the use safety and experience of the lighting switch.

Further, in the lighting switch, through the setting of the multi-speed switch, the control circuit, the first terminal, the second terminal and the third terminal, the lighting lamp can be turned on, off, and off in a relatively simple and low-cost manner. And the control of delayed shutdown, that is, the three states of on, off and delayed shutdown of the lighting switch are realized, so the lighting switch has high practicability.

Furthermore, in the lighting switch, the common switch branch and the delay turn-off branch share components such as thyristor, first resistor, first diode, etc., which can be relatively simple and low-cost to realize common conduction. The three states of on, off and delayed off also make the lighting switch more practical.

The present invention also provides a lighting switch, which includes a first terminal, a second terminal, a control element, a common switch branch and a delay-off branch with a delay circuit, the first terminal and the second connection The terminal is used to be electrically connected to the lighting circuit where the lighting lamp is located, the control element, the common switch branch and the delay closing branch are connected between the first terminal and the second terminal, and the control element uses Under the operation of the user, the first terminal is connected with the common switch branch or the first terminal is connected with the delay closing branch, and the common switch branch is used for When the control element connects the first terminal to the common switch branch, the lighting lamp is controlled to be normally turned on or off; the delay-off branch is used for when the control element is connected to the delay-off branch The lighting lamp is controlled to be turned off after a delay of a predetermined time.

In the first embodiment, the control switch includes a control circuit and a multi-speed switch, the multi-speed switch is connected to the control circuit, and the multi-speed switch is used to switch the control circuit to the control circuit under the operation of the user. The first terminal is connected to the second terminal via the common switch branch or the delay closing branch, when the control circuit connects the first terminal to the common switch branch with the common switch branch. When the second terminal is turned on, the common switch branch controls the lighting to turn on or off normally; when the control circuit connects the first terminal to the second through the delay-off branch When the terminal is turned on, the delayed shutdown branch controls the lighting lamp to be turned off after a delay of a predetermined time.

In the first embodiment, the multi-speed switch includes a control terminal and a connecting element, the control circuit includes a first terminal, a second terminal and a third terminal, and the control terminal of the multi-speed switch is connected to the first terminal and the first terminal. Terminal connection, the common switch branch includes a conduction branch and a closing branch, when the connecting element connects the control terminal with the first terminal, the control circuit connects the first terminal through the The delay closing branch is connected to the second terminal, and when the connecting element connects the control terminal with the second terminal, the control circuit connects the first terminal through the conduction branch communicating with the second terminal, when the connecting element connects the control terminal with the third terminal, the control circuit connects the first terminal to the second terminal via the closed branch end.

In the first embodiment, the conduction branch includes a first diode, a first resistor and a one-way thyristor, the control circuit includes a first switch, and the anode of the one-way thyristor is connected to For the first terminal, the cathode of the thyristor is connected to the second terminal, the anode of the first diode is connected to the first terminal, and the cathode of the first diode is connected through the first switch The two conducting ends of the thyristor, the first resistor is connected to the control end of the one-way thyristor, the control end of the first switch is connected to the second end, when the control end of the multi-speed switch passes through the When the connection element is connected to the second end, the first switch is turned on.

In the first embodiment, the delay shutdown branch includes a first capacitor, the first resistor and the one-way thyristor, and one end of the first capacitor is connected to the first resistor and is close to the first resistor. One end of a switch and the other end of the first capacitor are connected to the second terminal. When the control terminal of the multi-position switch is connected to the first terminal through the connecting element, the first switch is turned off.

In the first embodiment, the control circuit further includes a second switch, and two conducting ends of the second switch are respectively connected to one end of the first resistor adjacent to the first switch and the second wiring terminal, the shutdown branch includes the one-way thyristor, the first resistor, the first capacitor and the second switch, the control terminal of the second switch is connected to the third terminal, when When the control terminal of the multi-speed switch is connected to the third terminal through the connection element, the first switch is turned off and the second switch is turned on.

In the first embodiment, the control circuit further includes a second resistor, a third resistor and a fourth resistor, the second resistor is connected to the second switch and the first resistor is adjacent to the first switch The first end is connected to the control end of the first switch through the third resistor, and the control end of the first switch is also grounded through the fourth resistor.

In the first embodiment, the control circuit further includes a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor and a second diode, and the third terminal is connected through the fifth resistor, The anode of the second diode and the cathode of the second diode are connected to the control terminal of the first switch, and the third terminal is also connected to the control terminal of the second switch through the sixth resistor , the seventh resistor is connected to the control end of the second switch and the end of the second switch away from the first resistor, the second switch is connected to the first resistor through the eighth resistor adjacent to all one end of the first switch.

In the first embodiment, the first switch is a PNP-type bipolar transistor, and the second switch is an N-type field effect transistor.

In the first embodiment, the lighting switch further includes a rectifier circuit, and the first terminal and the second terminal pass through the rectifier circuit and the multi-speed switch, the control circuit, the common The switch branch and the delay closing branch are connected, and the rectifier circuit is used for rectifying the external voltage connected to the first terminal and the second terminal and then providing it to the multi-speed switch, the control circuit, the common switch branch, and the delayed shutdown branch.

In the first embodiment, the lighting switch further includes a voltage stabilizing circuit, the voltage stabilizing circuit is connected to the rectifying circuit, and the voltage stabilizing circuit is used for stabilizing the external voltage rectified by the rectifying circuit, The regulated external voltage is provided to the multi-speed switch, the control circuit, the common switch branch and the delay closing branch.

In the first embodiment, the rectifier circuit includes a first input terminal, a second input terminal, a first output terminal and a second output terminal, the first input terminal is connected to the first connection terminal, and the first input terminal is connected to the first terminal. The two input terminals are connected to the second terminal, the first output terminal is connected to the anode of the thyristor, and the first output terminal is also connected to the anode of the first diode and the anode through the voltage regulator circuit. The control terminal of the multi-speed switch, and the second output terminal is connected to the negative electrode of the thyristor.

In the first embodiment, the voltage regulator circuit includes a third diode, a ninth resistor, a voltage regulator diode and a second capacitor, and the first output terminal is connected through the ninth resistor, the third and second capacitors The anode and cathode of the pole tube are connected to the anode of the first diode and the control terminal of the multi-speed switch, and the cathode of the third diode is also grounded through the cathode and anode of the zener diode. The cathode of the third diode is also grounded via the second capacitor.

In the second embodiment, the common switch branch includes a first end, a second end and a conducting circuit, the first end is suspended, and the second end is connected to the second wiring through the conducting circuit terminal; the control element is used to control the connection between the first terminal and the first terminal to control the lighting lamp to be turned off; the control element is used to control the connection between the first terminal and the second terminal to control the lighting to be turned on.

In a second embodiment, the delay closing branch includes a third terminal and a delay circuit, the third terminal is connected to the second terminal via the delay circuit; the control element is used to control the The first terminal is connected with the third terminal to control the lighting lamp to turn off after delaying the predetermined time.

In the second embodiment, the control element includes a multi-position switch, and the multi-position switch is used to selectively connect the first terminal to the first terminal and the second terminal under the operation of the user. , or the third terminal is connected, so as to control the lighting lamp to be turned off, turned on, or delayed to turn off by the predetermined time.

In the second embodiment, the multi-gear switch is a multi-gear knob or a multi-gear button.

In the second embodiment, the conducting circuit includes a diode, a thyristor and a resistor, the anode of the diode is connected to the second end, and the cathode of the diode is connected to the thyristor The anode, the cathode of the one-way thyristor is used for connecting to the second terminal, the second terminal is grounded, and the resistor is connected to the second terminal and the control electrode of the one-way thyristor.

In the second embodiment, the delay circuit includes a capacitor, the resistor and the one-way thyristor, the anode of the one-way thyristor is further connected to the third terminal, and the capacitor is connected to between the second end and the second terminal.

In a second embodiment, the lighting switch further includes a rectifier circuit, and the first terminal and the second terminal are connected to the common switch branch and the delay closing branch through the rectifier circuit , the rectifier circuit is used for the first terminal and the second terminal to be rectified and then provided to the common switch branch and the delay shutdown branch.

In the second embodiment, the rectifier circuit includes a first input terminal, a second input terminal, a first output terminal and a second output terminal, the first input terminal is connected to the first connection terminal, and the first input terminal is connected to the first terminal. Two input terminals are connected to the second terminal, the first output terminal is connected to the control element, and the second output terminal is connected to the cathode of the triac and the capacitor to connect the second terminal The terminal is connected to the common switch branch and the delay closing branch.

In the second embodiment, the rectifier circuit is a full-bridge rectifier circuit.

Compared with the prior art, in the lighting switch of the present invention, since the delay closing branch is provided, the delay closing branch is used to control the lighting lamp to be turned off after a delay of a predetermined time, so that the user turns off the lighting lamp. Afterwards, the lighting light can still be obtained within the predetermined time, which facilitates the user to move, and is less prone to situations such as difficult directions, collisions or falls, and improves the use safety and experience of the lighting switch.

Further, in the lighting switch, through the setting of the multi-speed switch, the control circuit, the first terminal, the second terminal and the third terminal, the lighting lamp can be turned on, off, and off in a relatively simple and low-cost manner. And the control of delayed shutdown, that is, the three states of on, off and delayed shutdown of the lighting switch are realized, so the lighting switch has high practicability.

Further, in the lighting switch, the common switch branch and the delay-off branch share components such as thyristors, resistors, diodes, etc., which can realize common on, off and delayed off in a relatively simple and low-cost way. The three states also make the light switch more practical.

Description of drawings

FIG. 1 is a circuit schematic diagram of the lighting switch according to the first embodiment of the present invention.

FIG. 2 is a schematic diagram of a specific circuit structure of the lighting switch shown in FIG. 1 .

FIG. 3 is a front structural view of the first embodiment of the multi-position switch of the lighting switch shown in FIG. 1 .

4 is a circuit schematic diagram of a lighting switch according to a second embodiment of the present invention.

FIG. 5 is a schematic diagram of a specific circuit structure of the lighting switch shown in FIG. 4 .

Description of main component symbols

Light switch 100, 100’

First terminal 101, 101’

Second terminal 102, 102’

Control element 103’

Multi-position switch 130

Console 131

connection element 132

control circuit 140

Common switch branch 150, 104’

On circuit 109’

Delay circuit 110’

Delay close branch 160, 105’

First end T1, 106’

Second end T2, 107’

The third end T3, 108

Rectifier circuit 110, 111'

Voltage Regulator Circuit 120

The first input terminal 111, 112'

Second input 112, 113'

First output 113, 114'

Second output 114, 115'

Diodes D1, D2, D3, D5', D1'-D4'

One-way thyristor SCR, SCR’

Resistors R1, R2, R3, R4, R5, R6, R7, R8,

R1’

Capacitors C1, C2, C1’

Power access terminal 201, 202, 201', 202'

Lights HL, 203’

The first switch VT1

Second switch Q1

Zener diode DW1

The following specific embodiments will further illustrate the present invention in conjunction with the above drawings.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that the terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in this description and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items. In addition, the terms "first", "second" and the like in the description and claims of the present invention and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods, products or devices.

Please refer to FIG. 1 , which is a schematic circuit diagram of the lighting switch 100 according to the first embodiment of the present invention. The lighting switch 100 includes a first terminal 101 , a second terminal 102 , a multi-speed switch 130 , a control circuit 140 , a delay closing branch 160 and a common switch branch 150 . The first terminal 101 and the second terminal 102 are used for electrical connection to the lighting circuit where the lighting lamp HL is located. The control circuit 140 , the delay closing branch 160 and the common switch branch 150 are connected between the first terminal 101 and the second terminal 102 , the multi-position switch 130 is connected to the control circuit 140 , The multi-position switch 130 is used for connecting the first terminal 101 to the second connection via the common switch branch 150 or the delay closing branch 160 through the control circuit 140 under the operation of the user. When the control circuit 140 conducts the first terminal 101 to the second terminal 102 via the common switch branch 150, the common switch branch 150 controls the lighting The lamp HL is normally turned on or off; when the control circuit 140 conducts the first terminal 101 with the second terminal 102 via the delay-off branch 160, the delay-off branch 160 controls the The lighting lamp HL is turned off after a delay of a predetermined time.

It can be understood that, in an embodiment, the circuit in which the lighting lamp HL is located includes at least power access terminals 201 and 202, and the power access terminals 201 and 202 may include a neutral wire terminal and a live wire terminal for connecting into 220V AC mains. The multi-speed switch 130 may be a three-speed switch, and may be a knob-type or push-button multi-speed switch.

Please refer to FIG. 2 and FIG. 3 , the multi-position switch 130 includes a control terminal 131 and a connecting element 132 , the control circuit 140 includes a first terminal T1 , a second terminal T2 and a third terminal T3 , the multi-position switch 130 The control terminal 131 is connected to the first terminal 101, and the common switch branch 150 includes an on branch and a closed branch. When the connection element 132 connects the control terminal 131 with the first terminal T1 connected, the control circuit 140 connects the first terminal 101 to the second terminal 102 via the delay closing branch 160 , when the connecting element 132 connects the control terminal 131 to the second terminal T2 connection, the control circuit 140 connects the first terminal 101 with the second terminal 102 via the conduction branch, when the connecting element 132 connects the control terminal 131 with the third terminal 102 Terminal T3 is connected, and the control circuit 140 connects the first terminal 101 to the second terminal 102 via the closed branch. It can be understood that, in this embodiment, the first terminal 101 and the second terminal 102 are connected to the multi-speed switch 130 , the control circuit 140 , the common switch branch 150 and the delayed shutdown via the rectifier circuit 110 and the voltage regulator circuit 120 . Branch 160 is connected.

Further, the conduction branch includes a first diode D1, a first resistor R1 and a one-way thyristor SCR, the control circuit 140 includes a first switch VT1, and the anode of the one-way thyristor SCR Connect the first terminal 101, the cathode of the one-way thyristor SCR is connected to the second terminal 102, the anode of the first diode D1 is connected to the first terminal 101, and the first diode The negative electrode of D1 is connected to the control electrode of the one-way thyristor SCR via the two conducting ends of the first switch VT1 and the first resistor R1, and the control end of the first switch VT1 is connected to the second terminal T2. When the lighting switch 100 is working and the lighting lamp HL is controlled to be turned off, the multi-speed switch 130 is further operated (for example, the operating surface of the multi-speed switch 130 is kept in a vertical state as shown in FIG. 3 ), so that all When the control terminal 131 of the multi-speed switch 130 is connected to the second terminal T2 through the connecting element 132 , the first switch VT1 is turned on, that is, the first terminal 101 is under the control of the multi-speed switch 130 . Connected with the second terminal 102 via the conduction branch, the lighting switch 100 is in the conduction state, the lighting lamp HL is lit, and further, at this time, the first capacitor C1 is also charged , store charge. In this embodiment, the first switch is a PNP type bipolar transistor.

The delay shutdown branch 160 includes a first capacitor C1, the first resistor R1 and the one-way thyristor SCR. One end of the first capacitor C1 is connected to the first resistor R1 and is close to the first switch. One end of VT1 and the other end of the first capacitor C1 are connected to the second terminal 102 . When the lighting switch 100 is working and the lighting lamp HL is controlled to be turned on, the multi-speed switch 130 is further operated (for example, the operating surface of the multi-speed switch 130 is inclined toward the first direction), so that the multi-speed switch 130 is tilted toward the first direction. When the control terminal 131 of 130 is connected to the first terminal T1 through the connecting element 132 , the first switch VT1 is closed, that is, the first terminal 101 is closed through the delay under the control of the multi-speed switch 130 The branch 160 is connected to the second terminal 102, and the first capacitor C1 discharges through the first resistor R1, so that the one-way thyristor SCR continues to be turned on for a predetermined time and then turned off, that is, the lighting switch 100 is in the In the delayed off state, the illuminating lamp HL continues to light up for a predetermined time and then turns off (ie, it is turned off after a delay of a predetermined time). In this embodiment, when the resistance values of the resistors R1 are different, the predetermined time delays of the delay closing branch 160 are different. In addition, adjusting the value of the capacitor C1 can also change the predetermined time of the delay. Specifically, the predetermined time may be set according to actual needs, such as 10-60 seconds.

The control circuit 140 further includes a second switch Q1, two conducting ends of the second switch Q1 are respectively connected to one end of the first resistor R1 adjacent to the first switch VT1 and the second terminal 102, The shutdown branch includes the one-way thyristor SCR, the first resistor R1, the first capacitor C1 and the second switch Q1. If the lighting switch 100 works and the lighting lamp HL is controlled to be turned on, the multi-speed switch 130 is further operated (eg, the operating surface of the multi-speed switch 130 is tilted toward the opposite direction of the first direction), so that When the control terminal 131 of the multi-speed switch 130 is connected to the third terminal T3 through the connecting element 132, the first switch VT1 is turned off, the second switch Q1 is turned on, and the first capacitor C1 is connected through the connection element 132. The branch where the second switch Q1 is located is rapidly discharged, so that the thyristor SCR is turned off, and the lighting lamp HL is turned off. That is, the lighting switch 100 is immediately turned off. In this embodiment, the second switch is an N-type field effect transistor.

It can be understood that the control circuit 140 may further include a second resistor R2, a third resistor R3 and a fourth resistor R4, the second resistor R2 is connected to the second switch Q1 and the first resistor R1 is adjacent to the One end of the first switch VT1, the first end T1 is connected to the control end of the first switch VT1 through the third resistor R3, and the control end of the first switch VT1 is also grounded through the fourth resistor R4.

Further, the control circuit 140 may further include a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and a second diode D2, and the third terminal T3 passes through the fifth resistor R5, the The anode of the second diode D2 and the cathode of the second diode D2 are connected to the control terminal of the first switch VT1, and the third terminal T3 is also connected to the second switch via the sixth resistor R6. The control terminal of the switch Q1, the seventh resistor R7 is connected to the control terminal of the second switch Q1 and the end of the second switch Q1 away from the first resistor R1, the second switch Q1 is connected to the second switch Q1 through the first resistor R1. Two resistors R2 are connected to one end of the first resistor R1 adjacent to the first switch VT1.

As mentioned above, the lighting switch 100 further includes a rectifier circuit 110 , and the first terminal 101 and the second terminal 102 pass through the rectifier circuit 110 , the multi-speed switch 130 , and the control circuit 140 . , the common switch branch 150 and the delay shutdown branch 160 are connected, and the rectifier circuit 110 is used to rectify the external voltage connected to the first terminal 101 and the second terminal 102 to provide the The multi-speed switch 130 , the control circuit 140 , the common switch branch 150 and the delayed closing branch 160 .

Further, as mentioned above, the lighting switch 100 may further include a voltage stabilizing circuit 120 , the voltage stabilizing circuit 120 is connected to the rectifying circuit 110 , and the voltage stabilizing circuit 120 is used for rectifying the rectifying circuit 110 . The regulated external voltage is regulated, and the regulated external voltage is provided to the multi-speed switch 130 , the control circuit 140 , the common switch branch 150 and the delay shutdown branch 160 .

Specifically, the rectifier circuit 110 may be a full-bridge rectifier circuit composed of four diodes, including a first input end 111 , a second input end 112 , a first output end 113 and a second output end 114 . The terminal 111 is connected to the first terminal 101, the second input terminal 112 is connected to the second terminal 102, the first output terminal 113 is connected to the positive electrode of the one-way thyristor SCR, the first The output terminal 113 is also connected to the anode of the first diode D1 and the control terminal 131 of the multi-speed switch 130 via the voltage regulator circuit 120 , and the second output terminal 114 is connected to the one-way thyristor SCR the cathode.

The voltage regulator circuit 120 includes a third diode D3, an eighth resistor R8, a voltage regulator diode DW1 and a second capacitor C2. The first output terminal 111 passes through the eighth resistor R8 and the third diode. The anode and cathode of the tube D3 are connected to the anode of the first diode D1 and the control terminal 131 of the multi-speed switch 130, and the cathode of the third diode D3 is also connected to the cathode of the zener diode DW1, The anode is grounded, and the cathode of the third diode D3 is also grounded via the second capacitor C2.

Further, it can be understood that in the embodiment of FIG. 3 , the multi-position switch 130 can be operated by the user into a first mechanical state (eg, tilting toward the first direction), a second mechanical state (eg, a vertical state) and The third mechanical state (eg, tilting toward the opposite direction of the first direction) corresponds to the three states of off, on, and delayed off of the illuminating lamp HL, respectively.

Compared with the prior art, in the lighting switch 100 of the present invention, since the delay closing branch 160 is provided, the delay closing branch 160 is used to control the lighting lamp HL to turn off after a predetermined time delay, and then use The user can still obtain the lighting light within the predetermined time after the lighting lamp is turned off, which facilitates the user to move, and is less prone to situations such as difficulty in distinguishing directions, collisions or falls, and improves the use safety and experience of the lighting switch.

Further, in the lighting switch 100 , the lighting can be implemented in a relatively simple and low-cost manner through the settings of the multi-speed switch 130 , the control circuit 140 , the first terminal T1 , the second terminal T2 and the third terminal T3 The control of turning on, turning off, and delaying the closing of the lamp HL is to realize the three states of on, off and delayed closing of the lighting switch 100 , so the lighting switch 100 has high practicability.

Furthermore, in the lighting switch 100, the common switch branch 150 and the delay shutdown branch 160 share the unidirectional thyristor SCR, the first resistor R1, the first diode D1 and other elements, which can be compared. The three states of normal on, off and delayed off can be realized simply and at low cost, which also makes the lighting switch 100 more practical.

Please refer to FIG. 4, which is a schematic circuit diagram of the lighting switch 100' according to the second embodiment of the present invention. The lighting switch 100' includes a first terminal 101', a second terminal 102', a rectifier circuit 111', a control element 103', a common switch branch 104' and a delay closing branch 105' with a delay circuit 110' , the first terminal 101' and the second terminal 102' are used for electrical connection to the lighting circuit where the lighting lamp 203' is located, the control element 103', the common switch branch 104' and the delay closing branch 105' is connected between the first terminal 101' and the second terminal 102, and the control element 103' is used to connect the first terminal 101' to the common terminal 101' under the operation of the user. The switch branch 104' communicates or connects the first terminal 101' with the delay closing branch 105'. In this embodiment, the control element 103 ′, the common switch branch 104 ′ and the delay-off branch 105 ′ are connected to the first terminal 101 ′ and the second terminal 102 via the rectifier circuit 111 ′ ', however, it can be understood that in a modified embodiment, the rectifier circuit 111' may be omitted.

The common switch branch 104' is used to control the lighting lamp 203' to be normally turned on or off when the control element 103' connects the first terminal 101 to the common switch branch 104'; the The delay closing branch 105' is used to control the lighting lamp 203' to be turned off after a predetermined time delay when the control element 103' is connected to the delay closing branch 105'.

It can be understood that, in an embodiment, the circuit in which the lighting lamp 203' is located includes at least power access terminals 201', 202', and the power access terminals 201', 202' may include a neutral wire terminal and a live wire terminal, which is used to connect to AC mains.

Specifically, the common switch branch 104' includes a first end 106', a second end 107' and a conducting circuit 109', the first end 106' is floating, and the second end 107' passes through the conducting circuit 109'. The circuit 109' is connected to the second terminal 102'; the control element 103' is used to control the connection between the first terminal 101' and the first terminal 106' to control the lighting lamp 203' to be turned off ; The control element 103' is also used to control the connection between the first terminal 101' and the second terminal 107' to control the lighting lamp 203' to be turned on.

Further, the delay shutdown branch 105' includes a third terminal 108' and the delay circuit 110', and the third terminal 108' is connected to the second terminal 102' via the delay circuit 110' ; The control element 103' is used to control the connection between the first terminal 101' and the third terminal 108' to control the lighting lamp 203' to be turned off after delaying the predetermined time.

The control element 103' can be a multi-speed switch, such as a mechanical switch such as a multi-speed knob or a multi-speed button, but, in a modified embodiment, it can also be a wireless switch element such as a remote control. The multi-position switch is used to selectively connect the first terminal 101' to the first terminal 106', the second terminal 107', or the third terminal 108' under the operation of the user , so as to control the lighting lamp 203 ′ to be turned off, turned on, or delayed to turn off for the predetermined time, that is, to control the lighting switch 100 ′ to be in three states of off, on or delayed off.

It can be understood that, compared with the first embodiment, the second embodiment mainly controls the lighting switch 100 through the control element 103 ′ instead of the multi-speed switch 130 and the control circuit 140 in the first embodiment. ' in three states: off, on, or delayed off.

Please refer to FIG. 5 , which is a schematic diagram of a specific circuit structure of the lighting switch 100' shown in FIG. 4 . In this embodiment, the conducting circuit 109' includes a diode D5', a thyristor SCR' and a resistor R1', the anode of the diode D5' is connected to the second terminal 107', and the diode D5' The negative electrode of the one-way thyristor SCR' is connected to the anode of the one-way thyristor SCR', the cathode of the one-way thyristor SCR' is used to connect to the second terminal 102', and the resistor R1' is connected to the second terminal 102'. The terminal 107' and the gate electrode of the one-way thyristor SCR'.

The delay circuit 110' includes a capacitor C1', the resistor R1' and the one-way thyristor SCR', the anode of the one-way thyristor SCR' is also connected to the third terminal 108', the The capacitor C1' is connected between the second terminal 107' and the second terminal 102'. It can be understood that, in this embodiment, the conduction circuit 109' and the delay circuit 110' share the resistor R1' and the one-way thyristor SCR'. Wherein, when the resistance value of the resistor R1' or the capacitance value of the capacitor C1' is adjusted, the predetermined time delayed by the delay circuit 110' is different. Specifically, the predetermined time may be set according to actual needs, such as 10-60 seconds.

Further, in this embodiment, the first terminal 101' and the second terminal 102 are connected to the common switch branch 104' and the delay shutdown branch 105 through the rectifier circuit 111', The rectification circuit 111 ′ is used for the first terminal 101 ′ and the second terminal 102 ′ to be rectified and then provided to the common switch branch 104 ′ and the delay shutdown branch 105 ′. However, it can be understood that when the lighting switch 100 ′ is directly connected to the rectified voltage or the common switch branch 104 ′ and the delayed shutdown branch 105 ′ have other power supplies, the rectifier circuit 111 may not be provided. '.

Specifically, in this embodiment, the rectifier circuit 111 ′ includes a first input end 112 ′, a second input end 113 ′, a first output end 114 ′, and a second output end 115 ′. The first input end 112' is connected to the first terminal 101', the second input 113' is connected to the second terminal 102', the first output 114' is connected to the control element 103', and the second The output terminal 115' is grounded, and the second output terminal 115' is connected to the cathode of the one-way thyristor SCR' and the capacitor C1' to connect the second terminal 102' to the common switch branch 104 ' and the delay close branch 105' is connected. It can be understood that the rectifier circuit 111 may be a full-bridge rectifier circuit, including four silicon rectifier diodes D1'-D4' connected in sequence.

When the lighting switch 100 ′ shown in FIG. 2 is in operation, when the control element 103 ′ is connected to the first end 106 ′, the entire circuit is turned off, that is, the lighting lamp 203 ′ is in an off state, and the lighting switch 100 ' is closed. When the control element 103' is connected to the second terminal 107', the current passes through the resistor R1' to turn on the one-way thyristor SCR'; the current flows through the second terminal 107', the diode D5', The one-way thyristor SCR' forms a complete loop, while the current flowing through the second terminal 107' charges the capacitor C1'. When the control element 103' is connected to the third terminal 108', the accumulated charge on the capacitor C1' is discharged through the resistor R1', so that the one-way thyristor SCR' can be kept on, and the current flows through the The third end 108' continues to pass through the one-way thyristor SCR'; when the charge on the capacitor C1' is slowly released and is lower than the turn-on voltage of the one-way thyristor SCR', the one-way thyristor SCR' The thyristor SCR' is turned off, the delay circuit 110' completes the delay, and the lighting switch 100' is in an off state after a predetermined time delay.

Compared with the prior art, in the lighting switch 100' of the present invention, since the delay closing branch 105' is provided, the delay closing branch 105' is used to control the lighting lamp 203' after a predetermined time delay After turning off the lighting, the user can still obtain the lighting light within the predetermined time, which facilitates the user to move, and is less likely to be difficult to distinguish, collide or fall, and improves the safety and experience of the lighting switch.

Further, in the lighting switch 100', through the arrangement of the control element 103', the first end 106', the second end 107' and the third end 108', the lighting can be realized relatively simply and at low cost The control of the light 203 ′ on, off, and delayed off is to realize the three states of on, off and delayed off of the lighting switch 100 ′, so the lighting switch 100 ′ has high practicability.

Further, in the lighting switch 100', the diode D5', the one-way thyristor SCR' and the resistor R1' constitute the conducting circuit 109', and the capacitor C1', the resistor R1' and the The one-way thyristor SCR' constitutes a delay circuit 110', which can realize three states of normal on, off and delayed off in a relatively simple and low-cost manner, which also makes the lighting switch 100' more practical.

The above disclosures are only the preferred embodiments of the present invention, and certainly cannot limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims (13)

1. A light switch, characterized by: the lighting switch comprises a first terminal, a second terminal, a multi-gear switch, a control circuit, a delay closing branch and a common switch branch, wherein the first terminal and the second terminal are used for being electrically connected to the lighting circuit where a lighting lamp is located, the control circuit, the delay closing branch and the common switch branch are connected between the first terminal and the second terminal, the multi-gear switch is connected with the control circuit, the multi-gear switch is used for conducting the first terminal with the second terminal through the common switch branch or the delay closing branch through the control circuit under the operation of a user, and when the control circuit conducts the first terminal with the second terminal through the common switch branch, the common switch branch controls the lighting lamp to be normally switched on or switched off; when the control circuit conducts the first terminal with the second terminal through the delayed closing branch circuit, the delayed closing branch circuit controls the illuminating lamp to be closed after delaying for preset time, wherein the control circuit comprises a first end, a second end and a third end, the common switch branch comprises a conducting branch and a closing branch, when the multi-gear switch is communicated with the first end, the control circuit connects the first terminal with the second terminal through the delay closing branch circuit, when the multi-gear switch is communicated with the second end, the control circuit communicates the first terminal with the second terminal through the conducting branch circuit, when the multi-gear switch is communicated with the third end, the control circuit connects the first terminal with the second terminal through a closing branch in the common switch branch.

2. The light switch of claim 1, wherein: the switch-on branch comprises a first diode, a first resistor and a one-way controllable silicon, the control circuit comprises a first switch, the anode of the one-way controllable silicon is connected with the first wiring terminal, the cathode of the one-way controllable silicon is connected with the second wiring terminal, the anode of the first diode is connected with the first wiring terminal, the cathode of the first diode is connected with the control electrode of the one-way controllable silicon through two switch-on ends of the first switch, the first resistor is connected with the first terminal, the control end of the first switch is connected with the second terminal, and when the multi-gear switch is connected with the second terminal, the first switch is switched on.

3. The light switch of claim 2, wherein: the delay closing branch circuit comprises a first capacitor, a first resistor and the unidirectional silicon controlled rectifier, one end of the first capacitor is connected with one end, close to the first switch, of the first resistor, the other end of the first capacitor is connected with the second wiring end, and when the multi-gear switch is connected with the first end, the first switch is closed.

4. The light switch of claim 3, wherein: the control circuit further comprises a second switch, two conducting ends of the second switch are respectively connected with one end, adjacent to the first switch, of the first resistor and the second wiring end, a closing branch in the common switch branch comprises the one-way thyristor, the first resistor, the first capacitor and the second switch, a control end of the second switch is connected with the third end, and when the multi-gear switch is connected with the third end, the first switch is closed, and the second switch is conducted.

5. The light switch of claim 4, wherein: the control circuit further comprises a second resistor, a third resistor and a fourth resistor, the second resistor is connected to the second switch and one end, adjacent to the first switch, of the first resistor, the first end is connected to the control end of the first switch through the third resistor, and the control end of the first switch is grounded through the fourth resistor.

6. The light switch of claim 5, wherein: the control circuit further comprises a fifth resistor, a sixth resistor, a seventh resistor and a second diode, the third terminal is connected to the control terminal of the first switch through the fifth resistor, the anode of the second diode and the cathode of the second diode, the third terminal is further connected to the control terminal of the second switch through the sixth resistor, the seventh resistor is connected to the control terminal of the second switch and one end of the second switch far away from the first resistor, and the second switch is connected to one end of the first resistor close to the first switch through the second resistor.

7. The light switch of claim 4, wherein: the first switch is a PNP type bipolar transistor, and the second switch is an N type field effect transistor.

8. The light switch of claim 4, wherein: the lighting switch further comprises a rectifying circuit, the first terminal and the second terminal are connected with the multi-gear switch, the control circuit, the common switch branch and the delay closing branch through the rectifying circuit, and the rectifying circuit is used for rectifying external voltage connected with the first terminal and the second terminal and then supplying the rectified external voltage to the multi-gear switch, the control circuit, the common switch branch and the delay closing branch.

9. The light switch of claim 8, wherein: the lighting switch further comprises a voltage stabilizing circuit, the voltage stabilizing circuit is connected with the rectifying circuit, and the voltage stabilizing circuit is used for stabilizing the external voltage rectified by the rectifying circuit and providing the stabilized external voltage to the multi-gear switch, the control circuit, the common switch branch and the delayed closing branch.

10. The light switch of claim 9, wherein: the rectifier circuit comprises a first input end, a second input end, a first output end and a second output end, the first input end is connected with the first wiring end, the second input end is connected with the second wiring end, the first output end is connected with the anode of the one-way controllable silicon, the first output end is further connected with the anode of the first diode and the control end of the multi-gear switch through the voltage stabilizing circuit, the second output end is connected with the cathode of the one-way controllable silicon, and the second output end is simultaneously grounded.

11. The light switch of claim 10, wherein: the voltage stabilizing circuit comprises a third diode, an eighth resistor, a voltage stabilizing diode and a second capacitor, wherein the first output end is connected with the anode of the first diode and the control end of the multi-gear switch through the eighth resistor, the anode and the cathode of the third diode, the cathode of the third diode is grounded through the cathode and the anode of the voltage stabilizing diode, and the cathode of the third diode is grounded through the second capacitor.

12. A lighting switch comprises a first terminal, a second terminal, a control element, a common switch branch and a delay closing branch with a delay circuit, wherein the first terminal and the second terminal are used for being electrically connected to a lighting circuit where a lighting lamp is located; when the control element is connected to the delayed closing branch, the delayed closing branch is used for controlling the illuminating lamp to be closed after delaying for preset time, wherein the control element comprises a control circuit, the control circuit comprises a first end, a second end and a third end, the common switching branch comprises a conducting branch and a closing branch, when the first end is communicated, the control circuit enables the first terminal to be connected with the second terminal through the delayed closing branch, when the second end is communicated, the control circuit enables the first terminal to be communicated with the second terminal through the conducting branch, and when the third end is communicated, the control circuit enables the first terminal to be connected with the second terminal through the closing branch in the common switching branch.

13. The light switch of claim 12, wherein: the control element further comprises a multi-gear switch, the multi-gear switch comprises a control end and a connecting element, the control end of the multi-gear switch is connected with the first wiring end, and the connecting element is used for communicating the control end with the first end, the second end or the third end.

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