KR20030017591A - Auto lighting stand - Google Patents

Abstract

PURPOSE: An automatic lighting stand is provided to perform an automatic light mode by an alarm function, an automatic lighting mode by an illuminating sensing, and a lamp brightness control mode, and select the three modes according to an operation of a key switch. CONSTITUTION: An external power supply input section(100) receives an external power supply. A lamp(170) is lightened by an internal stand circuit. A touch sensor(150) sense a user's touch and generates touch information. An alarm controller(140) receives a set of an alarm time and generates alarm information. An illuminating sensor(160) senses an illuminance of a stand and generates sensing information. A switch(120) lightens the lamp(170). A controller(130) controls the switch(120) using information from the touch sensor(150), the alarm controller(140), and the illuminating sensor(160). A power supply(110) converts the external power supply received by the external power supply input section(100) according to a circuit characteristic of each part.

Description

Automatic lighting stands {AUTO LIGHTING STAND}

The present invention relates to a stand for lighting a lamp.

Stands that are currently used are not only a variety of types and functions, but also increasing the use of the stand, a stand that can detect the touch by the touch sensor to control the brightness of the lamp is being developed.

However, a stand having all of the three functions efficiently provided with the automatic lighting by the alarm function, the automatic lighting by the illumination detection, and the lamp brightness adjustment function by the touch sensor has not been developed yet.

That is, the functions have already been individually developed and widely used in various products, but a stand which can be conveniently used by users while accommodating all three functions has not been developed.

In addition, in the case of the stand is generally used in the dark night, so even in many cases it is necessary to turn on the stand in the dark, there is no conventional stand that there is no way to automatically turn on the stand by sound There is a problem.

That is, when the user wants to turn on the lamp in the dark night, there is no way to turn on the stand by a simple method such as the sound of the hand wall, and it is inconvenient to turn on the lamp only by finding the position of the stand and turning on the switch. .

The present invention is to solve the above-mentioned problems, and includes both automatic lighting by the alarm function, automatic lighting by the illumination detection and lamp brightness adjustment function by the touch sensor, and according to the operation of the key switch The purpose is to provide an auto-lit stand to allow three modes to be selected.

In addition, an object of the present invention is to provide an auto-lighting stand capable of performing an auto-lighting function by sound detection in addition to the auto-lighting by illumination detection and a lamp brightness adjustment function by manual operation.

1 is an external configuration of a first embodiment of the auto-lighting stand according to the present invention.

2 is a circuit diagram illustrating a first embodiment of an auto-lighting stand according to the present invention.

3A is a detailed circuit diagram of an external power input unit and a power supply unit according to the present invention.

Figure 3b is a detailed circuit diagram of an embodiment of the lamp unit and the switching unit applied to the present invention.

Figure 3c is a detailed circuit diagram of an embodiment of an alarm control unit applied to the present invention.

Figure 3d is a detailed circuit diagram of one embodiment of the touch sensor unit 150 applied to the present invention.

The present invention for achieving the above object, in the automatic lighting stand, the external power input unit 100 for receiving the external power; A lamp unit 170 which is turned on by the stand internal circuit; A touch sensor unit 150 for detecting touch by a user using a touch sensor and then generating touch information; An alarm controller 140 for receiving alarm setting and generating alarm information; An illumination detection sensor unit 160 configured as an illumination detection sensor (CDS) to detect illumination around the stand and generate detection information; A switching unit 120 for illuminating the brightness of the lamp mounted on the lamp unit in predetermined steps according to the touch information input from the touch sensing sensor unit; A controller 130 for lighting the lamp of the lamp unit by controlling the switching unit by using information transmitted from the touch sensor unit, an alarm controller, and an illuminance sensor unit; And a power supply unit 110 for converting and transmitting external power inputted through the external power input unit to match the circuit characteristics of the respective units.

In addition, the present invention includes a lamp unit 270 consisting of a lamp lighting output switching triac (TRIAC) and the lamp is switched on and switched by the triac (TRIAC); A power supply unit 250 for driving each circuit in the stand while receiving an external power and lighting the lamp; An illumination sensor unit 210 for sensing the illumination around the stand to light the lamp; Noise detection unit 220 for detecting the noise around the stand to turn on the lamp; A manual dimmer 280 for manually adjusting the illuminance of the lamp; A switching unit 240 for switching the operation of the lamp by the illuminance sensor or the noise detector; A delay unit 230 for adjusting a lighting time of the lamp when the lamp is automatically turned on by the illuminance detecting unit 210 or the noise detecting unit 220; And the light dimming unit 280 through the optical coupler for the triac drive of the lamp unit 270, so that any one mode of the illuminance sensor 210 or the noise detector is If it is selected, it includes a switch for driving the triac (TRIAC) to automatically turn on the lamp, while driving the manual light control unit 280, when the switch is driven by the manual light control unit 280 And a control unit 260 for turning on the lamp.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an external configuration diagram of a first embodiment of the auto-lighting stand according to the present invention.

As shown in the figure, the auto-lighting stand according to the present invention, in addition to the lamp 11 for generating light, the illumination detection sensor 10 for automatically lighting the lamp when it detects external illumination and becomes dark or bright. ), A touch sensor 13 for lighting a lamp by detecting a user's touch, and an input / output device 14 for inputting an alarm time and displaying various input information for lamp lighting by an alarm function, instead of a simple ON / OFF switch. ), Including a mode selection switch 12 for switching the stand to each of the modes described below, and a red LED 15 and a green LED 16 that can indicate the CDS mode and the alarm mode described below. Consists of. At this time, the external configuration of the stand by the above configuration can be configured in various forms.

On the other hand, the illuminance sensor 10 detects the illuminance around the stand according to the present invention to turn on the lamp 11 when it is darker than a certain level, and turns off the lamp 11 when it is brighter than a certain level. Let's do it.

In addition, the touch sensor 13 may adjust the brightness of the lamp 11 by dividing the touch operation by the user into three to four steps. That is, the lamp 11 is turned on by sensing the first touch, and the lamp brightness is adjusted to the lowest state. Next time, when the user touches the touch again, the brightness of the lamp 11 is adjusted to a higher level. In the same manner, the brightness of the lamp 11 may be divided into three to four stages.

In addition, the input / output device 14 is a switch for setting the ON / OFF time of the lamp in advance so that the lamp 10 is automatically turned ON / OFF when the corresponding time is reached. It has a display composed of LED or LCD for output.

FIG. 2 is a diagram illustrating the internal circuit of the stand shown in FIG. 1 as an internal circuit diagram of the first embodiment of the auto-lighting stand according to the present invention. 3A is a detailed circuit diagram of an external power input unit 100 and a power supply unit 110 applied to the present invention, and FIG. 3B is a view of the lamp unit 170 and the switching unit 120 applied to the present invention. One embodiment is a detailed circuit diagram. In addition, Figure 3c is a detailed circuit diagram of an embodiment of the alarm control unit 140 applied to the present invention, Figure 3d is a detailed circuit diagram of an embodiment of the touch sensor unit 150 is applied to the present invention.

As shown in the drawing, the stand according to the present invention stands for the external power input unit 100 for receiving external power, the lamp unit 170 that is turned on by the internal circuit of the stand, and the external power input through the external power input unit. The power supply unit 110 for turning on the lamp, the switching unit 120 for turning on the brightness of the lamp mounted on the lamp unit in three to four stages, and converting them to match each circuit characteristic therein. Touch detection sensor unit 150 for generating touch information after detecting the touch by using the touch sensor, alarm control unit 140 for generating alarm information by receiving the setting of the alarm time, illuminance around the stand In order to detect and generate detection information, the degree of transmission from the illumination detection sensor unit 160 including the illumination detection sensor (CDS) and the touch detection sensor unit, the alarm control unit, and the detection sensor unit. By the use of the switching control part it is configured to include a control unit 130 for driving the lamp.

First, the power supply unit 110 is a circuit diagram for converting an AC 220V supplied to a home power into a DC 5V power source for driving a lamp, and displays an AC 220V input and a DC 5V supplied to a circuit. Shown in 3a. That is, as shown in the figure, AC 220V supplied from the outside is half-wave rectified by the diode D3 to charge the capacitor C1, and the charged voltage is sent to the diode D1. At this time, the voltage input through D1 is converted into a DC 5V constant voltage by a 5V zener diode and supplied to each circuit inside the lamp.

Next, the switching unit 120 is a triac control circuit for controlling the AC power supplied to the lamp in three stages, and is illustrated in FIG. 3B. That is, the triac phase control is used to convert the average voltage supplied to the lamp in three stages, thereby adjusting the brightness of the lamp in three stages.

That is, when the control unit 130 transmits a control signal to the switching unit 120 based on the touch information input to the touch detection sensor of the touch detection sensor unit 150, the switching unit generates a voltage supplied to the lamp according to the control signal. This adjusts the brightness of the lamp. Table 1 below shows the steps of adjusting the voltage and the brightness supplied to the lamp in accordance with the control signal in the touch mode to be described below.

That is, in the first stage, the triac's gate current is 4.6 mA (= 220 V / 47,000). The lamp (light) is off because this value is less than or equal to the triac gate turn on current. However, in the second to fourth stages, the triac gate currents are 8.1 mA, 9.96 mA, and 738 mA, respectively, and the brightness of the lamp (light) is adjusted accordingly.

[Table 1] shows the lamp brightness control table in the touch mode, and in the CDS mode and the alarm mode, which will be described below, two steps are respectively provided by control signals input from two ports RB5 and RB4. That is, it is divided into two stages, ON or OFF.

Next, the alarm controller 140 uses the DS1302 clock supply circuit as shown in FIG. 3C as a circuit for supplying the time for turning the lamp ON or OFF to the CPU (PIC 16F84) of the controller. To this end, the current time is initially set in the DS1302, while a desired time is input from the user and stored in the controller 130. The controller 130 reads the current time from the DS1320 every second to the ports RA1, RA2, and RA3. Turns on the light when within the set time range and turns off the lamp when out of range.

In this case, the alarm time is received from the user through an alarm time input device connected to the alarm controller 140 or the controller 130, and the input alarm time is stored in the controller 130. Meanwhile, as described above, the controller 130 compares the stored alarm time with the time transmitted from the alarm controller 140 to control the switching unit 120 to turn on / off the lamp.

Next, the touch sensing sensor unit 150 is illustrated in FIG. 3D as a circuit for detecting a signal input from a touch sensor and transmitting the signal to the controller 130. That is, when a signal is generated from the touch sensor, the NE555 transmits one monostable pulse signal to the controller 130 through the port RB2. At this time, the touch signal is lit 30% when touched once, 70% lighted once again, 100% lighted once again, and turned off when touched again. Therefore, it is a circuit that supplies a four-step lighting signal.

On the other hand, the key switch (KEY SW) of the touch sensor unit 150 is a switch used for setting the mode, it is set to the touch mode in the initial state. In the initial state, pressing the key switch once switches to the CDS mode, and pressing once again switches to the alarm mode. In other words, the key switch functions to alternately set the three modes. The function of this key switch can be implemented by the mode selection switch 12 shown in FIG.

In addition, the LED may be turned on to display the mode of the key switch to the user. That is, in the touch mode, all LEDs are turned off. In the CDS mode, the red LED 15 is turned on. In the alarm mode, the green LED is turned on. This allows you to tell the user the current mode.

Next, the illuminance detection sensor unit 160 transmits the detected illuminance information to the CPU (PIC 16F84) of the controller 130 by detecting the illuminance around the stand by the illuminance sensor (CDS) 10.

Next, the controller 130 receives the information from the touch sensor 150, the alarm controller 140, and the illuminance sensor 160 to control the switching unit 120 to turn on the lamp. do.

Figure 4 is a flow chart of an embodiment of an operation method of the auto-lighting stand applied to the present invention.

First, when the power cord is connected, the controller 130 initializes the mode of the stand according to the present invention to the touch mode to the touch sensor 151 or the key switch 152 provided in the touch detection sensor unit 150. Wait for input (S302).

When there is no input of the key switch in the standby state (304) and the input of the touch sensor (306), the lamp unit 170 is controlled by controlling the switching unit 120 by the steps as shown in [Table 1]. (308). That is, when one input is sensed by the touch sensor in the state of initializing in the touch mode, the lamp 170 is driven by setting the voltage supply of the switching unit 120 to about 30% to maximize the brightness of the lamp 170. Maintain about 30% of brightness. In this state, when two or three touches are detected, the brightness of the lamp 170 is adjusted step by step (308). At this time, when the fourth touch is detected, the lamp is turned off, and the touch mode is initialized again.

On the other hand, if the input of the key switch is detected (310) or the input of the key switch in the state 302 is initialized to the touch mode (302) while repeating the above process (304), the controller 130 The stand mode is switched to the CDS mode (312).

That is, when the user presses the key switch once in the touch mode (304 and 310), the controller 130 switches the stand according to the present invention to the CDS mode (312) and turns on the red LED of the LED display window. (314). In this case, the CDS mode is a mode for turning on the lamp by the illuminance detection sensor of the illuminance detection sensor unit 160.

In the CDS mode, the illumination sensor CDS detects the illumination around the lamp and transmits the information to the controller 130 when the illumination is constant, and the controller 130 receiving the information transmits the switching unit 120. The lamp 170 is turned on or off by driving. That is, the microchip PIC16F84 of the controller 130 has a built-in illuminance value (LUX) necessary to turn on or off, and receives data related to illuminance from the sensor (CDS0) of the illuminance detecting sensor unit 160. The value is calculated and compared with the stored illuminance value, and the lamp is turned on or off when the preset illuminance value is met.

On the other hand, to notify the user of the CDS mode state as described above, the controller 130 is turned on the red LED of the LED display window.

Next, when the user double-clicks the touch switch in the standby state or when the user clicks the touch switch once more in the CDS state, the controller 130 switches the lamp according to the present invention to the alarm mode. The green LED of the display window is turned on (306). In this case, the CDS mode is a mode for turning on the lamp by the illumination detection sensor of the illumination detection sensor unit 160.

That is, when the user presses the touch switch once, the lamp according to the present invention switches to the CDS mode, and the illumination sensor CDS senses the illumination around the lamp to control the information when the illumination is below a certain illumination. 130, the controller 130 receiving the information drives the switching unit 120 to light the lamp of the lamp unit 170.

On the other hand, to notify the user of the CDS mode state as described above, the controller 130 is turned on the red LED of the LED display window.

5 is an external configuration of a second embodiment of the auto-lighting stand according to the present invention.

As shown in the figure, the auto-lit stand according to the present invention, in addition to the lamp 21 for generating light, detects illuminance to detect the illuminance of the outside and automatically turns on the lamp when it becomes dark or bright. Sensor 20, a microphone 24 for sensing the external noise to automatically light the lamp according to the noise level, brightness control switch 22 for adjusting the illumination of the lamp manually and illumination detection And a mode selection switch 23 for allowing a user to select any one of the automatic lighting mode by the light, the automatic lighting mode by the noise detection, and the lamp illuminance adjustment mode by the manual. At this time, the external configuration of the stand by the above configuration can be configured in various forms.

FIG. 6 is a circuit diagram illustrating the internal circuit of the stand shown in FIG.

That is, the automatic lighting stand according to the present invention as shown in the drawings, the lamp unit 270 including a lamp that is lit by the internal circuit of the stand, and receives the external power to drive each circuit inside the stand while the lamp The power supply unit 250 for lighting the lamp, the illumination sensor 210 to detect the illumination around the stand to turn on the lamp, the noise detection unit 220 to detect the noise around the stand to turn on the lamp, lighting A delay unit 230 for delaying time, a switching unit 240 for switching the operation of the lamp unit by the illuminance sensor unit or the noise detection unit, a manual dimmer unit 280 for manually adjusting the brightness of the lamp, and And a control unit 260 for controlling the movement information between the units.

First, the illuminance detecting unit 210 detects illuminance around the stand using the illuminance detecting sensor 20 to automatically light the lamp of the lamp unit 270. For this purpose, as shown in FIG. 6, an amplifier for driving a timer by sensing ambient illumination and when illumination is low, generates an “H” output to operate IC4 of the delay unit 230 and delay unit 260. IC1 for determining the need for automatic lighting of the lamp by identifying the brightness of the surroundings by allowing the PC1 to operate, a semi-fixed resistor (VR1) for sensitivity calibration for illuminance, and a resistor for setting the comparative voltage of IC1 (R1, R2) And a resistor (R3) for preventing the hunting phenomenon when the lamp is turned on as a positive feedback resistor for the Schmitt operation, and a capacitor (C1) for performing the function of the output coupling capacitor (for removing the DC portion) of the IC1.

Next, the noise detector 220 detects the noise around the stand to automatically turn on the lamp of the lamp unit 270, and supplies the operation power of the MIC (ECM) 24 and the MIC for noise reception. And a capacitor for performing functions of a semi-fixed resistor (VR2) for sensitivity adjustment, an amplifier (IC2) for amplifying noise, a resistor (R4), a capacitor (C3), and an output coupled capacitor of the amplifier (IC) for constituting the band pass filter of the amplifier ( C2).

Next, the delay unit 230 is for counting the basic clock oscillation for the delay time and the clock required for the oscillation, for performing the functions of the basic clock oscillator (IC3), the basic clock oscillation time constant for the delay time Resistors R5, R6, capacitor C4, and a diode for stopping oscillation, and diode D1 for stopping oscillation when the operating point of S2 is "H". This is a ripple counter that counts the clock and is reset through the output of IC1 or IC2 and output through Q5 or Q14. This output is output as “H”, so the SET (“L”) of IC4 and IC4 can be stopped. And a reverse voltage prevention diode D2 for the discharge of the working resistor R7, C1 or C2 and the protection of IC4.

Next, the switching unit 240 is a function selection unit for selecting the operation by the illuminance sensor 210 or the operation by the noise detection unit 220 is composed of a switch S1 and a switch S2, the switch ( S1 and S2 interoperate with each other. That is, when the switches S1 and S2 are connected to P1, when the light becomes dark after sunset, the auto lighting function is performed for a predetermined time (that is, the operation by the illuminance sensor 10), and when it is connected to P2. In the dark after sunset performs a function that automatically turns on for a predetermined time due to the ambient noise (that is, the operation by the noise detector 20). This function is performed by the mode selection switch 23 shown in the stand exterior of FIG.

Next, the control unit 60 controls the lamp unit 70 according to the auto-lighting function by the illuminance or noise selected by the switching unit 40 to turn on the lamp, and also to the illuminance or the noise. In addition to the lighting function, the switch includes a switch capable of selecting an operation of the manual dimmer 280 that controls the illuminance of the lamp in accordance with manual operation. That is, the transistors TR1 and TR2 and PC1 are used to control the TRIAC of the lamp unit 270 to perform the auto-lighting function of the lamp by illuminance or noise, and the switch S3 for manual brightness adjustment of the lamp. It is included.

At this time, the transistor TR1 is a TR for PC1 drive current switching, and is turned ON only when the output of the IC1 is “H”, that is, in a dark place with low illumination. In addition, the transistor TR2 is a function for turning off the PC1, that is, turning off the TR1. Make TR1 ON only when Q5 or Q14 of IC4 is "L". In addition, the control unit 260 includes coupling resistors R8 and R9, TR1 current limiting resistor R10, and triac type optical coupler PC1 for triac drive.

That is, the controller 260 is connected to the manual dimming unit 280 through the triac (TRIAC) drive optical coupler of the lamp unit 270, so that the illuminance sensor 210 or the noise detector If any one of the modes is selected to drive the triac (TRIAC) to automatically turn on the lamp, while the manual dimmer 280 includes a switch for driving the manual adjustment when the switch is driven The lamp 280 may be turned on by the miner 280.

Next, the manual dimmer 280 performs a function of manually adjusting the illuminance of the lamp. That is, the DIAC, VR3, and C5 use the VR3 as the TRIAC firing circuit of the lamp unit 270 to delay the charge / discharge time of C5, that is, delay the firing phase so that the light is dimmed. In addition, the resistors R12 and R13 and the diodes D3 to D6 constitute a hysteresis prevention circuit of the dimming circuit. On the other hand, the switch (S3) of the control unit 60 is a switch in conjunction with the manual brightness control resistor (VR3) when the switch to the VR3 is turned off automatically by the illuminance sensor 210 and the noise detector 220 when turned off In the case of manual dimming with VR3, the automatic lighting function is stopped and the brightness is adjusted by the VR3 adjustment by the user. At this time, the adjustment of VR3 is performed using the brightness control switch 22 shown in the stand external configuration of FIG.

Next, the power supply unit 250 is for supplying power to each part of the circuit, as shown in the drawing, an AC current rectifying diode (D7 ~ D10), a current control capacitor (C6), inrush current limiting resistor (R14), the smoothing resistor C7, and the constant voltage diode Z1 are comprised.

Next, the lamp unit 270 receives power from the power supply unit 250, and performs a function of driving the lamp by the control unit 260 and the manual dimmer 280, and at this time, the lamp lighting output switching The lamp is switched on by switching by TRIAC.

That is, in the above configuration, when the user sets the automatic lighting function of the lamp by the illuminance sensor 210 or the noise detector 220 using the switch S1 or S2 of the switching unit 240, the detection is performed. The control unit drives the lamp unit to light the lamp according to the received illuminance information or the noise information. When the user selects the switch S3 of the control unit 240, the manual dimming unit 280 is operated to control the brightness of the lamp by manual operation. To adjust.

The present invention is not limited to the embodiments described above, and various modifications and changes can be made by those skilled in the art, which are included in the spirit and scope of the present invention as defined in the appended claims.

The present invention includes all of the automatic lighting by the alarm function, automatic lighting by the illumination detection and lamp brightness adjustment function by the touch sensor, and the user can conveniently select the three modes according to the operation of the key switch. There is an excellent effect of making the stand available.

In addition, an object of the present invention is to provide an auto-lighting stand capable of performing the auto-lighting function by sound detection in addition to the auto-lighting by illumination detection and the lamp brightness adjustment function by manual operation.

Claims (5)

In the auto lighting stand, An external power input unit 100 for receiving an external power; A lamp unit 170 which is turned on by the stand internal circuit; A touch sensor unit 150 for detecting touch by a user using a touch sensor and then generating touch information; An alarm controller 140 for receiving alarm setting and generating alarm information; An illumination detection sensor unit 160 configured as an illumination detection sensor (CDS) to detect illumination around the stand and generate detection information; A switching unit 120 for illuminating the brightness of the lamp mounted on the lamp unit in predetermined steps according to the touch information input from the touch sensing sensor unit; A controller 130 for lighting the lamp of the lamp unit by controlling the switching unit by using information transmitted from the touch sensor unit, an alarm controller, and an illuminance sensor unit; And To convert and transmit the external power input through the external power input unit to match the circuit characteristics of each of the power supply unit 110 Automatic lighting stand that includes. The method of claim 1, The touch sensor unit 150, A touch sensor for sensing the number of touches by the user; And Key switch for selecting the stand driving mode by any one of the alarm control unit 140, the illuminance sensor 160, the touch sensor 150 to transmit the corresponding information to the control unit 130 It contains, The control unit 130 receives the touch count information of the user sensed by the touch sensor and controls the switching unit 120 according to the touch count information, so that the switching unit 120 generates the touch count according to the number of touches. Automatic lighting stand characterized in that to adjust the brightness of the lamp of the lamp unit (100). The method according to claim 1 or 2, The control unit 130, While receiving the mode information selected by the key switch of the touch sensor unit 150 to drive at least one of the alarm controller 140, illuminance sensor 160, touch sensor 150, The auto lighting stand, characterized in that for driving the switching unit 120 to light the lamp of the lamp unit 170 in accordance with the information transmitted from the driven device. In the auto lighting stand, A lamp unit 270 including a lamp lighting output switching triac TRAC and a lamp switched on by the triac TRAC; A power supply unit 250 for driving each circuit in the stand while receiving an external power and lighting the lamp; An illumination sensor unit 210 for sensing the illumination around the stand to light the lamp; Noise detection unit 220 for detecting the noise around the stand to turn on the lamp; A manual dimmer 280 for manually adjusting the illuminance of the lamp; A switching unit 240 for switching the operation of the lamp by the illuminance sensor or the noise detector; A delay unit 230 for adjusting a lighting time of the lamp when the lamp is automatically turned on by the illuminance detecting unit 210 or the noise detecting unit 220; And The lamp unit 270 is connected to the manual dimming unit 280 through an optical coupler for a triac drive, so that any one mode of the illuminance detecting unit 210 or the noise detecting unit is selected. In the case of driving the triac (TRIAC) to automatically turn on the lamp, and the switch to drive the manual light control unit 280, when the switch is driven by the manual light control unit 280 Control unit 260 for turning on the lamp Automatic lighting stand that includes. The method of claim 4, wherein The manual dimmer 280, Resistors (R12, R13) and diodes (D3-D6) for preventing hysteresis of the light control circuit, and DIAC, VR3, C5 for performing a function as a TRIAC firing circuit of the lamp unit 270, Is connected to the control unit 260 through an optical coupler, when the manual light control unit driving switch (S3) provided in the control unit 230 is selected, the illumination intensity sensor unit 210 and the noise detection unit 220 The auto lighting stand is stopped and the lamp is turned on by the manual brightness adjustment function by the VR3.