CN212276764U

CN212276764U - Self-starting sign

Info

Publication number: CN212276764U
Application number: CN202021244031.9U
Authority: CN
Inventors: 罗华明
Original assignee: Zhongshan Kailei Deyi Lighting Technology Co ltd
Current assignee: Kaileide Guangdong Technology Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-01-01
Anticipated expiration: 2030-06-29

Abstract

The utility model discloses a self-starting indication board, which comprises a shell, wherein an indication lamp is arranged on the surface of the shell; a self-starting circuit is arranged in the shell and comprises a direct-current power supply, a photoresistor, a divider resistor, a power supply and a switch circuit; the photoresistor is exposed out of the surface of the shell to sense the illumination intensity; DC power supply, photo resistance, divider resistance and earthing terminal are connected in order electrically, switch circuit includes on-off control end and two links, the on-off control end is in the one end that photo resistance and divider resistance link to each other, and two links link to each other with power and pilot lamp respectively, switch circuit controls the power according to the control signal control power of on-off control end and exports power or stops the output electric energy to the pilot lamp. The utility model discloses a sign can be opened by oneself according to illumination intensity, and it is more convenient to use.

Description

Self-starting sign

Technical Field

The utility model belongs to the technical field of the sign technique and specifically relates to a self-starting sign.

Background

The sign is a kind of identification means for guiding the road, and along with the development of science and technology, the sign has evolved gradually from traditional hand-written signboard to light display board. In the prior art, part of the indication boards are only used for lighting at night, and the indication boards do not need to work in the daytime. The current mode of operation is, comes temporarily night, and the light sign can be opened manually by the trade company to close the light sign daytime, this kind of sign is intelligent inadequately, leads to using inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model provides a self-starting sign can open by oneself according to illumination intensity, and it is more convenient to use.

The embodiment of the utility model provides a self-starting indication board, which comprises a shell, wherein an indication lamp is arranged on the surface of the shell; a self-starting circuit is arranged in the shell and comprises a direct-current power supply, a photoresistor, a divider resistor, a power supply and a switch circuit; the photoresistor is exposed out of the surface of the shell to sense the illumination intensity; DC power supply, photo resistance, divider resistance and earthing terminal are connected in order electrically, switch circuit includes on-off control end and two links, the on-off control end is in the one end that photo resistance and divider resistance link to each other, and two links link to each other with power and pilot lamp respectively, switch circuit controls the power according to the control signal control power of on-off control end and exports power or stops the output electric energy to the pilot lamp.

Preferably, the switch circuit comprises a first input resistor, a current-limiting resistor, a triode and an output end; one end of the first input resistor is connected with one end of the photosensitive resistor connected with the divider resistor, the other end of the first input resistor is electrically connected with the base electrode of the triode, the power supply, the current-limiting resistor and the collector electrode of the triode are electrically connected in sequence, and the emitter electrode of the triode is grounded; the output end is electrically connected with the collector of the triode, and the output end is used for being electrically connected with the indicator light.

Preferably, the switch circuit further comprises an MOS transistor, a second input resistor and an enable control terminal, wherein a drain electrode of the MOS transistor is electrically connected with a collector electrode of the triode, the enable control terminal, the second input resistor and a gate electrode of the MOS transistor are electrically connected in sequence, and a source electrode of the MOS transistor is electrically connected with the output terminal.

Preferably, the output end is provided with a filter circuit, and the filter circuit is an LC filter circuit.

Preferably, the switch control end is provided with a protection circuit, and the protection circuit is a transient diode.

Preferably, the photoresistor is arranged on the surface of the shell, and a transparent cover body covers the photoresistor.

Preferably, a control switch is electrically connected between the direct current power supply and the photoresistor, and the control switch is arranged on the surface of the shell.

The utility model has the advantages that: the utility model discloses an external illumination intensity of photosensitive resistance response, when being in the period at night, illumination intensity is low, and photosensitive resistance's resistance diminishes, and DC power supply exports high level signal to switch circuit, and switch circuit control power is to pilot lamp output, pilot lamp work. When being in daytime, illumination intensity is high, and the resistance grow of photo resistance, and DC power supply outputs low level signal to switch circuit, and switch circuit control power does not to pilot lamp output power, and the pilot lamp is out of work. Like this, the sign can open by oneself at night according to illumination intensity, and it is more convenient to use.

Drawings

Fig. 1 is a schematic structural view of a self-starting sign according to an embodiment of the present invention;

fig. 2 is a schematic circuit structure diagram of a self-starting sign according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a self-starting circuit according to an embodiment of the present invention.

Wherein the reference numerals are: the device comprises an indicator lamp 11, a control switch 12, a cover body 13, a direct current power supply 21, a photoresistor 22, a voltage dividing resistor 23, a power supply 31 and a switch circuit 32.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment of the utility model provides a sign of adjustable luminance, as shown in fig. 1-3, it includes the casing, and housing face is provided with pilot lamp 11, and pilot lamp 11 can include a plurality of LED lamps, and its constitution is predetermined instruction pattern or characters, as shown in the picture, arrow point pattern is constituteed to pilot lamp 11 to the direction of indication. The back of the shell can be provided with hanging holes, so that the shell can be hung on a wall body.

A self-starting circuit is arranged in the shell and comprises a direct current power supply 21, a photoresistor 22, a voltage dividing resistor 23, a power supply 31 and a switch circuit 32. The power supply 31 is used to output a power signal, which may be a battery. The dc power supply 21 supplies a dc voltage for supplying a start signal to the switch circuit after voltage division, which may be a power supply device independent from the power supply 31, or a power supply device formed by transforming the voltage of the power supply 31, for example, a voltage transformation circuit is connected to the output terminal of the battery, and the voltage required by the dc power supply 21 can be output after transformation. The dc power supply 21, the voltage dividing resistor 23, the power supply 31, and the switching circuit 32 may be integrated inside the housing. The photo-resistor 22 is exposed out of the surface of the housing, so as to sense the illumination intensity, and when the illumination intensity changes, the resistance of the photo-resistor 22 also changes.

The direct current power supply 21, the photoresistor 22, the divider resistor 23 and the grounding end are electrically connected in sequence, the switch circuit 32 comprises a switch control end and two connecting ends, the switch control end is connected with a circuit between the photoresistor 22 and the divider resistor 23, and the two connecting ends are respectively connected with the power supply 31 and the indicator lamp 11. Therefore, a voltage division circuit is formed, when the resistance of the photoresistor 22 changes, the voltage output to the switch control end also changes, when the voltage of the switch control end is higher than the preset voltage, the circuit between the two connection ends is conducted, the power supply 31 outputs power to the indicator lamp 11, and the indicator lamp 11 works. When the voltage of the switch control terminal is lower than the predetermined voltage, the power supply 31 stops outputting the power to the indicator lamp 11, so that the indicator lamp 11 does not operate.

As shown in fig. 3, the switch circuit 32 includes a first input resistor R2, a current limiting resistor R3, a transistor Q1, and an output terminal. The resistor Rs is the photo-resistor 22, and the resistor R1 is the divider resistor 23. One end of the first input resistor R2 is connected with a circuit between the resistor Rs and the resistor R1, the other end of the first input resistor R2 is electrically connected with the base electrode of the triode Q1, the power supply, the current-limiting resistor R3 and the collector electrode of the triode are electrically connected in sequence, and the emitter electrode of the triode is grounded. One end of the output end is electrically connected with the collector of the triode, and the other end is electrically connected with the indicator light 11. The divided power signal is input to the base electrode of the triode through the resistor R2, when the input voltage reaches the conduction voltage (generally about 0.7 v) of the triode, the collector electrode and the emitter electrode of the triode are conducted, the output end is in short circuit, and the power signal is not output, so that the switch control function is realized.

Further, the switch circuit 32 further includes a MOS transistor Q2, a second input resistor R4, and an enable control terminal, a drain of the MOS transistor is electrically connected to a collector of the transistor, the enable control terminal, the second input resistor R4, and a gate of the MOS transistor are electrically connected in sequence, and a source of the MOS transistor is electrically connected to the output terminal. The MOS tube also plays a switching role as a switching tube, namely a switching device is additionally arranged between the output end and the collector electrode of the triode, and the switching device is controlled to be switched on or switched off through the enabling control end, so that the effect of controlling whether the output end outputs a power supply signal or not can be realized even if the triode is switched on. The MOS transistor may be a P-channel MOS transistor, the enable control terminal is idle, a low level is input, and a source and a drain of the MOS transistor are turned on, thereby outputting a power signal to the indicator light 11. When an open circuit between the output terminal and the collector of the triode is required, the enable control terminal can be connected with the direct current power supply 21.

In one embodiment, the output terminal is provided with a filter circuit, which is an LC filter circuit, as shown in fig. 3, and the capacitors C1, C2 and the inductor L1 form the filter circuit, so that the output terminal outputs a clean power signal.

In an embodiment, the switch control terminal is provided with a protection circuit, as shown in fig. 3, the protection circuit is a transient diode TVS, and the transient diode TVS can absorb a transient peak signal to protect the circuit.

In an embodiment, a control switch 12 is further electrically connected between the dc power supply 21 and the photo-resistor 22, the control switch 12 is disposed on the surface of the housing, and by operating the control switch 12, whether the dc power supply 21 outputs a power signal to the photo-resistor 22 can be controlled, which is equivalent to a switch of the whole circuit, so that a user can turn off the control switch 12 when the sign is not needed.

In one embodiment, the photo-resistor 22 may be disposed on a side wall of the housing, and the photo-resistor is covered with the transparent cover 13 to prevent the photo-resistor 22 from being directly exposed to the external environment, thereby providing protection for the photo-resistor 22.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these descriptions. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement.

Claims

1. A self-starting sign, its characterized in that: the device comprises a shell, wherein an indicator lamp is arranged on the surface of the shell; a self-starting circuit is arranged in the shell and comprises a direct-current power supply, a photoresistor, a divider resistor, a power supply and a switch circuit; the photoresistor is exposed out of the surface of the shell to sense the illumination intensity; DC power supply, photo resistance, divider resistance and earthing terminal are connected in order electrically, switch circuit includes on-off control end and two links, the on-off control end is in the one end that photo resistance and divider resistance link to each other, and two links link to each other with power and pilot lamp respectively, switch circuit controls the power according to the control signal control power of on-off control end and exports power or stops the output electric energy to the pilot lamp.

2. A self-actuating sign according to claim 1, wherein: the switching circuit comprises a first input resistor, a current-limiting resistor, a triode and an output end; one end of the first input resistor is connected with one end of the photosensitive resistor connected with the divider resistor, the other end of the first input resistor is electrically connected with the base electrode of the triode, the power supply, the current-limiting resistor and the collector electrode of the triode are electrically connected in sequence, and the emitter electrode of the triode is grounded; the output end is electrically connected with the collector of the triode, and the output end is used for being electrically connected with the indicator light.

3. A self-actuating sign according to claim 2, wherein: the switching circuit further comprises an MOS tube, a second input resistor and an enabling control end, the drain electrode of the MOS tube is electrically connected with the collector electrode of the triode, the enabling control end, the second input resistor and the grid electrode of the MOS tube are electrically connected in sequence, and the source electrode of the MOS tube is electrically connected with the output end.

4. A self-actuating sign according to claim 2 or 3, wherein: the output end is provided with a filter circuit which is an LC filter circuit.

5. A self-actuating sign according to any of claims 1-3, wherein: the switch control end is provided with a protection circuit which is a transient diode.

6. A self-actuating sign according to any of claims 1-3, wherein: the photosensitive resistor is arranged on the surface of the shell, and a transparent cover body covers the photosensitive resistor.

7. A self-actuating sign according to any of claims 1-3, wherein: and a control switch is electrically connected between the direct current power supply and the photoresistor and arranged on the surface of the shell.