CN209000511U - The brightness regulating circuit and LED variable information display device of LED changeable-message sign - Google Patents
The brightness regulating circuit and LED variable information display device of LED changeable-message sign Download PDFInfo
- Publication number
- CN209000511U CN209000511U CN201822132602.9U CN201822132602U CN209000511U CN 209000511 U CN209000511 U CN 209000511U CN 201822132602 U CN201822132602 U CN 201822132602U CN 209000511 U CN209000511 U CN 209000511U
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- Prior art keywords
- resistance
- led
- regulating circuit
- brightness regulating
- message sign
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Abstract
The utility model is the brightness regulating circuit and LED variable information display device about LED changeable-message sign, is related to the circuit system field field of light-emitting diode display.The brightness regulating circuit includes: that one end of resistance R4 is connected with one end of resistance R1, the end another termination GND of resistance R4；The both ends resistance R4 that concatenated resistance R2 and capacitor C1 are connected in parallel on；The both ends resistance R4 that switch S1, resistance R3 and the slide rheostat R5 of connection are connected in parallel on；The both ends capacitor C1 that photosensitive sensor J1 is connected in parallel on；The resistance R1 other end be pressure feedback port.The LED variable information display device, including show ontology and above-mentioned brightness regulating circuit.The utility model realizes that the acquisition reuse circuit resistance value of light goes to dim by photosensitive sensor, and dimming mode is flexible, at low cost, high-efficient.
Description
Technical field
The utility model relates to the bright of the circuit system field of light-emitting diode display more particularly to a kind of LED changeable-message sign
Degree adjusts circuit and LED variable information display device.
Background technique
LED changeable-message sign is a kind of variable information advices plate for being used to induce the magnitude of traffic flow installed outdoors, is
Traffic condition and the important equipment of guidance information publication, it is believed by the traffic of basic display unit of LED light emitting device
Breath display equipment, has figure and text importing effect.According to the command information of traffic, weather and command scheduling department, operation
Member can issue various notices and information to variable information board, can show the information such as warning sentence, ban, instruction and speed(-)limit sign,
To effectively induce the magnitude of traffic flow, the traffic capacity of road network is improved, safely and fast drives a vehicle and mentions for driver
For good service.
The dimming mode of common LED changeable-message sign is software light modulation currently on the market.Software dims common pulse
Width PWM realize light modulation, this dimming mode need to acquire a certain number of data compare again by software control light modulation,
It is needed simultaneously with preparation controller, at high cost, low efficiency.The utility model provides a kind of for the bright of LED changeable-message sign
Degree adjusts circuit system, regulates and controls without software, efficiency is improved while reducing costs.
Utility model content
In view of this, the present invention provides a kind of brightness regulating circuits of LED changeable-message sign and the variable letter of LED
Display device is ceased, main purpose is to improve the practicability of the brightness regulating circuit of LED changeable-message sign, it is ensured that
The stability of circuit system.
In order to achieve the above objectives, the utility model mainly provides the following technical solutions:
On the one hand, a kind of brightness regulating circuit of the LED changeable-message sign provided by the embodiments of the present invention,
The brightness regulating circuit of the LED changeable-message sign includes:
Resistance R1；
Resistance R4, one end of the resistance R4 are connected with one end of the resistance R1, another termination GND of the resistance R4
End；
Concatenated resistance R2 and capacitor C1, the concatenated resistance R2 and capacitor C1 are connected in parallel on the both ends resistance R4；
Concatenated switch S1, resistance R3 and slide rheostat R5, the concatenated switch S1, resistance R3 and slide rheostat
R5 is connected in parallel on the both ends resistance R4；
Photosensitive sensor J1, the photosensitive sensor J1 are connected in parallel on the both ends capacitor C1；
The resistance R1 other end is pressure feedback port.
Preferably, the photosensitive sensor J1 is photo resistance.
On the other hand, the purpose of this utility model and to solve its technical problem also and can be used following technical measures further real
It is existing.
By a kind of LED variable information display device, the LED variable information display device includes show ontology, described
LED variable information display device further includes brightness regulating circuit, and the brightness regulating circuit is above-mentioned LED changeable-message sign
Brightness regulating circuit, wherein the resistance R1 other end be the show ontology pressure feedback port.
By above-mentioned technical proposal, under the brightness regulating circuit of the LED changeable-message sign of the utility model at least has
Column advantage:
1. the utility model is a kind of brightness regulating circuit system for LED changeable-message sign, there is circuit structure
Simply, the advantages that practical.The switching circuit for devising corresponding function simultaneously, improves the practicability of circuit system, it is ensured that
The stability of circuit system.
2. the utility model is suitable for the adjusting of LED changeable-message sign brightness, adopting for light is realized by photosensitive sensor
Collection reuse circuit resistance value goes to dim, and dimming mode is flexible, at low cost, high-efficient.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.
Detailed description of the invention
Fig. 1 is a kind of circuit of the brightness regulating circuit for LED changeable-message sign that the embodiments of the present invention provide
Figure.
Specific embodiment
Further to illustrate that the utility model is the technical means and efficacy reaching predetermined purpose of utility model and being taken,
Below in conjunction with attached drawing and preferred embodiment, to specific embodiment, structure, feature and its function according to the present utility model application
Effect, detailed description is as follows.In the following description, what different " embodiment " or " embodiment " referred to is not necessarily same implementation
Example.In addition, the special characteristic, structure or feature in one or more embodiments can be combined by any suitable form.
Embodiment 1
A kind of brightness regulating circuit of LED changeable-message sign as shown in Figure 1, the LED changeable-message sign it is bright
Degree adjusts circuit
Resistance R1；
Resistance R4, one end of the resistance R4 are connected with one end of the resistance R1, another termination GND of the resistance R4
End；
Concatenated resistance R2 and capacitor C1, the concatenated resistance R2 and capacitor C1 are connected in parallel on the both ends resistance R4；
Concatenated switch S1, resistance R3 and slide rheostat R5, the concatenated switch S1, resistance R3 and slide rheostat
R5 is connected in parallel on the both ends resistance R4；
Photosensitive sensor J1, the photosensitive sensor J1 are connected in parallel on the both ends capacitor C1；
The resistance R1 other end is pressure feedback port.
When it is implemented, the photosensitive sensor J1 is photo resistance.Photo resistance (photoresistor or
Light-dependent resistor) or photoconductive tube (photoconductor), common making material is cadmium sulfide, in addition
There are also the materials such as selenium, aluminium sulfide, vulcanized lead and bismuth sulfide.These making materials have under the light irradiation of specific wavelength, resistance
The characteristic that value is reduced rapidly.This is because the carrier that illumination generates is involved in conduction, drift about under the action of extra electric field
Movement, electronics march on towards the anode of power supply, and hole marches on towards the cathode of power supply, so that the resistance value of photo-resistor be made to decline rapidly.Light
Sensitive resistor is all laminated structure, to absorb more luminous energy.When its irradiation by light, semiconductor chip (photosensitive layer)
Interior photo resistance outline drawing and circuit symbol just inspire electronics-hole pair, participate in conduction, make intensifying current in circuit.In order to
Obtain high sensitivity, the electrode of photo resistance frequently with comb-like pattern, it be under certain exposure mask on photo-conductive film
What the metals such as vapor deposition gold or indium were formed.
When external environment brightness is higher, the resistance value of the photosensitive sensor J1 increases, the company of the resistance R1 and R4
Junction G is big to the GND end resistance value, thus, by the brightness for the LED changeable-message sign that the brightness regulating circuit is adjusted
It can reduce；When external environment brightness is lower, the resistance value of the photosensitive sensor J1 is reduced, the connection of the resistance R1 and R4
G is small to the GND end resistance value at point, and the brightness of the LED changeable-message sign can improve.
When the photosensitive sensor J1, which appears corrupted, to work, it can be manually closed the switch S1, then
By adjusting the resistance value of the slide rheostat R5, G can be reduced at the tie point of the resistance R1 and R4 to described
GND end resistance value, to improve the brightness of the LED changeable-message sign.
When the LED changeable-message sign works long hours, and light decay brightness reduction occurs in tube core, it is closed described open
S1 is closed, the resistance value of the slide rheostat R5 is adjusted, G can be reduced at the tie point of the resistance R1 and R4 to described
GND end resistance value, to improve the brightness of the LED changeable-message sign, the photosensitive sensor J1 is still normal at this time
Work.
The circuit structure of the brightness regulating circuit of the LED changeable-message sign is simple, and can be applied to various need
The circuit of brightness regulation is carried out to LED changeable-message sign.The brightness regulating circuit of the LED changeable-message sign has knot
The simple and practical advantage of structure.
On the other hand, by devising the switching circuit of corresponding function, the practicability of circuit system is improved, it is ensured that be
The stability of system circuit.
The brightness regulating circuit of the LED changeable-message sign is suitable for the adjusting of LED changeable-message sign brightness, passes through
Photosensitive sensor realizes the acquisition of light, and reuse circuit resistance value goes to dim, and dimming mode is flexible, at low cost, high-efficient.
Embodiment 2
Present embodiment discloses a kind of LED variable information display device, the LED variable information display device includes display
Ontology and brightness regulating circuit, the brightness regulating circuit are the brightness regulation of LED changeable-message sign described in embodiment 1
Circuit, wherein the resistance R1 other end is the pressure feedback port of the show ontology.
The LED variable information display device realizes the acquisition of light by photosensitive sensor, and reuse circuit resistance value goes to adjust
Light, structure is simple, and practical, and in addition dimming mode is flexible, at low cost, high-efficient.On the other hand, by devising phase
The switching circuit for answering function improves the practicability of circuit system, it is ensured that the stability of circuit system.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention,
It is still within the scope of the technical solutions of the present invention.
Claims (3)
1. a kind of brightness regulating circuit of LED changeable-message sign, which is characterized in that the brightness of the LED changeable-message sign
Adjusting circuit includes:
Resistance R1；
Resistance R4, one end of the resistance R4 are connected with one end of the resistance R1, the end another termination GND of the resistance R4；
Concatenated resistance R2 and capacitor C1, the concatenated resistance R2 and capacitor C1 are connected in parallel on the both ends resistance R4；
Concatenated switch S1, resistance R3 and slide rheostat R5, the concatenated switch S1, resistance R3 and slide rheostat R5 are simultaneously
It is associated in the both ends resistance R4；
Photosensitive sensor J1, the photosensitive sensor J1 are connected in parallel on the both ends capacitor C1；
The resistance R1 other end is pressure feedback port.
2. the brightness regulating circuit of LED changeable-message sign as described in claim 1, which is characterized in that
The photosensitive sensor J1 is photo resistance.
3. a kind of LED variable information display device, including show ontology, which is characterized in that it further include brightness regulating circuit, it is described
Brightness regulating circuit is the brightness regulating circuit of the described in any item LED changeable-message signs of claim 1 to 2, wherein described
The resistance R1 other end is the pressure feedback port of the show ontology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822132602.9U CN209000511U (en) | 2018-12-19 | 2018-12-19 | The brightness regulating circuit and LED variable information display device of LED changeable-message sign |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822132602.9U CN209000511U (en) | 2018-12-19 | 2018-12-19 | The brightness regulating circuit and LED variable information display device of LED changeable-message sign |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209000511U true CN209000511U (en) | 2019-06-18 |
Family
ID=66808250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822132602.9U Expired - Fee Related CN209000511U (en) | 2018-12-19 | 2018-12-19 | The brightness regulating circuit and LED variable information display device of LED changeable-message sign |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209000511U (en) |
-
2018
- 2018-12-19 CN CN201822132602.9U patent/CN209000511U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190618 Termination date: 20201219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |