CN104329628B - Greasy weather spectrum adjustable type LED street lamp - Google Patents

Abstract

The invention belongs to the technical field of semiconductor lighting devices, in particular to an LED street lamp with adjustable fog spectrum. The street lamp includes a spectrum-adjustable LED street lamp, remote control equipment, and manual control panel; the LED lamp contains multiple groups of LED packaging devices with different light colors to mix light and emit white light, and at least one group of peak wavelengths 570-600 ? nm yellow light packaged devices, each group of packaged devices has a separate drive control, and the power is adjustable. The street lamp of the present invention emits white light at night with good visibility to provide illumination for the road; in foggy days or severe haze weather with poor visibility, the street lamp light will switch to yellow light with strong fog penetration and enhance the radiation of yellow light flux. The invention can provide a good lighting environment for roads under different weather conditions, can effectively reduce the incidence of traffic accidents, and improve road traffic safety; it is flexible and easy to control, has strong operability, and can be widely used in docks, airports, Tunnels and other occasions.

Description

Fog Spectrum Adjustable LED Street Light

technical field

The invention belongs to the technical field of semiconductor lighting devices, and in particular relates to an LED street lamp with adjustable spectrum in foggy weather.

Background technique

LED is a high-efficiency and energy-saving light source. With the maturity of LED lighting technology, its application in street lamps has become more and more extensive, gradually replacing traditional gas discharge lamps. The use of LEDs also enables road white lighting, improves the resolution of small objects, and provides better and safer lighting for pedestrians and vehicles. However, in foggy and hazy weather, white light does not have strong fog penetration; while yellow light with a wavelength of 580-600nm has good fog penetration, which can better illuminate the road. How to balance white lighting and foggy yellow lighting is an important issue facing LED street lamps.

The definition of fog in meteorology is any weather phenomenon in which the visibility is lower than 1 km due to the condensation of suspended water vapor in the atmosphere. When there is sufficient water vapor, breeze and stable atmosphere, the temperature is close to the dew point, and when the relative humidity reaches 100%, the water vapor in the air will condense into fine water droplets suspended in the air, reducing the visibility at the ground level. Haze refers to a large number of extremely fine dry dust particles evenly floating in the air, making the air with horizontal visibility less than 10 kilometers generally turbid, making distant bright objects slightly yellow and red, and dark objects slightly blue . Fog and smog have a great impact on road traffic. Due to the reduction of visibility, the probability of traffic accidents is greatly increased. Vehicles must slow down. When the fog and smog are very serious, the road may even be closed.

Patent CN201919196U proposes a street lamp composed of LED light sources and traditional gas discharge lamps. In the case of good visibility, LED light sources are used to provide lighting to achieve energy-saving effects, and gas discharge lamps are used to provide yellow light lighting in foggy days, but This solution is relatively complicated both in terms of the lamp itself and the control method, and the energy efficiency of the gas discharge lamp used for yellow lighting is low, and it is difficult to adjust the light. Patent CN201425250Y proposes a LED street light device that can change color according to the weather. An air humidity dew point temperature sensor can judge whether there is fog. If there is fog, turn on the control switch of yellow light. They are separated and work independently; yellow light does not participate in the synthesis of white light illumination, and the utilization rate is low; and the air humidity dew point temperature sensor may make wrong judgments and cannot detect haze.

In recent years, with the rapid development of LED technology and intelligent control technology, the dimming and color adjustment of LED lamps has become simple and easy. There are also various ways to realize it, and the control is also very convenient. LED lamps illuminated by sky yellow light.

Contents of the invention

The object of the present invention is to propose an LED street lamp with adjustable spectrum in foggy days, which emits white light to provide road lighting in normal times, and emits yellow light with strong fog penetration to provide lighting in foggy days. The problem of sky yellow lighting.

The spectrum-adjustable LED street lamp in foggy days provided by the present invention includes an LED street lamp with adjustable spectrum, remote control equipment, and a manual control panel; the LED street lamp can adjust its luminous spectrum to emit white light at night with good visibility , in foggy days with poor visibility or severe haze weather, it emits yellow light with strong fog penetration.

The LED street lamp is composed of multiple groups of packaged devices with different light colors; the packaged devices can be composed of a single LED or multiple LEDs, and each packaged device has an independent drive control. Said LED street lamp contains at least one group of yellow light packaging devices with a peak wavelength of 570-600nm. The yellow light packaging device may be a yellow LED chip package, or a package converted from a blue LED chip plus yellow phosphor powder.

In the present invention, the power of the packaging device is adjustable; when the normal lighting emits white light, the yellow light packaging device works at reduced power, and the yellow light emitted by it is mixed with the light emitted by other devices to form white light; when it emits yellow light in foggy days, other devices Reduce power or turn off, and the yellow light device is adjusted to a high-power working state.

In the present invention, the luminous intensity of the yellow light device after power adjustment can be adjusted according to the visibility of heavy fog and haze weather in the weather forecast, corresponding to the yellow early warning, orange early warning and red early warning of heavy fog, and the yellow light changes from weak to strong. is multi-level.

In the present invention, the remote control device can remotely control the LED street lamps, specifically according to weather forecasts and road traffic and other relevant department's forecasts about the visibility of fog and haze weather, the management personnel input the forecast information into the remote The control device (street lamp control terminal) enables the street lamp to automatically switch between white light and yellow light and adjust the intensity of yellow light at a certain moment.

In the present invention, the LED street lamps can be manually controlled; each certain number of street lamps is a group, and each group of street lamps has a manual control panel, which can manually switch the spectrum of the street lamps on site to adjust the intensity of yellow light. When the remote control fails or in some special cases, the street lamp can be controlled by the manual control switch on site.

The luminous intensity of the yellow light packaged device of the LED street lamp can be adjusted according to the weather forecast or real-time visibility. The lower the visibility, the greater the luminous intensity, which can effectively reduce the incidence of traffic accidents and improve road traffic safety.

The adjustable fog spectrum LED street lamp of the present invention makes full use of the characteristics of LEDs that are easy to adjust and mix colors, integrates road white light lighting and foggy yellow light lighting into one lamp, solves the contradiction between the two, and can It provides a good lighting environment for the road under certain conditions, and the control is also flexible and convenient. The whole solution has strong operability and can be widely used in various occasions such as docks, airports, and tunnels.

Description of drawings

Fig. 1 is a system diagram of the LED street lamp of the present invention.

detailed description

The present invention will be further described below in conjunction with specific implementation examples. The described embodiments are only some of the embodiments of the invention. All other embodiments without creative achievements based on the embodiments of the present invention belong to the protection scope of the present invention.

Spectrum adjustable LED street light in foggy weather, its LED lamp is composed of three groups of red (R), yellow (Y) and blue (B) LED chips to mix light to obtain white light, the peak wavelengths are 630nm, 580nm and 420nm respectively, each group of chips All have independent drive control, so that better white light quality can be obtained. Among them, the power of the yellow light chip will be higher than that of the other two chips, because the yellow light chip must provide the same illuminance level as the white light when working alone, and it also needs to work at different powers according to the severity of the fog. It can work with super power, and the heat dissipation device of the lamp fully takes this into account to ensure that the increase in the power of the yellow light chip does not affect the life of the entire lamp. The remote control of street lamps can be realized by power line carrier technology, and every 50 street lamps is a group, and there is a unified on-site control panel. On-site manual control has priority over remote control.

On nights with good visibility, the street lights will be turned on at 18:00 according to the preset time and emit white light. One day, the meteorological department predicted that there would be a yellow fog warning at 1:00 am that night, and the staff would set up street lights on the control terminal to convert the white light into yellow light at 1:00 am, and the intensity of the yellow light was level 1. According to the settings, the street lights will turn on and emit white light at 18:00, and automatically switch to level 1 yellow light at 1:00 in the morning. The on-duty staff found through monitoring that the street lights in a certain section did not respond accordingly, and were still illuminated with white light, so they contacted the staff in the area and rushed to the scene to manually adjust the street lights to level 1 yellow light through the control panel. According to the preset, the street lights will be turned off at 6:00 in the morning, but according to the temporary forecast of the meteorological department, the heavy fog will continue and become an orange warning. The staff will extend the lighting time of the street lights according to the forecast information and adjust the yellow light level to 2 accordingly. class. If a wrong operation occurs in a certain road section, it can also be adjusted through the on-site control panel.

It can be seen from this embodiment that the LED street lamp can take into account both white light illumination and foggy yellow light illumination, and is easy to control and easy to operate.

Claims (3)

1. greasy weather spectrum adjustable type LED street lamp, is characterized in that comprising a spectrum adjustable LED street lamp light fixture, remote control equipment, manual control panel; Described LED street lamp light fixture, its luminescent spectrum is adjustable: send white-light illuminating at the night of visibility good, launches the stronger gold-tinted of mist transmitting when visibility poor greasy weather or serious haze weather; Wherein:

Described LED street lamp light fixture is made up of the different photochromic packaging of many groups; Described packaging is made up of single or plurality of LEDs, and each packaging has independent drived control; Described LED street lamp light fixture at least comprises the gold-tinted packaging of one group of peak wavelength 570-600nm; Described gold-tinted packaging is yellow light LED chip package, or blue-light LED chip adds the encapsulation of yellow fluorescent powder conversion;

Described packaging power adjustable: when normal illumination emits white light, power work falls in gold-tinted packaging, and the light that its gold-tinted sent and other devices send is mixed into white light; When greasy weather Yellow light-emitting low temperature, power or closedown fall in other devices, and gold-tinted packaging is adjusted to high-power operation state;

Luminous intensity after described gold-tinted packaging power adjusting regulates according to the dense fog of weather forecast and the visibility of haze weather, the yellow early warning of corresponding dense fog, orange early warning and red early warning, gold-tinted change from weak to strong be divided into multistage.

2. greasy weather spectrum adjustable type LED street lamp as claimed in claim 1, it is characterized in that described remote control equipment carries out Long-distance Control to LED street lamp, the forecast of the visibility about greasy weather and haze weather namely provided according to weather forecast and road traffic relevant departments, forecast information is inputted remote control equipment, makes street lamp at a time automatically realize the switching of white light and gold-tinted and the adjustment of yellow light intensity.

3. greasy weather spectrum adjustable type LED street lamp as claimed in claim 1, it is characterized in that with the LED street lamp of some be one group, each group street lamp has a manual control panel, manually switches street lamp spectrum at the scene, regulate yellow light intensity, realize LED street lamp Non-follow control.