CN107990243B - A multi-dimensional composite light distribution street lamp - Google Patents

Abstract

The invention is applicable to the technical field of road lighting, and provides a multi-dimensional composite light distribution street lamp, which includes a plurality of lighting subsystems of different dimensions and an intelligent control system. Through optical and structural light distribution, the function of the optical light distribution is to project the light energy as far as possible with minimum loss, so as to solve the problem of insufficient illumination of the road center by the street lamp. The function of the structural light distribution is to coordinate with the optical light distribution function to maximize the utilization of light energy with the smallest loss of light efficiency and to solve the problem of street lamp glare. The invention integrates the light sources and control elements of the lighting subsystems at low lamp positions into a lamp body to form a solid street lamp, and realizes the substantiation and integration of the lighting subsystems. The street light has the characteristics of no glare, high lighting efficiency and adaptive control. It has the function of landscape lighting, which can ensure traffic safety, improve traffic efficiency, beautify the urban environment, and ensure driving safety.

Description

A multi-dimensional composite light distribution street lamp

technical field

The invention belongs to the technical field of road lighting, in particular to a multi-dimensional composite light distribution street lamp.

Background technique

In road lighting, glare has always been an important evaluation index. Glare refers to visual disturbances that have an unsuitable range of brightness in the field of view and extreme brightness contrasts in space or time that cause discomfort or reduce visibility.

CJJ45-2015 clearly stipulates that the design and detection index for limiting glare is the threshold increment, and the threshold increment is used as the index to set the upper limit for glare, which is an important factor for evaluating the quality of road lighting.

Studies have shown that there are many ways to reduce glare, but there is a contradiction: all measures to reduce glare have their cost - the loss of light efficiency of the street lighting system. Therefore, the essence of the need for glare reduction is to greatly reduce glare while maintaining high light efficiency.

In addition, the threshold increment specification is limited to "forward glare" that interferes with the driver's forward vision, but in fact, there are other glare on the road.

We have noticed that in the lighting of highways, municipal roads and tunnel roads, in addition to the "forward glare" that interferes with the driver's forward vision, there are two other types of glare: the glare that the driver sees in the rearview mirror - "Rearsight glare" and "sidesight glare".

"Rearsight glare" refers to the glare of the street light source located behind the driver, which strongly interferes with the driver's view of the rearview mirror. The existence of rear-view glare makes the rear-view mirror of the motor vehicle bright, and the position and distance of the rear vehicle cannot be effectively identified.

"Side glare" refers to glare in which the light source is located on the side of the driver and causes strong interference to the driver.

Obviously, although there is no clear design specification and detection index for the latter two glare phenomena caused by street lights on expressways, no effective control method has been found so far. However, basic road sections do exist under traditional lighting methods (especially wide roads), and they also belong to the category of direct glare, which strongly interferes with drivers driving at night.

In addition, for street lights set at low light levels, side-view glare and rear-view glare tend to be more prominent.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a multi-dimensional composite light distribution street lamp with high lighting energy efficiency and integrating multiple lighting functions.

1. The characteristics of low-level street light glare

This lighting method is very sensitive to glare.

Low-level street lights and high-level street lights present significantly different glare patterns and characteristics.

(1) Ultra-small solid angle

Under the condition of low light level, the distance between the driver and the glare light source in front is much larger than the distance between the light source and the target, resulting in an extremely small solid angle between the line of sight of the driver and the glare light, which is usually no more than 10. Please refer to the figure. 1. Therefore, even if the glare light source does not directly illuminate the driver's eyes and the absolute value of the brightness is not high, as long as the brightness of the front glare light source and the target object reaches a certain contrast, the driver will still feel strong glare. The glare whose main optical axis does not point to the human eye belongs to indirect direct glare. According to the threshold increment (glare) calculation formula, the threshold increment is proportional to the brightness of the light curtain, and the brightness of the light curtain is proportional to the solid angle. Therefore, any retro-illumination component contributes to the threshold increment, especially the retro-illumination component of the low lamp level contributes more to the threshold increment.

(2) Ultra-small lamp scale

Under the condition of low light level, the street light occupies the road width, which requires that the street light cannot be as large as the high light level street light, especially the width is more strictly limited. In the range of 80 meters to 120 meters where the glare is the most obvious, due to perspective reasons, the low-level street lights in the driver's eyes are extremely small, which is a "bright spot". As a result, the commonly used and effective anti-glare treatment methods on the surface of street lamp lenses used in large street lamps, such as lens surface frosting, adding light-cutting grilles, and asymmetric light distribution methods, have all failed.

It is precisely because of the above two characteristics that the glare problem is a crucial problem for street lamps with low lamp level settings.

(3) Under the condition of low light level lighting, the driver usually feels the maximum glare at a distance of 60-120M away from the glare light source.

2. Composite light distribution technology

1. Glare decomposition

For low-level lighting, the glare of the light source can be decomposed into two parts:

(1) Glare in the horizontal direction

Horizontal direct light refers to the direct light from the front (horizontal direction) of the right street lamp body that the driver feels, see Figure 2.

(2) Vertical glare

The vertical direct light refers to the direct light that the driver feels from the lower part of the front street lamp body (vertical direction), see Figure 3.

2. Calculation of full cut-off baffle

A comprehensive analysis of the horizontal and vertical direct light of low-level street lamps shows that if the light source is arranged in a horizontal direction, due to the downward projection of the street lamp shaft, only the vertical direct light needs to be eliminated; When the light source is arranged in a vertical direction, only the direct light in the horizontal direction is left as the glare light source. In fact, regardless of the low-level reverse or forward lighting mode, the light source is arranged in a horizontal direction, so it is only necessary to prevent direct light in the vertical direction. In fact, this is precisely the natural advantage of low-level street lights. High-level street lights must be anti-glare treatment in both horizontal and vertical directions, and the difficulty cannot be overcome in current technology. Please refer to Figure 4 for the computational model of the shading baffle.

Set: L is the length of the baffle; D is the length of the light-emitting surface of the light source; H is the height of the human eye; N is the height of the lamp body;

S is the distance between the person and the lamp; b is the vertical angle of the light source; a is the angle between the line of sight and the horizontal line;

Then the relationship between the length of the baffle L and the length D of the light-emitting surface of the light source is as follows:

According to the above model calculation, we can get:

(1) When the length of the upper baffle reaches 360 mm, the clear height of the light source is less than 20 mm, and the ratio of the clear height of the light source to the length of the baffle is 1/18, which is the critical value of direct glare in the vertical direction.

(2) Under this critical value, the driver will not see direct glare and one-time reflected glare when moving his viewpoint.

(3) Under this critical value, the effective range of the low-level reverse/forward lighting method can reach 18 meters, that is, the high-to-distance ratio is 1/12, which means that when the low-level reverse/forward lighting method is used, the The effective irradiation distance that can be covered by a lamp height of 1 meter reaches 18 meters, which is far beyond the distance that any high-level and low-level street lamps can achieve by simple optical light distribution.

The present invention is realized in this way, a multi-dimensional composite light distribution street lamp includes a lamp body, a plurality of lighting subsystems and intelligent control systems of different dimensions arranged on the lamp body; the installation height of the lamp body is less than 1.2 meters , the light projection axis of the lighting subsystem is one or more directions; the lighting subsystem adopts optical light distribution and structural light distribution, and the optical light distribution adopts free-form surface lenses and microstructures (please refer to FIG. 5 ) , the structural light distribution adopts the lamp body structure light guide and light interception (see Figure 6), and the intelligent control system controls the switching and operating power of all lighting subsystems according to the received traffic flow statistics and sky brightness conditions, And automatically switch lighting subsystems according to weather conditions.

Further, the projected light beam angle of the lighting subsystem is less than 10°, and the projected light axis-to-height ratio is greater than 10.

Further, the lighting subsystem includes a normal mode and an energy-saving mode, the normal mode is always fully on during the normal turn-on time, and the energy-saving mode is dimming on the basis of the normal mode.

Further, the plurality of lighting subsystems of different dimensions include a low-light level forward lighting subsystem, and the illumination direction of the low-light level forward lighting subsystem is the same as the driving direction of the illuminated lane, and its illumination space is: The space below the height of the lamp body and the road surface; the light-emitting surface of the light source of the low-lamp-position forward lighting subsystem is cut off (see FIG. 7 ), and the stray light reflection surface along the lower edge thereof is cut off.

Further, the plurality of lighting subsystems of different dimensions also include a low-light level reverse lighting subsystem, and the illumination direction of the low-light level reverse lighting subsystem is opposite to the driving direction of the illuminated lane, and its illumination space is a lamp. The space below the height of the body and the road surface; the light source emitting surface of the low-light-level retro-illumination subsystem cuts off light (see FIG. 8 ), and at the same time, the lower edge of the stray light reflection surface is cut off.

Further, the plurality of lighting subsystems of different dimensions also include a lateral lighting subsystem, and the illumination space of the lateral lighting subsystem is the space in front of the lamp body, which is closed in normal weather and only opened in haze weather. ; its operation mode is fully open in haze weather and automatically switches with the lighting subsystem; the light source of the lateral lighting subsystem is located in a hollow see-through lamp body, and its light outlet intercepts light (see Figure 9).

Further, the multiple lighting subsystems of different dimensions also include an alert lighting subsystem, a warning lighting subsystem, a landscape lighting subsystem, a prompt lighting subsystem, and a vertical lighting subsystem;

The light source of the wake-up lighting subsystem is white, blue, green, violet or luminescent light sources with a color temperature higher than 5000K, arranged in a single color or alternately;

The warning lighting subsystem is a remote control warning flashing subsystem, and a manual wireless remote control warning button is arranged on the lamp body. After pressing the warning button, the warning lighting subsystem is turned on; the warning lighting subsystem is separate Control, separate power supply, usually not open;

The landscape lighting subsystem projects light toward the bottom of the lamp body;

The prompt lighting subsystem projects light to the upper part and the lower part of the lamp body respectively, the illumination direction is perpendicular to the road surface, the illumination space is below the lamp body, and the emitted light has at least two different colors;

The irradiation direction of the vertical lighting subsystem is perpendicular to the road surface, and its irradiation space is below the lamp body and above the road surface; its irradiation direction has no intersection with the components of other lighting subsystems; its operating mode is normally not on, Manual activation only in special cases.

Further, the multi-dimensional and multi-layer lighting street lamp also includes a smart city subsystem, and the smart city subsystem includes a street lamp operation monitoring subsystem, an urban road monitoring subsystem, an urban environment monitoring subsystem and a street lamp photovoltaic integration subsystem.

Further, the upper cover of the lamp body is designed as a ridge type, which has the function of preventing snow accumulation; the inner partition plate of the lamp body is designed as a grid type, which has the function of preventing dust accumulation; all electrical parts of the lamp body are designed to be waterproof up to IP67. unit, with independent waterproof function.

Compared with the prior art, the present invention has the beneficial effect that: the function of the optical light distribution of the present invention is to project the light energy as far as possible with the smallest loss, so as to solve the problem of insufficient illumination of the road center by the street lamp. The function of its structural light distribution is to coordinate with the optical light distribution function to maximize the use of light energy with the smallest loss of light efficiency and to solve the problem of street lamp glare. The present invention integrates the light sources and control elements of the lighting subsystems at low lamp positions into a lamp body to form a solid street lamp, thereby realizing the substantiation and integration of the lighting subsystems. The street light has the characteristics of no glare, high lighting efficiency and adaptive control. It has the function of landscape lighting, which can ensure traffic safety, improve traffic efficiency, beautify the urban environment, and ensure driving safety.

Description of drawings

Fig. 1 is the solid angle schematic diagram of the glare of low lamp position;

Figure 2 is a schematic diagram of horizontal glare;

Figure 3 is a schematic diagram of vertical glare;

Fig. 4 is the calculation model diagram of shading baffle;

Figure 5 is a schematic diagram of the optical light distribution of street lights;

Fig. 6 is a schematic diagram of a cut-off calculation model;

FIG. 7 is a schematic diagram of reducing the glare of the low-level forward lighting subsystem;

FIG. 8 is a schematic diagram of reducing the glare of the low-level reverse lighting subsystem;

FIG. 9 is a schematic diagram of reducing the glare of the low-level lateral lighting subsystem;

Figure 10 is a schematic diagram of a typical street lamp bat-shaped light distribution curve and its decomposition;

11 is a schematic diagram of the light intensity distribution perpendicular to the direction of the road axis;

Fig. 12 is a schematic diagram showing that the light intensity distribution can be decomposed into two parts to the left and to the right;

Figure 13 is a schematic diagram of "forward lighting";

Figure 14 is a schematic diagram of "reverse lighting";

Figure 15 is an analysis diagram of the illuminance in the forward irradiation direction;

Fig. 16 is the illuminance analysis diagram of the reverse irradiation direction;

Figure 17 is a schematic elevation view of a low-light level reverse lighting subsystem;

FIG. 18 is a schematic plan view of a low-lamp level reverse lighting subsystem;

Figure 19 is a schematic diagram of the coverage of the road surface by the reverse lighting of the low lamp position;

Fig. 20 is a schematic diagram of reflection characteristics of rough road surface;

Figure 21 is a schematic elevation view of the low-light level forward lighting subsystem;

Figure 22 is a schematic plan view of a low-lamp level forward lighting subsystem;

Figure 23 is a schematic diagram of the effect of vertical illuminance on the brightness of the target surface;

Figure 24 is a vertical gradient distribution diagram of spatial illuminance;

Figure 25 is a schematic elevation view of the forward lighting subsystem;

Figure 26 is a schematic plan view of the forward lighting subsystem;

Figure 27 is a schematic elevation view of the lateral lighting subsystem;

Figure 28 is a schematic plan view of the lateral illumination subsystem;

Figure 29 is a schematic plan view of the remote control alarm flash subsystem;

Figure 30 is a schematic elevation view of a vertical lighting subsystem;

Figure 31 is a structural diagram of a control dimming module;

Figure 32 is a schematic diagram of the structure of communication fault, cable disconnection, short-circuit alarm record, and statistical functions;

Figure 33 is a schematic diagram showing the lighting elevation;

34 to 39 are schematic structural diagrams of a multi-dimensional composite light distribution street lamp body in an embodiment of the present invention.

Description of reference numerals

1. Top cover of lamp body 2. Light outlet for forward lighting 3. Light outlet for lateral lighting

4. Warning lighting light outlet 5. Reverse lighting light outlet 6. Reverse lighting baffle

7. Reverse lighting source 8. Forward lighting source 9. Storage tank for electronic circuits and equipment

10. Front lighting and lateral lighting, warning lighting partitions 11. Anti-glare partitions

12. Cover plate positioning slot 13. Top plate fixing screw hole 14. Back light transmission port

15. Fixing screw holes for lamp body installation 16. Installation position of horizontal and warning lighting sources

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

Embodiments of the present invention provide a multi-dimensional composite light distribution street lamp, the lighting street lamp includes a lamp body and a plurality of lighting subsystems integrated in the lamp body. The installation height of the lamp body is less than 1.2 meters, and the light projection axis of the lighting subsystem is one or more directions; the lighting subsystem adopts optical light distribution and structural light distribution, and the optical light distribution adopts free light distribution. Curved lenses and microstructures, the structural light distribution adopts the lamp body structure to guide light and cut light, and the intelligent control system controls the switching and operating power of all lighting subsystems according to the traffic flow statistics and sky brightness it receives. Automatic switching of lighting subsystems based on weather conditions.

Below, each subsystem of this embodiment will be described in detail:

1. Function, working principle and design of each subsystem

1. Regarding the low-level reverse lighting subsystem:

(1) Working principle:

Traditional road lighting generally adopts bat-type light distribution, see Figure 10. The light intensity perpendicular to the direction of the road axis in Figure 10 mainly solves the lighting problem of road width, please refer to Figure 11.

In Figure 10, the light intensity in the same direction of the road axis can be decomposed into two parts of light intensity to the left and right, which correspond to the same illumination direction and the opposite direction as the driving direction of the motor vehicle (refer to Figure 12), and the light intensity in this direction dominates The road brightness and space vertical illuminance felt by the driver, please refer to the following analysis for the specific reasons:

The illumination direction of the main optical axis of the light source is the same as the driving direction of the motor vehicle, which is called "forward lighting" (see Figure 13), and the opposite is called "reverse lighting" (see Figure 14). It is not difficult to see that the bat-type light distribution is combined by two ways of high lamp position forward lighting and reverse lighting.

a. Observation height, observation distance and observation angle setting

Observation height: As an observer of a motor vehicle driver, the height from the road (working surface) is usually 1.2M (corresponding to a car) ~ 1.6M (corresponding to a large vehicle), and the middle value of the observation height is 1.4M (IESNA RP-8 -2000 is set to 1.45M);

Observation distance: Usually the observation distance is 60M to 100M, and the middle value is 80M;

角取值分为为1.2°到0.45°之间(见CIE 140 -2000 ROADLIGHTING CALCULATIONS及《照明测量方法》GB5700-2008，IESNA RP-8-2000取中为 1°)，本处观察角取中间值为

Observation angle: normal observation angle

The angle value is divided into 1.2° to 0.45° (see CIE 140 -2000 ROADLIGHTING CALCULATIONS and "Lighting Measurement Methods" GB5700-2008, IESNA RP-8-2000 takes the middle as 1°), the observation angle here is the middle value is

b. Comparison of energy efficiency on a two-dimensional plane under the condition of regular reflection

In regular reflection, since the reflected radiation is related to the incident direction of the light source, the size of the incident angle, and the observation angle, the forward lighting method and the reverse lighting method have significantly different lighting energy effects. The following is an analysis of the reflected radiation on the regular reflective road surface by the forward lighting method and the reverse lighting method on a two-dimensional plane.

c. Retinal illuminance under forward illumination

则

如图15所示。Let E _i be the incident illuminance vector of the light source, _Er is the reflected illuminance vector, the boresight is _Ve , the incident angle of the projection light is α, the angle between the boresight direction and the reflected illuminance vector is β, and the angle between the boresight direction and the reflected illuminance vector is β. The included angle is

but

As shown in Figure 15.

The light intensity in this direction can be determined according to the light distribution curve and the light projection angle, and the illuminance Ei formed by the point light source and the calculation point can be obtained by the cosine law. For regular reflection, E _r =E _i in value. According to the subscript convention ¹ in this paper, the retinal illuminance E _r·e received by the motor vehicle driver in the direction of sight under the forward projection lighting is shown in formula (1).

d. Retinal illumination under reverse illumination

The reverse projection lighting is shown in Figure 16, where

The retinal illuminance E _r·e received by the driver of the motor vehicle in the direction of sight under the reverse projection illumination is shown in Equation (2).

¹ Subscript convention: i: incident incident, E _i : incident illuminance vector; r: reflection reflection, E _r : reflected illuminance vector; e: eyes human eye, E _{r e} : reflected illuminance in the direction of the driver's eye axis component of ; t: transversal lateral, the lateral component of _{Er t} reflected illuminance; v: vertical, the vertical component of Er _{r v} reflected illuminance.

e. Comparison of energy efficiency under different lighting modes

Using the retinal illuminance received by the motor vehicle driver's line of sight as an indicator, the energy efficiency of different lighting modes is compared. When the road reflectance is constant, the retinal illuminance is proportional to the retinal brightness.

f. Comparison of energy efficiency between high lamp level and low lamp level under forward lighting

It can be obtained by formula (1):

When α→0, _Er·e →0.

Its physical meaning is: the street lamp projects light vertically to the road, which is equivalent to "high light position forward lighting".

When α→90°, _Er·e <0.

Its physical meaning is: the street lamp projects light horizontally to the road, which is equivalent to "low-level forward lighting".

g. Comparison of energy efficiency between high lamp position and low lamp position under reverse lighting

It can be obtained by formula (2):

When α→0, _Er·e →0.

Its physical meaning is: the street lamp projects light vertically to the road, which is equivalent to "reverse lighting at high lamp position".

When α→90°, _Er·e →E _r .

Its physical meaning is: the height of the light source is close to the ground, which is equivalent to "reverse lighting at low lamp position", and the amount of light radiation E _e on the observation line of sight reaches the maximum.

The above comparison shows that, with retinal illuminance as the standard, among the four lighting modes, the energy efficiency of the low-lamp reverse lighting is the highest.

(2) Subsystem design:

In this reverse lighting subsystem, the installation height of the light source is lower than the driver's eye level, the illumination direction is opposite to the driving direction of the lane where the vehicle is located, and the illumination space is the space below the high position of the lamp and the road surface, and there is no elevation angle scattering, see Figure 17 to Figure 19.

In order to meet the needs of improving visibility, the color temperature of the light source of the low-level reverse lighting subsystem is not higher than 4000K, and the color temperature on both sides of the road is higher than the color temperature in the center of the road.

The operating modes of the low-lamp reverse lighting subsystem include normal mode (normally full-on during normal light-on time) and energy-saving mode (dimming on the basis of normal mode).

2. Regarding the low-level forward lighting subsystem:

(1) Function: Provide road background lighting.

(2) Working principle:

The reflection of street lamps on rough road surfaces is extremely irregular. Under rough road conditions, high-level reverse lighting, high-level forward lighting, low-level reverse lighting, and low-level forward lighting The average brightness value of the road measured in the forward lighting mode of the lamp position is higher than other lighting modes including reverse lighting.

Under the condition that the parameters of the lamps are kept the same, the reason why the average brightness value in the forward lighting mode at low lamp level is higher than that in the reverse lighting mode is that the road surface is in a rough-rough or rough-smooth mode, and the light directed to the road in the reverse direction is due to the ground The particles are relatively rough and the particles are prominent, so most of them are reflected back. The particles on the rough ground are prominent, and the non-directional reflection is the main one. The cement floor particles are relatively flat, and the directional reflection is the main. As shown in Figure 20.

It can be proved that on a rough road, when the light source illuminates the road ahead with the projection angle nearly parallel to the road (low light level) and the direction of illumination is the same as the direction of the vehicle (forward lighting), the highest light can be obtained in the direction of the driver's line of sight. Road surface reflection brightness.

(3) Subsystem design:

In order to meet the needs of high-efficiency road lighting, a low-light level forward lighting subsystem is set up. In this subsystem, the installation height of the light source is lower than the driver's eye level, and the illumination direction is the same as the driving direction of the lane. The illumination space is There is no elevation angle scattering in the space and road below the light height position, see Figures 21 and 22;

In order to meet the needs of improving visibility, the color temperature of the light source of the low-level reverse lighting subsystem is not lower than 4000K, and the color temperature in the center of the road is lower than the color temperature on both sides.

The operating modes of the low-lamp reverse lighting subsystem include normal mode (normally full-on during normal light-on time) and energy-saving mode (dimming on the basis of normal mode). The key issue of low-level forward lighting street lamps is to reduce rear-view glare.

3. Regarding the low-level forward lighting subsystem:

(1) Subsystem function: Provide front space lighting.

(2) The working principle of the sub-system:

The target surface brightness value, which describes the foreground brightness, cannot be directly measured under the condition of the diversity of the target surface. Here, we take advantage of the positive correlation between the vertical illuminance and the brightness of the target, and indirectly convert the vertical illuminance and the brightness of the target by "normalization", so as to obtain the data for calculating the visibility of the target: brightness, brightness contrast.

2D Model and Analysis of Space Lighting

See Figure 23 for a model that provides lighting for the front space:

E _e =E _r ·cosα ·cosβ

E _r : the reflected illuminance vector of the light source on the obstacle surface;

E _e : the component of the reflected illuminance of the obstacle surface in the direction of the driver's eye axis;

α: The incident angle of the light source, that is, the angle between the road surface and the light projection direction of the light source;

β: The angle between the reflected illuminance vector and the visual axis of the driver's eye.

The basic principle of low-level forward lighting is:

When α→0° and β→0°, E _e →E _r , that is, the amount of light radiation E _e on the observation line of sight will reach the maximum value; it is not difficult to see from the figure that the driver's line of sight direction is almost parallel to the road surface , In order to realize the purpose of identifying the obstacles ahead, when the light source illuminates the front space with the projection angle nearly parallel to the road (low light level) and the irradiation direction is the same as the driving direction (forward lighting), the vertical illuminance of the front space is the highest, The highest brightness of the target surface can be obtained in the direction of the driver's line of sight; the vertical illuminance of the front space is not only the main component that facilitates observation, but also the reason for the brightness of the target surface.

(3) Subsystem design:

The basic requirements for forward space lighting are: the luminance negative contrast and chromaticity contrast between the road background and the obstacles ahead should be enhanced.

On the other hand, a reasonable distribution gradient of vertical illuminance is also necessary for high efficiency and energy saving.

See Figure 24 for the illuminance vertical gradient distribution of the forward space lighting subsystem. The light distribution design of lamps should also provide appropriate lighting above 3 meters to facilitate the identification of the top profile of large vehicles. The vertical direction is divided into three lighting zones:

Concentrated irradiation area: 0 to 1.5 meters from the road height, the main function is to illuminate the road and cars;

Transition irradiation area: 1.5 to 3 meters from the road height, the main function is to illuminate the rear of the large vehicle body;

Marginal irradiation area: 3 to 5.3 meters from the road height, the main function is to display the outline of large vehicles.

Concentrated illumination area is the key area of forward lighting, which requires higher vertical illumination, followed by transition illumination area, and marginal illumination area is the lowest. The specific required values of the illuminance of the three lighting zones shall be determined by means of experimental tests.

The requirements for the forward lighting subsystem responsible for space lighting are: use a background light source (here, the light source illuminating the road) with high light color quality (here, it is simplified as high color rendering, not too high color temperature) ) The light source with certain chromatic aberration, the illumination of the provided space should have the property of negative brightness contrast.

The light source of the forward lighting subsystem, the color temperature is higher than the reverse lighting component, but lower than 5500K, the color rendering index is greater than 70, the height is near the eye level of the motor vehicle driver, and the illumination direction is the same as the driving direction of the lane in which it is located, (please See Fig. 25 and Fig. 26); The operating modes include normal mode (full turn-on during normal turn-on time) and energy-saving mode (dimming on the basis of normal mode).

4. About the low-level lateral lighting subsystem

(1) Subsystem function: provide extreme weather lighting.

(2) The working principle of the subsystem:

Under extreme weather conditions such as rain, fog, haze, and smoke, the efficiency of motor vehicle high beams is significantly reduced because a large number of suspended aerosol molecular clusters accumulate in the air in front of the motor vehicle. This leads to the fact that on the one hand, part of the incident light directed to the object in front of the motor vehicle is absorbed and scattered by the aerosol molecules on the light path before it reaches the object, and the scattered part forms a white fog curtain, that is, the "white (fog) wall effect". The driver cannot see the obstacles in front of the road; on the other hand, the incident light reaching the object in front of the motor vehicle is reflected and absorbed and scattered by the aerosol molecules suspended in the air, reducing the brightness of the reflected light Compared with the contrast, the visibility of obstacles in front of the motor vehicle is greatly reduced. For example, in heavy rain, we can see the silver-white rain threads in front of the car through the front windshield, but we cannot see the road surface.

When we change the illumination direction of the light so that the angle between the incident light and the driver's line of sight is close to vertical, the suspended aerosol molecules on the light path illuminating the object in front of the motor vehicle have only one chance to absorb and scatter, and will scatter in the object. The edge forms a bright outline to stand out in front of the driver, effectively overcoming the "white (fog) wall" phenomenon.

The chain lighting method that embodies this principle is considered to be an effective method to solve the foggy road lighting.

(3) Subsystem design:

The lateral lighting component subsystem aims to overcome the "white wall effect", and its function is to provide space lighting with the illumination direction and the driver's line of sight direction nearly vertical, enhance the contour contrast between the space ahead and the obstacles ahead, and improve extreme weather conditions. The visibility level of obstacles ahead.

The requirements for the lateral lighting subsystem are: use a light source with high penetrating power (here simplified as a low color temperature), the main optical axis of the spectrum is greater than 550nm, and its illumination direction is perpendicular to the direction of the lane where it is located and parallel to the road surface. (See Figures 27 and 28), the illumination space is the space in front of the lamp, which is closed in normal weather and only opened in foggy weather. The operating mode is fully open in hazy weather and linked with the road sub-lighting system.

5. About the low-level warning lighting subsystem

(1) Subsystem function: Provide lighting to suppress drowsiness.

(2) The working principle of the subsystem:

Melatonin and driver drowsiness

Under road lighting conditions, if the content of blue light in the radiation spectrum of the lighting source is high, the pupil of the human eye will shrink a lot, and it will have a better visual effect. it is good.

The blue component of the spectrum can effectively inhibit the production of melatonin, with a peak sensitivity of about 465nm in the circadian system. Blue light stimulates nerve junction cells on the retina, which increases the concentration of cortisol in the human body, and inhibits the secretion of melatonin, which can make people feel refreshed. In the low color temperature light environment, the blue light component is greatly reduced, which causes the concentration of cortisol in the human body to decrease and the secretion of melatonin to increase, so people feel tired and need to rest.

Intervene through lighting to interfere with the driver's sense of fatigue, restrain the driver from falling into drowsiness, and make him awake and focus on the road ahead. The traditional street lighting system has no function of suppressing sleepiness due to visual fatigue.

(3) Subsystem design:

The light sources are respectively set in the forward and reverse directions of the driving direction, and the blue light, green light and purple light are respectively generated by the white light source and the acrylic color lens.

6. About the low light level warning lighting subsystem

(1) Subsystem function: provide fault warning lighting.

(2) The working principle of the subsystem:

The way for the multi-dimensional lighting system to warn the driver of the failure of the vehicle ahead is to make the street lights flash continuously. When the driver drives the car into the emergency stop zone and stops due to vehicle failure, he can quickly find the manual wireless remote control alarm button on the light body on the right side fence of the road. After pressing the button, all the street lights at a distance of 100m from the button to the direction of the oncoming vehicle will flash red to alert the oncoming car, indicating that there is a car failure in front, thus reminding the driver of the rear car to slow down.

In principle, we know that under non-photopic conditions, the recognizability of dynamically flashing objects is much higher than that of stationary objects with the same brightness. Since there are about 20 street lights with red flashing on the left and right at a distance of 100m, this kind of alarm method that sends a warning to the driver of the motor vehicle behind in a cluster active flash mode is more eye-catching than a simple triangular warning sign placed still on the ground. It greatly improves the reliability of the identification of the driver of the motor vehicle behind and increases the safety of driving at night.

(3) Subsystem design:

Remote control alarm flashing subsystem - manual wireless remote control alarm subsystem is located on the right side of the road. There are about 100 street lights with red flashing left and right at a distance of 100m. After pressing the manual wireless remote control alarm button on the lamp body, the button to All street lights at a distance of 100m in the direction of oncoming traffic will flash red to warn the oncoming traffic, see Figure 29.

This warning lighting subsystem is independently controlled and powered independently, and is usually not turned on and does not consume power.

7. About the low-level vertical lighting subsystem

(1) Subsystem function: provide rescue indication lighting.

(2) The working principle of the subsystem:

When an accident occurs on the road and needs to be rescued and the direction of the accident is required to be indicated, a beam of vertical light with strong penetrating power can form a local landmark at the accident site and clearly indicate the accident direction in the air.

There are various methods for providing indicator lighting. The above-mentioned vertical lighting method is simple and reliable, especially in areas with poor mobile phone signals and haze days, vertical lighting becomes the only choice.

(3) Subsystem design:

The function of the vertical lighting subsystem is to provide indicator lighting, and when an accident requires rescue, it will clearly mark the direction of the accident in the air. The light source and lamps used for vertical lighting, the irradiation direction is perpendicular to the road, the installation distance is not more than 2Km, the power is not more than 10W, the light distribution is symmetrical, the irradiation range is 87° to 93° (see Figure 30) The irradiation space is the road Above, there is no intersection with other lighting components, the light color of the light source is single color or multiple light colors; the operation mode is not open at ordinary times, and only manually opened in special needs.

8. About the low light level prompt lighting subsystem

(1) Subsystem function: prompts the abnormal road ahead.

(2) The working principle of the subsystem:

The low-level street light system is installed on the guardrail or concrete baffle of the road side measurement. When the street light projects light to the side measurement, the guardrail or concrete baffle can be illuminated. Different light colors of light sources can be used to obtain colored reflected light. .

Using the color reflection light changes on the guardrails or concrete baffles on the side of the road, it can prompt the special road conditions ahead. For example, during normal road sections, the lamp body radiates blue, green and purple light upwards and downwards to help the driver suppress drowsiness and improve concentration. At this time, the front view of the driver is presented with a clear road with a warm color in the middle and a gradual reflection of the cool-colored concrete baffles on both sides. When there are special road conditions such as sharp bends and downslopes ahead, the road lighting remains unchanged, but the reflections of the two concrete baffles change from cool colors to higher saturation red or other warm colors to remind the driver: Special road conditions occurred; when the road returned to normal, the street lights also returned to cool colors.

(3) Subsystem design:

Projecting light to the lower part and the upper part of the lamp body respectively, so that the driver can see it easily. Blue indicates normal road conditions, the same light color as the drowsiness suppression lighting subsystem, red indicates frequent accidents on the road ahead, orange indicates steep slopes ahead, and yellow indicates road narrowing.

On the bridge railings, red, orange, yellow and blue railings can be seen in the distance, which not only indicate special road conditions, but also have the function of landscape lighting.

9. About the low-level landscape lighting subsystem

(1) Subsystem function: provide landscape lighting.

(2) The working principle of the subsystem:

In some special road sections, such as bridges, street lamps are also required to provide landscape lighting functions.

(3) Subsystem design:

The illumination direction of the subsystem is toward the lower part of the lamp body.

10. About the intelligent control system

(1) System functions: provide automatic inspection of street lamp status and automatic switching of lighting modes.

(2) The working principle of the system:

Adaptive control of street light switch and operating power, automatic conversion of normal weather and extreme weather modes - rain probe, haze probe, counting probe

(a) Determine the street light switch and operating power

Replace the control mode of "brightness and time" with the control mode of "brightness and flow", change the operation power conversion mechanism of "time segment", and use the street light platform to load the traffic flow counting system at the appropriate position of the road, and measure it by the counting probe Real-time traffic flow, and then perform energy-saving control according to the real situation of sky brightness and traffic flow to determine the operating power of street lights.

"Brightness and flow" control is more scientific and more energy-saving than the current energy-saving control method.

(b) Automatic switching between normal weather and extreme weather lighting modes.

(3) Adaptive adjustment of lighting mode:

Adaptive adjustment of lighting mode means that as long as the test result of road reflectivity is input to the control system, the control system can automatically adjust the power distribution between the forward lighting source and the reverse lighting source according to the result.

(4) Adaptive conversion of operating mode:

Street light adaptive control includes automatic control of street light switches and operating power, and automatic conversion hardware according to weather conditions, including rainfall, haze, traffic flow sensors, host and multi-channel controllers. The control object is to determine the optimal turn-on time and street light dimming according to traffic flow statistics and sky brightness.

Determine the best lighting strategy and control measures according to rainfall and haze conditions

1) Lighting strategy for normal days: improve visibility, green energy saving.

Control measures: turn on the reverse/forward lighting subsystem, turn on the forward lighting subsystem, turn off the lateral lighting subsystem, turn on the drowsiness suppression lighting subsystem, activate the warning lighting subsystem and the rescue lighting subsystem.

2) Lighting strategy in rainy and snowy days: reduce road glare and display obstacles and road contours ahead.

Control measures: turn off the reverse lighting subsystem, turn on the forward/forward lighting subsystem, turn on the lateral lighting subsystem (only 1/2 of the power), turn on the drowsiness suppression lighting subsystem, activate the warning lighting subsystem and the rescue lighting subsystem .

3) Lighting strategy for hazy days: display the obstacles ahead and the road outline.

Control measures: turn off the reverse lighting subsystem, turn off the forward/forward lighting subsystem, turn on the lateral lighting subsystem (full power), turn on the drowsiness suppression lighting subsystem, and activate the warning lighting subsystem and rescue lighting subsystem.

(5) Control system:

1), system composition:

Hardware: host computer (control host), concentrator, LED power supply (dimming), LED guardrail light, power distribution equipment;

Software: PC control software, concentrator software

Overall system control: the host computer issues commands (with UID), and the relevant concentrator accepts the commands, processes the commands, forwards them to the control node, controls the power supply dimming, and controls the guardrail lamps in 4 groups to execute actions;

Section control circuit: The electric control cabinet of each section is equipped with a concentrator to control the LED guardrail lights in this section;

Control implementation: each concentrator has a unique identity code UID, and each control node has a unique identity code UID; when the host computer issues a switch or dimming command, the command (with UID) is sent to the corresponding device through GPS/optical fiber. The concentrator, the concentrator decomposes the command and forwards it to the control node that needs to be controlled, and the control node responds to the corresponding action according to the command;

Realization of zone, group and point control:

Zone control: each zone is controlled by a concentrator, as long as a zone control command is issued to the concentrator, all lamps in the zone will execute the same command;

Group control: It can be divided into groups in the area, and the upper computer sends instructions to the group, and the group executes the instructions;

Point control: the upper computer sends an instruction to a single lamp (UID), and the lamp executes the instruction;

The realization of dimming: there are several levels of dimming commands (percentages of different values) on the host computer, and there is control software inside the LED power supply. light), the software controls the power supply hardware to execute corresponding commands to implement all instructions including dimming;

Realization of control: The controller is designed with 4 groups of relay outputs, corresponding to the control of the 4 groups of lights in the guardrail light, which can realize the functions of single point, group, full open and full light. See Figure 29 for the control dimming module.

11. About the smart city subsystem

(1) Subsystem function: Provide digital terminal platform.

(2) The working principle of the subsystem:

All signals and instructions collected by the platform are all connected to the city's big data center, stored in the cloud, and then shared by relevant functional departments according to their authority. It can provide information to the following departments: 1. Street lamp operation management 2. Road traffic management 3. Urban public security and environmental management. Main body of management: Urban Traffic Monitoring Center, Public Security Department, Meteorological Department, Environmental Protection Department, and Urban Disaster Relief Command Department.

Air quality measurement

Collect data on various traffic pollutants and O ₂ N, SO ₃ and PM 2.5, and report them periodically for early warning and alarm.

1), meteorological rainfall measurement

Environmental temperature and humidity measurement sensor, rainfall and water depth sensor subsystem, measure the environmental temperature and humidity level, collect data and report it periodically, early warning and alarm.

2), car charging

When a vehicle cannot be started due to battery problems, the 12V power supply can directly provide ignition power for the car to start.

3), WIFI hotspot

At present, WIFI coverage has been achieved or will be achieved on public transportation such as buses and subways in the city, but a large number of non-bus vehicles, which account for more than 90% of the total, have not been covered.

4), noise measurement

Real-time detection, forensics, alarm and recording of municipal road noise.

5), wind power, photovoltaic integration

Axial-flow windmills have small footprint and stable rotational speed, and can be used as wind turbines; monocrystalline silicon panels have high conversion efficiency and can be placed on highway guardrails to supply power to street lights in a wind-solar complementary manner together with axial-flow windmills.

(3) Subsystem design:

1), street lamp operation monitoring subsystem

a) The system has the function of automatic timing control: according to the geographic location (latitude and longitude) of the city and the weather statistics of the four seasons of the year, construct a timetable for opening and closing, and calculate the time of switching the lights on and off every day in the cycle time (including : daily, holiday, weekend light switching time, etc.), downloaded to each street light control terminal for automatic execution; Temporary operation control function: In case of temporary special circumstances, such as major events and maintenance inspections, temporary Temporary control strategy, the system performs temporary control according to the temporary strategy; Immediate operation function: In unexpected situations, such as sudden deterioration of weather conditions, on-site operation and maintenance, etc., the street lights in designated areas and road sections are monitored through the background. control.

b) Automatic inspection subsystem of street lamp running status: The system remotely measures the voltage and current value of street lamp in real time through the power carrier line, and finds abnormality. When the deviation value exceeds the preset threshold range, an alarm signal is triggered. The system also has a single-point control function, a remote measurement function (telemetry) function, and a remote alarm function, which can handle overvoltage and overcurrent alarms; abnormal switch lights alarm; lighting rate is lower than rated value alarm; terminal control cabinet is illegal Open alarm; line pole door illegally open alarm; communication failure alarm; cable open circuit and short circuit alarm; alarm record and statistics (see Figure 32).

2), urban road monitoring subsystem

(a) Traffic and road conditions, accidents, and security monitoring: video surveillance of street lights and GPS positioning of street lights, install industrial video surveillance cameras on street lights in key road sections, and periodically report various work status information. All video heads can receive the unified operation of the background monitoring system and use interactive video to monitor traffic conditions, traffic accidents, and security multi-directional video recording.

(b) Display lighting: The basic principle of display lighting is: In a digital city, the intelligent traffic command system needs to provide the driver with road traffic information in a timely manner, and issue the traffic command department's instructions to the driver, whose instructions can pass audio signals or video signals. Conduction. The function of the display lighting subsystem is to convey real-time video signals, display graphic information, and guide the vehicle to drive in an orderly manner; the light sources and lamps used for display lighting are LED or OLED screens or dot matrix, and the illumination direction is oblique to the driving direction of the lane; The traffic command department uses remote control to start and control the operation (see Figure 33).

3), urban environment monitoring subsystem

(a) Air quality and noise measurement: use GPS system positioning, install air quality and noise measurement sensors at air quality and noise monitoring nodes, test and collect air PM2.5, PM5, PM10 and harmful gas content and other related data, through WIFI The network is uploaded to the 3G/GPRS gateway, and the 3G/GPRS gateway is uploaded to the background monitoring platform system to realize real-time detection, evidence collection, alarm and recording of various traffic pollutants and municipal road noise.

(b) Meteorological and rainfall measurement: Install ambient temperature and humidity measurement sensors, rainfall and water depth sensor subsystems at urban meteorological monitoring nodes to measure ambient temperature and humidity levels, and periodically report data after collecting data for early warning and alarm.

(c) Landscape lighting: The function of the landscape lighting subsystem is to provide landscape lighting without affecting the driving safety, form the urban night landscape elements, and create a festive atmosphere. The landscape lighting subsystem is mainly used in or bridges, and the subsystem is integrated with the above functional lighting subsystems to form an integrated luminaire. It operates independently and is controlled by the urban management department alone or through the traffic command department.

(d) Car charging: When a vehicle cannot be started due to battery problems, the 12V power supply can directly provide ignition power for the car to start.

(e) WIFI hotspots: At present, WIFI coverage has been achieved or will be achieved on public transportation such as buses and subways in the city, but a large number of non-bus vehicles, which account for more than 90% of the total, have not been covered. In the municipal road system in the middle of the lamp position, a visible light communication technology platform is established to realize the WIFI coverage of urban roads.

4), street lamp photovoltaic integrated subsystem

In the current road lighting mode, the single lamp power (HID) lamp is 250W, the (LED) lamp is 150W, and the lamp distance is 30m to 40m, which reflects the centralized lighting. Under the condition of centralized lighting, with the current photovoltaic technology, it is unreliable to use solar energy as the only power supply. In fact, in order to improve reliability, the photovoltaic integrated lighting of highways and municipal roads currently put into practice is basically powered by dual power sources (220V AC and photovoltaic or wind-solar complementary), which greatly increases investment, which is only for demonstration purposes. , and has no commercial value, which is also an important reason why the road photovoltaic integrated lighting has not been fully promoted.

An important achievement of the multi-dimensional road lighting system is to reduce the single lamp power to 2-3W and the lamp distance to 2-8 meters. Compared with the current road lighting system, distributed and miniaturized lighting makes the single lamp power of the multi-dimensional road lighting system only 1% to 2% of the centralized lighting method, and the photovoltaic cell area and storage components of a single lamp are greatly reduced. Small, the scope of influence of a single lamp failure is also greatly reduced, which can improve the reliability of power supply, thus making it possible to integrate street lamps with solar energy as a single power supply.

Optionally, in this embodiment, an induced lighting subsystem may also be added to the lighting street lamp.

12. About the induced lighting subsystem:

Subsystem function: Provide visual induction

How the subsystem works:

In the multi-dimensional road lighting system, the lamp body of the street lamp installed at the low lamp position is orange-red. The engineering plastic is used as the lamp body material of the multi-dimensional road lighting system street lamp, and an appropriate amount of phosphor is added to the shell; if the metal material is used as the lamp body material of the multi-dimensional road lighting system street lamp, the fluorescent material is sprayed on the outer surface of the lamp casing.

Subsystem Design:

During normal power supply, the orange-red lamp body with phosphor added is brighter, and two rows of bright spots are formed on the side of the road, showing the direction of the road.

In the event of a sudden power failure, the traditional street lights will be completely dark, and the driving safety will be greatly reduced. It can still emit light under the illumination of the headlights, which increases the guidance and improves the driving safety in the event of a sudden power failure.

2. Layout of lighting subsystem

1. Lighting subsystem layout

Reverse lighting: first light source, sealed first LED lamp beads + lens;

Forward lighting: second light source, sealed second LED lamp beads + lens

Electronic equipment compartment: drive circuit and control equipment

2. Elevation layout of lighting subsystem

There are mainly forward lighting outlet, horizontal lighting outlet, warning lighting outlet, vertical lighting outlet, street lamp positioning screw hole, drive and control equipment compartment.

Please refer to FIG. 34 to FIG. 39 , which illustrate the structure of a street lamp body provided in this embodiment. The lamp body is provided with a plurality of light sources, a light outlet for light to exit, a cover plate 1 with a color on the top, and a top plate fixing screw hole 13 . The interior of the cover is also provided with a positioning groove 12, a bin 9 for fixing the electronic circuit and equipment in the lamp body, and a baffle 11 for preventing mutual interference between the light sources and preventing reverse direct viewing of glare. The light sources shown in the figure include the reverse lighting light source 7, the forward lighting light source 8, and the installation positions 16 of the lateral and warning lighting light sources. The light outlet includes a forward lighting light outlet 2, a lateral lighting light outlet 3, a warning lighting light outlet 4, a reverse lighting light outlet 5 and a reverse lighting light baffle 6. The partition includes forward lighting, lateral lighting, and warning lighting partition 10 . The lamp body in the figure also shows the rear light transmission port 14 and the fixing screw hole 15 for the lamp body.

In this embodiment, the light sources and control elements of the lighting subsystems at low lamp positions are integrated into a lamp body to form a solid street lamp, which realizes the substantiation and integration of the lighting subsystem. The street light features glare-free, high lighting efficacy and adaptive control.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (9)

1. A multi-dimensional composite light distribution street lamp is characterized in that, comprising a lamp body and a plurality of lighting subsystems of different dimensions and an intelligent control system arranged on the lamp body; the installation height of the lamp body is lower than 1.2 meters, The light projection axis of the lighting subsystem is one or more directions; the lighting subsystem adopts optical light distribution and structural light distribution, the optical light distribution adopts free-form surface lenses and microstructures, and the structural light distribution adopts The lamp body structure guides light and cuts light, and the intelligent control system controls the switching and operating power of all lighting subsystems according to the traffic flow statistics and sky brightness conditions it receives, and automatically converts lighting subsystems according to weather conditions; The lighting subsystems of different dimensions include a low-light-level forward lighting subsystem. The installation height of the light source of the low-light-level forward lighting subsystem is lower than the eye level of the driver of the motor vehicle, and the illumination direction is the same as that of the vehicles in the illuminated lane. The direction is the same, and the illumination space is the space below the height of the lamp body and the road surface; multiple lighting subsystems with different dimensions also include a low-light-level forward lighting subsystem, and the light source installation height of the low-light-level forward lighting subsystem is the same as that of the machine. The height of the eye-level line of the motor vehicle driver is equivalent, and the illumination direction is the same as the driving direction of the illuminated lane to illuminate the front space. 2 . The multi-dimensional composite light distribution street lamp according to claim 1 , wherein the projection beam angle of the lighting subsystem is less than 10°, and the ratio of the wheelbase to height of the projection light is greater than 10. 3 . 3 . The multi-dimensional composite light distribution street lamp according to claim 1 , wherein the lighting subsystem includes a normal mode and an energy-saving mode, and the normal mode is always fully on during normal light-on time, and the energy-saving mode is 3 . For dimming on the basis of normal mode. 4. The multi-dimensional composite light distribution street lamp according to any one of claims 1 to 3, wherein the light source light-emitting surface of the low-lamp-position forward lighting subsystem intercepts light, and at the same time, the stray light is reflected along its lower edge. face is truncated. 5 . The multi-dimensional composite light distribution street lamp according to claim 4 , wherein the plurality of lighting subsystems of different dimensions further comprise a low-light level reverse lighting subsystem, and the low-light level reverse lighting subsystem The irradiation direction is opposite to the driving direction of the irradiated lane, and the irradiation space is the space below the height of the lamp body and the road surface; the light source emitting surface of the low-light position reverse lighting subsystem intercepts light, and at the same time, its lower edge along the stray light reflecting surface is blocked. truncate. 6 . The multi-dimensional composite light distribution street lamp according to claim 4 , wherein the plurality of lighting subsystems with different dimensions further comprises a lateral lighting subsystem, and the illumination space of the lateral lighting subsystem is the lamp. 7 . The space in front of the body is closed in normal weather and only turned on in haze weather; its operating mode is fully open in haze weather and automatically switches with the lighting subsystem; the light source of the horizontal lighting subsystem is located in the hollowed see-through lamp Inside the body, its light outlet intercepts light. 7 . The multi-dimensional composite light distribution street lamp according to claim 4 , wherein the plurality of lighting subsystems of different dimensions further comprise a warning lighting subsystem, a warning lighting subsystem, a landscape lighting subsystem, and a prompt lighting sub-system. 8 . system and vertical lighting subsystem; The light sources of the alert lighting subsystem are white, blue, green, purple or cold light sources with a color temperature higher than 5000K, arranged in a single color or alternately; The warning lighting subsystem is a remote control warning flashing subsystem, and a manual wireless remote control warning button is arranged on the lamp body. After pressing the warning button, the warning lighting subsystem is turned on; the warning lighting subsystem is separate Control, separate power supply, usually not open; The landscape lighting subsystem projects light toward the bottom of the lamp body; The prompt lighting subsystem projects light to the upper part and the lower part of the lamp body respectively, the illumination direction is perpendicular to the road surface, the illumination space is below the lamp body, and the emitted light has at least two different colors; The irradiation direction of the vertical lighting subsystem is perpendicular to the road surface, and its irradiation space is below the lamp body and above the road surface; its irradiation direction has no intersection with the components of other lighting subsystems; its operating mode is normally not on, Manual activation only in special cases. 8. The multi-dimensional composite light distribution street lamp according to claim 4, wherein the multi-dimensional and multi-layer lighting street lamp further comprises a smart city subsystem, and the smart city subsystem comprises a street lamp operation monitoring subsystem, an urban road Monitoring subsystem, urban environment monitoring subsystem and street lamp photovoltaic integrated subsystem. 9 . The multi-dimensional composite light distribution street lamp according to claim 1 , wherein the upper cover of the lamp body is designed as a ridge type, which has the function of preventing snow accumulation; Dust accumulation function; each electrical part of the lamp body is designed as a waterproof unit reaching IP67, with independent waterproof function.

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