CN201180920Y

CN201180920Y - LED road lamp

Info

Publication number: CN201180920Y
Application number: CNU2008200070076U
Authority: CN
Inventors: 朱伯明; 陈海军; 孙建江
Original assignee: NINGBO LIAOYUAN LIGHTING CO Ltd
Current assignee: NINGBO LIAOYUAN LIGHTING CO Ltd
Priority date: 2008-02-27
Filing date: 2008-02-27
Publication date: 2009-01-14
Anticipated expiration: 2018-02-27

Abstract

The utility model relates to an LED lamp which is used for roads, tunnels, etc. and requires high uniformity of illumination. The LED lamp comprises a light distribution system, a heat dissipation device, a lamp body, a drive circuit and a lamp mounting adjustment mechanism. LED lighting units are arranged on one surface of the light distribution system; the axial direction of each LED lighting unit points to each target region; the LED lamp is provided with an optimum optical system required by the light distribution of road illumination; a plurality of LED lighting units are driven and powered by the drive circuit depending on the circuits of the LED lighting units after the LED lighting units are connected in series and in parallel; the heat dissipation device is arranged on the other surface of the light distribution system to ensure that each LED lighting unit works at the normal temperature; and the mounting adjustment mechanism and a horizontal calibration device can solve the problem of light ray offset because the proper position of the lamp during construction and installation is not reached.

Description

LED street lamp

Technical Field

The utility model relates to a street lamp in illumination field especially relates to a LED street lamp that needs large tracts of land, illuminance and illuminance degree of consistency all to be required higher such as suitable main road, inferior main road. The LED light-emitting units are arranged on one surface of the light distribution system, the axis direction of each LED light-emitting unit points to each area of an illumination target, the optimal optical system required by road illumination light distribution is provided, the plurality of light-emitting units are controlled by a driving circuit in a shunt way to supply power after being connected in series and in parallel, the radiator is arranged on the other surface of the light distribution system, the LED light-emitting units are guaranteed to work at normal temperature, the problem of uneven light distribution caused by inaccurate positions during lamp construction and installation can be solved through the installation adjusting mechanism, the LED light-emitting units become a novel design with practicability and progress, and the LED light-emitting units are suitable for wide popularization and application in the industry.

Background

Although the existing LED street lamps have the characteristics of long service life, good light color and the like compared with the conventional lamps, the required illuminance and light distribution uniformity for road illumination under the same street lamp arrangement condition cannot meet the requirements, for example, in the lamps disclosed in chinese patent No. 200520062069.3 or 200510112612.0 or 20071002565.X, one or more LED units are adopted to project light through simple array arrangement, but when the LED light sources with the same optical characteristic are irradiated to a certain direction or area in parallel, the local area brightness is too high, which not only affects the uniform illumination effect on the road, but also cannot make the light emitted by the light sources obtain efficient utilization. Because the street lamps have certain range requirements for height, spacing, inclination angle, road effective width and the like during installation, and because most of the existing road lamps are installed near the side line of the road, the light emitted by the lamps is required to cover the whole road surface and provide local illumination within 5 meters around the road, the lamps disclosed by the Chinese patent (patent number 200520062069.3 or 200510112612.0 or 20071002565.X) do not fully consider the characteristics of light distribution required by the road lamps, so that the overall uniformity is reduced.

Therefore, it is obvious that the above-mentioned conventional LED street lamp still has inconvenience and defects in structure and use, and further improvement is needed. In order to solve the problems of the LED street lamps, related manufacturers have tried to solve the problems without diligent attention, but it has not been known that suitable designs are developed and completed for a long time, and general products have no suitable structure to solve the problems, which is obviously a problem that related manufacturers want to solve. Therefore, how to create a new structure LED street lamp with a large illumination area and uniform illumination light according to the road light distribution characteristics is one of the important research and development issues, and is also an object of great improvement in the industry at present.

In view of the above-mentioned defects of the existing LED street lamp, the inventor of the present invention has made extensive practical experience and professional knowledge for many years based on the design and manufacture of such products, and has actively studied and innovated in cooperation with the application of theory, so as to create a new structure of LED street lamp, which can improve the existing LED street lamp and make it more practical. Through continuous research and design, and after repeated trial production of samples and improvement, the utility model is finally created to ensure practical value.

Disclosure of Invention

An object of the utility model is to overcome the defect that current LED street lamp exists, and provide a novel LED street lamp of structure, the technical problem that solve is to street lamp lamps and lanterns installation quantity, height, power, average illumination, these parameters such as the overall degree of consistency have this problem of more harsh requirement, make the directional luminous and the controllable characteristics of power of its full play LED light source, make corresponding adjustment according to the change of road conditions, illuminate the road surface effectively, reach even light distribution, can reduce the power of the whole consumption of LED street lamp under the condition of the illumination level that satisfies the road lighting requirement and the degree of consistency. Thereby being more practical and having industrial utilization value.

The purpose of the utility model and the technical problem thereof are realized by adopting the following technical scheme. According to

The utility model provides a LED street lamp, including grading system, heat abstractor, lamp body, drive circuit, lamps and lanterns installation guiding mechanism. The light distribution system is fixed on the lamp body, the driving circuit is installed in the cavity of the lamp body, and the driving circuit is connected with the LED light emitting unit of the light distribution system through a lead. Each LED light-emitting unit of the light distribution system respectively irradiates to a point on each area of a road surface, and each incident point corresponds to each LED light-emitting unit on the LED light distribution system. The optical axis direction, the luminous intensity and the luminous angle range of each LED luminous unit are determined according to the distance from the LED luminous unit to an incident point and the incident angle, light rays incident to each small area form a far light area, a middle light area and a near light area, the corresponding LED luminous units form a plurality of lighting modules according to the incident angle and the luminous intensity, and the lighting modules are fixed on the corresponding positions of the light distribution system, so that each LED luminous unit has an optimal optical system required by road lighting light distribution.

The purpose of the utility model and the technical problem thereof can be further realized by adopting the following technical measures.

In the LED street lamp, an included angle between a central axis of at least three LED light emitting units of the light distribution system and a central axis of each adjacent LED light emitting unit is 5 ° to 40 °.

In the LED street lamp, the light distribution system at least includes an LED lighting unit formed by three light intensities and corresponding beam angles.

The purpose of the utility model and the technical problem thereof are solved and the following technical scheme is adopted to realize. The basis the utility model provides a LED street lamp, wherein light distribution system in have two LED luminescence units at least respectively towards lamps and lanterns both sides along the longitudinal direction of road to shine towards the road surface region farthest away from this lamps and lanterns, light distribution system in have a LED luminescence unit at least to shine towards near the lamp near the nearest road surface region promptly lamp apart from this lamps and lanterns.

The purpose of the utility model and the technical problem thereof are solved and the following technical scheme is adopted to realize. The foundation the utility model provides a LED street lamp, wherein grading system have two LED light emitting unit at least to shine respectively towards lamps and lanterns both sides along the vertical direction of road, on to the road surface middle zone.

In the LED street lamp, an included angle between a central axis of the LED light emitting unit which irradiates the road surface area farthest from the lamp and the road surface is 15 ° to 40 °, and the light emitting intensity is the largest among all the LED light emitting units; the central axis of the LED light-emitting unit irradiating towards the road surface area closest to the lamp, namely the vicinity of the lower point of the lamp, forms an included angle of 55-90 degrees with the irradiation plane, and the light-emitting intensity is the smallest in all the LED light-emitting units.

In the LED street lamp, the LED light emitting units respectively irradiating towards the middle area of the road surface along the longitudinal direction of the road towards the two sides of the lamp have an included angle of 40 ° to 55 ° between the central axis and the road surface, and the light emitting intensity is medium in all the LED light emitting units.

The purpose of the utility model and the technical problem thereof are solved and the following technical scheme is adopted to realize in addition. The foundation the utility model provides a LED street lamp, aforementioned grading system are used for fixed LED light-emitting unit's one side to be equipped with the reflector panel, and the reflector panel is equipped with the trompil with the corresponding position department of LED light-emitting unit.

In the LED street lamp, the light outlet surface of the light distribution system is provided with the transparent curved surface or the transparent plane cover.

The purpose of the utility model and the technical problem thereof are solved and the following technical scheme is adopted to realize in addition. The foundation the utility model provides a LED street lamp, wherein the back of grading system be equipped with heat abstractor.

In the LED street lamp, the heat dissipation device is configured such that the separated heat dissipation modules are installed on the back surface of the light distribution system and correspond to the LED light emitting units, respectively.

The heat dissipation device and the light distribution system are cast into a whole.

The LED street lamp is characterized in that the light distribution system is provided with a heat dissipation breathing hole.

In the LED street lamp, the driving circuit has at least three independent constant current outputs for respectively controlling the respective LED light emitting units.

In the LED street lamp, the driving circuit automatically switches the power supply to control the output power after receiving the illuminance signal or the time signal or other control signals.

In the LED street lamp, the lamp body is provided with the mounting adjustment mechanism, and the elevation angle of the lamp relative to the irradiation surface is adjusted to-15 ° - +15 ° by adjusting the fixing position of the lamp mounting seat 51 and the mounting tube. The mounting tube is fixed at any position in the mounting seat according to requirements so as to obtain different irradiation elevation angles.

In the LED street lamp, a leveling platform for determining a mounting inclination angle of the lamp is disposed on the upper portion of the lamp body.

Can know via the aforesaid, the utility model discloses a require higher road to the illumination degree of consistency, LED lamps and lanterns that occasions such as tunnel used, it is by the grading system, heat abstractor, the lamp body, a drive circuit, lamps and lanterns installation guiding mechanism constitutes, the one side installation LED luminescence unit of grading system, each region of the directional illumination target of each LED luminescence unit axis direction, and the required best optical system of road lighting grading has, a plurality of luminescence unit cluster is controlled the power supply by drive circuit shut after connecting in parallel, the another side of grading system is equipped with the radiator, guarantee that each LED luminescence unit works under normal temperature, can overcome the inhomogeneous problem of luminosity distribution that the position inaccuracy caused when installing by lamps and lanterns construction through installation guiding mechanism.

The foundation the utility model provides a LED street lamp, in order to satisfy road surface illuminance and degree of consistency requirement, need design a LED grading system. The area to be illuminated is divided into a plurality of small areas, the central incident point of light is set in each small area, each incident point corresponds to each LED luminous unit on the LED light distribution system, the optical axis direction, the luminous intensity and the luminous angle range of each LED luminous unit are determined according to the distance from the LED luminous unit to an incident point and the incident angle, light rays incident to each small area form a far light area, a middle light area and a near light area, the corresponding LED luminous units form a plurality of lighting modules according to the incident angle and the luminous intensity, the lighting modules are fixed to corresponding positions of the light distribution system, the incident angle of the far light area is generally between 50 degrees and 75 degrees, the incident angle of the middle light area is generally between 35 degrees and 50 degrees, the incident angle of the near light area is generally between 0 degrees and 35 degrees, and the mutual ratio of the maximum light intensity of the LED luminous units irradiating different areas is about 2 times.

The LED street lamp light distribution system is suitable for various road lighting environments, the road surface is divided into three types of large, medium and small according to the current road grade and the related specified division of road lighting, the incidence angle and the incidence point of each LED light-emitting unit of the light distribution system can be changed within a certain range according to the size of the illumination area, the adjustment is carried out within the angle range to form the light area as before, the required total luminous flux is changed due to the change of the illumination area, the total luminous flux is reduced as long as the power of each LED light-emitting unit is correspondingly reduced, but the light distribution characteristics are not changed, so the LED street lamp light distribution system can be suitable for various road lighting.

The LED street lamp light distribution system is arranged on the installation frame of the lamp body, the light outlet surface is sealed by the curved surface or the plane light-transmitting cover, the radiator at the back of the light distribution system directly disperses heat to the outside, the effective width and the installation interval of a road applied by the LED light-emitting unit with the characteristic of directional light emission are different, and the lamp installation adjusting mechanism is arranged on the lamp body, so that the illumination coverage range of the LED street lamp can be well controlled, and the phenomenon of light deviation caused by the fact that the LED street lamp is not installed in place can be eliminated.

In order to reduce the consumption of lamps and lanterns total energy, can add control signal according to factors such as traffic density, period, ambient light in drive circuit, the utility model discloses a LED luminescence unit is controlled by drive circuit after through wire series-parallel connection, and output current adjusts according to control signal in certain extent. Due to the adoption of the light distribution system, when the illumination requirement is reduced on the same road section, the output current is reduced by reducing the input power, the luminous flux of the LED light-emitting unit is reduced, the total energy consumption is reduced, and the illumination uniformity is not reduced.

Compared with the prior art, the utility model obvious advantage and beneficial effect have. Borrow by above-mentioned technical scheme, the utility model provides a LED street lamp can reach comparable technical progress nature and practicality to have the wide use value in the industry, it has following advantage at least:

1. the utility model provides a LED street lamp, utilize the grading system of unique design to make each LED luminescence unit shine respective regional way, light that the LED luminescence unit sent throws to each region on illumination road surface, control all luminescence unit's of LED light beam angle and luminous intensity, the light that whole grading system sent accords with the requirement of road lighting, the general illuminance degree of consistency is more than 0.4, the vertical degree of consistency is more than 0.6, thereby can reduce cost by a wide margin, economic benefits is improved, in practicality and the cost effectiveness of using, it is required to accord with industrial development completely really, industrial utilization value has fairly.

2. The utility model provides a LED street lamp, according to LED street lamp mounting height and the distance and the quantity between lamps and lanterns, can adjust corresponding LED luminescence unit light beam angle, incident angle and luminous intensity, the light that sends LED luminescence unit is concentrated and is projected on the road surface that needs the illumination, improves the effective utilization ratio of light;

3. the LED street lamp provided by the utility model can solve the heat dissipation problem of the LED light source by arranging the heat dissipation device on the other side of the mounting seat;

4. the utility model provides a LED street lamp, utilize the drive circuit of independent passageway to carry out output control to LED luminescence unit, through plus control signal, realize controllable to LED street lamp total power, do not influence the change of illumination degree of consistency;

5. the utility model provides a LED street lamp, which is provided with an angle adjusting mechanism when an LED lamp is installed, and is suitable for different road lighting widths;

6. the utility model provides a LED street lamp has still set up the level calibrating device when the installation of LED lamps and lanterns, avoids the light skew problem because of the installation is not in place aroused.

7. The utility model discloses can reach practical efficiency really, not only convenient to use does not need the loaded down with trivial details procedure, and the processing that the structure takes shape is more simple and convenient moreover, accords with cost-effectiveness, and has industrial value of utilization really, is suitable for industry and extensively uses widely.

8. The utility model discloses a structure does have technical progress more than current LED street lamp, and its unique structural feature and function also far from current LED street lamp can compare, and current LED street lamp has the multinomial efficiency of promoting, and has technical progress.

9. The utility model discloses more be suitable for the practicality in the use, more can accord with the user to the demand of LED street lamp product, can give the better selection of consumer, and can promote its overall efficiency nature by a wide margin to more be suitable for the practicality.

To sum up, the utility model discloses a novel LED street lamp has illuminated the road surface effectively, reaches even light distribution, can reduce the power of the whole consumption of LED street lamp under the condition of the illuminance level and the degree of consistency that satisfy the road lighting requirement. The utility model has the advantages of many above-mentioned advantages and practical value, it no matter all has great improvement on product structure or function, has apparent progress technically to produced good-purpose and practical effect, and more current LED street lamp has the outstanding multinomial efficiency of promoting, thereby be suitable for the practicality more, and have the wide use value of industry, honestly be a novel, progress, practical new design.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a front view of embodiment 1;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a left side view of FIG. 1;

FIG. 5 is an enlarged view of the level platform;

FIG. 6 is a schematic view of the light emitting unit shining on a road surface;

fig. 7 is a light distribution graph of the first embodiment;

FIG. 8 is a road surface isophote map of the first embodiment;

FIG. 9 is a block diagram of a drive circuit;

FIGS. 10a-10b are schematic structural views of the second embodiment;

FIGS. 11a-11b are schematic structural views of a third embodiment;

FIG. 12 is a light distribution graph of the second and third embodiments;

FIG. 13 is a road surface isophotograph of the second and third embodiments;

in the figure:

1: light distribution system

11a, 11b, 11 c: light emitting unit

1a, 2a, 3 a: included angle between central axis of light-emitting unit and road surface

12: light-transmitting cover

13: the reflector 13 a: opening of reflector

2: the heat sink 21: breathing hole

3: lamp body

4: driving circuit

41 power supply input

411: and (3) inputting 412: filtering

413: rectification 414: PFC

415: filtering 416: light induction

417: delay adjustment 418: intelligent control

42: constant current module

421: constant current module 422: constant current module

423: a constant current module 424; constant current module

43: LED unit

431: the LED module 432: LED module

433: the LED module 434: LED module

5. Installation adjustment mechanism

51. Lamp mount 52: level platform

Detailed Description

To further illustrate the technical means and effects of the present invention for achieving the objectives of the present invention, the following detailed description will be made in conjunction with the accompanying drawings and preferred embodiments of the present invention with reference to the following detailed description of the specific embodiments, structures, features and effects of the LED street lamp.

The foregoing and other features, aspects and utilities of the present invention will be apparent from the following more particular description of preferred embodiments of the invention when read in conjunction with the accompanying drawings. While the present invention has been described in connection with the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, alternative constructions and arrangements included within the scope of the invention.

First embodiment

Referring to fig. 1, 2, 3, 4 and 5, the LED street lamp according to the first preferred embodiment of the present invention is mainly composed of a light distribution system 1, a heat dissipation device 2, a lamp body 3, a driving circuit 4 and a lamp installation and adjustment mechanism 5, wherein the heat dissipation device 2 (see fig. 2, 3 and 4) is disposed outside the light distribution system 1, and in order to achieve a better heat dissipation effect, the heat dissipation device 2 and the light distribution system 1 are cast into a whole, and the appearance shape may be arc or square. One side of the light distribution system is provided with the LED light-emitting units, and the other side is provided with the heat dissipation device 2, so that the LED light-emitting units can work at normal temperature. After being connected in series and in parallel, the light-emitting units are controlled by the driving circuit 4 to supply power (as shown in figures 1 and 2), the lamp body 3 is provided with the installation adjusting mechanism 5 (as shown in figures 1 and 2), and the problem of uneven luminosity distribution caused by inaccurate positions during lamp construction and installation can be solved through the installation adjusting mechanism 5. A heat dissipation breathing hole 21 (shown in fig. 2) is provided near the wire outlet on the light distribution system 1. Wherein,

the inner surface of the light distribution system 1 is formed by connecting a plurality of geometric bodies distributed in a block shape, and the geometric bodies and the central line A-A of the lamp are distributed in a bilateral symmetry way (as shown in figure 1), taking the right half part of the central line A-A as an example, the normal directions of the surfaces of the geometric bodies of the block shapes are staggered with a certain angle, and a plurality of LED light-emitting

units

11a, 11b and 11c (as shown in figure 1) with different light-emitting intensities and different light beam angles are fixed on the surface, so that the included angle between the central axis of the LED light-emitting unit 11 arranged on the surface and the central axis of the adjacent LED light-emitting unit is 5-40 degrees, and the light-emitting

units

11a, 11b and 11c can project light to the respective appointed areas. The LED light emitting units 11a have the maximum light emitting intensity, and 6 light emitting units 11a are combined into one illumination band for high beam illumination at an incident angle of 50 ° to 75 °, and they are adjacently mounted. The same approach combines 2 LED lighting units 11b with medium luminous intensity and 2 LED lighting units 11a with maximum luminous intensity to form a middle zone lighting strip with an incident angle between 35 ° and 50 °, and 1-2 LED lighting units with medium luminous intensity or wide beam angle can be used as a gap supplement between the far-beam zone and the middle zone to achieve a more uniform lighting effect. For the area with a relatively long distance from the lamp, 3 LED light-emitting units 11c with wide beam angles and small light-emitting intensity are adopted to be combined with 2 LED light-emitting units 11b with medium beam angles and medium light-emitting intensity for illumination, and the incident angle of the light-emitting units is relatively small and can be placed near the central position of the light distribution system 1, namely near the central axis A-A, and the incident angles are between 0 and 35 degrees. In order to make the whole light distribution system 1 beautiful in structure and uniform in stress, the block-shaped mounting surfaces for fixing the LED light-emitting units are connected by smooth planes or curved surfaces to form an inner surface which is roughly in a turtle shell shape. The utility model discloses a LED lamp has the batwing grading curve that accords with road lighting as shown in figure 7, and figure 8 is the illuminance distribution map such as this lamps and lanterns on the road surface when 10M mounting height. Fig. 6 shows an included angle 1a between the central axis of the light-emitting unit and the road surface, an included angle 2a between the central axis of the light-emitting unit and the road surface, and an included angle 3a between the central axis of the light-emitting unit and the road surface when the light-emitting unit irradiates the road surface.

The LED light-emitting units are connected in series and parallel by wires to form 3-4 groups, and are connected to the driving circuit 4 through wire outlets on the light distribution system 1, as shown in fig. 9, the driving circuit 4 has 4 independent outputs, the output of other groups cannot be influenced by the fault such as open circuit or short circuit of any group, and the output current of the driving circuit 4 can be controlled by photoelectric signals or clock signals, so that the automatic control function is realized for automatically turning on and off the lamp and reducing the power output of the street lamp within a certain time period. The driving circuit 4 includes a power input 41 and a constant current module 42, the power input 41 controls the constant current module 42, the constant current module 42 is connected to the LED unit 43, and the current is processed by an input 411, a filter 412, a rectifier 413, a PFC413, and a filter 415, and then is independently connected to the constant current module 421, the constant current module 422, the constant current module 423, and the constant current module 424. The constant current module 421, the constant current module 422, the constant current module 423, and the constant current module 424 are respectively connected to the corresponding LED module 431, LED module 432, LED module 433, and LED module 434 in the LED unit 43, and the light sensor 416 and the delay adjustment 417 are respectively connected to the intelligent controller and are respectively connected to the constant current module 421, the constant current module 422, the constant current module 423, and the constant current module 424.

In order to eliminate the influence of stray light of the LED light emitting unit and improve the light utilization efficiency, a light reflecting plate 13 (see fig. 2) is disposed on one surface of the light distribution system 1, on which the LED light emitting unit is fixed, an opening 13a (see fig. 1) is disposed at a position of the light reflecting plate 13 corresponding to the LED light emitting unit 11a, and meanwhile, in order to improve the protection capability of the LED light emitting unit against the environment, a transparent curved light-transmitting cover 12 (see fig. 2 and 3) is disposed on the light outlet surface of the light distribution system 1.

The light distribution system 1 is arranged on the mounting frame of the lamp body 3, the effective width and the mounting interval of the applied road can be different due to the directional light emitting characteristic of the LED light emitting unit, the deviation of the mounting angle can cause the uneven illumination of the road surface, a lamp mounting and adjusting mechanism 5 (shown in fig. 1 and 2) is arranged on the lamp body 3, and the adjusting mechanism 5 can control the elevation angle and the left-right inclination condition of the LED street lamp through the adjustment of the fixed position of the lamp mounting seat 51 and the mounting tube (shown in fig. 2), by observing a level gauge 52 (shown in fig. 2 and 3) placed on the upper portion of the lamp body, the mounting tube is fixed at any position in the mounting seat as required, the angle of the lamp in each direction can be controlled by obtaining different illumination elevation angles, and the deviation is eliminated, so that the elevation angle of the lamp relative to the setting surface is-15 degrees to-15 degrees relative to the illumination surface.

The above is only a preferred embodiment of the present invention, and the number of LED lighting units, the angle between each other and the luminous intensity and beam angle of each LED lighting unit are designed according to the lighting requirements of a specific road surface, so that those skilled in the art can make various modifications or additions to the described specific embodiment or substitute the same way, but not depart from the concept of the present invention or exceed the scope defined by the appended claims.

Second embodiment

As shown in fig. 10a-10b, the LED street lamp according to the second preferred embodiment of the present invention comprises a light distribution system 1, a heat dissipation device 2, a lamp body 3, a driving circuit 4, and a lamp mounting and adjusting mechanism 5 (as shown in fig. 10 a). The inner surface of the light distribution system 1 is formed by connecting a plurality of geometric bodies distributed in a block shape, and is distributed in bilateral symmetry with the center line a-a of the lamp (as shown in fig. 10 a), taking the right half part of the center line a-a as an example, the normal directions of the surfaces of the geometric bodies of the block shape are staggered with a certain angle, and a plurality of LED

light emitting units

11a, 11b, 11c with different light intensity and different light beam angles are fixed on the surface, so that the

light emitting units

11a, 11b, 11c all project light to respective appointed areas (as shown in fig. 10 a). The LED light emitting units 11a have the maximum light emitting intensity, and 2 light emitting units 11a are combined into one illumination band for high beam illumination at an incident angle of 50 to 75 ° and mounted adjacently. The same approach combines 1 LED lighting unit 11b with medium luminous intensity and 3 LED lighting units 11c with minimum luminous intensity to form a middle zone lighting strip with an incident angle between 35 ° and 50 °, and the high beam zone and the middle zone can be supplemented with 1-2 LED lighting units with medium luminous intensity or wide beam angle as gaps to achieve more uniform lighting effect. For the area with a relatively large distance from the lamp, 4 LED light-emitting units 11c with wide beam angle and small light-emitting intensity are adopted for illumination, and the incident angles of the light-emitting units are relatively small, so that the light-emitting units can be placed near the central position of the light distribution system 1, namely near the central axis A-A (as shown in figure 10 b), and the incident angles are between 0 and 35 degrees. In order to make the whole light distribution system 1 beautiful in structure and uniform in stress, the block-shaped mounting surfaces for fixing the LED light-emitting units are connected by smooth planes or curved surfaces to form an inner surface which is roughly in a turtle shell shape. The utility model discloses a LED lamps and lanterns have the bat wing grading curve that accords with road lighting as shown in fig. 12, and fig. 13 is the illuminance distribution map such as this lamps and lanterns on the road surface when 8M mounting height, through the configuration of foretell LED luminous intensity, beam angle, the projection angle that corresponds, just can realize the grading distribution as shown in fig. 12, 13. The heat dissipation device 2 is arranged outside the light distribution system 1, in order to achieve a better heat dissipation effect, the heat dissipation device 2 and the light distribution system 1 are cast into a whole, and the appearance shape can be arc-shaped or square. The LED light emitting units are connected in series and parallel by wires to form 3-4 groups, and are connected to the driving circuit 4 through the wire outlet on the light distribution system 1, as shown in fig. 9, the driving circuit 4 has 3-4 independent outputs, and any group has a fault such as open circuit or short circuit, which does not affect the outputs of other groups, and the output current of the driving circuit 4 can be controlled by a photoelectric signal or a clock signal, which has an automatic control function for automatically turning on and off the lamp and reducing the power output of the street lamp within a certain time period, and the detailed description is the same as embodiment 1.

In order to eliminate the influence of stray light of the LED light emitting unit and improve the light utilization efficiency, a reflector 13 is disposed on one surface of the light distribution system 1 where the LED light emitting unit is fixed, an opening 13a is disposed at a position of the reflector corresponding to the LED light emitting unit 11a, and a transparent curved transparent cover 12 (as shown in fig. 10a and 10 b) is disposed on the light exit surface of the light distribution system 1 to improve the protection capability of the LED light emitting unit against the environment.

The light distribution system 1 is arranged on the mounting frame of the lamp body 3, the LED light-emitting unit has the characteristic of directional light emission, the effective width and the mounting interval of an applied road are different, the deviation of the mounting angle can cause the uneven road illumination, the lamp mounting and adjusting mechanism 5 is arranged on the lamp body 1, the adjusting mechanism 5 can control the elevation angle and the left-right inclination condition of the LED street lamp, the angle of the lamp in each direction can be controlled by observing the level gauge 52 arranged on the upper part of the lamp body, and the deviation is eliminated (as shown in figure 10 b).

Third embodiment

As shown in fig. 11a-11b, the LED street lamp according to the third preferred embodiment of the present invention comprises a light distribution system 1, a heat dissipation device 2, a lamp body 3, a driving circuit 4, and a lamp mounting and adjusting mechanism 5 (as shown in fig. 11 a). The heat dissipation device 2 is arranged outside the light distribution system 1, and in order to achieve a better heat dissipation effect, the heat dissipation device 2 and the light distribution system 1 are cast into a whole, and the appearance of the light distribution system is rectangular. One side of the light distribution system is provided with the LED light-emitting units, and the other side is provided with the heat dissipation device 2, so that the LED light-emitting units can work at normal temperature. The plurality of light-emitting units are controlled by the driving circuit 4 to supply power after being connected in series and in parallel, the lamp body 3 is provided with the installation adjusting mechanism 5, and the problem of uneven luminosity distribution caused by inaccurate position during lamp construction and installation can be solved through the installation adjusting mechanism 5. A heat dissipation breathing hole 21 (shown in fig. 11b) is provided near the wire outlet on the light distribution system 1. The inner surface of the light distribution system 1 is a flat surface, a plurality of substrates with different inclination angles are fixed on the flat surface, the substrates are symmetrical left and right relative to the central line a-a of the lamp (as shown in fig. 11a), and the LED

light emitting units

11a, 11b and 11c with different light emitting intensities and light beam angles are arranged on the independent surfaces, so that the

light emitting units

11a, 11b and 11c all project light to respective appointed areas (as shown in fig. 11a and 11 b). Taking the right half of the center line a-a as an example, the 2 LED light emitting units 11a have the maximum light emission intensity at their incident angles between 50 ° and 75 °. The combination of 1 LED light-emitting unit 11b with medium luminous intensity and 3 LED light-emitting units 11c with minimum luminous intensity forms an illumination band in the middle area, the incident angle is between 35 ° and 50 °, and the high beam area and the middle beam area can be supplemented by 1-2 LED light-emitting units with medium luminous intensity or wide beam angle to achieve more uniform illumination effect. For the area with a relatively large distance from the lamp, 4 LED light-emitting units 11c with wide beam angles and small light-emitting intensity are adopted for irradiation, and the incident angles of the light-emitting units are relatively small and can be placed near the central position of the light distribution system 1, namely near the central axis A-A, and the incident angles are between 0 and 35 degrees. The utility model discloses a LED lamps and lanterns have the batwing grading curve that accords with the road illumination as shown in fig. 12, and fig. 13 is the illuminance distribution map such as this lamps and lanterns on the road surface when 8M mounting height. The other structure is the same as that of embodiment 1.

The technical innovation of the LED street lamp with the structure has many possible parts for technicians in the same industry nowadays, and the LED street lamp has technical progress.

As described above, the utility model discloses a basic concept is the one side installation LED luminescence unit that utilizes the grading system, each LED luminescence unit axis direction directional illumination target's each region to have the required best optical system of road lighting grading, supply power by drive circuit shunting control after a plurality of luminescence unit series-parallel connection, the another side of grading system is equipped with the radiator, guarantee that each LED luminescence unit is worked under normal temperature, can overcome the inhomogeneous problem of luminosity distribution that the position inaccuracy caused when being under construction the installation by lamps and lanterns through installation adjustment mechanism. However, other operable embodiments of the present invention may be modified within the technical field of the present invention, as long as they have the most basic knowledge. The present invention is directed to a method for producing a light emitting device, and a light emitting device using the method.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a LED street lamp, includes grading system (1), heat abstractor (2), lamp body (3), drive circuit (4), lamps and lanterns installation guiding mechanism (5), and wherein, grading system (1) is fixed on lamp body (3), and drive circuit (4) are installed in the cavity of lamp body (3), connect the LED luminescence unit of grading system (1) through the wire, its characterized in that: the included angle between the central axis of at least three LED light-emitting units (11) of the light distribution system (1) and the central axis of each adjacent LED light-emitting unit (11) is 5-40 degrees.

2. The LED street light according to claim 1, wherein the light distribution system (1) comprises at least three LED lighting units (11) with different light intensities and corresponding beam angles.

3. The LED street lamp according to any one of the claims 1-2, characterized in that at least two LED light units (11a) in the light distribution system (1) illuminate towards the longitudinal direction of the road on both sides of the lamp and towards the road surface area farthest away from the lamp, and at least one LED light unit (11c) in the light distribution system (1) illuminates towards the road surface area closest to the lamp, i.e. the vicinity of the lower point of the lamp.

4. The LED street light according to any of claims 1-2, characterized in that the light distribution system (1) has at least two LED lighting units (11b) that illuminate light towards the middle area of the road surface in the longitudinal direction of the road on both sides of the light fixture.

5. The LED street light according to claim 3, characterized in that the LED light emitting units (11a) which are irradiated towards the road surface area farthest away from the lamp have an included angle of 15-40 ° between the central axis and the road surface, and the light emitting intensity is the largest among all the LED light emitting units; the central axis of the LED light-emitting unit (11c) which irradiates towards the road surface area closest to the lamp, namely the vicinity of the lower point of the lamp, forms an included angle of 55-90 degrees with the irradiation plane, and the luminous intensity is the smallest in all the LED light-emitting units.

6. The LED street light as claimed in claim 4, wherein the LED lighting units (11b) which are directed towards the middle area of the road surface towards both sides of the light fixture along the longitudinal direction of the road have a central axis which is at an angle of 40 ° to 55 ° to the road surface, and the luminous intensity is moderate in all the LED lighting units.

7. The LED street lamp according to claim 1, wherein a reflector (13) is disposed on a surface of the light distribution system (1) for fixing the LED light-emitting unit, and an opening (13a) is disposed at a position of the reflector corresponding to the LED light-emitting unit (11 a).

8. The LED street lamp according to claim 1, characterized in that the light distribution system (1) has a transparent curved or flat translucent cover (12) on the light exit surface.

9. The LED street lamp according to claim 1, characterized in that the back of the light distribution system (1) is provided with a heat sink (2).

10. The LED street light according to claim 9, wherein the heat sink (2) is configured as a separate heat sink module installed on the back of the light distribution system 1 corresponding to the LED light emitting units (11).

11. The LED street light according to claim 9, characterized in that the heat sink (2) is integrally cast with the light distribution system (1).

12. The LED street light according to any one of claims 9, 10 or 11, characterized in that the light distribution system (1) is provided with a heat dissipation breathing hole (21).

13. The LED street light according to claim 1, wherein the driving circuit (4) has at least three independent constant current outputs for respectively controlling the respective LED lighting units.

14. The LED street lamp according to claim 13, wherein the driving circuit (4) controls the output power by automatically switching on and off the power supply after receiving the illuminance signal or the time signal or other control signals.

15. The LED street lamp according to claim 1, wherein the lamp body (3) is provided with an installation adjustment mechanism (5), the elevation angle of the lamp relative to the irradiation surface is-15 ° - +15 ° by adjusting the fixed position of the lamp installation seat (51) and the installation tube, and the installation tube is fixed at any position in the installation seat as required to obtain different irradiation elevation angles.

16. The LED street light as claimed in claim 1, characterized in that the upper part of the light body (3) is provided with a level platform (52) for determining the installation inclination angle of the light.