CN201706340U - Light emitting diode (LED) street lamp with adjustable optical path and angle - Google Patents

Abstract

The utility model provides a light emitting diode (LED) street lamp with adjustable optical path and angle, which comprises an LED light source and a cooling system thereof; an LED light source module is fixed on a cooling base through high heat conduction material; the cooling base and the surface of the lamp are provided with saw tooth-shaped cooling channels, thereby improving the cooling characteristic of the LED light source module and prolonging the service life of the LED; and the cooling base is fixed in the lamp through a support, the angle between the plane of the cooling base and a road surface can be adjusted by adjusting the support so as to achieve the purposes of adjustable light-emitting optical path and angle as well as adjustable light area on the road surface.

Description

An LED street lamp with adjustable optical distance and angle

technical field

The utility model relates to LED lighting technology, in particular to an LED street lamp with adjustable optical path and angle

Background technique

As a new solid-state light source in the 21st century, LED has the advantages of energy saving, environmental protection, safety, easy driving, small size, long life, rich colors, and high reliability. It is widely used in traffic signal indication, backlight, general lighting, street lamps and other fields.

LED light-emitting tubes are driven by DC. Compared with ordinary incandescent lamps, the luminous efficiency is increased by at least 4 times, the energy consumption is only 1/10 of incandescent lamps, and the life span is extended by 50 times.

Different from traditional light sources, LEDs cannot radiate the heat generated by themselves through thermal radiation, and can only dissipate heat through heat conduction, convection, etc. Therefore, in the actual application process, thermal stress is the main factor affecting the photoelectricity of LEDs. characteristics and service life. At present, the LEDs used in street lights are light source modules composed of high-power white LEDs. How to minimize the thermal stress and lower the temperature of the LEDs in the limited space of the lamp shell is the key to make it work normally for a long time where.

Different from traditional light sources, the chip size of LED is very small, and compared with traditional street lights, the light diffusion angle is small, and at the same height, the area irradiated on the ground is small. If the density of street LED street lights is small, "blind spots" are likely to appear between LED street lights; if the density of street LED street lights is high, the cost will increase. How to expand the illuminated area, reduce costs, and reduce the appearance of "blind spots" while ensuring brightness and illuminance is also the key to the application of LED street lights.

The utility model of utility model patent application number ZL200910027386.4 discloses a LED modular street lamp head with adjustable irradiation angle, which fixes the adjusting bracket plate on the lamp head bracket longitudinally by adjusting screws, so that the light source module can rotate within a certain irradiation angle , to improve the area of the illuminated area from the street lamp to the center of the street, but "blind areas" may still appear in the illuminated area on both sides of the street lamp. The design of the heat dissipation substrate of the lamp makes it easy for dust and rain to accumulate, which is not conducive to the self-cleaning of the street lamp. After working for a period of time, the heat dissipation capacity of the lamp is greatly reduced.

The utility model has the advantage that by adjusting the angle between the heat dissipation base and the bottom plate, the area of the illuminated area on both sides of the street lamp can be improved, and the occurrence of "blind areas" can be reduced; the illuminated area from the street lamp to the center of the street can be increased by installing the street lamp. The elevation angle of the luminaire is improved. In the utility model, the zigzag heat dissipation channel on the surface of the lamp housing and the heat dissipation base doubles the heat dissipation area of the lamp housing and improves the heat dissipation efficiency of the lamp; at the same time, the "V" shaped groove has a structure with a wide top and a narrow bottom , It is not conducive to the accumulation of dust, rain, etc., and it is convenient for the self-cleaning of street lamps.

Contents of the invention

In order to solve the shortcomings and deficiencies in the above-mentioned technologies, the utility model provides a design scheme of LED street lamps with adjustable optical path and angle, the purpose is to reduce the damage caused by high temperature during the application of high-power LED street lamps. The problem of reduced reliability of LED street lamps, as well as the problems of small irradiation area, insufficient brightness and illumination of LED street lamps.

The technical scheme of the utility model is as follows:

An LED street lamp with adjustable optical distance and angle, including LED modular light source, lamp housing, two heat dissipation bases, several aluminum-based circuit boards, and a housing with glass lampshade; , the middle side plate and the adjustment bracket. The front and rear ends of the side panels on both sides of the lamp housing have adjustment brackets. The heat dissipation base with the aluminum base circuit board is fixed and installed through the middle side plate and the adjustment bracket. The LED light source is welded on the aluminum base circuit board. The groove for adjusting the position of the bolt, the angle between the plane of the heat dissipation base and the plane of the bottom plate can be adjusted by adjusting the position of the bolt of the adjustment bracket; there are light pole jacks and screw holes for fixing the street light on the light pole on the bottom plate of the lamp housing; There are screw holes on the edge of the shell, the shell containing the glass lampshade is connected with the lamp shell, and the edge is padded with waterproof rubber strips to make the shell and the lamp shell tightly connected to prevent water vapor and dust from entering the interior of the street lamp; the heat dissipation base and the outside of the lamp shell have One-sided sawtooth heat dissipation channel.

The lamp housing is trapezoidal on the outside and arched on the inside. The surface of the inside arched structure and the surface of the base are mirrored and coated with highly reflective materials. The lamp housing is stretched directly through the material and made as a whole.

The aluminum-based circuit board is directly fixed on the heat dissipation base, and a high thermal conductivity material is coated between the aluminum-based circuit board and the heat dissipation base.

The LED street lamp adopts modular light source distribution, and the LED light source is welded on the aluminum-based circuit board to form a modular light source. Each street lamp can be composed of several groups of LED light source modules, and each modular light source is composed of several LEDs. You can choose whether to add lenses according to the road surface needs and cost.

The edge of the lamp housing is provided with a screw hole for fixing the housing, and at the same time, the edge is padded so that the housing and the lamp housing are closely connected and prevents water vapor and dust from entering the waterproof rubber strip inside the street lamp.

The technical effect of the utility model is as follows:

In the LED street lamp of the utility model, the aluminum-based circuit board is directly fixed on the heat dissipation base provided with a single-sided zigzag heat conduction channel. Through the high heat conduction material between the two, the heat generated by the LED operation can be conducted to the heat dissipation base as soon as possible. The base, the lamp housing, and then conduct to the outside world through the lamp housing. The material of the lamp housing and the heat dissipation base has high thermal conductivity, and the serrated heat conduction channel improves the heat dissipation performance of the LED street lamp, thereby reducing the temperature of the LED street lamp and prolonging the service life of the street lamp.

The arched cross-section structure on the inside of the lamp housing can effectively gather the light generated by the LED; the inside is made into a mirror surface, coated with a highly reflective material, which can effectively improve the utilization rate of the light emitted by the LED after reflection.

On the upper side of the base plate, on the outer side of the side panels on both sides, and on the side of the heat dissipation base, there are sawtooth heat dissipation channels, which doubles the heat dissipation area of the lamp housing. Different from traditional finger-shaped heat dissipation channels, zigzag heat dissipation channels, "V"-shaped grooves, and a structure with a wide top and a narrow bottom are not conducive to the accumulation of dust, rain, etc., and are convenient for self-cleaning of street lamps.

By adjusting the position of the bolts, the angle between the base plane and the bottom plate plane can be adjusted. The design of the adjustable bracket is conducive to adjusting the irradiation angle of the base plate, changing the illuminated area of the street lamp according to the height, and reducing the density of street lamps. At the same time, the design of the bracket can save the cost of making lamps materials, cost savings.

Modular light source distribution can provide manufacturers with a lot of adjustment space. By increasing or reducing the number of light source modules and matching different light source modules, the purpose of changing the power of street lights can be achieved. If it cooperates with the design of the driving circuit to control the opening and closing of the light-emitting module, electric energy can be saved.

Description of drawings

Fig. 1 is a schematic diagram of the cross-section of the lamp housing and the heat dissipation base of the street lamp of the present utility model without the installation of the heat dissipation base;

Fig. 2 is a schematic cross-sectional view of a lamp housing with a heat dissipation base mounted on a street lamp of the present invention;

Figure 3 is a schematic diagram of the installation of the heat dissipation base of the utility model street lamp;

Figure 4 is a schematic diagram of the adjustable angle of the street lamp bracket of the utility model;

Fig. 5 shows the effect diagram of the ground illumination area after the angle of the street lamp bracket of the utility model is adjusted.

In the figure: 1. Lamp shell 2. Side panels on both sides 3. Middle side panel 4. Adjustment bracket 5. Heat dissipation base 6. Serrated heat dissipation channel 7. Light pole jack 8. Screw hole 9. Unadjusted adjustment bracket Before the bolt position, the illuminated area of the lamp at a certain height 10. After adjusting the position of the bolt on the bracket, the illuminated area of the lamp at the same height

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1 and Figure 2, it includes LED modular light source, lamp housing 1, several heat dissipation bases 5, several aluminum-based circuit boards, lampshades, waterproof rubber strips, and a housing containing glass lampshades; the lamp housing consists of a table-shaped base plate, The two side panels 2, the middle panel 3 and the adjustment bracket 4 are formed. The front and rear ends of the side plates on both sides of the lamp housing have adjustment brackets 4, and the heat dissipation base 5 equipped with an aluminum-based circuit board is fixed and installed through the middle side plate 3 and the adjustment bracket 4. The LED light source is welded on the aluminum-based circuit board, and the adjustment bracket There are grooves for adjusting the position of the bolts, and the angle between the plane of the heat dissipation base 5 and the plane of the bottom plate can be adjusted by adjusting the position of the bolts of the adjustment bracket; there is a light pole socket on the bottom plate of the lamp housing to fix the street lamp on the light pole 7. Screw holes 8; there are screw holes on the edge of the lamp housing, and the housing containing the glass lampshade is connected to the lamp housing through bolts, and the edge is padded with waterproof rubber strips to make the housing and the lamp housing closely connected to prevent water vapor and dust from entering the interior of the street lamp; Both the heat dissipation base and the outside of the lamp housing have a single-sided serrated heat dissipation channel.

The material of the lamp housing 1 and the heat dissipation base 5 is an alloy with good thermal conductivity. The outside of the lamp housing 1 is trapezoidal, the inner arched structure, and the inner arched section structure of the lamp housing, which can effectively gather the light generated by the LED; Highly reflective material, after reflection, can effectively improve the utilization rate of light emitted by LED. The grooved brackets 4 on the middle side plate 3 and the side plates 2 on both sides are provided with screw holes, and the heat dissipation base 5 is fixed together by bolts. By adjusting the position of the bolt, the angle between the cooling base and the bottom plate can be changed to achieve the purpose of adjusting the lighting angle of the LED street light.

The LED light source module is fixed on the heat dissipation base 5 through a high thermal conductivity material, and the heat on the heat dissipation base 5 is conducted to the lamp housing through the middle side plate 2 and the bracket 4 with grooves, and then to the outside, so as to improve the heat dissipation of the LED street lamp Performance, thereby reducing the temperature of LED street lights and prolonging the service life of street lights.

In order to better improve the heat dissipation capacity of the lamp, the outer side of the lamp housing 1 (the upper side of the bottom plate and the outer sides of the side plates on both sides), and the side of the heat dissipation base 5 are provided with serrated heat dissipation channels 6, which doubles the heat dissipation of the lamp housing. The heat dissipation area improves the heat dissipation efficiency of the lamps; at the same time, the "V"-shaped groove, with a wide top and a narrow bottom structure, is not conducive to the accumulation of dust, rain, etc., and is convenient for self-cleaning of street lights.

The light pole socket 7 reserved on the table base plate can greatly simplify the on-site construction of the street lamp. When installing the street lamp, it is only necessary to insert the light pole into the socket and fix it with bolts. Greatly reduce the potential safety hazards caused by frequent operations during street lamp installation.

The function of the screw hole 8: Fix the lamp on the light pole through the bolt ①; ② Fix the waterproof rubber strip, glass lampshade, shell, etc.

As shown in Figure 3, the middle side plate is provided with an inner groove, and the plane without heat dissipation channels on the heat dissipation base is snapped into the groove of the middle side plate, the groove plane and the plane without heat dissipation channels are coated with high thermal conductivity materials, and the heat dissipation substrate is rotated To a suitable angle, fix the heat dissipation substrate through the middle side plate and the bolts at the adjustment bracket. A scale can be provided at the adjustment bracket, and the angle of the heat dissipation substrate can be determined directly by adjusting the scale of the bracket by standardizing the size of the heat dissipation base and the plane position without heat dissipation channels.

As shown in Figure 4, when assembling street lamps, according to the height of the lamp pole and the density of the street lamps set in the street, select the appropriate angle of the heat dissipation substrate. By changing the position of the bolts on the adjusting bracket 4, the included angle between the plane of the heat dissipation base and the plane of the bottom plate can be adjusted, so as to achieve the purpose of adjusting the luminous angle and changing the area illuminated on the ground.

Accompanying drawing 5 shows the effect diagram of the ground illumination area after the angle adjustment of the street lamp bracket of the present invention. By adjusting the angle of the street lamp bracket, different irradiation areas can be obtained on the ground. In Figure 4, the area of the ground illumination area 10 is obviously larger than the area of the illumination area 9. According to the light poles of different heights, when assembling the street lamps, properly adjust the angle of the bracket to ensure Under the condition of brightness and illuminance, the ideal illumination area can be obtained, the density of street lamps can be reduced, and the cost can be saved.

The above is only a preferred embodiment of the present utility model. It should be pointed out that for those skilled in the art, based on the spirit and essence of the present utility model, other deformations and improvements can also be made, but these deformations and improvements All will fall into the protection scope of the present utility model.

Claims (5)

1. An LED street lamp with adjustable optical distance and angle, characterized in that: it includes an LED modular light source, a lamp housing, two heat dissipation bases, several aluminum-based circuit boards, and a housing containing a glass lampshade; the lamp housing consists of a table-shaped Bottom plate, side plates on both sides, middle side plate and adjustment bracket; the front and rear ends of the side plates on both sides of the lamp housing have adjustment brackets, and the heat dissipation base equipped with aluminum-based circuit board is fixed and installed through the middle side plate and the adjustment bracket. LED The light source is welded on the aluminum base circuit board. There are grooves on the adjusting bracket for adjusting the position of the bolts. The angle between the plane of the heat dissipation base and the plane of the bottom plate can be adjusted by adjusting the position of the bolts of the adjusting bracket; Fix the street lamp on the light pole socket and screw hole of the light pole; the outer shell with the glass lampshade is connected with the light shell; the heat dissipation base and the outside of the light shell have unilateral serrated heat dissipation channels. 2. An LED street lamp with adjustable optical distance and angle as claimed in claim 1, characterized in that: the lamp housing is trapezoidal on the outside and arched on the inside, and the surface of the arched structure on the inside and the surface of the base are made as The mirror surface is coated with highly reflective materials, and the lamp housing with a table-shaped bottom plate, side panels on both sides, middle side panels, and adjustment brackets is directly stretched through the material and made into a whole. 3. An LED street lamp with adjustable optical distance and angle as claimed in claim 1, characterized in that: the aluminum-based circuit board is directly fixed on the heat dissipation base, and the aluminum-based circuit board and the heat dissipation base are coated with There are high thermal conductivity materials. 4. An LED street lamp with adjustable optical distance and angle as claimed in claim 1, characterized in that: the street light source can be composed of several groups of LED modular light sources, each modular light source is composed of several LEDs, and the LED light source is welded A modular light source is constructed on an aluminum base circuit board. 5. An LED street lamp with adjustable optical distance and angle as claimed in claim 1, characterized in that: the edge of the lamp housing is provided with a screw hole for fixing the housing, and at the same time, pads are added at the edge to make the housing and the lamp housing tightly The waterproof rubber strip that is connected and prevents water vapor and dust from entering the interior of the street lamp. the

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