CN102661557A

CN102661557A - LED (light-emitting diode) lamp fitting design applicable to large public illumination system

Info

Publication number: CN102661557A
Application number: CN201210174786XA
Authority: CN
Inventors: 李劲松; 张献; 金亮
Original assignee: Tianjin Polytechnic University
Current assignee: Tianjin Polytechnic University
Priority date: 2012-05-30
Filing date: 2012-05-30
Publication date: 2012-09-12

Abstract

The invention discloses LED (light-emitting diode) lamp fitting design applicable to a large public illumination system, comprising an LED array (2), a fly eye lens optical group (3) and a base inclination design (4), wherein a main chip group of the LED array (2) adopts an uneven lamp distributing mode after heat radiation and optimization; the base inclination design (4) is adjusted for three times; the uneven lamp distributing mode after optimization is adopted, namely, the interval between two adjacent LEDs is decreased gradually from the central part to two sides of the lamp fitting, so that the central temperature difference is reduced, and simultaneously, the average temperature of the whole lamp plate is lowered, and the heat radiation efficiency is improved; a light source is subjected to secondary light distribution by adopting the fly eye lens optical group capable of forming a rectangular light spot, and the light distribution is adjusted for three times by adopting the oblique angle of the base, so that even illumination is realized, high light utilization ratio of light is ensured, and the light emitting intensity is improved; and the reliability is high, the cost is low, and on the basis of durable quality requirement, the concept of energy conservation and environment friendliness is realized; and the LED lamp fitting design applicable to the large public illumination system can be applied to the street lamp illumination of public traffic at night, and also can be used as highlight searchlights in special occasions.

Description

The LED Design of Luminaires that can be used for large-scale public lighting system

Technical field

Attend by making rapid progress of scientific and technical innovation, human strong day by day to the pursuit of environmental protection, sustainable development becomes the eternal theme of the whole society.With people's closely-related green illumination of living--light emitting diode (light emitting diode, LED), because of plurality of advantages such as its energy-saving and environmental protection, be considered to most possible replace incandescent the 4th generation lighting source, receive extensively and attracting attention.But heat radiation has become the development of LED illuminating lamp and has popularized the stumbling-block on the road with the light intensity problem.Up to now, the heat radiation and the light intensity problem of LED illuminating lamp are carried out big quantity research both at home and abroad, proposed multiple optimization and method for designing.

The present invention--can be used for the LED Design of Luminaires of large-scale public lighting system: combine calorifics theory and realistic model test result; Confirm reasonable size; And the non-homogeneous cloth lamp mode after adopt optimizing, promptly reduce the spacing between adjacent two LEDs gradually to both sides from the light fixture center, thereby on the decrease the heart temperature difference time; Reduce the mean temperature of the whole lamp utmost point, improve radiating efficiency; Based on optical principle, employing can form the fly's-eye lens optical group of rectangular light spot light source is carried out secondary light-distribution, adopts the base inclination angle that light is distributed and carries out three adjustment, thereby realizing evenly having guaranteed high light utilization efficiency again in the illumination, promote luminous intensity.Base oneself upon calorifics and the optical theory basis is designed the LED illuminating lamp; Utilization realistic model test result is further optimized; Reliability is high, and cost is low, on long-lived quality requirement, has realized the theory of energy-conserving and environment-protective again; The street lighting in night that can be widely used in public transport, the high bright searchlight that also can be used as special occasions uses.

Background technology

LED produces heat in the course of the work at present, if these heats can not dissipate rapidly and gather, causes the temperature of led chip too high, will cause that performances such as its electricity, light, look change, and have a strong impact on the service behaviour of LED.And the power of single LEDs chip is little, and light efficiency is not high, and luminous flux can't satisfy the desired standard near 1000 lumens of general illumination.How to pass through optimal design, realize that maximum heat dissipation capacity and high brightness become an important subject of LED lighting engineering.

Summary of the invention

Technical problem to be solved by this invention is, optimizing thermal solution and optical design through to the LED illuminating lamp realize maximum heat dissipation capacity and high brightness, and functional reliability is high, and cost of manufacture is low, energy-conserving and environment-protective.

The technical scheme that the present invention adopts is: host chipset is the led array (2) through the non-homogeneous cloth lamp of the employing mode behind the optimizing thermal solution, the fly's-eye lens optical group (3) of LED illuminating lamp secondary light-distribution, the base inclination angle design (4) of three adjustment.

Host chipset is the led array (2) through the non-homogeneous cloth lamp of the employing mode behind the optimizing thermal solution; Reduce the spacing between adjacent two LEDs from the light fixture center gradually to both sides; Thereby the heart temperature difference time, reduce the mean temperature of whole lamp plate on the decrease, improve radiating efficiency.

The fly's-eye lens optical group (3) of LED illuminating lamp secondary light-distribution; After the light that light source sends is modulated by central collimation lens and paraboloid; Form the inner surface that a branch of collimated light beam that is parallel to primary optical axis incides fly's-eye lens; It is that 26 light beam penetrates to the road surface that each lenticule unit on the fly's-eye lens is modulated into shooting angle with the directional light of incident, realizes high brightness.

The base inclination angle design (4) of three adjustment, the different angle of LED inclination with difference row makes them be responsible for the illumination of zones of different on the road surface, thereby makes the illuminance on road surface very even.

Description of drawings

Fig. 1 is an overall structure block diagram of the present invention:

Fig. 2 is the led array sketch map that adopts non-homogeneous cloth lamp mode;

Fig. 3 is the fly's-eye lens optical group structure chart of LED illuminating lamp secondary light-distribution;

Fig. 4 is the base inclination angle design diagram of three adjustment.

Elaborate below in conjunction with instance and accompanying drawing LED Design of Luminaires to the large-scale public lighting system of the present invention-can be used for.

As shown in Figure 1, the 220V alternating current is inserted power lead, supply with host chipset and be led array (2) through the non-homogeneous cloth lamp of the employing mode behind the optimizing thermal solution, make the LED illuminating lamp improve radiating efficiency.The light that is sent makes the illuminance on road surface very even through the fly's-eye lens optical group (3) of secondary light-distribution and three adjustment (4) of base inclination angle design when reaching highlight illumination.

As shown in Figure 2; Be that host chipset is through the led array of the non-homogeneous cloth lamp of the employing mode behind the optimizing thermal solution, reduce the spacing between adjacent two LEDs gradually to both sides from the light fixture center, thereby on the decrease the heart temperature difference time; Reduce the mean temperature of whole lamp plate, improve radiating efficiency.

As shown in Figure 3; It is the fly's-eye lens optical group of LED illuminating lamp secondary light-distribution; After the light that light source sends is modulated by central collimation lens and paraboloid; Form the inner surface that a branch of collimated light beam that is parallel to primary optical axis incides fly's-eye lens, it is that 26 light beam penetrates to the road surface that each the lenticule unit on the fly's-eye lens is modulated into shooting angle with the directional light of incident, realizes high brightness.

As shown in Figure 4, be the base inclination angle design of three adjustment, the different angle of LED inclination with difference row makes them be responsible for the illumination of zones of different on the road surface, thereby makes the illuminance on road surface very even.

Claims

1. can be used for the LED Design of Luminaires of large-scale public lighting system, it is characterized in that also being provided with: host chipset is the led array (2) through the non-homogeneous cloth lamp of the employing mode behind the optimizing thermal solution; The fly's-eye lens optical group (3) of LED illuminating lamp secondary light-distribution; The base inclination angle design (4) of three adjustment.

2. the LED Design of Luminaires that can be used for large-scale public lighting system according to claim 1; Its characteristic also is; Described host chipset reduces the spacing between adjacent two LEDs for the led array (2) through the non-homogeneous cloth lamp of the employing mode behind the optimizing thermal solution from the light fixture center to both sides gradually, thereby on the decrease the heart temperature difference time; Reduce the mean temperature of whole lamp plate, improve radiating efficiency.

3. the LED Design of Luminaires that can be used for large-scale public lighting system according to claim 1; Its characteristic also is; The fly's-eye lens optical group (3) of described LED illuminating lamp secondary light-distribution; After the light that light source sends is modulated by central collimation lens and paraboloid; Form the inner surface that a branch of collimated light beam that is parallel to primary optical axis incides fly's-eye lens, it is that 26 light beam penetrates to the road surface that each the lenticule unit on the fly's-eye lens is modulated into shooting angle with the directional light of incident, realizes high brightness.

4. the LED Design of Luminaires that can be used for large-scale public lighting system according to claim 1; Its characteristic also is; The base inclination angle design (4) of described three adjustment; The different angle of LED inclination with difference row makes them be responsible for the illumination of zones of different on the road surface, thereby makes the illuminance on road surface very even.