WO2009015605A1

WO2009015605A1 - Led tunnel lamp

Info

Publication number: WO2009015605A1
Application number: PCT/CN2008/071824
Authority: WO
Inventors: Shengyuan Li
Original assignee: Shenzhen Bang-Bell Electronics Co., Ltd
Priority date: 2007-07-30
Filing date: 2008-07-30
Publication date: 2009-02-05
Also published as: CN101101095A; CN100578077C

Abstract

A LED tunnel lamp comprises a body case and at least a lighting module provided in the body case. The body case comprises a lamp body fixed structure. The lighting module comprises a lens covering the LED. The lens comprises a scatter bulge (2100) which is in the shape of pillow and is in the middle position of the lens and light collecting sides (2101) which are in the shape of protruding wave crest and are at both sides of the scatter bulge. An internal groove (2102) is provided on the inner side of the scatter bulge to hold the LED. The LED tunnel lamp can control the light distribution so that the facula can be in the shape of rectangle,the illumination intensity in an effectively illuminated area can be very uniform, and the stray light outside of the area can be avoided.

Description

LED tunnel light

Technical field

The invention belongs to the field of LED illumination and relates to an LED tunnel lamp. Background technique

Conventional tunnel lighting fixtures mainly use sodium lamps, mercury lamps or metal halide lamps, which consume large amounts of electricity, have a short life span, and are expensive to maintain, which is not conducive to environmental protection. Therefore, the replacement of traditional lamps with LED lamps has become a revolution in the field of lighting.

LED tunnel lights usually have a lens on the outside of the LED to concentrate the light, but the spot projected by the existing lens is circular, and the light intensity between the center and the periphery is large; in addition, for some in some direction Where large-area illumination is required, but in a small area where small-area illumination is required, such as road lighting, the illumination range is required to be wide in the direction of road extension, the illumination effect is good, and the angle requirement is large; but it is not required in the vertical road direction. A wide range of illumination, otherwise it wastes power and causes light pollution to the surrounding environment. However, for the existing LEDs of the circular lens, it is only possible to achieve the light intensity requirement by superimposing the lamps in the direction of the road extension and superimposing the spots of the adjacent lamps. Even in this case, it is difficult to avoid the illumination of the "ribs". The effect is that the illumination below the luminaire is high, and the illuminance in other areas is low, resulting in low average illuminance and poor uniformity of the road surface. This uneven illumination can directly affect driving safety. Summary of the invention

The technical problem to be solved by the present invention is to provide an LED tunnel lamp, which solves the problems of poor lens concentrating effect, uneven illumination light distribution, large light pollution, and large power consumption of the existing LED lamp.

In order to solve the above technical problem, the present invention adopts the following technical solution: an LED tunnel lamp, comprising a housing, at least one lighting module mounted on the housing; the housing comprising a lamp body fixed The illumination module includes a lens that is covered on the LED lamp, wherein the lens includes a astigmatism protrusion in the shape of a pillow at a middle portion of the lens, and a condensing edge on both sides of the astigmatism protrusion; the astigmatism protrusion includes light on the inner wall surface The light emitting surface of the incident surface and the outer wall surface; the lamp body fixing structure comprises a fixing plate and a fixing plate surface of the LED lamp housing, wherein the collecting edge has a convex peak shape.

Preferably, the inner side of the astigmatism protrusion is provided with a recess for accommodating the LED, and the wall surface shape of the pit is semi-spherical, cylindrical, the top surface is a concave arc surface, and the top surface is a convex arc surface. Any of a cylindrical shape.

Preferably, the lens is made of PC or PMMA transparent material.

Preferably, the fixing plate is provided with a mounting chute, and the fixing frame is provided with a mounting hole; the mounting chute and the mounting hole have a fixing bolt fixedly connecting the fixing plate surface and the fixing frame; The slot has a slot edge for the bolt to be clamped inwardly toward the closed slot. The trough-type mounting structure not only can firmly fix the lamp body on the wall body, but also has the advantage of convenient adjustment. The position of the lamp body moving up and down is adjusted by sliding the bolt in the groove body, thereby adjusting the illumination range to achieve illumination. The range is optimal.

Preferably, the space inside the casing is divided into two groups of independent parts arranged side by side, and a separate lighting module is installed in the space of each independent part; two sets of installation chutes are arranged on the fixing plate surface of the casing. The mount is a bridge that includes two sets of mounting holes.

The beneficial effects of the invention are: after adopting such a lens, the light distribution curve is batwing, and the profiles are not exactly the same according to the needs, and the light distribution can be reasonably controlled to make the spot rectangular and in the effective irradiation area. The light-emitting efficiency is greater than 75%, the total light transmittance is greater than 90%, the light loss is minimized, and the light emitted by the light source is fully utilized; in addition, the illumination is very uniform in the effective irradiation region. The edge of the spot is clear, there is almost no stray light outside the effective illumination area, no bad glare, no light pollution; it can be widely used in tunnel lighting, road lighting, advertising and other lighting areas that have special requirements for lighting areas, such as tunnel lights, Street lamps, floodlights, etc. are green, energy-saving and environmentally friendly lighting products. In the original LED lamp lens base The light extraction efficiency and the light exit angle are increased. With the same mounting height, the lamp spacing can be increased to better suit the needs of large angle lighting. The overall brightness of the ground has also increased. The light collecting effect of the invention is good, only about 50% of the light flux of the ordinary LED lamp can meet the light distribution and illumination of the road illumination, and the energy saving and environmental protection requirements, thereby having remarkable energy saving effect; the illumination uniformity is good, the illumination Accurate range, no glare, no radiation.

The invention is further described in detail below with reference to the accompanying drawings. DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a lens for an LED tunnel lamp of the present invention.

Fig. 2 is a plan view of a lens for an LED tunnel lamp of the present invention.

Figure 3 is a cross-sectional view taken along line A-A of Figure 2 .

Fig. 4 is a cross-sectional view showing a second embodiment of a lens for an LED tunnel lamp of the present invention.

Fig. 5 is a cross-sectional view showing a third embodiment of a lens for an LED tunnel lamp of the present invention.

Fig. 6 is a cross-sectional view showing a fourth embodiment of a lens for an LED tunnel lamp of the present invention.

Figure 7 is a plan view of an LED tunnel light using the lens of the present invention.

Figure 8 is a illuminance distribution diagram of an LED tunnel lamp using the lens of the present invention.

Figure 9 is a perspective view of the LED tunnel light of the present invention.

Figure 10 is a structural exploded view of the LED tunnel light of the present invention.

Figure 11 is a perspective view of a lens cover of the LED tunnel light of the present invention.

Figure 12 is a plan view of a lens shade of an LED tunnel light of the present invention.

Figure 13 is a cross-sectional view taken along line A-A of Figure 12 .

Figure 14 is a cross-sectional view taken along line B-B of Figure 12 .

Figure 15 is a bottom plan view of the lens shade of the LED tunnel light of the present invention.

Figure 16 is a front perspective view of the LED tunnel light of the present invention.

Figure 17 is a plan view of a LED tunnel light of the present invention projected onto a road surface. Figure 18 is a illuminance distribution diagram of an LED tunnel light of the present invention on a road surface. detailed description

The present invention provides an LED tunnel light. The tunnel light includes a housing and at least one lighting module mounted to the housing. Wherein the housing comprises a lamp body fixing structure; the lighting module comprises a lens that is covered on the LED lamp. The lens includes an astigmatism protrusion in the shape of a pillow at the middle of the lens and a condensing edge on both sides of the astigmatism protrusion. The astigmatism projection includes a light incident surface of the inner wall surface and a light exit surface of the outer wall surface. The lamp body fixing structure includes a fixing plate and a fixing plate surface of the LED lamp housing. In order to have a good light-emitting efficiency and a light-emitting angle, the present invention optimizes the concentrating edge to make the condensed side have a convex peak shape.

In a preferred embodiment of the present invention, the inner side of the astigmatism protrusion is provided with a recess for accommodating the LED, and the wall surface shape of the pit is semi-spherical, cylindrical, the top surface is a concave circular arc, and the top surface is a convex arc. Any of the cylindrical shapes of the face.

A preferred mode of the invention is: The lens is made of a PC or PMMA transparent material.

The preferred embodiment of the present invention is: a mounting slot is arranged on the fixing plate surface, and a mounting hole is arranged on the fixing frame; the mounting sliding groove and the mounting hole have a fixing bolt fixedly connecting the fixing plate surface and the fixing frame; The port has a grooved edge for the bolt to be clamped inwardly towards the closed slot. This groove edge is also understood to be the mounting edge.

The preferred embodiment of the present invention is: the space inside the casing is divided into two groups of independent parts side by side, each of which has a separate lighting module installed in the space; the mounting plate of the casing is provided with two sets of installation chutes. The holder is a bridge that includes two sets of mounting holes.

A preferred embodiment of the present invention is shown in FIG. 1 to FIG. 3. The lens for the LED tunnel lamp has a recess (lens cavity) 2102 in the middle of the first side surface 21000, and an LED is mounted on the center of the pit 2102. At this point, the pit wall surface of the pit 2102 constitutes the incident surface of the lens. The first side 21000, the third side 21002 and the fourth side 21003 constitute an exit surface, the first side of the lens The 21,000 central arcuate projection forms a pillow-shaped exit surface. The so-called pillow shape is generally an elongated body shape with curved ends at both ends, and the central portions of both sides of the elongated body are slightly concave toward the inner side, and the curved surface of the upper surface is convex, and the first side of the lens surrounds the concave surface. The pit 2102 is provided with a total reflection surface 21010 that reflects light toward the fourth side 21003 of the exit surface. The total reflection surface may be an axisymmetric and asymmetrical structure. The lens is preferably made of a transparent material having a very good light transmission property, such as PC or PMMA.

As shown in FIG. 4, it is a cross-sectional view of a second embodiment of the lens for the LED tunnel lamp of the present invention, which is different from the lens shown in FIG. 3 in that: the pit is a cylindrical shape, and the LED lamp can be installed at the center of the pit, The light emitted from the cylindrical top surface is refracted and directly emitted through the lens exit surface, and the light emitted from the cylindrical side surface is totally reflected by the total reflection surface and then emitted from the lens exit surface. In addition, on the basis of the cylindrical recess 2102 of the lens shown in FIG. 4, the top surface of the dimple 2102 can also be designed as a circular arc surface, which can be a concave circular arc surface (as shown in FIG. 5). The third embodiment shown) is either an upwardly convex circular arc surface (fourth embodiment as shown in Fig. 6). These differently shaped pit designs can be used with LEDs of different light distributions and do not affect the concentrating effect.

As shown in Fig. 7, it is a spot diagram of an LED lamp using such a lens. It can be seen that the formed spot is substantially rectangular, and can effectively meet the lighting requirements for different lighting requirements in the direction of the two vertical axes. , such as road lighting. As shown in Fig. 8, for the illuminance distribution diagram of the LED lamp using the lens, it can be seen that the difference in illumination between the center and the periphery of the spot is small, that is, the illumination uniformity is good.

The specific structure of the LED lamp of the present invention is shown in Figs. 9 to 15 . The array of LEDs 5 is mounted on the thermally conductive substrate 24, and is mechanically coupled, electrically connected, and thermally conducted through the thermally conductive substrate 24. The thermally conductive substrate 24 is attached to the lower surface of the heat sink by means of a thermally conductive insulating pad 23. A substrate gasket 22 is provided on the periphery thereof.

9 and 10, the fixed arm 1 is connected to the movable arm 2 by an adjusting screw 16, and the movable arm 2 It is attached to the bridge 3 by screws at the bottom. The bridge 3 has two sets of bridge fixing edges 50, and the bridge fixing edges 50 are fixed to the fin frame 17 by fixing nuts 18 and fixing bolts 19. The frame body 17 has a longitudinal mounting slot 20, and the slot of the mounting slot has an inwardly extending mounting edge. The fixing bolt 19 and the fixing nut 18 securely connect the bridge frame to the frame body through the clamping mounting edge and the bridge fixing edge 50. stand up.

The heat sink is provided with a plurality of heat dissipating fins, and the bottom surface of the heat sink is provided with a groove (there are two heat sink left heat sinks 14 and a right heat sink 4 in FIG. 10), and the heat conductive substrate 24 is mounted on the groove by means of the heat conductive insulating pad 23. At the bottom, the array of LEDs 5 is mounted on the thermally conductive substrate 24, and the mechanical connection, electrical connection and thermal conduction are realized by the thermally conductive substrate. The lens cover 13 is mounted on the outer side of the array of LEDs 5, and each LED on the thermally conductive substrate 24 corresponds to the lens. The center of the pit of a lens on the lampshade.

Referring to FIG. 10, the left and right sides of the frame are respectively a left heat sink 14 and a right heat sink 4. The first lighting module power board 7 and the second lighting module power board 6 are respectively placed in two through holes in the radiator frame, Both ends of the hole are sealed with a gasket 8 to prevent rainwater from penetrating into the circuit board. The lens cover 13 is placed in a recess in the bottom of the heat sink and is pressed and fixed by the panel 12. The front end gasket 8 is fixed to the heat sink through the bottom cover 9, and the bottom cover has a junction box. The junction box has a junction box cover 11 and a junction box gasket 10 is sealed between the cover and the junction box.

The embodiment of Figure 10 has two lighting modules, each of which operates independently and does not affect each other.

As shown in FIG. 9, the installation of the chute 20 makes the practical application of the present invention very convenient, and the mounting chute 20 can be used for rail installation, and the luminaire can be arbitrarily combined flexibly and conveniently. As shown in Fig. 9, the figure also has a mounting chute on the radiator between the bridges separately, which can more conveniently fix the lamp body, especially when several such lamps are used side by side. Two adjacent mounting chutes are connected by a smaller bridge, and the other mounting chute can be used to connect with other such lamps to meet the needs. Therefore, different mounting brackets can be configured for different purposes to meet various usage requirements. Figure 17 is a plan view of the LED tunnel light of the present invention projected on the road surface. Since the tunnel light is installed at a certain angle of inclination, usually 0 to 45 degrees, the spot projected on the road surface is tilted by the lamp. The effect is slightly trapezoidal. Figure 18 shows the illuminance distribution of the LED tunnel light on the road surface. Although the shape of the spot is affected by the tilting installation of the luminaire, the illuminance distribution is basically unaffected. The illuminance distribution in the area directly under the luminaire and in other areas of the illuminant is still relatively Evenly. In addition, the illumination on the side directly below the luminaire is slightly higher than other areas, which is also in line with the requirement that the fast lane illumination in the road illumination is higher than the slow lane.

Claims

Rights request

What is claimed is: 1. An LED tunnel lamp comprising a housing, at least one illumination module mounted on the housing; the housing comprising a lamp body fixing structure; the illumination module comprising a lens covered on the LED lamp, wherein the lens comprises a lens a portion, a astigmatism protrusion in the shape of a pillow, and a condensing edge on both sides of the astigmatism protrusion; the astigmatism protrusion includes a light incident surface of the inner wall surface and a light exit surface of the outer wall surface; the lamp body fixing structure includes a fixing frame And a fixing plate surface of the LED lamp housing, wherein: the condensing edge has a convex peak shape.

2. The LED tunnel lamp according to claim 1, wherein: the inner side of the astigmatism protrusion is provided with a recess for accommodating the LED, and the wall surface of the pit is semi-spherical, cylindrical, and the top surface is concave. Any one of a cylindrical shape having a curved surface and a cylindrical shape having a convex arc surface.

3. The LED tunnel light of claim 1, wherein: the lens is made of a PC or PMMA transparent material.

The LED tunnel lamp according to claim 1, wherein: the fixing plate surface is provided with a mounting chute, and the fixing frame is provided with a mounting hole; the mounting chute and the mounting hole have a built-in fixing plate surface The fixing bolt is fixedly connected with the fixing bracket; the slot of the mounting chute has a groove edge for the bolt clamping to the inwardly facing notch.

The LED tunnel lamp according to claim 4, wherein: the space inside the casing is divided into two groups of independent parts arranged side by side, and an independent lighting module is installed in the space of each of the independent parts; Two sets of installation chutes are arranged on the fixed plate surface, and the fixed frame is a bridge frame comprising two sets of mounting holes.