CN110873320A

CN110873320A - Projecting lamp

Info

Publication number: CN110873320A
Application number: CN201911208588.9A
Authority: CN
Inventors: 林琼榕; 陈海强
Original assignee: Special Heat Exchange Technology (zhongshan) Co Ltd
Current assignee: Special Heat Exchange Technology (zhongshan) Co Ltd
Priority date: 2019-11-30
Filing date: 2019-11-30
Publication date: 2020-03-10

Abstract

The application discloses a projection lamp, which comprises a lamp body which can be horizontally placed with the ground, wherein the lamp body is provided with a light outlet, a light source is arranged in the lamp body, and the light source can output light output upwards deviating from the horizontal direction in the lamp body; the reflector is arranged on the light emitting side of the light source, the inner side of the reflector is a concave free-form surface and is configured to be an incident surface facing the light source, the incident surface is communicated with an emergent port arranged at one end of the reflector along the reflection direction, and the output light of the light source is reflected by the incident surface to form emergent light; and the lens is arranged at the exit port to uniformly refract the emergent light to form projection light with an optical axis deviating from the horizontal line of the lamp axis to be projected downwards towards a target area. According to the invention, after the side surface light distribution is carried out on the reflector for side reflection, glare refraction is carried out through the forward lens, the defect that the light flux output by the lamp is lower in light projecting rate in a projection area is overcome, the upward light is effectively inhibited, and the environmental light pollution is reduced.

Description

Projecting lamp

Technical Field

The invention relates to the technical field of lamp illumination, in particular to a projection lamp applied to roadway surface illumination.

Background

The LED down lamp or the spot lamp is applied to the LED down lamp or the spot lamp for roadway surface illumination at present, the floodlight or the rotational symmetry light distribution mode that an LED lamp source directly irradiates the roadway is usually adopted in the illuminating lamp effect, but the traditional light distribution mode often causes visual fatigue of a driver and light pollution due to the fact that the brightness distribution is uneven and the glare phenomenon exists; when the traditional lamp is installed on a road surface and the height is 5-6 m, only 30% of the maximum output luminous flux of the lamp is concentrated in a two-lane range of 30 m in front of the lamp, the illumination range and the light utilization rate are low, and light resource waste is caused. After the light is distributed to the reflector through the side surface and reflected, glare refraction is carried out through the forward lens, the defect that the light projection rate of the light flux output by the lamp in a projection area is low is overcome, upward light is effectively inhibited, and environmental light pollution is reduced.

Disclosure of Invention

Objects of the invention

The invention aims to provide a projection lamp capable of quickly dissipating heat, which overcomes the defect that the light flux output by a lamp is low in light projecting rate in a projection area after being subjected to side reflection by distributing light to a reflector from a side surface and then being subjected to glare refraction by a forward lens, effectively inhibits the upward light and reduces the environmental light pollution.

(II) technical scheme

In order to achieve the above object, the present invention adopts the following technical solution to provide a projector lamp with rapid heat dissipation, including:

the lamp body is provided with a light outlet, a light source is arranged in the lamp body, and the light source can output light which deviates from the horizontal direction upwards in the lamp body;

the reflector is arranged on the light emitting side of the light source, the inner side of the reflector is a concave free-form surface and is configured to be an incident surface facing the light source, the incident surface is communicated with an emergent port arranged at one end of the reflector along the reflection direction, and the output light of the light source is reflected by the incident surface to form emergent light;

and the lens is arranged at the exit port to uniformly refract the emergent light to form projection light with an optical axis deviating from the horizontal line of the lamp axis to be projected downwards towards a target area.

Further, the lens axis is located below the lamp axis and parallel to the lamp axis in a horizontal direction and coincides with the lamp axis in a vertical direction.

Further, when the lamp body is placed to be horizontally parallel to the ground, the reflector is arranged above the light source to enable the incident surface to point to the road surface, the emergent port points to the driving direction, and the lens is vertically arranged to emit light along the driving direction.

Further, the light source is obliquely installed in the lamp body to output the output light in a direction deviating from a horizontal upper direction by 15 degrees.

Furthermore, the emergent light enters the light inlet face of the lens, a beam angle formed on the light outlet face is 18 degrees in the vertical direction, a beam with 24 degrees in the horizontal direction points to the projected light on the road surface along the driving direction, and the projection angle of the projected light is 20 degrees downwards from the horizontal line of the lamp axis.

Furthermore, the lens comprises a light incident surface and a light emergent surface, wherein the light incident surface is configured into a compound eye structure formed by splicing a plurality of hemispheroids, and the hemispheroids simultaneously receive the emergent light and enable the emergent light to be uniformly refracted and then penetrate through the light emergent surface to emit the projection light.

Further, the sphere radius of the hemisphere comprises 2.5 mm; the distance between the centers of the two adjacent hemispheres at least comprises 2.5mm and 2.5 mm.

Further, the lens comprises a concave lens, the light incident surface is configured to be a concave surface facing the light source to receive the emergent light, and the light emergent surface is configured to be a light-transmitting convex surface to emit the projection light.

Further, the lens is disposed at a position in the range of 5mm to 35mm in front of the exit port.

Further, the reflector is disposed at a position ranging from 0mm to 47mm above the light source.

Further, the light source is mounted on a conductor configured with a plurality of heat dissipation members capable of conducting heat generated by the light source; the heat dissipation parts are connected inside the conduction part to directly receive the heat of the light source and uniformly diffuse the heat to the periphery.

(III) advantageous effects

The technical scheme of the invention has the following beneficial technical effects:

the LED lamp comprises a lamp body, a light source, a reflector and a lens, wherein the lamp body is internally provided with the light source, the light source can output light deviating from the horizontal upward direction in the lamp body, the reflector is arranged in front of the light outlet of the light source, so that the reflector can reflect the light source from the horizontal upward direction to the light outlet direction to form horizontally downward emergent light, the light intensity of the LED lamp source is changed, after the side reflection is carried out through the side light distribution of the reflector, the defect that the light output flux of the lamp is lower in light projecting rate in a projecting area is overcome through glare refraction through a forward lens, the;

the lens is configured at the exit port of the reflector to uniformly refract the emergent light to form projected light with an optical axis deviating from the horizontal line of the lamp axis by 20 degrees downwards, and the projected light is projected towards a target area; when the lamp is installed on the road surface at a height of about 6 meters, 80% of the light flux output by the lamp can be concentrated in the range of two lanes 30 meters in front of the lamp, and the light utilization rate is high. The invention has the characteristics of scientific structure, ingenious design, energy conservation, environmental protection, high efficiency, economy, stable service performance, high light concentration and low light pollution.

Drawings

FIG. 1 is a schematic perspective view of a projector according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the light output of a projector according to an embodiment of the invention;

FIG. 3 is a schematic view of a mounting structure of a reflector according to an embodiment of the present invention;

FIG. 4 is a schematic view of the structure of FIG. 3 from another perspective;

FIG. 5 is a schematic view of a mounting structure of a light source according to an embodiment of the present invention;

FIG. 6 is a schematic view of another mounting structure of a light source according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a reflector according to an embodiment of the invention;

FIG. 8 is a schematic view of a light distribution curve of the projector lamp in an embodiment of the present invention;

FIG. 9 is a schematic view of a road projection of the projector lamp in an embodiment of the invention;

FIG. 10 is a road flare map of a projector lamp according to an embodiment of the present invention;

FIG. 11 is a diagram illustrating the front spot effect of the projector lamp in accordance with one embodiment of the present invention;

FIG. 12 is a diagram of another road flare effect of the projector lamp in an embodiment of the invention.

Reference numerals:

the LED lamp comprises a lamp body 1, a light outlet 11, a light source 2, a reflector 3, an incident surface 31, an exit port 32, a lens 4, an incident surface 41, an exit surface 42, a hemisphere 43 and a conducting piece 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout.

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., it indicates that the orientation and positional relationship are based on those shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of the invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the feature, and in the description of the invention, "at least" means one or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the present invention, unless otherwise specified and limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.

The technical scheme and the beneficial effects of the invention are clearer and clearer by further describing the specific embodiment of the invention with the accompanying drawings of the specification. The embodiments described below are exemplary and are intended to be illustrative of the invention, but are not to be construed as limiting the invention.

Therefore, the projection lamp capable of dissipating heat quickly is provided, after side reflection is carried out from the side light distribution to the reflector, glare refraction is carried out through the forward lens, the defect that the light projection rate of the lamp output luminous flux in a projection area is low is overcome, upward light is effectively inhibited, and environmental light pollution is reduced.

The invention discloses a projecting lamp in this embodiment, which comprises a lamp body 1 capable of being horizontally placed on the ground, a light source 2, a reflector 3 and a lens 4, specifically, as shown in fig. 1-11, the lamp body 1 can be horizontally placed, and the lamp body 1 is provided with a light outlet 11, the light outlet 11 can laterally project light on the lamp body 1 along the horizontal plane, specifically, the lamp body 1 is internally provided with the light source 2, the light source 2 can output light deviated from the horizontal direction and upward in the lamp body 1, as shown in fig. 1-6, the light source 2 is connected and installed on an inclined conducting piece 5 to output light deviated from the horizontal direction and upward, wherein, the side surface of the conducting piece 5 can be inclined for installing the light source 2, the whole conducting piece 5 can be inclined for installing the light source 2, as long as the installation condition can realize that the light source 2 can output light deviated from the horizontal direction and upward in the lamp body 1, all can be within the protection scope of the technical scheme of the invention; the reflector 3 is arranged on the light emitting side of the light source 2, the inner side of the reflector is a concave free-form surface and is configured to face an incident surface 31 of the light source 2, the incident surface 31 is communicated with an emitting port 32 arranged at one end of the reflector along the reflection direction, and the output light of the light source 2 is reflected by the incident surface 31 to form the emergent light which inclines downwards; the lens 4 is disposed at the exit port 32 to uniformly refract the exit light to form projection light having an optical axis deviating from the horizontal line of the lamp axis downward toward a target area.

As shown in fig. 8, a light distribution curve diagram of the incident surface 31 of the reflector 3 is shown, wherein the total collected power is 1000.0lm, the efficiency is 0.74983, and the maximum intensity is 8755.5cd, the output light of the light source 2 is reflected by the incident surface 31 with the intensity to perform side light extraction to suppress the upward light, and form an obliquely downward emergent light to directly suppress the glare caused by the upward light.

As shown in fig. 2 to 6, the light source 2 is mounted on a conductor 5, the conductor 5 being provided with a plurality of heat dissipating members 6 capable of conducting heat generated by the light source 2; the plurality of heat dissipation members 6 are engaged inside the conduction member 5 to directly receive the heat of the light source 2 and uniformly diffuse the heat to the periphery. Further, as shown in fig. 6, one end of the reflector 3 abuts against the conduction member 5 at the light exit position of the light source 2, and the other end is provided with an exit port 32 abutting against the lens 4 to be fixed in the lamp body 1, so that the reflector 3 forms a light refraction channel between the light source 2 and the lens 4, and the adoption of a side light exit mode can effectively inhibit the upward light, reduce the environmental light pollution, and directly inhibit the glare caused by the upward light, thereby reducing the uncomfortable feeling of the driver when the driver passes through the illumination area, realizing the anti-glare effect, and avoiding the light pollution.

In the present embodiment, as shown in fig. 1, the lamp body 1 has a substantially cylindrical shape, and has a simple overall structure design, high heat dissipation, high stability, and uniform illumination brightness. In any alternative embodiment of the present invention, the light source 2 may be an LED lamp source, the light source 2 is mounted on a conductive member having a conductive heat capacity, the conductive member 5 includes a heat conductive material, and the heat conductive material includes a metal aluminum material, specifically, an aluminum block or an aluminum plate, since aluminum is a good thermal conductor, its heat conductive capacity is 3 times larger than that of iron, and it is an excellent heat dissipation material, and it can provide a stable heat conductive environment for the light source 2.

The projection lamp arranged in the design scheme can be used on a traffic light pole, the irradiation range is the area near the front lower part of two lanes, and light pollution cannot be generated and the light cannot directly irradiate the eyes of oncoming vehicle drivers. In some embodiments, when the lamp is installed on the road surface at a height of about 6 meters, 80% of the luminous flux output by the lamp can be concentrated in a two-lane range of 30 meters in front of the lamp, and the light utilization rate is high.

In some embodiments, the position of the lens 4 may be set with reference to: the lens axis is located below the lamp axis and parallel to the lamp axis in the horizontal direction and coincides with the lamp axis in the vertical direction. The lens axis is parallel to the horizontal direction and below the lamp axis, enabling the lens 4 to direct the outgoing light at the exit port 32 of the reflector 3 at an angle of light exit obliquely downward, which may be set between 40 degrees and 75 degrees, to refract the outgoing light uniformly to form a projection light with an optical axis deviating from the horizontal line of the lamp axis downward toward the target area. Therefore, when the lamp is installed on the road surface at a height of about 6 meters, 80% of the light flux output by the lamp can be concentrated in a high utilization rate within a range of two lanes 30 meters in front of the lamp.

Under the above technical solution, preferably, in some embodiments, when the lamp body 1 is placed horizontally parallel to the ground, the reflector 3 is configured above the light source 2 so that the incident surface 31 points to the road surface, the exit port 32 points to the driving direction, and the lens 4 is vertically arranged to emit light along the driving direction. The lens 4 receives the emergent light and uniformly refracts the emergent light to form projection light which inclines downwards.

The light source 2 of the present invention in some embodiments is mounted obliquely within the fixture to output light in a direction 15 degrees off horizontal upwards. Thus, the light source 2 outputs output light in a direction deviated 15 degrees from the horizontal direction, the output light deviated 15 degrees from the horizontal direction is refracted by the reflector 3 to form output light, the output light is incident on the light incident surface 41 of the lens, projection light with a beam angle of 18 degrees in the vertical direction and a beam angle of 24 degrees in the horizontal direction and directed to a road surface along the traveling direction is formed on the light emitting surface 42, specifically, the output light output with the beam angles of 18 degrees in the vertical direction and 24 degrees in the horizontal direction is received, and the reflector 3 can project the projection light with an optical axis deviated 20 degrees from the horizontal line of the lamp axis and directed downward toward a target area. Specifically, fig. 9-12 are schematic road surface projection diagrams of the projector according to the present invention, fig. 10 is a schematic road surface spot effect diagram of the projector according to the present embodiment, fig. 12 is another schematic road surface spot diagram of the projector according to the present embodiment to show road surface spot effect diagrams of the projector according to the present embodiment at each projection distance of the lamp on the road surface, and fig. 11 is a front spot effect diagram of the projector according to the present embodiment at a distance of about 1m from the lamp in the forward direction. Thus, as shown in fig. 9, when the lamp of the present embodiment is installed at a height of about 6 m on a road surface, 80% of the lamp output luminous flux can be concentrated at a high utilization rate in a two-lane range of 30 m in front of the lamp.

As shown in fig. 7, in any embodiment of the present invention, specifically: the lens 4 includes an incident surface 41 and an exit surface 42, the incident surface 41 is configured as a compound eye structure formed by splicing a plurality of hemispheroids 43, and the plurality of hemispheroids 43 simultaneously receive the emergent light and uniformly refract the emergent light to exit through the exit surface to form final projection light. The hemispheroids 43 are uniformly distributed on the light incident surface 41 in a convex shape to form a plurality of regular small lenses for uniform light distribution, so that emergent light can form soft light to irradiate a projection area when a projection angle is changed, strong light pollution can be effectively reduced when the upward light is restrained, discomfort of light irradiation when a driver passes through the illumination area is avoided, and an anti-dazzle effect is realized. Specifically, in these embodiments, the radius of the hemisphere 43 comprises 2.5 mm; the distance between the centers of two adjacent hemispheres 43 is at least 2.5mm and 2.5 mm.

In some embodiments, the lens 4 includes a concave lens, the light incident surface 41 is configured as a concave surface facing the light source to receive the emergent light, and the light emitting surface 42 is configured as a light-transmissive convex surface to emit the projection light.

In the present invention, the lens 4 must be disposed in front of the exit port 32 to receive the exit light, and specifically, the lens 4 is disposed at a position in the range of 5mm to 35mm in front of the exit port 32. Specifically, the reflector 3 is disposed at a position in the range of 0mm to 47mm above the light source 2. The reflector 3 and the lens 4 can be debugged according to specific installation conditions and installation environments in the arrangement range, so that when the lamp is installed on a road, at least 80% of output luminous flux of the lamp can be concentrated in the range of two lanes 30 meters in front of the lamp, and the light utilization rate is high.

In summary, the present invention is directed to a projection lamp, which can perform glare refraction to overcome the defect of low light projection rate of the light flux output by the lamp in the projection area, effectively suppress the upward light, reduce the environmental light pollution, effectively and directly suppress glare, reduce the discomfort of the driver caused by light irradiation when the driver passes through the illumination area, achieve the anti-glare effect, avoid light pollution, and have high light utilization rate. The invention has the characteristics of scientific structure, ingenious design, energy conservation, environmental protection, high efficiency, economy, stable service performance, high light concentration and low light pollution.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A projecting lamp, includes the lamp body that can place with ground level, its characterized in that:

2. A projector as claimed in claim 1, wherein: the lens axis is located below the lamp axis and parallel to the lamp axis in the horizontal direction, and coincides with the lamp axis in the vertical direction.

3. A projector as claimed in claim 1 or 2, wherein: when the lamp body is placed to be horizontally parallel to the ground, the reflector is arranged above the light source to enable the incident surface to point to the road surface, the emergent port points to the driving direction, and the lens is vertically arranged to emit light along the direction of driving.

4. A projector as claimed in claim 3, wherein: the light source is obliquely installed in the lamp body to output the output light in a direction deviating 15 degrees from a horizontal upper direction.

5. A projector as claimed in claim 4, wherein: the emergent light enters the light inlet face of the lens, a beam angle formed on the light outlet face is 18 degrees in the vertical direction, a beam with 24 degrees in the horizontal direction points to the projected light on the road surface along the driving direction, and the projection angle of the projected light is 20 degrees below the horizontal line of the light axis deviated.

6. A projector as claimed in claim 1, 4 or 5, wherein: the lens comprises a light incoming surface and a light outgoing surface, wherein the light incoming surface is configured into a compound eye structure formed by splicing a plurality of hemispheroids, and the hemispheroids receive the emergent light simultaneously and enable the emergent light to be transmitted through the light outgoing surface after being uniformly refracted to project light.

7. A projector as claimed in claim 6, wherein: the sphere radius of the hemisphere comprises 2.5 mm; the distance between the centers of the two adjacent hemispheres at least comprises 2.5mm and 2.5 mm.

8. A projector as claimed in claim 7, wherein: the lens comprises a concave lens, the light inlet surface is configured into a concave surface to face the light source to receive the emergent light, and the light outlet surface is configured into a light-transmitting convex surface to emit the projection light.

9. A projector as claimed in claim 8, wherein: the lens is arranged in front of the exit port at a position within a range of 5mm-35 mm.

10. A projector as claimed in claim 9, wherein: the reflector is arranged at a position in the range of 0mm-47mm above the light source.