CN212408409U

CN212408409U - Light beam angle adjustable LED light projecting lighting device

Info

Publication number: CN212408409U
Application number: CN202021627168.2U
Authority: CN
Inventors: 王火炎; 曾有为; 兰慧慧
Original assignee: Shenzhen Dart Illumination Co ltd
Current assignee: Shenzhen Date Culture Technology Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-01-26
Anticipated expiration: 2030-08-06

Abstract

The utility model discloses a light beam angle adjustable LED light projecting lighting device, which comprises a lifting platform, a plurality of LED lenses and a plurality of lamp beads arranged at the bottom of the lifting platform, wherein each lamp bead is positioned under one lens, the lens comprises a light-emitting surface positioned at the top and a first reflecting surface positioned at the side part, the bottom of the lens is sunken to form a first incident surface, a second reflecting surface, a second incident surface and a third incident surface, the first incident surface reflects the light projected on the first incident surface to the first reflecting surface, the second incident surface reflects the light projected on the second incident surface to the second reflecting surface, the first reflecting surface and the second reflecting surface respectively reflect the reflected light to the light-emitting surface and enable most light rays to exit from the light-emitting surface, the lifting platform can adjust the vertical relative distance between the lens and the lamp beads through vertical lifting, thereby changing the light beam angle of the light rays on the light-emitting surface, the utility model discloses not only can adjust the adjustable range of beam angle and beam angle great, the light spot is even in the focusing within range.

Description

Light beam angle adjustable LED light projecting lighting device

Technical Field

The utility model relates to a projecting lamp field especially relates to a LED light projecting lighting device of changeable beam angle.

Background

The landscape lighting is an outdoor lighting project which has the functions of lighting, artistic decoration and environment beautification. Landscape lighting can be divided into road landscape lighting, garden square landscape lighting, and building landscape lighting. Because landscape lighting usually covers a wide range, has many types of doors, needs whole planning thinking, and also considers key nodes therein, such as individual key lighting of scenic scenes, buildings and the like, therefore, lighting methods are various, and the choice of illuminators is also complex, so that the requirement of large-scale landscape lighting engineering on the whole capability of design and construction is higher.

The projection lamp is a lamp with the illumination intensity on the appointed illuminated surface higher than that of the surrounding environment, is also called as a spotlight and is mainly used for large-area operation sites, mines, building outlines, stadiums, overpasses, monuments, parks, flower beds and the like. Thus, almost all large area lighting fixtures used outdoors can be considered as floodlights. The light emergent beam angle of the projection lamp is wide and narrow, and the variation range is between 1 degree and 120 degrees. The LED projection lamp is mainly applied to illumination of special facilities such as single buildings, exterior walls of historical buildings, greening landscape illumination, billboard illumination and the like, and atmosphere illumination of entertainment places such as bars, dance halls and the like. Building facades are often employed. The LED lamp is mainly used for architectural decoration and illumination, and is also used for outlining large buildings. The LED light projector has the characteristics of energy conservation, high lighting effect, rich colors, long service life and the like, so that the LED light projector is widely used.

The LED projection lamp has a plurality of appearance types, and is suitable for being installed and used in landscape places with different shapes due to the round, square, strip and other appearances. The LED projection lamp irradiates light on a lighted surface, can be used for decorative lighting of landscape places and can also be used for outlining large buildings, but the traditional LED projection lamp is generally only provided with a lens with a beam angle (light-emitting angle) for permanent use and can only meet the requirements of certain specific use occasions, and because the traditional LED projection lamp achieves the IP65 protection grade, the adopted lens and the lamp plate are fixedly installed and cannot move. Therefore, the LED projection lamp is single in lighting mode, and the difference requirements brought by flexible and changeable actual construction application scenes cannot be met. For example, landscape greening trees differ in height, and when the LED projection lamp of different beam angles is needed, the whole lamp is needed to be replaced, and the replacement of the lamp inevitably increases the use cost and causes long replacement period. And also generates much unnecessary waste. Such as necessarily resulting in increased inventory of enterprise light fixtures.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, a beam angle adjustable LED light projector lighting device is provided.

The utility model provides a technical scheme that its technical problem adopted is: an LED light projection lighting device with an adjustable beam angle is constructed, and the LED light projection lighting device comprises a lifting platform, a plurality of LED lenses and a plurality of lamp beads, wherein the plurality of LED lenses and the plurality of lamp beads are arranged at the bottom of the lifting platform;

the LED lens comprises a light-emitting surface and a first reflecting surface, the light-emitting surface is located at the top, the first reflecting surface is located at the side, the bottom of the LED lens is recessed to form a first groove and a second groove, the first groove is located above the lamp bead, the second groove is arranged on the second reflecting surface, the second groove comprises a second incident surface and a third incident surface, the second incident surface is located at the side, the first incident surface is used for refracting all the light projected onto the first incident surface, the second incident surface is used for refracting all the light projected onto the second incident surface to the second reflecting surface, and the first reflecting surface and the second reflecting surface are respectively used for reflecting the refracted light onto the light-emitting surface and enabling most of the light to be emitted from the light-emitting surface;

the lifting platform can adjust the vertical relative distance between the LED lens and the lamp beads through vertical lifting, and further change the beam angle of the light emergent surface.

Preferably, the first reflecting surface and the second reflecting surface are in a bowl shape with upward openings, the first incident surface and the second incident surface are circular table surfaces, and the third incident surface is a downward convex curved surface or an upward convex curved surface;

the third incident surface is used for refracting the light near the optical axis that the lamp pearl sent to go out after refracting the plain noodles, first incident surface and the second incident surface is used for refracting the light of the skew optical axis that the lamp pearl sent.

Preferably, the top edge of the first reflection surface is higher than the top edge of the first incident surface, the top edge of the first incident surface is higher than the top edge of the second incident surface, and the bottom edge of the first incident surface is lower than the bottom edge of the second incident surface.

Preferably, the light emitting surface comprises an upward convex curved surface positioned at the center and a rounded table top connected with the edge of the upward convex curved surface.

Preferably, the lifting platform is made of the same material as the plurality of LED lenses, and the lifting platform and the plurality of LED lenses are integrally formed.

Preferably, the lifting platform comprises a plane plate and a connecting shaft vertically connected with the bottom of the plane plate, the plurality of LED lenses are located at the bottom of the plane plate and integrally formed with the plane plate, and the plane plate and the connecting shaft are integrally formed or assembled together.

Preferably, the plurality of lamp beads are fixed on a circuit board, the circuit board is positioned in a space below the plane board, and the connecting shaft penetrates through the circuit board in a non-contact manner;

the lamp beads are light sources with beam angles larger than 90 degrees or lambertian light sources.

Preferably, the device further comprises a shell, the interior of the shell is divided into an upper cavity and a lower cavity through a partition plate, the circuit board is fixed above the partition plate, the plane board is located in the upper cavity, and the connecting shaft penetrates through the circuit board and the partition plate in a non-contact mode and then extends into the lower cavity to be connected with the motor or an external knob.

Preferably, a glass sheet is arranged at an opening of the upper cavity and located above the plane plate, and black baking varnish is silk-screened on the surface of the glass sheet and a plurality of blank areas corresponding to light-emitting surfaces of the LED lenses are reserved.

Preferably, the periphery of each lamp bead is further provided with a reflecting sleeve, and the bottom end of the LED lens is movably sleeved in the reflecting sleeve.

The utility model discloses a beam angle adjustable LED light projector lighting device has following beneficial effect: the utility model discloses a lens provide inside, two outer plane of reflection, be equivalent to two lens complex together, can adjust through lift platform LED lens with vertical relative distance between the lamp pearl, the change of vertical relative distance can change the light projection angle of single refracting surface on the one hand, on the other hand must change the distribution condition of the light of projecting on first incident surface, the second incident surface, finally can change the beam angle of going out the plain noodles, compare in traditional projecting lamp, not only can adjust beam angle and realize focusing, and beam angle's adjustable range is great, the spot is even in focusing within range, and there is not miscellaneous light, beam angle can be adjusted according to on-the-spot actual need, a lamps and lanterns satisfy the scene requirement of multiple difference.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts:

fig. 1 is a schematic structural diagram of an embodiment of the beam angle adjustable LED projection lighting device of the present invention;

FIG. 2 is a schematic view of the LED lens mounting at two different angles;

FIG. 3 is a schematic view of an LED lens at two different angles;

FIG. 4 is a cross-sectional view of an LED lens;

FIG. 5 is a comparison of beam angles for two heights of adjusted LED lenses;

fig. 6 is a schematic structural diagram of another embodiment of the beam angle adjustable LED light projecting lighting device of the present invention;

fig. 7 is a cross-sectional view of another embodiment.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Exemplary embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The terms including ordinal numbers such as "first", "second", and the like used in the present specification may be used to describe various components, but the components are not limited by the terms. These terms are used only for the purpose of distinguishing one constituent element from other constituent elements. For example, a first component may be named as a second component, and similarly, a second component may also be named as a first component, without departing from the scope of the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model discloses general thinking is: on the one hand, with LED lens design for being equivalent to inside and outside two lens compound together, on the other hand can adjust LED lens through lift platform with the vertical relative distance between the lamp pearl, the change of vertical relative distance can change the light projection angle of single refracting surface on the one hand, on the other hand must change the distribution condition of the light of throwing on first incident surface, second incident surface, can change the beam angle of going out the plain noodles finally, also luminous angle, compare in traditional projecting lamp, not only can adjust the beam angle and the adjustable range of beam angle is great.

In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the specific features in the embodiments and examples of the present invention are detailed descriptions of the technical solutions of the present application, but not limitations of the technical solutions of the present application, and the technical features in the embodiments and examples of the present invention can be combined with each other without conflict.

Referring to fig. 1-2, the light beam angle-adjustable LED light projection lighting device of this embodiment includes a housing 1, a glass sheet 2 located at an opening at the top of the housing 1, a lifting platform 4 located in the housing 1, a plurality of LED lenses 5 arranged at the bottom of the lifting platform 4, and a plurality of light beads. Each of the lamp beads is positioned right below one of the LED lenses 5. The light source with the beam angle larger than 90 degrees is preferably selected as the lamp bead, the light source is preferably a Lambert-type light source, the beam angle of the Lambert-type light source is 120 degrees, and the lamp bead is isotropic and is an ideal light type.

Referring to fig. 3 to 4, the LED lens 5 includes a light emitting surface on the top and a first reflecting surface 51 on the side, the bottom of the LED lens 5 is recessed to form a first groove and a second groove directly above the lamp bead, the first groove includes a first incident surface 52 on the side and a second reflecting surface 53 on the top, the second groove is disposed on the second reflecting surface 53, and the second groove includes a second incident surface 54 on the side and a third incident surface 55 on the top. Specifically, the bottom edge of the first reflection surface 51 is flush with or directly connected to the bottom edge of the first incident surface 52, the second reflection surface 53 connects the top edge of the first incident surface 52 to the bottom edge of the second incident surface 54, and the top edge of the second incident surface 54 connects the edge of the third incident surface 55. The top edge of the first reflection surface 51 is higher than the top edge of the first incident surface 52, the top edge of the first incident surface 52 is higher than the top edge of the second incident surface 54, and the bottom edge of the first incident surface 52 is lower than the bottom edge of the second incident surface 54.

The first incident surface 52 is configured to refract all the light rays projected thereon to the first reflecting surface 51, the second incident surface 54 is configured to refract all the light rays projected thereon to the second reflecting surface 53, the first reflecting surface 51 and the second reflecting surface 53 are respectively configured to reflect the refracted light rays to the light emitting surface and enable most of the light rays to exit from the light emitting surface, and the lifting platform 4 can adjust a vertical relative distance between the LED lens 5 and the lamp bead by vertical lifting, so as to change a beam angle of the light emitting surface.

More specifically, first plane of reflection 51, second plane of reflection 53 are the bowl form that the opening is up, and the camber of first plane of reflection 51 is less than the camber of second plane of reflection 53, first plane of incidence 52, second plane of incidence 54 are the mesa, third plane of incidence 55 is protruding curved surface or protruding curved surface down, it includes the protruding curved surface 56 that is located the center and the radius mesa 57 of being connected with protruding curved surface 56 bottom edge to go out the plain noodles, prevents that central light is too bright, guarantees that light is as even as possible. The shape and size of first recess, second recess and the high range that lift platform 4 can be adjusted satisfy: the third incident surface 55 is configured to refract the light beam emitted by the lamp bead and near the optical axis to the light exit surface, and the first incident surface 52 and the second incident surface 54 are configured to refract the light beam emitted by the lamp bead and deviating from the optical axis.

Referring to fig. 2, the material of the lifting platform 4 is the same as that of the LED lenses 5, and the lifting platform 4 and the LED lenses 5 are integrally formed. The lifting platform 4 includes a horizontal plane plate 41 and a connecting shaft 42 vertically connected to the bottom of the plane plate 41, the plane plate 41 and the plurality of LED lenses 5 are integrally formed, the plane plate 41 and the connecting shaft 42 may be integrally formed, or a mounting hole of the connecting shaft 42 is formed in the center of the plane plate 41 in advance, and the connecting shaft 42 and the plane plate 41 are assembled together. In this embodiment, the flat plate 41 is a disc shape, and the number of the lenses 5 is three, however, in other implementations, the flat plate 41 may have other shapes, and the number of the lenses may also be other numbers, as shown in fig. 6, which may be specifically designed according to the requirements of the lighting device.

Preferably, in other embodiments, referring to fig. 7, a light reflecting sleeve 6 with an inner diameter slightly larger than the outer dimension of the bottom end of the lens 5 may be fixed around the lamp bead in advance, the bottom end of the lens 5 is movably sleeved in the light reflecting sleeve 6, and the light reflecting sleeve 6 is used for reducing light loss caused when the lens 5 is far away from the lamp bead, and also for increasing the utilization rate of light of the lamp bead.

In this embodiment, the circuit board 3 is located in a space below the plane plate 41, and the connecting shaft 42 passes through the circuit board 3 in a non-contact manner. Casing 1 is the aluminum alloy material, and its inside cavity and lower cavity divide into through a baffle, be provided with elevator motor and lighting control circuit in the lower cavity, circuit board 3 is fixed the baffle top, flat panel 41 is located go up in the cavity, the suitable distance in interval between flat panel 41 and the circuit board 3 to guarantee LED lens 5 and lamp pearl when just right time from top to bottom, the light of lamp pearl can effectually be emitted to LED lens 5 in, connecting axle 42 passes with non-contact the stretch into behind circuit board 3, the baffle in the lower cavity with the motor is connected, and motor, lamp pearl are all controlled by lighting control circuit, control motor drive connecting axle 42 through lighting control circuit and go up and down, and then drive the LED lens 5 lift of flat panel 41 bottom.

It should be noted that, although the present embodiment is automatically controlled by the motor, in other embodiments, as shown in fig. 6 to 7, the user may also control the connection shaft 42 to ascend and descend manually by using a knob or the like outside the housing 1 (the middle is transited by a lead screw to convert the rotary motion of the knob into the linear motion of the connection shaft), which are all simple variations of the embodiments of the present invention, all are within the protection scope of the present invention.

Wherein, the opening part of the upper cavity of the shell 1 is provided with a glass sheet 2, the glass sheet 2 is positioned above the plane plate 41, the surface of the glass sheet 2 is silk-screened with black baking varnish and is reserved with a plurality of blank areas corresponding to the light-emitting surfaces of the LED lenses 5, and it can be understood that the shapes and the sizes of the blank areas are related to the shapes and the sizes of the light-emitting surfaces of the LED lenses 5.

Referring to fig. 5, the principle of the present embodiment is as follows: as shown in the left drawing, in the initial position, the LED lens 5 is set at the lowest position, at this time, the distance between the lens 5 and the lamp bead is the smallest, most of the light rays of the lamp bead deviating from the optical axis are projected onto the second incident surface 54, and then reflected to the light emitting surface by the second reflecting surface 53, and the LED lens 5 is raised to the highest position, as shown in the right drawing, at this time, the distance between the lens 5 and the lamp bead is the largest, most of the light rays of the lamp bead deviating from the optical axis are projected onto the first incident surface 52, and then reflected to the light emitting surface by the first reflecting surface 51. Because the included angle between the third incident surface 55 and the bead is relatively large and the change of the included angle with the distance of the lens 5 is not particularly large, the light rays near the optical axis are basically directly refracted to the light-emitting surface through the third incident surface 55, and the light rays deviating from the optical axis increase with the height of the lens 5, some light rays originally projected to the second incident surface 54 become projected to the first incident surface 52, so that the final beam angle also changes. Because the lens 5 of this embodiment is equivalent to two compound lenses of inside and outside, so when adjusting lens 5 height, can not only adjust the beam angle of the light of play plain noodles, realize the focusing effect, and the scope that can adjust is bigger, and the light spot is even in the focusing scope, can let the beam angle realize 10-45 degrees continuous variation, and it is even to give out light and have no veiling glare, can satisfy the difference demand to nimble changeable scene effect in the actual view lighting place better, and let whole product look the shape neatly pleasing to the eye, the quality is reliable, and the cost is suitable.

Therefore, if the light beam angle needs to be changed, the light beam angle can be changed between a small angle, a medium angle and a wide angle only by adjusting the distance between the lamp bead and the lens 5, the narrow (small) light beam angle (10-20 ℃) of the lamp in the light visual effect can be used for key illumination, gorgeous light is highlighted, the wide (medium) light beam angle (more than 30-45 ℃) can be used for wall washing or local illumination, and light gradation and light-dark contrast are highlighted, so that the light-emitting device can be suitable for the unique requirements of more lighting scenes, and can also generate satisfactory light effects. Ensuring the smooth proceeding of the project and the activity.

While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. An LED light projection lighting device with an adjustable beam angle is characterized by comprising a lifting platform, a plurality of LED lenses and a plurality of lamp beads, wherein the LED lenses are arranged at the bottom of the lifting platform;

2. The beam angle adjustable LED lighting device according to claim 1, wherein the first and second reflection surfaces are bowl-shaped with an opening facing upward, the first and second incidence surfaces are circular table surfaces, and the third incidence surface is a convex downward curved surface or a convex upward curved surface;

3. The beam angle adjustable LED light projector as claimed in claim 1, wherein the top edge of the first reflection surface is higher than the top edge of the first incident surface, the top edge of the first incident surface is higher than the top edge of the second incident surface, and the bottom edge of the first incident surface is lower than the bottom edge of the second incident surface.

4. The beam angle adjustable LED light projecting lighting device of claim 1, wherein the light emergent surface comprises a convex curved surface at the center and a rounded mesa connected with the edge of the convex curved surface, and the convex curved surface is aspheric.

5. The LED floodlighting apparatus according to claim 1, wherein the elevating platform is made of the same material as the plurality of LED lenses, and the elevating platform and the plurality of LED lenses are integrally formed.

6. The LED flood lighting device with adjustable beam angle of claim 1, wherein the elevating platform comprises a planar board and a connecting shaft vertically connected to a bottom of the planar board, the plurality of LED lenses are located at the bottom of the planar board and are integrally formed with the planar board, and the planar board is integrally formed with or assembled with the connecting shaft.

7. The LED light projector as claimed in claim 6, wherein the plurality of beads are fixed on a circuit board, the circuit board is located in a space below the planar board, the connecting shaft passes through the circuit board in a non-contact manner, and the beads are light sources with a beam angle greater than 90 degrees or lambertian light sources.

8. The beam angle adjustable LED floodlight apparatus according to claim 7, further comprising a housing, wherein the interior of the housing is divided into an upper cavity and a lower cavity by a partition, the circuit board is fixed above the partition, the planar board is located in the upper cavity, and the connecting shaft passes through the circuit board and the partition in a non-contact manner and extends into the lower cavity to be connected to a motor or an external knob.

9. The beam angle adjustable LED floodlighting apparatus according to claim 8, wherein a glass sheet is disposed at the opening of the upper cavity, the glass sheet is disposed above the flat panel, and a black baking varnish is silk-screened on the surface of the glass sheet and a plurality of blank areas corresponding to the light-emitting surfaces of the LED lenses are reserved.

10. The LED light projecting lighting device with adjustable beam angle of claim 1, wherein a reflective sleeve is further provided around each of the beads, and the bottom end of the LED lens is movably sleeved into the reflective sleeve.