CN114060743A

CN114060743A - LED light projection lighting device and method capable of switching beam angles

Info

Publication number: CN114060743A
Application number: CN202010756726.3A
Authority: CN
Inventors: 王火炎; 曾有为; 金政
Original assignee: Shenzhen Dart Illumination Co ltd
Current assignee: Shenzhen Dart Illumination Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2022-02-18

Abstract

The invention discloses an LED light projection lighting device and a method capable of switching beam angles, the device comprises a rotary platform, M types of LED lenses and N lamp beads positioned in the space below the M types of LED lenses, light outlets of the LED lenses are connected with the rotary platform, the beam angles of the M types of LED lenses are different from each other, each type of LED lens comprises N LED lenses, the M types of LED lenses are circularly and uniformly distributed at intervals around a rotary central shaft of the rotary platform, the N types of LED lenses are circularly and uniformly distributed around the rotary central shaft, the distance from each lamp bead to the rotary central shaft is the same as that from each LED lens to the rotary central shaft, and the distance between two adjacent LED lenses in the same type of LED lens is equal to that between the two adjacent lamp beads, the invention can realize the selection of the beam angles and greatly improve the effective application of light, the production and use cost is reduced.

Description

LED light projection lighting device and method capable of switching beam angles

Technical Field

The invention relates to the field of projection lamps, in particular to an LED light projection lighting device and method capable of switching beam angles.

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. Because the LED light projector has the characteristics of energy conservation, high lighting effect, rich colors, long service life and the like, the LED light projector is widely used, is very suitable for panoramic light projection illumination of inner and outer wall surfaces of government lighting projects, commercial places, subways, overhead overpasses, building outer walls, building landmarks and the like, and can adapt to various indoor and outdoor temperature and humidity environments.

Therefore, the LED projection lamp has a plurality of shapes, and is suitable for being installed and used in landscape places with different shapes due to the round, square, strip and other shapes. The LED projection lamp irradiates light on an illuminated surface, can be used for decorative lighting of landscape sites and can also be used for outlining large buildings, but the traditional LED projection lamp is generally only matched with a lens with a light-emitting angle for permanent use. Particularly, traditional LED projecting lamp includes casing, circuit drive, LED lamp pearl and lens usually, because traditional LED projecting lamp is in order to reach IP65 protection level, the lens that adopts all is fixed installation and can't switch, can only be to the demand of some specific use occasions, so must cause the beam angle of the LED lamps and lanterns on the present market all fixed, and the range of application receives the restriction. So, must make LED projecting lamp lighting methods single, can't satisfy the nimble difference demand that the changeable brought of actual construction application scene, for example landscape greening trees's height differs, when the LED projecting lamp of different beam angles is needed, need whole lamp to change, change lamps and lanterns must increase use cost, cause the change cycle length, still produce a lot of unnecessary extravagant, for example must lead to enterprise's lamps and lanterns stock to increase.

Disclosure of Invention

The present invention is to provide an LED light projection lighting device and method capable of switching beam angles, aiming at the defects caused by the fact that the LED light projection lamp in the prior art is only provided with one light emitting angle.

The technical scheme adopted by the invention for solving the technical problems is as follows: an LED light projection lighting device capable of switching beam angles is constructed, and comprises a rotating platform, M types of LED lenses arranged at the bottom of the rotating platform, and N lamp beads positioned in the space below the M types of LED lenses, wherein light outlets of the LED lenses are connected with the rotating platform, the beam angles of the M types of LED lenses are different from each other, each type of LED lens comprises N LED lenses, and M, N are positive integers greater than 1 respectively;

m kinds of LED lens encircle rotary platform's rotation center axle is circular even interval and arranges, N lamp pearl encircles rotary platform's rotation center axle is circular even arranging, each lamp pearl distance the distance of rotation center axle and each LED lens distance the distance of rotation center axle is the same, and the distance between two adjacent LED lenses in the same kind of LED lens is equal with the distance between two adjacent lamp pearls, rotary platform can make a certain LED lens N LED lens with N lamp pearl is just right from top to bottom respectively through the rotation.

Preferably, the rotating platform is a rotating disc made of the same material as the LED lens, a rotating shaft is vertically fixed at the bottom of the rotating disc, and the LED lens is located at the bottom of the rotating disc and integrally formed with the rotating disc.

Preferably, the N lamp beads are fixed on a circuit board, the circuit board is located in a space below the rotating disc, and the rotating shaft penetrates through the circuit board in a non-contact mode.

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, a motor is arranged in the lower cavity, the circuit board is fixed above the partition plate, the rotating disc is located in the upper cavity, and the rotating shaft penetrates through the partition plate in a non-contact mode and then extends into the lower cavity to be connected with the motor.

Preferably, the opening part of the upper cavity is provided with a glass sheet, the glass sheet is positioned above the rotating disc, black baking varnish is silk-screened on the surface of the glass sheet, N blank areas corresponding to the light-emitting surfaces of the N LED lenses are reserved, and the N blank areas are respectively opposite to the N lamp beads up and down.

Preferably, the M kinds of LED lenses are specifically three types of lenses of a narrow beam angle, a medium beam angle, and a wide beam angle.

In another aspect, the present invention provides a switchable beam angle LED lighting device method, which is implemented based on the switchable beam angle LED lighting device, and includes:

when the beam angle is to be switched, the rotary platform is controlled to rotate at least once to find the required beam angle, wherein the angle of each rotation of the rotary platform is 360/(M N) degrees.

The LED light projection lighting device and the method capable of switching the beam angle have the following beneficial effects: can select a certain LED lens's a N LED lens and N lamp pearls respectively just from top to bottom to realize the selection of beam angle, realize the regulation and the transform of the beam angle of lamps and lanterns, let this projection lighting device be applicable to the nimble changeable unique requirement of landscape lighting scene more through changing lens, also can produce visual change and the light effect that make people tremble, it has internal structure reasonable in design simultaneously, the outward appearance is pleasing to the eye, the protection level reaches IP 66's advantage, be applicable to outdoor adverse circumstances, from whole application, the device has broken through the restriction of open air professional application, greatly promote the effective application of light, production and use cost have been reduced, be convenient for volume production and marketization.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 diagram of the construction of a switchable beam angle LED light projector illumination of the present invention;

FIG. 2 is a cross-sectional view of the switchable beam angle LED floodlighting apparatus of the present invention;

FIG. 3 is a schematic diagram of the internal structure of the switchable beam angle LED floodlighting apparatus of the present invention;

fig. 4 is a schematic view of an LED lens arrangement.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Exemplary embodiments of the invention are shown in the drawings. This 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 should be understood that the embodiments and specific features in the embodiments of the present invention are described in detail in the present application, but not limited to the present application, and the features in the embodiments and specific features in the embodiments of the present invention may be combined with each other without conflict.

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," "left," "right," and the like as used herein are 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.

Referring to fig. 1, in conjunction with fig. 2-3, the LED light projecting lighting device with switchable beam angle of the present invention includes a cylindrical housing 1, a rotating platform 6, M kinds of LED lenses 4, N beads located in the space below the M kinds of LED lenses 4, and the like, M, N are positive integers greater than 1 respectively.

The M LED lenses 4 are arranged at the bottom of the rotating platform 6, the LED lenses 4 are bowl-shaped, light outlets at the tops of the LED lenses 4 are connected with the bottom of the rotating platform 6, beam angles of the M LED lenses 4 are different from each other, and each LED lens 4 comprises N LED lenses 4. Here, the beam angle is also the light emission angle.

In this embodiment, the rotating platform 6 is specifically a rotating disc made of the same material as the LED lens 4, the rotating disc is horizontal, a rotating shaft 7 is vertically fixed at the bottom of the rotating disc, and the rotating shaft 7 rotates to drive the rotating disc to rotate. The LED lens 4 is located at the bottom of the rotating disk and integrally formed with the rotating disk.

For example, taking fig. 4 as an example, assuming that three kinds of LED lenses 4 are provided in total, L1, L4, and L7 are the first kind, L2, L5, and L8 are the second kind, and L3, L6, and L9 are the third kind. It will be understood that, since rotation is understood to be relative to a virtual axis, reference herein to a central axis of rotation is to the virtual axis relative to which the rotating platform 6 rotates.

N lamp pearls encircle the rotation center axle of rotary platform 6 is circular evenly arranging, each lamp pearl distance the distance and each of rotation center axle LED lens 4 distance the distance of rotation center axle is the same, and the distance between two adjacent LED lens 4 in same kind of LED lens 4 equals with the distance between two adjacent lamp pearls, so, rotary platform 6 can make a certain N LED lens 4's a LED lens 4 through the rotation with N lamp pearl is just right from top to bottom respectively.

Particularly, in this embodiment, N lamp pearls are fixed on circuit board 5, and in the time circuit board 5 is located rotating disc below space, it is concrete, 1 inside cavity and lower cavity of divideing into through a baffle of casing, be provided with motor 2 and lighting control circuit in the lower cavity, circuit board 5 is fixed the baffle top, rotating disc is located in the last cavity, the suitable distance in interval between rotating disc and the circuit board 5 to when guaranteeing LED lens 4 and lamp pearl from top to bottom just, the light of lamp pearl can effectually be emitted to LED lens 4 in. The rotating shaft 7 penetrates through the circuit board 5 and the partition board in a non-contact mode and then extends into the lower cavity to be connected with the motor 2, the motor 2 and the lamp beads are controlled by the illumination control circuit, the motor 2 is controlled by the illumination control circuit to drive the rotating shaft 7 to rotate, and then the LED lens 4 at the bottom of the rotating platform 6 is driven to rotate.

It should be noted that, although the present embodiment is automatically controlled by the motor 2, in other embodiments, the rotation of the rotating shaft 7 may be manually controlled by a user through a knob or the like, which are all simple variations of the present embodiment and are within the protection scope of the present invention.

Further, in this embodiment, the opening part of upper chamber body sets up a glass piece 3, glass piece 3 is located the rotating circular disc top, 3 surface silk screen printing black baking varnish of glass piece and reservation with N blank area 31 that the play plain noodles of N LED lens 4 corresponds, N blank area 31 with N lamp pearl is just right from top to bottom respectively. The shape and size of the blank area 31 are related to the shape and size of the light exit surface of the LED lens 4.

Theoretically, the larger M, the more the beam angle can be adjusted, but for cost and necessity considerations, it is generally sufficient to suggest that the M types of LED lenses 4 are specifically all or two of the three types of narrow, medium, and wide beam angles. Wherein the narrow beam angle ranges from less than 20 °, the medium beam angle ranges from 20 ° to 40 °, and the wide beam angle ranges from more than 40 °.

The effects of the embodiments of the present invention will be described below by taking three examples of narrow beam angles, medium beam angles, and wide beam angles. Referring to fig. 4, three lenses L1, L4, L7 correspond to narrow beam angles, L2, L5, L8 correspond to medium beam angles, and L3, L6, L9 correspond to wide beam angles. In the initial state, the device has narrow beam angles, namely the lenses L1, L4 and L7, and the other middle beam angle lenses (L2, L5 and L8) and the wide beam angle lenses (L3, L6 and L9) do not participate in beam angle adjustment of the light rays irradiated by the LED lamp beads, and are hidden in the space below the black baking varnish area of the glass, so that the other angle lenses which are not used temporarily cannot be seen from the outside of the device. When switching to the middle beam angle is required, the motor 2 may be controlled to rotate 360/9 degrees in the counterclockwise direction of fig. 4, i.e., to rotate 40 degrees, if switching to the wide beam angle is to be continued, the motor 2 may be continuously controlled to rotate 40 degrees in the counterclockwise direction of fig. 4, and if rotating 40 degrees is to be continued, switching back to the narrow beam angle, and thus, variation in the entire lamp irradiation range may be achieved.

The LED light projection lighting device provided by the embodiment of the invention has the following beneficial effects: the device can satisfy the differentiation demand to nimble changeable scene effect in actual view lighting site to let whole product look the shape clean and tidy pleasing to the eye, the quality is reliable, and the cost is suitable, is particularly suitable for needing a lot of application occasions that realize the view lighting scene and differ, not only can reduce the waste of LED lamps and lanterns change resource, still reduces construction manufacturing enterprise's LED production and storage cost.

Based on the same inventive concept, the invention also discloses a method for switching the beam angle of the LED light-projecting lighting device, which is realized based on the LED light-projecting lighting device with the switchable beam angle of the embodiment, and the method comprises the following steps: when the beam angle is to be switched, the rotation stage 6 is controlled to rotate at least once to find the desired beam angle, wherein the angle of each rotation of the rotation stage 6 is 360/(M × N) degrees. For more details, reference may be made to the above-mentioned device embodiment, and details are not repeated here.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An LED light-projecting lighting device capable of switching beam angles is characterized by comprising a rotating platform, M types of LED lenses arranged at the bottom of the rotating platform and N lamp beads positioned in the space below the M types of LED lenses, wherein light outlets of the LED lenses are connected with the rotating platform, the beam angles of the M types of LED lenses are different from each other, each type of LED lens comprises N LED lenses, and M, N are positive integers greater than 1 respectively;

2. The device of claim 1, wherein the rotating platform is a rotating disk made of the same material as the LED lens, a rotating shaft is vertically fixed at the bottom of the rotating disk, and the LED lens is located at the bottom of the rotating disk and is integrally formed with the rotating disk.

3. The switchable beam angle LED light projector as defined in claim 2, wherein the N beads are mounted on a circuit board spaced below the rotating disk, the rotating shaft passing through the circuit board in a non-contacting manner.

4. The switchable beam angle LED floodlight apparatus according to claim 2, further comprising a housing, the interior of the housing is divided into an upper chamber and a lower chamber by a partition, the lower chamber is provided with a motor therein, the circuit board is fixed above the partition, the rotating disk is located in the upper chamber, and the rotating shaft passes through the partition in a non-contact manner and then extends into the lower chamber to be connected to the motor.

5. The LED light projecting lighting device of claim 4, wherein a glass sheet is disposed at the opening of the upper cavity, the glass sheet is located above the rotating disk, black baking varnish is silk-screened on the surface of the glass sheet, N blank areas corresponding to the light emitting surfaces of the N LED lenses are reserved, and the N blank areas and the N lamp beads are respectively opposite to each other up and down.

6. The switchable beam angle LED light projector as claimed in claim 1, wherein the M LED lenses are in particular three types of lenses, narrow, medium and wide.

7. A switchable beam angle LED light projector method, implemented based on the switchable beam angle LED light projector of any of claims 1-6, the method comprising: