CN219809843U9

CN219809843U9 - Lighting device

Info

Publication number: CN219809843U9
Application number: CN202321003235.7U
Authority: CN
Inventors: 张权
Original assignee: YLX Inc
Current assignee: YLX Inc
Priority date: 2023-04-26
Filing date: 2023-04-26
Publication date: 2024-02-09
Anticipated expiration: 2033-04-26
Also published as: CN219809843U

Abstract

The application discloses a lighting device, wherein the lighting device comprises a substrate, wherein the substrate comprises a central area and at least one layer of annular area surrounding the central area; a light source assembly; the light source assembly comprises a plurality of light emitting pieces, and the light emitting pieces are arranged in the central area and the annular area; the control circuit is used for controlling the luminous elements in different areas on the substrate to emit light; wherein the control circuit is used for controlling the luminous elements of at least one annular area to be closed and simultaneously improving the driving current of the luminous elements of the central area and at least one annular area. This application carries out array arrangement through carrying out a plurality of luminescent part, and then makes the luminescent part to the region control that carries out of region, makes when the low-angle shines, and the luminous body that part can not shine on the projection lens is closed to increase the current drive and in the luminescent part of work, and then can reduce the waste to electric power resource, improve the utilization ratio of light.

Description

Lighting device

Technical Field

The application belongs to the technical field of lighting devices, and particularly relates to a lighting device.

Background

Along with the increasing luminous efficiency and lower cost of LEDs, high-power LEDs comprehensively replace gas discharge bulbs and become the main stream of high-end stage lamps. The high-power LED light source is formed by combining multiple chips with small power, and the chip power of a single LED is not high. In stage lighting, in order to pursue high illuminance of an optical system, people often change the light emitting angle of stage lamps by adjusting the position of a projection lens, so as to improve the illuminance of the lamps.

In the current small-angle illumination output, part of light beams are not irradiated on the lens due to the adjustment of the projection lens, so that the light utilization rate is low.

Disclosure of Invention

The application provides a lighting device to solve the lower problem of light-emitting part utilization ratio of current lighting device when the low angle shines, thereby improved lighting device's illumination efficiency, practice thrift the electric power resource.

In order to solve the technical problems, one technical scheme adopted by the application is as follows: there is provided a lighting device, wherein the lighting device comprises: a substrate comprising a central region and at least one annular region surrounding the central region; a light source assembly; the light source assembly comprises a plurality of light emitting pieces, and the light emitting pieces are arranged in the central area and the annular area; the control circuit is used for controlling the luminous elements in different areas on the substrate to emit light; wherein the control circuit is used for controlling the luminous elements of at least one annular area to be closed and simultaneously improving the driving current of the luminous elements of the central area and at least one annular area.

Optionally, the light emitting pieces are concentrically arranged in the light emitting area, one light emitting piece is arranged in the center area, and the light emitting piece of the outer ring wraps the light emitting piece of the inner ring.

Optionally, the concentric ring arrangement is a regular hexagonal point set arrangement.

Optionally, the light emitting elements are arranged in a vertical column, the light emitting elements are arranged between the vertical columns side by side, and the number of the light emitting elements in the vertical columns is gradually decreased from the middle part to two sides.

Optionally, the light emitting device further comprises a projection lens, wherein the projection lens is positioned on an emergent light path of the light emitting piece.

Optionally, the optical system further comprises a first collecting lens, wherein the first collecting lens is located on a transmission light path between the light emitting piece and the projection lens, and each first collecting lens corresponds to one light emitting piece and is used for collimating light beams emitted by the light emitting piece.

Optionally, a second collecting lens is disposed on the outgoing light path of the first collecting lens, and the second lens unit covers the first collecting lens.

Optionally, an optical outlet lens is disposed on a transmission optical path between the second collecting lens and the projection lens, and the optical outlet lens can collect light beams.

Optionally, the light emitting lens is a condenser lens.

Optionally, a pattern disc is disposed on a transmission light path between the light-emitting lens and the projection lens, so as to receive the light beam emitted from the light-emitting lens.

The beneficial effects of this application are: in the scheme of this application, through dividing into a plurality of regions with the light source subassembly and controlling the segmentation, can make not shine the light-emitting component on the projection lens and close, improve the luminous efficacy at work light-emitting component now simultaneously for the electric power loss has been reduced under the unchangeable circumstances of light source subassembly outgoing light power, and has improved the light utilization ratio of luminous body simultaneously.

Drawings

For a clearer description of the technical solutions in the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic illustration of a first embodiment of a lighting device of the present application;

FIG. 2 is a schematic view of a partial light ring arrangement of a first embodiment of the lighting device of the present application;

FIG. 3 is a graph of angular distribution of LED chip light output in the third, second, and first annular regions and the center region of the lighting device of the present application;

FIG. 4 is an angular distribution plot of LED chip emitted light of a fourth annular region of the lighting apparatus of the present application that may be utilized;

FIG. 5 is an angular distribution plot of LED chip emitted light of a fifth annular region of the illumination device of the present application that may be utilized;

fig. 6 is a schematic view of a partial lighting group arrangement of a second embodiment of the lighting device of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two, but does not exclude the case of at least one.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

Referring to fig. 1 and 2, fig. 1 is a schematic diagram of a first embodiment of a lighting device according to the present application, and fig. 2 is a schematic diagram of a partial lighting ring arrangement of the first embodiment of the lighting device according to the present application. In the first embodiment of the present application, the lighting device 1 includes: the light source assembly 3 comprises a plurality of light emitting pieces 301, and the plurality of light emitting pieces 301 are arranged in an array and connected to the same plate surface of the substrate 2.

The light emitting member 301 is an LED chip, in other embodiments, a light source may be provided for other components, and the light emitting surface of the LED chip may be pentagonal, hexagonal, octagonal, decagonal, circular or elliptical, and each LED chip is configured to emit a light beam with a certain angular distribution, which is not limited herein.

In the present embodiment, the substrate 2 includes a central region 201 and at least one annular region 202 surrounding the central region 201. At least one of the plurality of LED chips is mounted to the central region 201 of the substrate 2, and the remaining LED chips are mounted to at least one annular region 202. In this embodiment, the annular region 202 is a circular ring region surrounding the central region 201, and in other embodiments, the annular region 202 may be a rectangular annular region, a triangular annular region, or other polygonal annular regions according to the arrangement of the LED chips.

The substrate 2 may be a PCB (Printed Circuit Board ) or an MCPCB board (Metal Core Printed Circuit Board, metal-based printed circuit board). The material can also be aluminum, silicon, polymer material or composite material. In this embodiment, the orthographic projection of the substrate 2 may be circular, and the center of the substrate 2 is the geometric center thereof. In other embodiments, the orthographic projection of the substrate 2 may be a regular ellipse, triangle, circle, or the like, or may be other irregular shapes, which is not limited herein.

Specifically, the annular area 202 is provided with 5 layers, the annular area 202 is sequentially wrapped outside the central area 201, six layers of substrates 2 in the lighting device 1 are arranged from inside to outside, the central area 201 and the outer annular area are respectively provided with LED chips, the number of the LED chips arranged on each layer from inside to outside is 1, 6, 12, 18, 24 and 28, 89 LED chips are arranged in total, the LED chips in each annular area 202 are arranged at intervals, the LED chips in each annular area 202 are distributed in a polygonal point set, the distribution of the polygonal point set refers to that one LED chip in the annular area 202 is used as a luminous point according to a certain direction, and the centers of luminous surfaces of the LED chips are sequentially connected in a clockwise or anticlockwise mode to form a polygonal structure. The polygons may be quadrilaterals, pentagons, hexagons, etc., and in particular, regular polygon structures may be formed, such as regular quadrilaterals, regular pentagons, regular hexagons, etc., and in this embodiment, the LED chips in each annular region 202 are arranged in a regular hexagonal lattice, and the LED chips are uniformly distributed in each annular region 202. In addition, adjacent LED chips are distributed in a regular triangle.

In the present embodiment, the center area 201 is provided with one LED chip. The central area 201 is externally wrapped with a first annular area 2021, 6 LED chips are arranged in the first annular area 2021, and the 6 LED chips are located on the top points of the regular hexagon, namely, the included angle between two adjacent LED chips in the first annular area 2021 and the LED chips in the central area 201 is 60 degrees, and the distances between each LED chip and the LED chip in the middle area are equal.

A second annular region 2022 is disposed outside the first annular region 2021, the second annular region 2022 is provided with 12 LED chips, 6 of the LED chips in the second annular region 2022 are respectively located on extension lines of the LED chips in the central region 201 and the LED chips in the first annular region 2021, and the remaining 6 LED chips are located in the middle of two adjacent LED chips. The included angle between the connection lines between any two adjacent LED chips in the second annular region 2022 and the LED chip in the central region 201 is 30 degrees.

A third annular region is arranged outside the second annular region 2022, 18 LED chips are arranged in the third annular region, 6 LED chips in the third annular region are respectively located on the extension lines of the LED chips in the central region 201 and the LED chips in the first annular region 2021, and two LED chips are uniformly arranged between two adjacent LED chips, so that the 18 LED chips are uniformly distributed. The included angle between the connecting lines of any two adjacent LED chips in the third annular area and the LED chip in the central area 201 is 15 degrees.

A fourth annular region is arranged outside the third annular region, 24 LED chips are arranged in the fourth annular region, 6 LED chips in the fourth annular region are respectively positioned on the extension lines of the LED chips in the central region 201 and the LED chips in the first annular region 2021, and three LED chips are uniformly arranged between two adjacent LED chips, so that the 24 LED chips are uniformly distributed. The included angle between the connecting lines of any two adjacent LED chips in the fourth annular area and the LED chip in the central area 201 is 7.5 degrees.

A fifth annular region is arranged outside the fourth annular region, 28 LED chips are arranged in the fourth annular region, 6 LED chips in the fourth annular region are respectively positioned on the extension lines of the LED chips in the central region 201 and the LED chips in the first annular region 2021, three LED chips are uniformly arranged between two adjacent LED chips, and the two LED chips are symmetrically inserted into the fifth annular region with hexagonal electrode arrangement, so that 22 LED chips are uniformly distributed.

Referring to fig. 3, fig. 3 is an angular distribution diagram of the light emitted from the LED chips in the third, second, first annular region and central region of the lighting device of the present application, that is, when the light emitted from the LED chips in the third, second, first annular region 2021 and central region 201 is within the angular range, the subsequent optical system may collect and project the light, and the main half angle of the light beams emitted from the 37 LED chips in the third, second, first annular region 2021 and central region 201 is within 13 degrees, so that most of the light emitted from the LED is utilized.

Referring to fig. 4, fig. 4 is an angular distribution diagram of the light emitted from the LED chips in the fourth annular region of the lighting device according to the present application. The main half angle of the light beam emitted by 24 LED chips in the fourth annular area is between 13 and 20 degrees, that is, the light with the light angle distribution of the LED chips in the fourth annular area between 13 and 20 degrees is utilized, the utilized light can enter a subsequent optical system to be collected and projected, and the light with the rest angle distribution is not collected and utilized and is lost.

Referring to fig. 5, fig. 5 is an angular distribution diagram of the light emitted from the LED chips in the fifth annular region of the lighting device according to the present application. The light beam emitted by 28 LED chips in the fifth annular region has a main half angle degree between 20 and 27 degrees. That is, the farther the LED chip is from the central region 202, the greater the angular distribution of the outgoing light that can be utilized, mainly because the LED chip emits lambertian light, and the optical system of the entire lighting device 1 can collect only light incident on its optical surface, and as the LED is far from the central region 202, only marginal large-angle light of the outgoing light of the LED chip can enter the subsequent optical system.

In this embodiment, the LED chips in the central area 201 and the LED chips in the five annular areas 202 may be controlled by a control circuit on the substrate 2, so that the LED chips in different areas may work independently and do not interfere with each other. The LED power supply device can integrally control each circle of layers according to actual conditions, control the on or off of the LED chips in different areas, realize accurate adjustment and greatly reduce the waste of power resources.

In this embodiment, after the LED chip is powered on, the LED chip emits a light beam, and the emitted light beam is transmitted along a preset optical path, and then sequentially passes through the first collecting lens 4 and the second collecting lens 5. The first collecting lenses 4 are connected to the substrate 2, the first collecting lenses are wrapped on the LED chips, the number of the first collecting lenses 4 corresponds to the number of the LED chips, that is, 89 first collecting lenses 4 are arranged and correspond to the LED chips one by one. Since the luminescence angle is 360 degrees in theory, but the LED chip is fixed and packaged on the bracket, the luminescence angle is limited, only about 180 degrees, and different luminescence angles can be adjusted through the first collecting lens 4. The light beam passes through the first lens and then continuously passes through the second collecting lens 5, wherein the first collecting lens 4 is used for collecting the emergent light of the LED, the second collecting lens 5 is used for collimating the light collected by the first collecting lens 4, collecting and collimating the light beam into nearly parallel light with a certain divergence angle, and then emergent to the light emergent lens 6.

In this embodiment, the light-emitting lens 6 is a plano-convex lens, one end of the plano-convex lens is a plane, one end of the plano-convex lens is convex, and the light-emitting lens 6 is located on the light path emitted through the second collecting lens 5. The output lens 6 may include, but is not limited to, a collection lens, a lens or a lens group, etc. Any light collecting element that can limit the exit angle of the exiting light beam within a certain range may be used, and the embodiments of the present application are not limited herein. After entering the light outlet lens 6, the light beams of the LED chips are refracted by the light outlet lens 6 to gather the light to a certain extent.

In this embodiment, the beam will impinge on the pattern disc 7 after passing through the light exit mirror 6. The pattern disc 7 in this embodiment is a thin plate, and only a part of the light beam can penetrate through the thin plate, that is, the part of the light beam can penetrate through the hollowed-out portion on the thin plate, so as to form an image corresponding to the thin plate. Different thin plates can be replaced under different use environments, so that different projections are formed, and the cost is saved.

Alternatively, in the field of pattern lighting, the pattern disc 7 may also be referred to as a GOBO, where a GOBO refers to a sheet mounted on a spotlight, stage effect lamp, etc., and various pattern designs or characters are projected under the irradiation of a special spotlight bulb, and the GOBO used in the industry may include a circular or rectangular sheet.

It can be understood that the illumination device 1 and the pattern disc 7 can be reasonably selected and arranged, so that the outgoing light beam homogenized by the illumination device 1 is incident into the pattern disc 7 as much as possible, which is beneficial to improving the light beam utilization efficiency.

The light beam passes through the hollowed-out area on the thin plate and then irradiates on the projection lens 8. The projection lens 8 is a plano-convex lens, the projection lens 8 is located on the light path emitted by the pattern disc 7, and the light beam is transmitted through the projection lens 8 to form an image to be mapped on the projection plane.

As described above, in the light source assembly 3 of the lighting device 1 of the present application, the angles (half angles) of the light emitted from the LED chips in the third, second, first annular regions 2021 and the central region 201 can be collected and processed by the subsequent optical system are within 13 degrees, the angles (half angles) of the light emitted from the LED chips in the fourth annular region can be collected and processed by the subsequent optical system are between 13 and 20 degrees, the angles (half angles) of the light emitted from the LED chips in the fifth annular region can be collected and processed by the subsequent optical system are between 20 and 27 degrees, that is, the angles at which the light emitted from the LED chips in the different annular regions 202 can be utilized are different, and all the LED chips are added up to realize one complete light output. When the angular distribution of the light that can be collected by the optical system is within 5 degrees, most of the light emitted by the LED chips of the light source assembly 3 cannot be collected at this time, and only a small portion of the light energy of the central region 201 is utilized. When the angular distribution of the light that can be collected by the optical system is within 30 degrees, the light energy emitted by the LED chips in the central area 201 of the light source assembly 3 and the annular area 202 adjacent to the central area is utilized, and only a small portion of the light emitted by the LED chips in the annular area 202 farther from the central area 201 is utilized, which results in waste of most of the light emitted by the LED chips in the edge annular area 202, which is not beneficial to energy saving and environmental protection of the lighting device 1, and the light efficiency of the whole lighting device 1 is low.

For the sake of convenienceFor illustration, with the 1500W light source assembly 3, the number of LED chips is approximately 90-100PCS, and the light emitting area of a single chip is 2.20-2.30mm ² The lighting device 1 can collect light rays of 140 degrees of a single LED chip, and the light rays pass through the equivalent formula of the optical expansion of the light source: e=n×s×sin (θ), where n is the number of LED chips, s is the light emitting area of the LED chips, θ is the divergence angle of the LED chips, and the etendue of each LED chip is about 2, and the etendue of 90-100 LED chips is between 180-200. When the lamp lens is applied to the minimum angle output, the projection lens 8 is controlled to be far away from the thin plate, and when the projection lens 8 moves to the corresponding position, the minimum angle is obtained. If the effective diameter of the projection lens 8 is 180mm, the optical expansion of the light source assembly 3 can be effectively collected by the lens at this time, and the optical expansion of the light source assembly 3 which can be collected by the projection lens 8 is far smaller than the expansion of the light source assembly 3. That is, since the projection lens 8 is moved, the light beam with a larger half angle is irradiated on the projection lens 8, and then is changed into a light beam which is not irradiated on the projection lens 8, at this time, most of the light beam which is not irradiated on the projection lens 8 is lost, at this time, the LED chip corresponding to the light beam which is not irradiated on the projection lens 8 can be controlled to be turned off by the control circuit on the substrate 2, only the LED chip which is irradiated on the projection lens 8 is turned on, and the resource saved by turning off the LED chip is applied to the LED chip in the working state, that is, the current driving of the turned-on LED chip is increased while the LED chip is turned off, so that the power of the whole lighting device 1 is not reduced, even can be increased, at this time, most of the emergent light of the light source assembly 3 is utilized, and the utilization rate of the light source assembly 3 is higher. Compared with the prior art, the LED light source module has the advantages that the light utilization rate of the light source module 3 is improved on the basis that the emergent light power of the light source module 3 is not changed by adjusting the switch of the LED chips in different areas, and energy conservation and environmental protection are further realized.

During the experiment, the central illuminance variation of the spot projected by the lighting device 1 to 5 meters was simulated when the degree of the projection lens 8 of the lighting device 1 was at the minimum degree. When the LED chip is fully on, the power of the light source assembly 3 is 1402W, and the relative illumination of the light spots at the moment is assumed to be 100%; when the LED chips in the fifth annular region are turned off, the power of the light source assembly 3 is 961W, and the relative illuminance of the light spots is 100%, that is, the LED chips in the fifth annular region are turned off, so that the light spots of the light emitted from the lighting device 1 are not affected, because the light emitted from the LED chips in the fifth annular region does not enter the projection lens 8 of the lighting device 1; when the LED chips of the fourth and fifth annular regions are turned off, the light source power at this time is 583W and the spot relative illuminance is 79%, that is, the LED chip of the fourth annular region is turned off, which affects the spot of the light emitted from the illumination device 1 because the LED chip of the fourth annular region emits a light portion into the projection lens 8 of the illumination device 1. That is, when the projection lens 8 zooms to the minimum irradiation angle, the LED chip in the fifth annular region can be turned off, and the remaining LED chip is allowed to work with higher power, so that the driving current of the LED chip can be increased, the output of the LED chip is higher, and the light utilization rate of the light source assembly 3 is improved, the consumption of power is reduced, and the service life of the whole lighting device 1 is prolonged on the basis that the emergent light power of the lighting device 1 is not affected.

Referring to fig. 6, fig. 6 is a schematic view illustrating a partial lighting group arrangement of a second embodiment of the lighting device of the present application. In a second embodiment of the present application.

In this embodiment, the substrate 2 includes a plurality of vertical column regions 203, each vertical column region 203 is connected with each other, a plurality of LED chips are disposed in each vertical column region 203, the number of LED chips in the vertical column region 203 decreases from the middle to two sides in sequence, and the numbers of LED chips in the vertical column regions 203 at two sides correspond to each other. The LED chips in each column region 203 may be controlled to emit light by a control circuit on the substrate 2.

In the present embodiment, when the illumination device 1 performs the minimum angle irradiation, five columns of the columnar areas 203 are used in total, and the number of the columnar areas 203 is not particularly limited here. Five LED chips are arranged in the middle vertical column area 203 respectively, 3 LED chips are arranged on the two outermost sides, and 4 LED chips are arranged in the middle vertical column area 203. The control circuit on the substrate 2 can control the LED chips in the two edge vertical column areas 203 to be turned off, so that the LED chips on the two edge vertical column areas 203 can be further controlled to be not operated, the driving current of the LED chips in operation is increased, the output of the LED chips is higher, the light utilization rate of the light source assembly 3 is improved on the basis that the emergent light power of the lighting device 1 is not influenced, the consumption of electric power is reduced, the service life of the whole lighting device 1 is prolonged, and the light utilization rate of the light emitting piece 301 is further improved on the original basis.

In the following, when the lighting device 1 needs to perform the small-angle illumination, the control circuit on the substrate 2 turns off the light emitting element 301 that is not illuminated on the projection lens 8 by controlling the movement of the projection lens 8, and allows the remaining LED chips to operate with a larger power.

The foregoing description is only exemplary embodiments of the present application and is not intended to limit the scope of the present application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the present application.

Claims

1. A lighting device, comprising:

a substrate comprising a central region and at least one annular region surrounding the central region;

a light source assembly; the light source assembly comprises a plurality of light emitting pieces, and the light emitting pieces are arranged in the central area and the annular area;

the control circuit is used for controlling the luminous elements in different areas on the substrate to emit light;

wherein the control circuit is used for controlling the luminous elements of at least one annular area to be closed and simultaneously improving the driving current of the luminous elements of the central area and at least one annular area.

2. A lighting device as recited in claim 1, wherein said light emitting elements are arranged in concentric circles in said annular region and wherein one of said light emitting elements is disposed in said central region and wherein said light emitting elements of said outer ring surrounds said light emitting elements of said inner ring.

3. A lighting device as recited in claim 2, wherein said concentric ring-like arrangement is a regular hexagonal point set arrangement.

4. A lighting device as recited in claim 1, wherein said light emitting elements are arranged in a column, and said columns are arranged side by side, said number of light emitting elements in said columns decreasing in sequence from a center to two sides.

5. A lighting device as recited in any one of claims 1-4, further comprising a projection lens, said projection lens being positioned in an exit light path of said light emitting element.

6. A lighting device as recited in claim 5, further comprising first collection lenses, said first collection lenses being positioned in a transmission path between said light emitting elements and said projection lens, each of said first collection lenses corresponding to one of said light emitting elements for collimating a light beam emitted from said light emitting element.

7. A lighting device as recited in claim 6, wherein a second collecting lens is disposed on an outgoing light path of said first collecting lens, said second collecting lens being covered with said first collecting lens.

8. A lighting device as recited in claim 7, wherein a light exit lens is disposed in a transmission path between said second collecting lens and said projection lens, said light exit lens being operative to focus a light beam.

9. A lighting device as recited in claim 8, wherein said light exit lens is a collection lens.

10. The illumination device of claim 9, wherein a patterned disk is disposed in a transmission path between the light-emitting mirror and the projection lens to receive the light beam emitted from the light-emitting mirror.