CN218720761U

CN218720761U - Light source device suitable for animal and plant equipment

Info

Publication number: CN218720761U
Application number: CN202222198991.1U
Authority: CN
Inventors: 王森; 杨其长; 李宗耕; 周成波
Original assignee: Institute of Urban Agriculture of Chinese Academy of Agricultural Sciences
Current assignee: Institute of Urban Agriculture of Chinese Academy of Agricultural Sciences
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2023-03-24
Anticipated expiration: 2032-08-19

Abstract

The utility model relates to a light source device suitable for animal and plant equipment, the device is including disposing first opening and second open-ended light source cover, a semi-closed space that surrounds base and light source module is disposed according to the mode with base and light source module coaxial arrangement to the light source cover that is used for forming protecting sheathing, wherein, set up the arc portion that is used for the emergent light of reflection irradiation inboard at the light source cover near the inboard surface of first opening, the arc portion disposes the cambered surface that is set up to gradual change camber according to the mode that the light intensity of the reverberation irradiation target area through the arc portion diminishes gradually from the direct light irradiation edge to the axis direction of base, make the position different with the axis distance can obtain the even illuminating effect of light intensity based on the stack of direct light and reverberation, improve the inhomogenity of direct light irradiation target area; meanwhile, the device can continuously dissipate heat of the light source module through the convection heat exchange of the ascending air flow and the vent hole.

Description

Light source device suitable for animal and plant equipment

Technical Field

The utility model relates to a biotechnology and illumination field especially relate to a light source device suitable for animal and plant equipment.

Background

In the frontier field of modern agricultural technology development, an intelligent Farm (Smart Farm) or a Plant Factory (Plant Factory) gradually becomes a production system with high investment, high technology and fine equipment, and is an industrial agricultural system which integrates biotechnology, engineering technology and system management, enables agricultural production to be separated from natural ecological constraints and produces Plant products according to planned anniversaries, and the selection of a light source and the correspondingly produced lighting effect are a key part for the intelligent Farm or the Plant Factory to exert high efficiency.

For example, the formation of the photosynthetic products of plant photosynthesis is closely related to the intensity of light and the accumulation time thereof, and the intensity of the light influences the photosynthetic intensity on one hand and can also change the crop morphology; the light quality or the spectrum distribution also has important influence on the photosynthesis and the morphogenesis of the plants, the plants mainly absorb the light energy within the wavelength range of 400-700nm after long-term natural selection and evolution, the influence effects of the light rays with different wavelength ranges on the plants are different, and the various spectrum components can cause the plants to have different physiological effects.

The light source that has been applicable to on the animal and plant equipment generally adopts LED, and LED has advantages such as small, longe-lived, efficient, and for satisfying the growth needs of different kinds of animals and plants, the LED light source can improve its suitability through spectral range and light intensity adjustable mode, and the white light LED of current simulation sunlight mainly realizes through three kinds of forms: (1) The LED adopts red, green and blue LEDs to emit light in a combined way, namely a multi-chip white LED; (2) Adopting a blue light LED chip and yellow fluorescent powder, obtaining white light by the complementation of blue light and yellow light, or using the blue light LED chip to match with red and green fluorescent powder, and obtaining white light by mixing the blue light emitted by the chip, the red light emitted by the fluorescent powder and the green light; (3) The near ultraviolet light emitted by the ultraviolet LED chip is used for exciting the tricolor fluorescent powder to obtain white light. The latter two ways use Phosphor, called Phosphor Converted Light Emitting Diode pc-LED, which has advantages over multi-chip white LEDs in terms of control circuitry, production cost, heat dissipation, etc. And the high-power wafer integrated packaging type LED which is suitable for long-time and large-range irradiation in agricultural application can generate a large amount of heat in work, overheating can cause rapid aging of electronic devices, and the spectrum composition of emergent light shifts to influence the light-emitting efficiency. Therefore, a light source device capable of adjusting the spectrum of emitted light for different animals and plants, having a good heat dissipation effect and generating uniform light intensity for a target area is needed.

In the prior art, for example, a patent with publication number CN201817497U discloses a device for promoting growth of animals and plants by using LED light waves, which includes RGB three-color LED light sources and a light wave controller capable of controlling the RGB three-color LED light sources and generating emergent light with a specific wavelength.

The patent document with publication number CN208690297U discloses a one-time or two-time packaged rhombus point light source, which comprises a packaged point light source, wherein both sides of the packaged point light source are fixedly connected with circuit boards, one side of the circuit board far away from the packaged point light source is fixedly connected with a lead, and the center inside the packaged point light source is fixedly provided with an LED chip array structure; the diamond sheets support each other to improve the shock resistance. However, due to the arrangement of the diamond-shaped sheet, the emergent light is not uniform in spatial angle, and the requirement of uniform irradiation on a fixed area cannot be met.

Patent document CN201589108U discloses a lamp using an LED chip integrated package light source, which includes a housing and 1-6 lamp modules mounted in the housing. Each lamp module comprises a heat dissipation device, an LED wafer integrated package type light source arranged on the heat dissipation device and a lens covered outside the LED wafer integrated package type light source. The heat dissipation device is a solid base, a plurality of vertical through holes for air convection are formed in the base, the vertical through holes are respectively opened in the upper end face and the lower end face of the base, a plurality of air holes aligned with the vertical through holes are formed in the top face of the shell, and mounting holes matched with the base are formed in the bottom face of the shell. The utility model discloses a lamps and lanterns improve the radiating efficiency based on perpendicular perforating hole convection heat dissipation and casing conduction heat dissipation, but perpendicular perforating hole can receive the influence of rainwater and other materials simultaneously, and is more strict to LED encapsulation requirement, and the spectral range that sends out light is not adjustable.

In the growing process of animals and plants, the uniformity of light intensity is very important. For plants, if the light is not uniform, the plants in the areas with high illumination grow fast, and the plants in the areas with low illumination grow short, so that tall crops can shield short crops, and further unbalance of plant growth is formed; in addition, uneven lighting can also result in uneven regional water distribution, and higher moisture drying rates in high-lighting areas can cause water shortage in plants growing in high-lighting areas, resulting in reduced crop yield and quality. For animals, light has direct or indirect influence on the heat energy metabolism, behaviors, life cycle and the like of animal organisms, and the phenomenon of feeding and poor nursing of certain female animals are easily caused due to overlarge light. Different light colors have different influences on the production performance of animals, for example, red light can stimulate the sexual maturity of poultry, blue light can promote the skeletal development of poultry, green light can improve the immunity of poultry, and the like. Animals bred indoors need good light environment, for example, the illumination needs to be uniform, dark areas are reduced, and the feed intake, activity and substance metabolism of the animals are affected when the light intensity is too low; at the same time, a spectrum suitable for animals is needed, so that the animals can obtain more comprehensive energy.

Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, since the inventor studied a lot of documents and patents when making the present invention, but the space did not list all details and contents in detail, however, this is by no means the present invention does not possess these prior art features, but on the contrary the present invention has possessed all features of the prior art, and the applicant reserves the right to increase the related prior art in the background art.

SUMMERY OF THE UTILITY MODEL

Aiming at least part of defects in the prior art, the application provides a light source device suitable for animal and plant equipment, the device comprises a light source cover provided with a first opening and a second opening, the light source cover used for forming a protective shell is provided with a semi-closed space surrounding a base and a light source module in a coaxial arrangement mode with the base and the light source module, wherein the light source module is arranged on the base in a mode that a plurality of light sources are arranged into a multilayer circular ring or a rectangular ring around the central axis of the base and are divergently arranged towards the periphery; the inner side surface of the light source cover close to the first opening is provided with an arc-shaped part used for reflecting emergent light irradiated on the inner side of the light source cover, the arc-shaped part is provided with an arc surface set to be gradually changed in curvature in a mode that the light intensity of a reflected light irradiation target region passing through the arc-shaped part is gradually decreased from a direct light irradiation edge to the central axis direction of the base, and the central axis is the central axis of the light source cover, the base and the light source module which are coaxially arranged.

Preferably, the device comprises a light source cover for protecting the light source from being polluted by air, water vapor and impurities, wherein the light source cover encloses the light source module and the base in a manner that the bottom end of the light source cover can be provided with the first opening and the light source module and the base are coaxially arranged around the central axis. The bottom is provided with the first open-ended light source cover and is provided with the second opening that is used for with base installation complex in the upper end of keeping away from the bottom, and first opening or second opening are set up to circular or rectangle. A mounting ring for mounting the light source cover to the base is disposed inside the light source cover near the second opening, so that the light source cover can be detachably connected with the base based on the mounting ring. The cover top for protecting the base is detachably connected with the base through a base shaft installed in the center of the base, so that the cover top can be arranged in the direction of the second opening departing from the first opening and form a pyramid or conical structure for shielding the second opening; the upper part of the base axis may protrude from the cover top to connect with a grid on which the light source is mounted, so that the device may be suspended on the grid by the base axis.

Preferably, the light source module is disposed on a side of the base adjacent to the first opening in such a manner as to emit light in a direction toward the first opening of the light source cover. The light source module comprises a plurality of first light sources, second light sources, third light sources and fourth light sources which can emit different spectral structures, for example, the first light sources generate warm white light which is biased to red and orange, the warm white light can be strongly absorbed by chlorophyll of plants, the photosynthesis is strongest, and the light is expressed as strong photoperiod action; the second light source generates cold white light which is biased to blue-violet, chlorophyll absorbs most and shows strong photosynthesis and shaping effects; the third light source generates far-red light which can play a role in plant growth, plays an important role in photoperiod and seed formation, and controls flowering and fruit color; the fourth light source generates white light with uniform spectrum, and can effectively supplement the first light source, the second light source and the third light source, so that the spectrum range of emergent light of the light sources is more uniform.

Preferably, the light source module is mounted on the base in a manner that the plurality of light sources are divergently arranged towards the periphery around a central axis of the base based on a plurality of layers of circular rings or rectangular rings, so that the light intensity distribution of the emergent light in the direction towards the first opening gradually decreases from the central axis to the periphery, wherein the fourth light sources can be uniformly arranged on the circular rings or the rectangular rings at intervals, and the first light sources, the second light sources and the third light sources are arranged on the circular rings or the rectangular rings in a manner of filling gaps formed by the fourth light sources at intervals; the spectrum structure of the emergent light can be changed by controlling the arrangement proportion of the first light source to the fourth light source on the base, and the light source device can have better adaptability to different animal and plant illumination requirements.

Preferably, the outgoing light of the light source module generates direct light which directly irradiates a certain area due to the limitation of the light source cover, and the outgoing light which is irradiated to the inner side of the light source cover forms reflected light which is emitted from the first opening after being reflected. Because the distances from the light source to the irradiated points are different, the light intensity distribution of the direct light on a plane perpendicular to the central axis tends to gradually decrease from the central axis to the periphery, in order to improve the nonuniformity of the target area irradiated by the direct light, an arc part for reflecting the emergent light irradiated on the inner side of the light source cover is arranged on the inner side surface of the light source cover close to the first opening, and the arc part is provided with an arc surface with gradually changing curvature in a mode that the light intensity of the reflected light passing through the arc part to irradiate the target area gradually decreases from the irradiation edge of the direct light to the central axis, so that the position with different distances from the central axis in the target area can obtain the irradiation effect with uniform light intensity based on the superposition of the direct light and the reflected light. The surface of the arc part can be provided with a coating to enhance the reflection effect of the arc surface on emergent light of the light source module.

Preferably, the arc-shaped part is configured in a manner that the curvature of the arc-shaped surface gradually increases from the side far away from the first opening to the side close to the first opening; the coating thickness is configured in a mode that the coating thickness gradually increases from the side far away from the first opening to the side close to the first opening, so that the arc-shaped part can change the shape of the curved surface based on the curvature of the arc-shaped surface and the thickness of the coating at the same time, and the adjustment of the arc-shaped part on reflected light is facilitated.

Preferably, the base is provided with a mounting hole for assembling the light source module on a side close to the first opening, and the first to fourth light sources can be detachably connected with the mounting hole based on the assembling structure, so that the light source module can quickly and conveniently adjust the distribution positions of the first to fourth light sources to change the irradiation scheme.

Preferably, the base is provided with a plurality of ventilation holes penetrating through the base in a mode that air in the light source cover can be communicated with external air in an area where the mounting hole is not arranged, and the plurality of ventilation holes can form a surrounding type layout surrounding the mounting hole in a local part of the base. The heat of the light source module is transferred to the base through heat conduction, air near the base is thermally expanded to form ascending air flow, under the action of air thermodynamics, the air in the light source cover flows upwards to the base and is heated, and the base continuously discharges the heat generated by the light source module through the ascending air flow and the heat convection of the vent holes. A convex ring used for disturbing ascending airflow to form vortex is arranged on one side of the inner surface of the vent hole close to the first opening; the inner surface of the vent hole is provided with a plurality of fins which are arranged along the axial direction of the vent hole so as to increase the area of convection heat exchange; the ventilation hole can be based on the effect of the setting reinforcing heat convection of bulge loop and fin.

Preferably, when the air in the light source cover forms an ascending air current, the lower portion of the light source cover surrounding the light source module is provided with a convection window, so that the air outside the light source cover can enter the inside of the light source cover through the first opening and the convection window at the same time. The air horizontally entering the light source cover through the convection window can form mixed flow with the air entering from the first opening upwards, the air near the light source module is stirred, and the air is strengthened to the light source module and the bottom surface of the baseHeat radiation effect. The cover top can carry out heat exchange with cold air around the hot-air direction that flows from the ventilation hole, avoids hot-air to pile up at the top in light source application place.

Preferably, a detachable first filter screen is arranged on the convection window of the light source cover, a detachable second filter screen is arranged at the first opening, and a third filter screen is arranged between the cover top and the second opening; first filter screen to third filter screen can avoid the mosquito of light source application scene to get into light source cover inner space from the opening, and then pollute light source module or block up the ventilation hole, and first filter screen to third filter screen can regularly dismantle the demand clean in order to satisfy printing opacity and gas circulation.

Drawings

FIG. 1 is a simplified overall schematic diagram of a preferred embodiment of the present invention;

fig. 2 is a schematic diagram of the optical path of a preferred embodiment of the present invention;

fig. 3 is a schematic structural diagram of a base and a light source module according to a preferred embodiment of the present invention;

fig. 4 is a schematic view of a vent structure according to a preferred embodiment of the present invention.

List of reference numerals

100: a light source cover; 101: assembling a ring; 102: a convection window; 1021: a first filter screen; 103: an arc-shaped portion; 1031: coating; 104: covering the top of the cover; 105: a first opening; 1051: a second filter screen; 106: a second opening; 1061: a third filter screen; 200: a light source module; 201: a first light source; 202: a second light source; 203: a third light source; 204: a fourth light source; 300: a base; 301: mounting holes; 302: a vent hole; 3021: a convex ring; 3022: ribs; 303: a base shaft.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings. The present application proposes a light source device suitable for animal and plant equipment, as shown in fig. 1, the device includes a light source cover 100 for protecting the light source from being polluted by air moisture and impurities, the light source cover 100 surrounds the light source module 200 and the base 300 in a manner that the bottom end can be provided with a first opening 105 and the light source cover is symmetrically arranged around the central axis. The symmetrical arrangement of the light source covers 100 around the central axis may be configured such that a truncated cone or a prism is arranged around the central axis, the light source cover 100 having the first opening 105 at the bottom end is provided with the second opening 106 for mounting and matching with the base 300 at the upper end far away from the bottom end, and the first opening 105 or the second opening 106 is provided in a circular or rectangular shape.

Preferably, a mounting ring 101 for mounting the light source cover 100 to the base 300 is disposed on the inner side of the light source cover 100 near the second opening 106, and the mounting ring 101 may be a screw structure or a snap structure with interference fit, so that the light source cover 100 may be detachably connected with the base 300 based on the mounting ring 101.

Preferably, the cover top 104 for shielding the base 300 is detachably connected with the base 300 by a base shaft 303 installed at the center of the base 300, so that the cover top 104 can be arranged in a direction in which the second opening 106 faces away from the first opening 105 and form a pyramid or a cone structure that blocks the second opening 106; the upper part of the base axis 303 may protrude from the cover top 104 to be connected to a grid on which the light source is mounted, so that the device may be suspended on the grid by the base axis 303.

The light source module 200 is disposed on the side of the base 300 near the first opening 105 in such a manner as to emit light in a direction toward the first opening 105 of the light source housing 100. As shown in fig. 3, the light source module 200 includes a plurality of first light sources 201, second light sources 202, third light sources 203 and fourth light sources 204 capable of emitting different spectral structures, for example, the first light sources 201 generate warm white light biased to red-orange color, which can be strongly absorbed by chlorophyll of plants, and photosynthesis is strongest and shows strong photoperiod; the second light source 202 generates cold white light biased to bluish purple, and chlorophyll absorbs most, showing strong photosynthesis and formation; the third light source 203 generates far-red light which can play a role in plant growth, plays an important role in photoperiod and seed formation, and controls flowering and fruit color; the fourth light source 204 generates white light with a relatively uniform spectrum, and can effectively supplement the first light source 201, the second light source 202 and the third light source 203, so that the spectrum range of emergent light of the light sources is more uniform.

The light source module 200 is installed on the base 300 in a manner that a plurality of light sources are arranged into a multilayer circular ring or rectangular ring around the central axis of the base 300 and are divergently arranged to the periphery, so that the light intensity distribution of the emergent light in the direction towards the first opening 105 shows a trend of gradually decreasing from the central axis to the periphery, wherein the fourth light sources 204 can be uniformly arranged on the circular ring or rectangular ring at intervals, and the first light sources 201, the second light sources 202 and the third light sources 203 are arranged on the circular ring or rectangular ring in a manner of filling gaps arranged at intervals of the fourth light sources 204; alternatively, the first to fourth light sources 201 to 204 may be uniformly arranged on a circular or rectangular ring in a number ratio of 2: 4; the spectrum structure of the emergent light can be changed by controlling the arrangement proportion of the first light source 201 to the fourth light source 204 on the base 300, and the light source device can have better adaptability to different animal and plant illumination requirements.

As shown in fig. 2, the light emitted from the light source module 200 is directly emitted to a certain area due to the limitation of the light source cover 100, and the light emitted to the inside of the light source cover 100 is reflected to form reflected light emitted from the first opening 105. Because the distances from the light source to the irradiated point are different, the light intensity distribution of the direct light on a plane perpendicular to the central axis tends to gradually decrease from the central axis to the periphery, in order to improve the nonuniformity of the target area irradiated by the direct light, an arc-shaped part 103 for reflecting the emergent light irradiated on the inner side of the light source cover 100 is arranged on the inner side surface of the light source cover 100 close to the first opening 105, an arc-shaped surface set to be a gradually-changing curvature is arranged on the arc-shaped part 103 in a manner that the light intensity of the reflected light irradiated on the target area through the arc-shaped part 103 gradually decreases from the irradiation edge of the direct light to the central axis, so that the position different from the central axis in the target area can obtain the irradiation effect with uniform light intensity based on the superposition of the direct light and the reflected light, and the arc-shaped part 103 can be arranged in a manner that the curvature of the arc-shaped surface gradually increases from the side far from the first opening 105 to the side close to the first opening 105. The surface of the arc part 103 may be provided with a coating 1031 to enhance the reflection effect of the arc surface on the emergent light of the light source module 200, for example, the coating 1031 may be formed by spraying a high-reflectivity nano diffuse reflection coating, the thickness of the coating 1031 is configured in a manner of gradually increasing from a side away from the first opening 105 to a side close to the first opening 105, so that the arc part 103 may change the curved shape based on the curvature of the arc surface and the thickness of the coating 1031 at the same time, and the adjustment of the arc part 103 on the reflected light is facilitated.

Preferably, as shown in fig. 1 and 3, the base 300 is provided with a mounting hole 301 at a side close to the first opening 105 for mounting the light source module 200, and the first to fourth light sources 201 to 204 may be detachably connected with the mounting hole 301 based on a mounting structure, so that the light source module 200 may quickly and conveniently adjust the distribution positions of the first to fourth light sources 201 to 204 to change the irradiation scheme, for example, the mounting structure may be a screw thread.

Preferably, the base 300 is provided with a plurality of ventilation holes 302 penetrating through the base 300 in a region where the mounting hole 301 is not provided, in such a manner that air in the light source cover 100 can communicate with outside air, and the plurality of ventilation holes 302 may form a wraparound layout surrounding the mounting hole 301 in a part of the base 300. The heat of the light source module 200 is transferred to the base 300 through heat conduction, the air near the base 300 is thermally expanded to form an ascending air flow, under the thermodynamic action of the air, the air in the light source cover 100 flows upwards to the base 300 and is heated, and the base 300 continuously exhausts the heat generated by the light source module 200 through the heat convection of the ascending air flow and the ventilation hole 302. As shown in fig. 4, a convex ring 3021 for disturbing the ascending air current to form a vortex is provided on the side of the inner surface of the ventilation hole 302 near the first opening 105; a plurality of ribs 3022 arranged along the axis of the vent hole 302 are arranged on the inner surface of the vent hole 302 to increase the area of convective heat transfer; vent hole 302 may be configured to enhance convective heat transfer based on the configuration of collar 3021 and ribs 3022. For example, ribs 3022 may be arranged parallel to the axis of vent hole 302 or in a spiral configuration about the axis of vent hole 302 to reduce flow resistance or increase convective heat transfer area.

Preferably, in a case where the air inside the light source cover 100 forms an updraft, the light source cover 100 is opened with a convection window 102 at a lower portion surrounding the light source module 200, so that the air outside the light source cover 100 can enter the inside of the light source cover 100 through the first opening 105 and the convection window 102 at the same time. The air horizontally entering the inside of the light source housing 100 through the convection window 102 may form a mixed flow with the air entering upward from the first opening 105, agitate the air near the light source module 200, and enhance the heat dissipation effect of the air to the light source module 200 and the base 300. The cover top 104 can guide the hot air flowing out of the vent holes 302 to the periphery for heat exchange with the cold air, so as to avoid the hot air from accumulating at the top of the light source application site.

Preferably, a detachable first screen 1021 is arranged at the convection window 102 of the light source enclosure 100, a detachable second screen 1051 is arranged at the first opening 105, and a third screen 1061 is arranged in the middle of the enclosure top 104 and the second opening 106; the first filter screen 1021 to the third filter screen 1061 can prevent mosquitoes in a light source application scene from entering the inner space of the light source cover 100 from the opening, further polluting the light source module 200 or blocking the vent hole 302, and the first filter screen 1021 to the third filter screen 1061 can be detached and cleaned at regular time to meet the requirements of light transmission and gas circulation.

Preferably, the first opening 105 of the light source cover 100 is set to be rectangular, so that the irradiation target area of the light source device is rectangular, the regular rectangle is beneficial to arranging the light source devices at intervals so that the target areas are combined into an illumination range without a blind area, and the design of the arc-shaped part 103 of the device further optimizes the problem of uneven light intensity in the target area.

Preferably, a fan may be disposed on a side of the base 300 away from the first opening 105, and the fan may be powered on and perform forced circulation heat dissipation when natural circulation cannot meet the heat dissipation requirement of the light source module 200.

It should be noted that the above-mentioned embodiments are exemplary, and those skilled in the art can devise various solutions in light of the present disclosure, which are also within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present specification and drawings are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. A light source device suitable for animal and plant equipment, characterized in that the device comprises a light source cover (100) provided with a first opening (105) and a second opening (106), the light source cover (100) for forming a protective housing being provided with a semi-enclosed space surrounding a base (300) and a light source module (200) in a coaxial arrangement with the base (300) and the light source module (200), wherein:

an arc-shaped part (103) used for reflecting emergent light irradiated on the inner side of the light source cover (100) is arranged on the inner side surface of the light source cover (100) close to the first opening (105), and the arc-shaped part (103) is provided with an arc surface which is set to be gradually changed in curvature in a mode that the light intensity of a reflected light irradiation target area passing through the arc-shaped part (103) is gradually decreased from a direct light irradiation edge to the central axis direction of the base (300).

2. The device according to claim 1, characterized in that the arc-shaped portion (103) is arranged in such a way that the curvature of the arc-shaped surface gradually increases from the side remote from the first opening (105) to the side close to the first opening (105).

3. The device according to claim 1, wherein the light source module (200) is mounted on the base (300) in such a way that a plurality of light sources are arranged in a multi-layer circular or rectangular ring around the central axis of the base (300) and are divergently arranged to the periphery.

4. The device according to claim 3, characterized in that the light source module (200) is arranged on the side of the base (300) close to the first opening (105) in such a way that it can emit light in the direction of the first opening (105) of the light source cover (100); the light source module (200) comprises a number of first (201), second (202), third (203) and fourth (204) light sources capable of emitting different spectral structures, wherein:

the fourth light sources (204) are arranged on the circular ring or the rectangular ring at regular intervals, and the first light sources (201), the second light sources (202) and the third light sources (203) are arranged on the circular ring or the rectangular ring in a manner of filling gaps of the fourth light sources (204) which are arranged at intervals.

5. The device according to claim 1, wherein the base (300) is provided with a mounting hole (301) for mounting the light source module (200) at a side close to the first opening (105), the base (300) is provided with a plurality of ventilation holes (302) penetrating through the base (300) at a region where the mounting hole (301) is not provided, in such a manner that air in the light source cover (100) can communicate with external air, and the plurality of ventilation holes (302) form a surrounding layout surrounding the mounting hole (301) at a part of the base (300).

6. An arrangement according to claim 5, characterized in that a protruding ring (3021) for disturbing the ascending air flow to form a vortex is arranged at the side of the inner surface of the ventilation hole (302) near the first opening (105); a plurality of ribs (3022) arranged along the axial direction of the ventilation hole (302) are arranged on the inner surface of the ventilation hole (302).

7. The apparatus according to claim 6, wherein, when the air in the light source housing (100) forms an updraft, the light source housing (100) is opened with a convection window (102) at a lower portion of a position surrounding the light source module (200), so that the air outside the light source housing (100) can enter the inside of the light source housing (100) through the first opening (105) and the convection window (102) at the same time.

8. The device according to claim 7, wherein a detachable first screen (1021) is arranged at the convection window (102) of the light source enclosure (100), a detachable second screen (1051) is arranged at the first opening (105), and a third screen (1061) is arranged in the middle of the enclosure roof (104) and the second opening (106).

9. The device according to claim 1, characterized in that the light source cover (100) having a bottom end provided with the first opening (105) is provided with the second opening (106) for mounting engagement with the base (300) at an upper end remote from the bottom end, the light source cover (100) being detachably connectable with the base (300) based on a mounting ring (101) arranged inside the light source cover (100) close to the second opening (106).

10. The device according to claim 9, characterized in that a cover top (104) for shielding the base (300) is detachably connected with the base (300) by a base shaft (303) mounted in the center of the base (300), wherein an upper part of the base shaft (303) protrudes the cover top (104) to be connected with a grid on which the device is mounted, so that the device can be suspended on the grid by the base shaft (303).