An artificial light source device suitable for growing strawberries in a plant factory

Abstract

This utility model discloses an artificial light source device suitable for strawberry cultivation in plant factories, including a lamp housing, an aluminum substrate, and a control panel. A light source module is fixedly connected to the surface of the aluminum substrate. The light source module includes four independent light source channels divided by wavelength: a first light source channel emitting 660nm red light, a second light source channel emitting 450nm blue light, a third light source channel emitting 730nm far-red light, and a fourth light source channel emitting 590nm yellow light. The LEDs are all COB LED packages and are welded to the aluminum substrate according to a uniform distribution and symmetrical arrangement. A driving circuit module corresponding to each light source module is fixedly connected to the other side wall of the aluminum substrate. This utility model can increase the sugar content of strawberry fruits and reduce the rate of deformed fruits, solving the problem of traditional general-purpose light sources having a single spectrum and being unable to adapt to the needs of different strawberry growth stages. Compared with traditional light sources that are manually adjusted, it can reduce manual maintenance time and lower the operating costs for growers.

Description

Technical Field

[0001] This utility model relates to the field of strawberry cultivation technology, specifically an artificial light source device suitable for strawberry cultivation in plant factories. Background Technology

[0002] In strawberry cultivation, artificial light sources are crucial for ensuring year-round production. However, existing technologies suffer from significant drawbacks: poor spectral adaptability, with most being general-purpose LED lights using only red or red-blue light combinations. These fail to meet the specific needs of strawberry seedlings, where blue light is required to prevent excessive growth, and during flowering and fruiting, far-red and yellow light are needed to promote flower bud formation and sugar accumulation. This results in excessive seedling growth, high rates of fruit deformities, and low yields per acre. Furthermore, the control methods are outdated, relying on mechanical knob adjustments without preset modes or intelligent interaction. Frequent manual parameter recording and adjustments are necessary, leading to errors, and most cannot be integrated with a central control system. Therefore, those skilled in the art have developed an artificial light source device suitable for strawberry cultivation in plant factories to address the problems described in the background. Utility Model Content

[0003] The purpose of this invention is to provide an artificial light source device suitable for growing strawberries in plant factories, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An artificial light source device suitable for growing strawberries in a plant factory includes a lamp housing and an aluminum substrate. A light source module is fixedly connected to the surface of the aluminum substrate. The light source module includes four independent light source channels divided by wavelength: a first light source channel emitting 660nm red light, a second light source channel emitting 450nm blue light, a third light source channel emitting 730nm far-red light, and a fourth light source channel emitting 590nm yellow light. The LEDs are all COB LED packaged and welded to the aluminum substrate according to the principle of uniform distribution and symmetrical arrangement. A driving circuit module corresponding to the light source module is fixedly connected to the other side wall of the aluminum substrate.

[0005] Furthermore, each of the driving circuit modules uses a Buck step-down DC-DC converter, with the output voltage matching the rated operating voltage of each LED light source channel, and each driving circuit module has a built-in pulse width modulation signal receiver.

[0006] Furthermore, the control panel is equipped with an MCU microcontroller unit and an interaction module. The MCU microcontroller unit is electrically connected to the drive circuit module and the interaction module respectively, and can generate PWM signals according to preset modes or user commands and send them to the drive circuit module.

[0007] Furthermore, the control panel has three built-in preset spectral modes, namely: Seedling mode: The PWM duty cycle of the first and second light source channels is 50%, and the PWM duty cycle of the third and fourth light source channels is 0%. The light cycle is set to 16 hours of light and 8 hours of darkness. Nutritional growth mode: The PWM duty cycle of the first light source channel is 80%, the PWM duty cycle of the second light source channel is 20%, and the PWM duty cycle of the third and fourth light source channels is 0%. The photocycle is set to 16 hours of light and 8 hours of darkness. Flowering and fruiting mode: The PWM duty cycle of the first light source channel is 62%, the PWM duty cycle of the second light source channel is 30%, the PWM duty cycle of the third light source channel is 5%, the PWM duty cycle of the fourth light source channel is 3%, and the light cycle is set to 12 hours of light and 12 hours of darkness.

[0008] Furthermore, the interaction module includes a touch screen and a wireless communication module. The wireless communication module supports connection with a mobile terminal APP, and users can switch spectral modes, customize the PWM duty cycle, and set optical period parameters through the touch screen or the mobile terminal APP.

[0009] Furthermore, the control panel also supports communication with the central control system of the plant factory, and can receive strawberry growth status data sent by the central control system, such as fruit sugar content, plant height, and number of flower buds, and automatically adjust the PWM duty cycle of each light source channel according to the data to realize closed-loop linkage between spectrum adjustment and strawberry growth status.

[0010] Furthermore, a light-transmitting cover is fixedly connected to the opening of the lamp housing, and an aluminum substrate is fixedly connected to the inner side wall of the lamp housing, with the aluminum substrate located inside the light-transmitting cover.

[0011] Furthermore, the light-transmitting cover is made of polycarbonate material.

[0012] Furthermore, a rotating shaft is fixedly connected to the side wall of the lamp housing, and a fixed ear plate is rotatably connected to the rotating shaft surface with damping. The fixed ear plate surface is provided with bolt holes for installation.

[0013] Furthermore, the lamp housing is fixedly connected with uniformly arranged heat dissipation fins, which are made of copper and aluminum sheets stacked and pressed together.

[0014] By adopting the above technical solution Compared with the prior art, the beneficial effects of this utility model are: 1. Four independent light source channels, supporting preset modes and custom adjustments, can accurately match the spectral requirements of strawberries at each growth stage. During the seedling stage, the high proportion of blue light inhibits excessive growth and promotes root development; during the vegetative growth stage, the high proportion of red light accelerates stem and leaf growth; and during the flowering and fruiting stage, far-red and yellow light are supplemented to promote flower bud differentiation and the accumulation of sugar and anthocyanins in the fruit. In practical applications, this can increase the sugar content of strawberry fruits and reduce the rate of deformed fruits. It solves the problem that traditional general-purpose light sources have a single spectrum and cannot adapt to the needs of strawberry stages. The interactive module supports dual-terminal operation on touch screen and mobile APP, and is compatible with the central control system, reducing manual intervention. Compared with traditional light sources that are manually adjusted, it can reduce manual maintenance time and lower the operating costs for growers.

[0015] 2. The light-transmitting cover is made of polycarbonate material, which has high light transmittance, resistance to high humidity corrosion, and impact resistance. Combined with the structural design of the lamp housing, the copper-aluminum composite structure of the heat dissipation fins efficiently dissipates heat, keeping the LED lamp bead operating temperature below 60℃ and increasing the lifespan of the lamp beads. The hinge and fixing ear plate design of the lamp housing supports angle adjustment and convenient installation. It can be adapted to multi-layer planting racks in plant factories and supports modular splicing. It can meet the needs of large-scale commercial strawberry factories, as well as home balcony planting boxes, small seedling centers, and other scenarios, with a wide range of applications. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of an artificial light source device suitable for growing strawberries in a plant factory; Figure 2 A schematic diagram of the planar structure of the lamp housing in an artificial light source device suitable for growing strawberries in a plant factory; Figure 3 A cross-sectional view of the lamp housing of an artificial light source device suitable for growing strawberries in a plant factory; Figure 4 This is a cross-sectional view of the heat dissipation fins in an artificial light source device suitable for growing strawberries in a plant factory.

[0017] In the diagram: 1. Lamp housing; 2. Aluminum substrate; 3. Light source module; 4. Driver circuit module; 5. Light-transmitting cover; 6. Heat dissipation fins; 601. Copper sheet; 602. Aluminum sheet; 7. Control panel; 8. Shaft; 9. Fixing ear plate; 10. Bolt hole; 11. Interactive module. Detailed Implementation

[0018] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0019] Please see Figures 1-4 This utility model provides an artificial light source device suitable for strawberry cultivation in plant factories, including a lamp housing 1, an aluminum substrate 2, and a control panel 7. A light source module 3 is fixedly connected to the surface of the aluminum substrate 2. The light source module 3 includes four independent light source channels divided by wavelength: a first light source channel emitting 660nm red light, a second light source channel emitting 450nm blue light, a third light source channel emitting 730nm far-red light, and a fourth light source channel emitting 590nm yellow light. The LEDs are all COB LED packaged and welded to the aluminum substrate 2 according to the principle of uniform distribution and symmetrical arrangement. A driving circuit module 4 corresponding to the light source module 3 is fixedly connected to the other side wall of the aluminum substrate 2. The driving circuit module 4 uses a Buck step-down DC-DC converter, and the output voltage is matched with the rated operating voltage of the LEDs of each light source channel. Each driving circuit module 4 has a built-in pulse width modulation signal receiver.

[0020] The control panel 7 contains an MCU microcontroller unit and an interactive module 11. The MCU microcontroller unit is electrically connected to the drive circuit module 4 and the interactive module 11, respectively. It can generate PWM signals according to preset modes or user commands and send them to the drive circuit module 4. The control panel 7 has three preset spectral modes: Seedling mode: the PWM duty cycle of the first and second light source channels is 50%, the PWM duty cycle of the third and fourth light source channels is 0%, and the photoperiod is set to 16 hours of light and 8 hours of darkness; Vegetative growth mode: the PWM duty cycle of the first light source channel is 80%, the PWM duty cycle of the second light source channel is 20%, the PWM duty cycle of the third and fourth light source channels is 0%, and the photoperiod is set to 16 hours of light and 8 hours of darkness; Flowering and fruiting mode: the PWM duty cycle of the first light source channel is 62%, the PWM duty cycle of the second light source channel is 30%, the PWM duty cycle of the third light source channel is 5%, the PWM duty cycle of the fourth light source channel is 3%, and the photoperiod is set to 12 hours of light and 12 hours of darkness.

[0021] The interactive module 11 includes a touch screen and a wireless communication module. The wireless communication module supports connection with a mobile terminal APP. Users can switch spectral modes, customize the PWM duty cycle, and set photoperiod parameters through the touch screen or mobile terminal APP. The control panel 7 also supports communication connection with the central control system of the plant factory. It can receive strawberry growth status data sent by the central control system, such as fruit sugar content, plant height, and number of flower buds, and automatically adjust the PWM duty cycle of each light source channel according to the data to achieve closed-loop linkage between spectral adjustment and strawberry growth status.

[0022] For example, the external power supply is processed by the drive circuit module 4, which uses a Buck step-down DC-DC converter inside the lamp housing 1, and converted into the rated operating voltage of each light source channel LED. This power supply the COB LED beads of the four independent light source channels (660nm red light, 450nm blue light, 730nm far-red light, and 590nm yellow light) on the aluminum substrate 2. After the beads emit light, the light passes through the polycarbonate light-transmitting cover 5 and is projected onto the strawberry planting surface. The MCU microcontroller unit in the control panel 7 can receive the preset mode (seedling, vegetative growth, flowering and fruiting) or custom command selected by the user through the interaction module 11 to generate PWM signals. It can also adjust the PWM signals in combination with the strawberry growth status data sent by the central control system of the plant factory. The signals are transmitted to the drive circuit module 4 to adjust the current and brightness of each channel, achieving precise spectrum and photoperiod control. The four independent light source channels support preset modes and custom adjustments, which can accurately match the different growth stages of the strawberry. The system addresses the spectral requirements of different stages of strawberry cultivation. During the seedling stage, a high proportion of blue light inhibits excessive growth and promotes root development. During the vegetative growth stage, a high proportion of red light accelerates stem and leaf growth. During the flowering and fruiting stage, supplemental far-red and yellow light promotes flower bud differentiation and the accumulation of sugar and anthocyanins in the fruit. In practical applications, this can increase the sugar content of strawberry fruits and reduce the rate of deformed fruits. It solves the problem that traditional general-purpose light sources have a single spectrum and cannot adapt to the needs of different stages of strawberry cultivation. The interactive module 11 supports dual-terminal operation via touch screen and mobile APP, and is compatible with the central control system, reducing manual intervention. Compared with traditional light sources that are manually adjusted, it can reduce manual maintenance time and lower the operating costs for growers.

[0023] In this embodiment, a light-transmitting cover 5 is fixedly connected to the opening of the lamp housing 1, and an aluminum substrate 2 is fixedly connected to the inner side wall of the lamp housing 1, with the aluminum substrate 2 located inside the light-transmitting cover 5. The light-transmitting cover 5 is made of polycarbonate material. A rotating shaft 8 is fixedly connected to the side wall of the lamp housing 1, and a fixing ear plate 9 is connected to the rotating shaft 8 with damping rotation. The fixing ear plate 9 has bolt holes 10 for installation on its surface. The lamp housing 1 is fixedly connected to uniformly arranged heat dissipation fins 6, which are formed by stacking and pressing copper sheets 601 and aluminum sheets 602. During the operation of the device, the heat generated by the light source module 3 and the drive circuit module 4 is transferred to the aluminum substrate 2, and the aluminum substrate 2 conducts the heat to the heat dissipation fins 6 on the outside of the lamp housing 1. The heat dissipation fins 6 are formed by stacking and pressing copper sheets 601 and aluminum sheets 602. The high thermal conductivity of copper accelerates heat conduction, and the large surface area of ​​aluminum promotes heat dissipation, quickly reducing the internal temperature of the lamp body and preventing the LED beads from decaying due to high temperature.

[0024] Meanwhile, the rotating shaft 8 on the side wall of the lamp housing 1 cooperates with the fixed ear plate 9, allowing users to adjust the lamp body angle through damped rotation. The device is then installed on the planting rack using the bolt holes 10 on the fixed ear plate 9. Combined with the high light transmittance of the polycarbonate light-transmitting cover 5, the light coverage range and angle are adapted to the needs of strawberry cultivation. The light-transmitting cover 5 is made of polycarbonate material, which has the characteristics of high light transmittance, high humidity corrosion resistance, and impact resistance. Combined with the structural design of the lamp housing 1, the copper-aluminum composite structure of the heat dissipation fins 6 efficiently dissipates heat, keeping the LED lamp bead operating temperature below 60℃ and increasing the lifespan of the lamp bead. The design of the rotating shaft 8 and the fixed ear plate 9 of the lamp housing 1 supports angle adjustment and convenient installation. It can be adapted to multi-layer planting racks in plant factories and supports modular splicing. It can meet the large-scale planting needs of commercial strawberry factories, as well as be adapted to home balcony planting boxes, small seedling centers, and other scenarios, making it widely applicable.

[0025] It should be noted that the external power supply is processed by the drive circuit module 4, which uses a Buck step-down DC-DC converter inside the lamp housing 1, and converted into the rated operating voltage of each light source channel LED. This power supply the COB LED beads of the four independent light source channels (660nm red light, 450nm blue light, 730nm far-red light, and 590nm yellow light) on the aluminum substrate 2. After the beads emit light, the light passes through the polycarbonate light-transmitting cover 5 and is projected onto the strawberry planting surface. The MCU microcontroller unit in the control panel 7 can receive the preset mode (seedling, vegetative growth, flowering and fruiting) or custom commands selected by the user through the interactive module 11 to generate PWM signals. It can also adjust the PWM signals in combination with the strawberry growth status data sent by the central control system of the plant factory. The signals are transmitted to the drive circuit module 4 to adjust the current and brightness of each channel, achieving precise spectrum and photoperiod control. During the operation of the equipment, the heat generated by the light source module 3 and the drive circuit module 4 is transferred to the aluminum substrate 2. The aluminum substrate 2 conducts heat to the heat dissipation fins 6 on the outside of the lamp housing 1. The heat dissipation fins 6 are made of copper sheet 601 and aluminum sheet 602 stacked and pressed together. The high thermal conductivity of copper accelerates heat conduction, and the large surface area of ​​aluminum promotes heat dissipation, quickly reducing the internal temperature of the lamp body and preventing the LED beads from decaying due to high temperature. At the same time, the rotating shaft 8 on the side wall of the lamp housing 1 cooperates with the fixing ear plate 9. The user can adjust the angle of the lamp body by damping rotation. Then, the device is installed on the planting rack using the bolt holes 10 of the fixing ear plate 9. Combined with the high light transmittance of the polycarbonate light-transmitting cover 5, it ensures that the light coverage range and angle are adapted to the needs of strawberry planting.

[0026] It should be noted that the four independent light source channels, which support preset modes and custom adjustments, can accurately match the spectral requirements of strawberries at each growth stage. During the seedling stage, the high proportion of blue light inhibits excessive growth and promotes root development. During the vegetative growth stage, the high proportion of red light accelerates stem and leaf growth. During the flowering and fruiting stage, far-red and yellow light are added to promote flower bud differentiation and the accumulation of sugar and anthocyanins in the fruit. In practical applications, this can increase the sugar content of strawberry fruits and reduce the rate of deformed fruits, solving the problem that traditional general-purpose light sources have a single spectrum and cannot adapt to the needs of strawberry stages. The interactive module 11 supports dual-terminal operation via touchscreen and mobile APP, and is compatible with the central control system, reducing manual intervention. Compared with traditional light sources that are manually adjusted, it can reduce manual maintenance time and lower the operating costs for growers. The light-transmitting cover 5 is made of polycarbonate material, which has high light transmittance, resistance to high humidity corrosion, and impact resistance. Combined with the structural design of the lamp housing 1, the copper-aluminum composite structure of the heat dissipation fins 6 efficiently dissipates heat, keeping the LED lamp bead operating temperature below 60℃ and increasing the lifespan of the lamp beads. The design of the rotating shaft 8 and the fixed ear plate 9 of the lamp housing 1 supports angle adjustment and convenient installation. It can be adapted to multi-layer planting racks in plant factories and supports modular splicing. It can meet the large-scale planting needs of commercial strawberry factories, as well as home balcony planting boxes, small seedling centers, and other scenarios, making it widely applicable.

[0027] This specification describes embodiments, but not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An artificial light source device suitable for strawberry cultivation in plant factories, characterized in that, The system includes a lamp housing (1), an aluminum substrate (2), and a control panel (7). A light source module (3) is fixedly connected to the surface of the aluminum substrate (2). The light source module (3) includes four independent light source channels divided by wavelength: a first light source channel that emits 660nm red light, a second light source channel that emits 450nm blue light, a third light source channel that emits 730nm far-red light, and a fourth light source channel that emits 590nm yellow light. The lamp beads are all packaged with COB LEDs and are welded to the aluminum substrate (2) according to the principle of uniform distribution and symmetrical arrangement. A driving circuit module (4) corresponding to the light source module (3) is fixedly connected to the other side wall of the aluminum substrate (2).

2. The artificial light source device for strawberry cultivation in a plant factory according to claim 1, characterized in that, The driving circuit modules (4) all adopt Buck step-down DC-DC converters, and the output voltage is matched with the rated operating voltage of each light source channel LED. Each driving circuit module (4) has a built-in pulse width modulation signal receiver.

3. The artificial light source device for strawberry cultivation in a plant factory according to claim 1, characterized in that, The control panel (7) is equipped with an MCU microcontroller unit and an interactive module (11). The MCU microcontroller unit is electrically connected to the drive circuit module (4) and the interactive module (11) respectively. It can generate PWM signals according to preset modes or user instructions and send them to the drive circuit module (4).

4. The artificial light source device for strawberry cultivation in a plant factory according to claim 1, characterized in that, The control panel (7) has three built-in preset spectral modes, namely: Seedling mode: The PWM duty cycle of the first and second light source channels is 50%, and the PWM duty cycle of the third and fourth light source channels is 0%. The light cycle is set to 16 hours of light and 8 hours of darkness. Nutritional growth mode: The PWM duty cycle of the first light source channel is 80%, the PWM duty cycle of the second light source channel is 20%, and the PWM duty cycle of the third and fourth light source channels is 0%. The photocycle is set to 16 hours of light and 8 hours of darkness. Flowering and fruiting mode: The PWM duty cycle of the first light source channel is 62%, the PWM duty cycle of the second light source channel is 30%, the PWM duty cycle of the third light source channel is 5%, the PWM duty cycle of the fourth light source channel is 3%, and the light cycle is set to 12 hours of light and 12 hours of darkness.

5. The artificial light source device for strawberry cultivation in a plant factory according to claim 3, characterized in that, The interactive module (11) includes a touch screen and a wireless communication module. The wireless communication module supports connection with a mobile terminal APP. Users can switch the spectrum mode, customize the PWM duty cycle and set the optical period parameters through the touch screen or the mobile terminal APP.

6. The artificial light source device for strawberry cultivation in a plant factory according to claim 1, characterized in that, The control panel (7) also supports communication connection with the central control system of the plant factory, which is used to receive strawberry growth status data sent by the central control system and automatically adjust the PWM duty cycle of each light source channel according to the data to realize the closed-loop linkage between spectrum adjustment and strawberry growth status.

7. The artificial light source device for strawberry cultivation in a plant factory according to claim 1, characterized in that, A light-transmitting cover (5) is fixedly connected to the opening of the lamp housing (1), and an aluminum substrate (2) is fixedly connected to the inner wall of the lamp housing (1), with the aluminum substrate (2) located inside the light-transmitting cover (5).

8. The artificial light source device for strawberry cultivation in a plant factory according to claim 7, characterized in that, The light-transmitting cover (5) is made of polycarbonate material.

9. The artificial light source device for strawberry cultivation in a plant factory according to claim 1, characterized in that, The lamp housing (1) is fixedly connected to a rotating shaft (8) on its side wall. The rotating shaft (8) is connected to a fixed ear plate (9) with damping rotation. The fixed ear plate (9) has bolt holes (10) for installation on its surface.

10. The artificial light source device for strawberry cultivation in a plant factory according to claim 1, characterized in that, The lamp housing (1) is fixedly connected with uniformly arranged heat dissipation fins (6), which are formed by stacking and pressing copper sheets (601) and aluminum sheets (602).

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