Smart light

Abstract

The application provides a kind of intelligent lamp, belongs to lighting equipment technical field, including lamp main casing, light source board, metal patch, drive circuit board and radio frequency component.The intelligent lamp provided by the application avoids the shielding effect of metal parts in the lamp body on signals by setting the metal patch outside the light source board, and the metal patch and the metal layer in the light source board form a microstrip antenna with each other, the distance between the metal patch and the light source board is only 1-3mm, and the radio frequency component is set on the drive circuit board on the other side of the light source board, which avoids the metal patch from protruding too high and causing the light emitted by the light source to be blocked, preventing the setting of the antenna from causing shadows when the lamp is lighting.Meanwhile, the metal patch can also be set in any shape according to the arrangement of the light source, avoiding the influence of the metal patch on the light, and making the lighting effect of the lamp better.

Description

Technical Field

[0001] This invention belongs to the field of lighting equipment technology, and more specifically, relates to an intelligent lamp. Background Technology

[0002] With the development of technology and the continuous progress of society, the types of smart lighting fixtures are also increasing, bringing great convenience to people's daily work and life. Smart lights are a type of lighting fixture capable of data transmission with main control devices such as mobile phones and can be controlled by these devices. The internal components of an IoT smart light mainly include a power module, a lighting module, a signal transceiver module, and a product structure module. The signal transceiver module consists of a radio frequency module and an antenna. However, to reduce the shielding effect of the metal parts in the lamp body on electromagnetic waves and increase the wireless communication distance, existing smart lights typically place the antenna on the light source side of the light source board. This antenna placement causes the lamp to cast shadows during illumination, severely affecting the lighting effect. Summary of the Invention

[0003] The purpose of this invention is to provide a smart lamp that solves the problem that the antenna in existing smart lamps causes shadows during illumination, affecting the lighting effect.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: to provide an intelligent lamp for indoor environmental lighting, comprising:

[0005] The main housing of the lamp has a hollow internal structure;

[0006] A light source board is disposed inside the main housing of the lamp, including a metal layer and an insulating layer. Multiple light sources are disposed on the insulating layer, and connection lines for connecting the light sources are disposed on the insulating layer.

[0007] A metal patch is located on the side of the insulating layer away from the metal layer. The metal patch and the metal layer interact to form a microstrip antenna, which is used to transmit or receive electrical signals.

[0008] The driving circuit board is located inside the main housing of the lamp, inside the light source board, and is used to connect to external circuits. One end of the driving circuit board is fixed to the inner side of the light source board.

[0009] The radio frequency (RF) component includes an RF module and a power supply structure, wherein the power supply structure is used to electrically connect the RF module to the metal patch, and the RF module is disposed on the driver circuit board.

[0010] In one possible implementation, a connecting medium is further provided between the metal patch and the light source board, and the shape of the connecting medium matches that of the metal patch.

[0011] In one possible implementation, the end of the drive circuit board near the light source board is further provided with a connecting support plate for mounting the metal patch, and the connecting support plate is disposed through the light source board, with the metal patch fixed to the end of the connecting support plate.

[0012] In one possible implementation, the power supply structure is a microstrip feed line disposed on the connecting support plate. The microstrip feed line is disposed close to the side of the connecting support plate, one end of the microstrip feed line is connected to a metal patch, and the other end of the microstrip feed line is connected to an RF module.

[0013] In one possible implementation, the end of the connecting support plate is further provided with a mounting hole for mounting the metal patch, and the side of the metal patch is further provided with an insertion part that is adapted to the mounting hole, and the end of the microstrip feeder is located inside the mounting hole.

[0014] In one possible implementation, the power supply structure is a conductive element disposed between the radio frequency component and the metal patch, the conductive element being disposed through the light source board.

[0015] In one possible implementation, the side of the driving circuit board is further provided with an RF PCB board parallel to the light source board. The power supply structure is a power supply branch coiled on the RF PCB board near the light source board. The light source board is also provided with a coupling via that penetrates the light source board. The coupling via is located between the power supply branch and the metal patch.

[0016] In one possible implementation, the radio frequency component is also disposed on the side of the radio frequency PCB board, and one end of the feed branch is electrically connected to the radio frequency component.

[0017] In one possible implementation, the metal patch is a ring or a regular polygon, and the center of the metal patch coincides with the center of the light source board.

[0018] The beneficial effects of the smart lamp provided by this invention are as follows: Compared with the prior art, a light source board is provided inside the main housing of the lamp, and light is emitted from the light source on the outer surface of the light source board for illumination. Simultaneously, a driving circuit board and a metal patch are also provided inside the main housing. The driving circuit board and the metal patch are located on opposite sides of the light source board, with the metal patch being parallel to the light source board and located on its outer side. An radio frequency component consisting of a radio frequency module and a feeding structure is also provided on the driving circuit board. This smart lamp, by placing the metal patch on the outer side of the light source board, allows the metal patch and the light source board to interact and form a microstrip antenna. By using the light source board itself as part of the antenna, the shielding effect of metal components inside the lamp is avoided. Compared with existing antennas, the metal patch and the light source board forming an antenna as a whole allows the metal patch to be very close to the light source 2, avoiding the metal patch extending too far from the light source board 2 and blocking the light emitted by the light source, and preventing the antenna from causing shadows during illumination. Meanwhile, the metal patch can be set into any shape according to the arrangement of the light source, avoiding the influence of the metal patch on the light, making the light source arrangement more flexible and the lighting effect of the lamp better. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the smart lamp provided in Embodiment 1 of the present invention;

[0021] Figure 2 This is a cross-sectional view of the smart lamp provided in Embodiment 1 of the present invention;

[0022] Figure 3 This is a schematic diagram of the radio frequency PCB board used in Embodiment 1 of the present invention;

[0023] Figure 4 This is a cross-sectional view of the smart lamp provided in Embodiment 2 of the present invention;

[0024] Figure 5 This is a cross-sectional view of the smart lamp provided in Embodiment 3 of the present invention.

[0025] In the diagram: 1. Lamp housing; 2. Light source board; 3. Metal patch; 4. Driver circuit board; 5. RF module; 6. Power supply structure; 7. Connecting dielectric section; 8. Light source; 9. Connecting support plate; 10. Microstrip feeder; 11. Conductive component; 12. Power supply stub; 13. Coupling via; 14. RF PCB board. Detailed Implementation

[0026] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0027] Please refer to the following: Figures 1 to 5 The present invention will now describe the intelligent lamp provided. The intelligent lamp includes a main housing 1, a light source board 2, a metal patch 3, a driver circuit board 4, and a radio frequency (RF) component. The main housing 1 has a hollow internal structure. The light source board 2 is disposed inside the main housing 1 and includes a metal layer and an insulating layer. Multiple light sources 8 are disposed on the insulating layer, and connection lines for connecting the light sources are also disposed on the insulating layer. The metal patch 3 is located on the outer side of the light source board 2 (the side of the insulating layer away from the metal layer). The metal patch 3 and the metal layer on the light source board 2 interact to form a microstrip antenna, which is used to transmit or receive electrical signals. The driver circuit board 4 is disposed inside the main housing 1, inside the light source board 2, and is used to connect external circuits. One end of the driver circuit board 4 is fixed to the inner surface of the light source board 2. The RF component includes an RF module 5 and a feeding structure 6. The feeding structure 6 electrically connects the RF module 5 to the metal patch 3. The RF module 5 is disposed on the driver circuit board 4.

[0028] The smart lamp provided in this embodiment, compared with the prior art, has a light source board 2 disposed inside the main housing 1 of the lamp, and emits light through a light source 8 on the outer surface of the light source board 2 for illumination. Simultaneously, a driving circuit board 4 and a metal patch 3 are also disposed inside the main housing 1. The driving circuit board 4 and the metal patch 3 are respectively located on both sides of the light source board 2, with the metal patch 3 being parallel or nearly parallel to the light source board 2 and located on the outer side of the light source board 2. An radio frequency component consisting of a radio frequency module 5 and a feeding structure 6 is also disposed on the driving circuit board 4. This smart lamp, by placing the metal patch 3 on the outer side of the light source board 2, allows the metal patch 3 and the metal layer on the light source board 2 to interact and form a microstrip antenna. By using the light source board itself as part of the antenna, the shielding effect of the metal components inside the lamp is avoided. Compared to existing antennas, the metal patch 3 and the light source board 2 form an integrated antenna, allowing the metal patch 3 to be positioned very close to the light source board 2. This avoids the metal patch 3 protruding too far from the light source board 2 and thus preventing it from blocking the light emitted by the light source 8. It also prevents the antenna from casting shadows during illumination, resulting in better lighting performance. Furthermore, the metal patch 3 can be shaped arbitrarily according to the arrangement of the light source, avoiding any interference with the illumination and further enhancing the lighting effect.

[0029] It should be noted that the metal patch 3 is generally arranged parallel to or nearly parallel to the light source board 2. The minimum distance h between the metal patch 3 (i.e., the antenna) and the light source board 2 generally satisfies h < λ / 10, where λ is the wavelength in free space, and h is typically 1-3 mm. The metal patch 3 is a sheet made of metal, and its shape can be adjusted according to the arrangement of the light source, such as by hollowing it out, to achieve better conformal design and reduce the impact on the light source. To support the LED light source and provide heat dissipation, the light source board 2 is usually made of aluminum, which ensures the thermal stability of the LED light source under operating conditions and extends its service life. The light source board 2 consists of an aluminum plate, an insulating layer on the surface of the aluminum plate, and layout circuitry on the insulating layer. The aluminum substrate of the light source serves as the grounding conductive plate of the microstrip antenna, and the radiating conductor above the light source board 2 serves as the radiating patch of the microstrip antenna. The combination of the two realizes the microstrip antenna structure. Meanwhile, the RF module 5 has two implementation methods: 1. Onboard, where the RF circuit is designed on the driver board to process RF signals and realize wireless communication and control functions; 2. Module, where the module integrates the RF chip and its peripheral circuits, and the module is then mounted on the driver board as a module via SMT, or plugged into the driver board as a plug-in.

[0030] Among some possible implementations, such as Figure 1 , Figure 2 and Figure 5As shown, a connecting medium 7 is also provided between the metal patch 3 and the light source board 2, and the shape of the connecting medium 7 matches that of the metal patch 3. Specifically, the connection medium 7 allows the metal patch 3 and the light source board 2 to be arranged in parallel, while also making the installation and fixation of the metal patch 3 more stable. The connecting medium 7 is generally made of PCB or plastic material.

[0031] As another way to install the metal patch 3, such as Figure 4 As shown, a connecting support plate 9 for mounting a metal patch 3 is also provided at the end of the drive circuit board 4 near the light source board 2, and the connecting support plate 9 extends through the light source board 2, with the metal patch 3 fixed to the end of the connecting support plate 9. Specifically, the metal patch 3 can be parallel to the light source board 2 through the support of the connecting support plate 9, making the installation of the metal patch 3 more convenient.

[0032] Preferably, the connecting support plate 9 and the driving circuit board 4 are integrated into one structure, and the light source board 2 is also provided with clearance holes for avoiding the connecting support plate 9, which makes the installation of the connecting support plate 9 more convenient.

[0033] Based on the aforementioned feature connection support plate 9, such as Figure 4 As shown, the power supply structure 6 is a microstrip feed line 10 mounted on the connecting support plate 9. The microstrip feed line 10 is positioned close to the side of the connecting support plate 9. One end of the microstrip feed line 10 is connected to the metal patch 3, and the other end is connected to the RF module 5. Specifically, the microstrip feed line 10 is etched using the same method as the circuit board fabrication, based on the connecting support plate 9, or in other words, it has the same wiring configuration as the connection lines on the driver circuit board 4, which makes it easier to connect the metal patch 3 to the RF unit.

[0034] To make the installation of metal patch 3 more secure, such as Figure 4 As shown, a mounting hole for mounting the metal patch 3 is provided at the end of the connecting support plate 9, and a plug-in part that matches the mounting hole is provided on the side of the metal patch 3. The end of the microstrip feed line 10 is located inside the mounting hole. Specifically, when installing the metal patch 3, the plug-in part can be inserted into the mounting hole and made to contact and connect with the microstrip feed line 10.

[0035] Among some possible implementations, such as Figure 5 As shown, the power supply structure 6 is a conductive element 11 disposed between the RF component and the metal patch 3, and the conductive element 11 penetrates through the light source board 2. Specifically, the conductive element 11 can be a columnar conductor such as a PIN pin or an elastic sheet, or it can be a coaxial feed line with one end fixed on the driver circuit board 4. The PIN pin or conductive post is made of rigid material, and the coaxial feed line is a flexible wire.

[0036] Among some possible implementations, such as Figure 2 and Figure 3 As shown, the side of the driving circuit board 4 is also provided with an RF PCB board 14 parallel to the light source board 2. The feeding structure 6 is a feeding stub 12 coiled on the RF PCB board 14 near the light source board 2. The light source board 2 is also provided with a coupling via 13 penetrating the light source board 2. The coupling via 13 is located between the feeding stub 12 and the metal patch 3. The feeding stub 12 is connected to the metal patch 3 by coupling. The other end of the feeding stub 12 is directly connected to the RF module 5. The feeding stub 12 is also made by etching metal using existing circuit board manufacturing processes. In order to ensure the strength of the connection, the feeding stub 12 is bent or coiled on the RF PCB board 14, and the opening diameter of the coupling via 13 needs to project to cover part or all of the feeding stub 12. This connection method separates the microstrip patch (metal patch 3) and the feeding structure 6, which is beneficial for process assembly, and the size of the microstrip patch can be reduced by more than 20% compared with the direct feeding method. Furthermore, the light sources 8 on the light source board 2 can be arranged according to the shape of the metal patch 3, and evenly distributed around the metal patch 3.

[0037] As a preferred option, such as Figure 3 As shown, the RF components are also located on the side of the RF PCB board 14, and one end of the power supply branch 12 is electrically connected to the RF module 5. Specifically, the RF PCB board 14 is made of the same material as the driver circuit board 4. The RF module 5 is connected to the driver circuit board 4 through etched lines on the surface of the RF PCB board 14, which makes the entire RF component more integrated and makes the installation of the RF component more convenient.

[0038] Among some possible implementations, such as Figure 1 and Figure 2 As shown, the metal patch 3 is either ring-shaped or a regular polygon, with its center coinciding with the center of the light source board 2. Specifically, the ring can be circular or any other shape (e.g., a regular or I-shaped shape; generally, any centrally symmetrical shape is acceptable). Furthermore, the ring shape referred to here is formed by a strip of conductive material. The circumference of the formed ring must be greater than λg / 2, where λg is the equivalent wavelength related to the dielectric constant.

[0039] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A smart lamp, characterized in that, include: The main housing of the lamp has a hollow internal structure; A light source board is disposed inside the main housing of the lamp, including a metal layer and an insulating layer. Multiple light sources are disposed on the insulating layer, and connection lines for connecting the light sources are disposed on the insulating layer. A metal patch is located on the side of the insulating layer away from the metal layer. The metal patch and the metal layer interact to form a microstrip antenna, which is used to transmit or receive electrical signals. A drive circuit board is disposed inside the main housing of the lamp, located inside the light source board, for connecting external circuits, and one end of the drive circuit board is fixed to the inner side of the light source board. A radio frequency (RF) component includes an RF module and a power supply structure, wherein the power supply structure is used to electrically connect the RF module to the metal patch, and the RF module is disposed on the driver circuit board; The metal patch is a ring tube or a regular polygon, the center of the metal patch coincides with the center of the light source board, and the light source is arranged along the shape of the metal patch and evenly distributed around the metal patch. A connecting medium is also provided between the metal patch and the light source board. The shape of the connecting medium matches that of the metal patch. The connecting medium is made of air or insulating material. The minimum thickness of the connecting medium is h, where h is less than λ / 10, and λ is the wavelength of the radio frequency signal in free space.

2. The smart lamp as described in claim 1, characterized in that, The drive circuit board is provided with a connecting support plate for mounting the metal patch at the end near the light source board, and the connecting support plate is disposed through the light source board, and the metal patch is fixed at the end of the connecting support plate.

3. The intelligent lamp as described in claim 2, characterized in that, The power supply structure is a microstrip feed line disposed on the connecting support plate. The microstrip feed line is disposed close to the side of the connecting support plate. One end of the microstrip feed line is connected to a metal patch, and the other end of the microstrip feed line is connected to an RF module.

4. The smart lamp as described in claim 3, characterized in that, The end of the connecting support plate is also provided with a mounting hole for mounting the metal patch, and the side of the metal patch is also provided with a plug-in portion that is adapted to the mounting hole. The end of the microstrip feeder is located inside the mounting hole.

5. The intelligent lamp as described in claim 1 or 2, characterized in that, The power supply structure is a conductive component disposed between the radio frequency component and the metal patch, and the conductive component is disposed through the light source board.

6. The smart lamp as described in claim 1 or 2, characterized in that, The side of the driving circuit board is also provided with an RF PCB board parallel to the light source board. The power supply structure is a power supply branch coiled on the RF PCB board near the light source board. The light source board is also provided with a coupling via that penetrates the light source board. The coupling via is located between the power supply branch and the metal patch.

7. The intelligent lamp as described in claim 6, characterized in that, The radio frequency component is also disposed on the side of the radio frequency PCB board, and one end of the power supply branch is electrically connected to the radio frequency component.

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