Downlight lighting system with wireless power transmission

Abstract

A wireless power transmission type downlight lighting system according to the present invention comprises: a recessed bracket installed in a ceiling; and a lighting body detachably coupled to the recessed bracket. The recessed bracket comprises: a recessed housing that accommodates the lighting body by forming a concave receiving space in the upward direction; a cover portion provided on the upper part of the recessed housing; a magnetic fixing frame portion provided on the inner side of the cover portion for fixing a magnet; and a transmitting coil provided within the recessed housing for transmitting power by electromagnetic induction. The lighting body may comprise: a central light source portion; a bezel portion around the light source portion; a second magnetic array portion attached in correspondence with a magnet provided on the magnetic fixing frame portion; and a receiving coil for receiving power transmitted from the transmitting coil.

Description

Technology Field

[0001] The present invention relates to a wireless power transmission type downlight lighting system. Background Technology

[0002] Downlights, which are installed embedded in the ceilings of indoor spaces, are widely used in various locations such as homes, commercial spaces, and offices due to their clean appearance and effective lighting functions. Most conventional downlights are designed with a wired system that connects directly to internal ceiling wiring; consequently, professional technical skills are required during installation, and there is a risk of damaging the ceiling structure during maintenance or replacement after installation.

[0003] Recently, downlights secured by sockets or clips have been developed to address these issues; however, they still require physical contact with electrical wiring, posing a risk of electric shock and potentially causing electrical safety problems due to poor contact. Additionally, there is the inconvenience of having to disconnect the power during replacement or maintenance of the lighting fixtures.

[0004] Meanwhile, while wireless power transmission technology is being applied in various fields such as mobile devices and small home appliances, effective application to ceiling lighting systems is uncommon. In particular, it is difficult to find systems that combine wireless power transmission with magnetic attachment capabilities in ceiling-mounted lighting, such as downlights.

[0005] Conventional downlights present problems such as increased product complexity and cost due to the difficulty of precise positioning during installation and the requirement of additional mechanical structures to control lighting direction. Furthermore, the fixtures are not easily detachable, leading to inconvenience during cleaning and maintenance.

[0006] Furthermore, existing downlight systems present a problem in that it is difficult to visually verify the installation or alignment status of the lights, and methods for diagnosing performance after installation are limited. As a result, it is difficult to prevent potential problems in advance or respond quickly to them. The problem to be solved

[0007] The present invention was devised to solve the problems of the conventional technology described above, and aims to provide a downlight lighting system that is easy to install and maintain by combining wireless power transmission technology with a detachable function using magnets.

[0008] In addition, the present invention aims to improve the accuracy and convenience of installation by providing a self-alignment function and a visual feedback means capable of inducing accurate positional alignment of the lighting body.

[0009] In addition, the present invention aims to enable the optimization of lighting effects by providing a structure that allows for fine adjustment of the directionality of the lighting after installation.

[0010] In addition, the present invention aims to improve maintenance efficiency by providing a system capable of remotely monitoring and diagnosing the installation status and performance of lighting using wireless communication technology.

[0011] In addition, the present invention aims to provide a circuit configuration that increases the stability and efficiency of power transmission and improves the light quality of lighting. means of solving the problem

[0012] A wireless power transmission type downlight lighting system according to the present invention comprises: a recessed bracket installed in a ceiling; and a lighting body detachably coupled to the recessed bracket. The recessed bracket comprises: a recessed housing that accommodates the lighting body by forming a concave receiving space in the upward direction; a cover portion provided on the upper part of the recessed housing; a magnetic fixing frame portion provided on the inner side of the cover portion for fixing a magnet; and a transmitting coil provided within the recessed housing for transmitting power by electromagnetic induction. The lighting body may comprise: a central light source portion; a bezel portion around the light source portion; a second magnetic array portion attached in correspondence with a magnet provided on the magnetic fixing frame portion; and a receiving coil for receiving power transmitted from the transmitting coil.

[0013] Additionally, the magnetic fixing frame includes a floating support frame formed in a ring shape; a first magnetic array in the shape of a disc located inside the floating support frame; and a floating suspension member connecting the first magnetic array member and the floating support frame, wherein the floating suspension member can enable the first magnetic array member to move or tilt slightly in horizontal and vertical directions.

[0014] In addition, a magnetic field-sensitive visualization film is attached to the upper surface within the concave space of the above-mentioned buried housing to visually indicate the position of the magnet fixed by the magnetic fixing frame.

[0015] In addition, the embedded bracket further includes a first Bluetooth module, and the lighting body further includes a second Bluetooth module, and the first Bluetooth module and the second Bluetooth module can communicate with each other to monitor the mounting status of the lighting body.

[0016] Additionally, the lighting body may further include a rectification and voltage regulation circuit that converts alternating current received from the receiving coil into direct current; an LED driving circuit that drives an LED with a direct current power supplied from the rectification and voltage regulation circuit; a temperature sensor that detects the temperature of the lighting body; and a flicker removal circuit that prevents the LED from flickering.

[0017] In addition, the lighting body may further include a battery in case the wireless power supply is interrupted. Effects of the invention

[0018] According to the wireless power transmission type downlight lighting system of the present invention, the lighting function can be performed stably without physical contact with electrical wiring, thereby significantly improving electrical safety.

[0019] In addition, the present invention simplifies the installation and maintenance process and enables accurate positional alignment through a magnetic attachment / detachment method and magnetic alignment function, thereby improving installation quality and user experience.

[0020] In addition, the floating suspension structure and the sliding or rotational permissible structure of the present invention allow for fine adjustment of the direction of the lighting even after attachment, thereby providing the advantage of achieving an optimal lighting effect.

[0021] In addition, the magnetic field-sensitive visualization film applied in this invention allows the position of the magnet within the lighting body to be visually confirmed during the installation process, thereby supporting intuitive and accurate installation.

[0022] The Bluetooth-based analysis function implemented in the present invention can remotely monitor and diagnose the status of the lighting after installation, thereby improving the efficiency and speed of maintenance.

[0023] In addition, the smart circuit embedded in the lighting body of the present invention provides functions such as overheat protection, power control, and flicker elimination, thereby improving electrical stability and light quality.

[0024] In addition, the present invention is expandable to brackets of various shapes and sizes, providing flexibility for application in diverse interior environments, and has the effect of improving productivity and economic efficiency through the standardization of parts. Brief explanation of the drawing

[0025] FIG. 1 is a schematic diagram showing a downlight according to one embodiment of the present invention. Figure 2 is a schematic diagram showing the separated view of the downlight of Figure 1. FIG. 3 is a bottom view showing the appearance of a buried bracket according to one embodiment. FIGS. 4 and FIGS. 5 are a bottom view and a top view, respectively, showing the appearance of a lighting body according to one embodiment. FIG. 6 is a schematic diagram showing the inner view of the upper cover of a buried bracket according to one embodiment. FIG. 7 is a plan view showing a magnetic fixed frame having a floating suspension structure. FIG. 8 is a block diagram showing a downlight structure according to one embodiment. FIG. 9 is a bottom view showing a recessed bracket of a position-adjustable downlight according to another embodiment. Figure 10 is a schematic diagram showing the appearance of the downlight of Figure 9. Figure 11 is a schematic diagram showing the inner view of the upper cover of the embedded bracket of Figure 9. FIG. 12 is a plan view showing the second floating suspension structure of FIG. 9. Specific details for implementing the invention

[0026] Embodiments of the present invention will be described below with reference to the attached drawings. Unless otherwise specifically defined or mentioned, terms indicating direction used in this description are based on the state shown in the drawings. Additionally, throughout each embodiment, the same reference numeral indicates the same component. Meanwhile, the thickness or dimensions of each component shown in the drawings may be exaggerated for convenience of explanation and do not imply that it must actually be constructed according to the corresponding dimensions or ratios between components.

[0028] With reference to FIGS. 1 to 7, the mechanical configuration of a downlight according to an embodiment of the present invention will be described. FIG. 1 is a schematic diagram showing a downlight according to an embodiment of the present invention, FIG. 2 is a schematic diagram showing the disassembled view of the downlight of FIG. 1, and FIG. 3 is a bottom view showing the appearance of a recessed bracket according to an embodiment. FIGS. 4 and FIG. 5 are a bottom view and a top view, respectively, showing the appearance of a lighting body according to an embodiment, FIG. 6 is a schematic diagram showing the inner view of the upper cover of a recessed bracket according to an embodiment, and FIG. 7 is a top view showing a magnetic fixing frame having a floating suspension structure.

[0029] Referring to FIGS. 1 and 2, the downlight according to the present invention is largely composed of two parts. One is a recessed bracket (100) that is embedded and fixed in the ceiling, and the other is a lighting body (200) that is detachably coupled to the bracket. Unlike traditional downlights, this configuration enables an innovative wireless power transmission system that can perform lighting functions without a wired connection.

[0030] The embedded bracket (100) is provided with an embedded housing (110), which is a concave space in the upward direction. The embedded housing (110) is mainly made of metal or heat-resistant plastic material and is embedded inside the ceiling to form a space that accommodates a lighting body. An embedded housing extension (111) is formed from the bottom to the outside of the embedded housing (110) and functions as a rim. The embedded housing extension (111) serves to finish the cut area of ​​the ceiling when the embedded bracket (110) is installed on the ceiling. This extension has a width of about 5mm to 15mm, neatly covering the cross-section of the ceiling material and enhancing the aesthetic finish.

[0031] A cover portion (120) is provided on the upper part of the buried housing (110). The cover portion (120) forms a certain space inside to cover the magnetic fixing frame portion (130), which will be described later, and other electrical components. The cover portion (120) is made of a material with excellent heat resistance and electrical insulation properties to protect the internal electrical components and prevent fire hazards. In addition, the cover portion (120) has dustproof and moistureproof functions to improve the lifespan and performance of the internal components.

[0032] As shown in FIG. 3, a magnetic array area (MZ1) is provided on the upper surface of the lighting body receiving portion (SP1) formed by the embedded housing (110). The magnetic array area (MZ1) is composed of a circular pattern, and a lighting body (200) is attached to the upper part of this area as an area where magnetic force acts by magnets arranged and fixed by a magnetic fixing frame portion (130). The magnetic array area (MZ1) is precisely designed so that the lighting body (200) can be attached and aligned exactly in the center.

[0033] The magnetic array area (MZ1) may also include a magnetic field-sensitive visualization film (119). This film is a special film whose color or pattern changes according to the strength and direction of the magnetic field, providing visual feedback when the installer aligns the second magnetic array section (240) of the lighting body (200) to the correct position. This makes the installation process intuitive, allowing even general users to easily install the lighting.

[0034] As shown in FIG. 6, a magnetic fixing frame portion (130) is provided on the inner side of the cover portion (120) of the embedded bracket (100). As shown in FIG. 7, the magnetic fixing frame portion (130) comprises a floating support frame (131) formed in a ring shape, a first magnetic array portion (132) in the shape of a disc located on the inner side of 131, and a floating suspension portion (133) connecting 132 and 131.

[0035] Referring to FIG. 7, the floating support frame (131) is made of high-rigidity metal or engineering plastic and serves as the outer frame of the entire magnetic structure. This frame is fixed to the cover portion (120) and provides space for the internal first magnetic array portion (132) to move finely.

[0036] The first magnetic array section (132) is in the shape of a disc, and a plurality of magnets are arranged in a specific pattern inside. These magnets are arranged with polarities corresponding to the second magnetic array section (240) of the lighting body (200) to form a strong attractive force. The magnets are not firmly fixed in a fixed position, but are designed to allow for fine movement by means of a floating suspension section (133).

[0037] The floating suspension section (133) is an elastic structure connecting the first magnetic array section (132) and the floating support frame (131), and is made of silicone rubber or a special spring material. This structure allows the first magnetic array section (132) to move or tilt slightly in the horizontal and vertical directions, helping the lighting body (200) to be naturally aligned in the correct position when attached. In addition, this floating structure acts as a cushion against external shocks or vibrations, thereby increasing the durability of the system.

[0038] As shown in FIG. 2, the lighting body (200) is received into the lighting body receiving portion (SP1) from the bottom of the embedded bracket (100) and is attached to the upper surface of the lighting body receiving portion (SP1) formed by the embedded housing (110). At this time, the lighting body (200) is stably attached to the bracket solely by magnetic attraction, without any mechanical connecting elements such as separate screws or clips.

[0039] As shown in FIG. 4, the lighting body (200) includes a central light source section (220) and a bezel section (210) around the light source section (220). The light source section (220) incorporates a high-efficiency LED module and provides a wide beam angle to produce a uniform lighting effect. The LED module can be selected from a color temperature range of 2700K to 6500K and uses a high-quality light source with a color rendering index (CRI) of 90 or higher. The bezel section (210) is made of aluminum, stainless steel, or high-grade plastic material to enhance aesthetic completeness and simultaneously assist in heat dissipation.

[0040] As illustrated in FIG. 5, the lighting body (200) further includes a body housing (230) and a second magnetic array (240). The body housing (230) fixes light-emitting elements such as LEDs within the light source unit (220) and accommodates and fixes other electrical components. The body housing (230) is made of an aluminum alloy with excellent heat dissipation properties to efficiently dissipate heat from the LEDs, thereby improving lifespan and performance.

[0041] Inside the second magnetic array section (240), magnets having polarity and arrangement are arranged and fixed in correspondence with the magnets arranged and fixed by the magnetic fixing frame section (130) described above. These magnets use rare earth magnets such as neodymium to provide strong magnetic force, and are designed so that the N pole and S pole are arranged alternately to enable accurate positional alignment.

[0042] Referring to FIG. 8, the interior of the embedded bracket (100) contains electrical components for wireless power transmission. The main components include a power converter (150) that receives AC power and converts it into a suitable form, and a transmitting coil (Tx) (160) that transmits power wirelessly.

[0043] The power conversion unit (150) receives commercial AC power of 220V or 110V and converts it into a high-frequency AC signal. In this process, it generates a stable and efficient power signal through steps such as rectification, filtering, voltage regulation, and high-frequency conversion. The power conversion unit (150) is equipped with overvoltage, overcurrent, and overheating prevention functions to ensure the safety of the system.

[0044] The transmitting coil (Tx) (160) receives a high-frequency alternating current signal generated by the power converter (150) and forms an electromagnetic field. This coil is made of high-purity copper wire and is wound in a specific pattern (e.g., spiral, sørensoidal) to enable efficient electromagnetic field formation. The transmitting coil (Tx) (160) is positioned near the magnetic array area (MZ1) to maintain an optimal distance and alignment with the receiving coil (Rx) (260) of the lighting body (200).

[0045] A receiving coil (Rx) (260) for receiving wireless power is built into the interior of the lighting body (200). This coil receives power based on the principle that an induced current is generated by the electromagnetic field generated by the transmitting coil (Tx) (160). The received power is converted into a DC power suitable for driving an LED through a rectification and voltage regulation circuit (270).

[0046] The rectification and voltage regulation circuit (270) converts the alternating current generated in the receiving coil (Rx) (260) into direct current and stabilizes the voltage to supply a constant voltage to the LED driving circuit (280). This circuit includes a regulator function that ensures the output voltage remains constant even with fluctuations in the input current.

[0047] The LED driving circuit (280) drives the LED using power supplied from the rectification and voltage regulation circuit (270). This circuit drives the LED in a constant current manner so that the brightness is maintained at a constant level, and can optionally support a dimming function.

[0048] The wireless power transmission system of the present invention is based on the principle of electromagnetic induction. This principle utilizes the phenomenon, according to Faraday's law of electromagnetic induction, where a voltage is induced in an adjacent coil (receiving coil) when the current flowing through one coil (transmitting coil) changes.

[0049] When a high-frequency alternating current flows through the transmitting coil (Tx) (160) of the embedded bracket (100), a changing magnetic field is formed around the coil. This magnetic field passes through the receiving coil (Rx) (260) of the lighting body (200) and generates an induced current. This induced current is converted into direct current through a rectification and voltage regulation circuit (270) and used to drive an LED.

[0050] To maximize power transmission efficiency, the present invention applies the following technical elements.

[0051] (1) Coil optimization: The shape, size, number of turns, etc. of the transmitting coil (Tx) (160) and the receiving coil (Rx) (260) were optimized to increase the electromagnetic induction efficiency.

[0052] (2) Matching resonant frequencies: Energy transfer efficiency is maximized by matching the resonant frequencies of the transmitting and receiving coils. Generally, frequencies in the range of 100 kHz to 200 kHz are used.

[0053] (3) Magnetic alignment structure: The transmitting coil and the receiving coil are aligned precisely through the magnetic array to prevent a decrease in power transmission efficiency.

[0054] (4) Magnetic field shielding: A shield made of ferrite material is placed around the transmitting and receiving coils to prevent the magnetic field from being unnecessarily dispersed and to prevent electromagnetic waves from interfering with surrounding electronic devices.

[0056] Through these technical elements, power in the range of approximately 5W to 15W can be transmitted with an efficiency of over 80%. This is sufficient power for the operation of a typical downlight LED.

[0057] The interior of the lighting body (200) includes additional components for various safety and convenience functions.

[0058] The temperature sensor (290) monitors the temperature of the LED and circuit in real time to provide an overheating prevention function. If the temperature rises above a set temperature (e.g., 85°C), it automatically adjusts the brightness or cuts off the power to protect the system.

[0059] The flicker removal circuit (297) prevents the flickering of the LED, thereby reducing eye strain for the user and providing a pleasant lighting environment. This circuit minimizes flicker by maintaining a constant current supplied to the LED even with fluctuations in input voltage.

[0060] Optionally, a battery (not shown) can be built in to maintain the lighting function even if the wireless power supply is temporarily interrupted. This ensures that the light does not turn off during power outages or temporary power fluctuations.

[0062] Meanwhile, the downlight system of the present invention provides smart control and monitoring functions through wireless communication functions.

[0063] A first Bluetooth module (145) is built into the embedded bracket (100), and a second Bluetooth module (245) is built into the lighting body (200). These Bluetooth modules use low-power Bluetooth (BLE) technology to increase energy efficiency.

[0064] The status of the lighting can be monitored and controlled by connecting to external devices, such as smartphones or tablets, via a Bluetooth module. Through a dedicated application, information such as the lighting's mounting status, power transmission efficiency, temperature, and power consumption can be checked in real time, and control functions like brightness adjustment and timer settings can also be utilized as needed.

[0065] In particular, the mounting status analysis function checks whether the lighting body (200) is correctly mounted on the embedded bracket (100) and provides feedback to the user. Since an incorrect mounting status can cause problems such as reduced power transmission efficiency or overheating, this function plays an important role in ensuring the safety and efficiency of the system.

[0067] One of the key technical features of the present invention is a self-alignment induction function. This function helps the lighting body (200) to be automatically aligned to the correct position when attached to the embedded bracket (100).

[0068] The first magnetic array (132) and the second magnetic array (240) are designed with corresponding polarities and arrangements. These magnetic arrays use strong permanent magnets, such as neodymium, to provide sufficient attractive force, and the N and S poles are arranged alternately so that they attach only in a specific direction. This prevents the lighting body (200) from being attached in the wrong direction and ensures that the electrical connection is made correctly.

[0069] The floating suspension section (133) supports the first magnetic array section (132) to move or tilt slightly. This floating structure induces the lighting body (200) to naturally move to the correct position by the attractive force between the magnets, even if it is placed in a slightly off position. This allows the user to easily install the lighting without precise manipulation.

[0070] The magnetic field-sensitive visualization film (119) is a special film that displays a specific pattern or color change depending on the strength and direction of the magnetic field. This film is attached to the upper surface of the lighting body receiving portion (SP1) to provide visual feedback when the second magnetic array portion (240) approaches. Through this visual change, the user can align the lighting body (200) to the correct position.

[0072] An important feature of this embodiment is that the position or direction can be adjusted even after the lighting body (200) is attached. In the case of a circular downlight (Fig. 1-7), the lighting body (200) can rotate within a certain range through the elastic structure of the floating suspension part (133). This allows the direction of the lighting to be finely adjusted so that light can be concentrated in a desired area.

[0074] The installation of the embedded bracket (100) proceeds to the next step.

[0075] A hole of appropriate size is made in the ceiling. For the circular bracket (100), a circular hole with a diameter of approximately 75 mm to 150 mm is made. The embedded housing (110) is inserted into the ceiling hole and positioned so that the housing extension (111) is in close contact with the ceiling surface. Next, the bracket is firmly fixed to the ceiling using a fixing device (not shown separately) for fixing the embedded housing (110) to the ceiling.

[0076] Afterward, the power input line is connected to the power input of the embedded bracket (100). At this time, the work must be performed with the power turned off, and the connection must be made correctly in accordance with electrical safety regulations. The cover part (120) is attached to the embedded housing (110) to protect the internal components.

[0078] The installation of the lighting body (200) proceeds as follows while the recessed bracket (100) is fixed to the ceiling. The lighting body (200) is brought toward the lighting body receiving portion (SP1) of the recessed bracket (100). The lighting body (200) is aligned to an appropriate position while checking the color change or pattern of the magnetic field-sensitive visualization film (119). The lighting body (200) is automatically attached to the correct position by the magnetic force between the second magnetic array portion (240) and the first magnetic array portion (132). If necessary, the position or direction of the lighting body (200) is finely adjusted. In the case of the circular bracket (100), adjustment in the rotational direction is possible.

[0079] The detachment of the lighting body (200) proceeds as follows. Hold the outer side of the bezel portion (210) of the lighting body (200) with your hand and apply a constant force downward. When a force sufficient to overcome the magnetic force between the first magnetic array portion (132) and the second magnetic array portion (240) is applied, the lighting body (200) is separated from the embedded bracket (100). Carefully lower the separated lighting body (200).

[0081] A downlight according to another embodiment will be described with reference to FIGS. 9 to 12. FIG. 9 is a bottom view showing a recessed bracket of a position-adjustable downlight according to another embodiment, and FIG. 10 is a schematic diagram showing the appearance of the downlight of FIG. 9. FIG. 11 is a schematic diagram showing the inner view of the upper cover of the recessed bracket of FIG. 9, and FIG. 12 is a plan view showing the second floating suspension structure of FIG. 9.

[0082] Compared to the recessed bracket (100) formed in a circular shape in the embodiment of FIG. 1, the downlight according to the present embodiment differs in that the recessed bracket (100a) is formed to have a constant length in the transverse direction. This structure having a constant length is suitable for cases where linear lighting arrangement is required in spaces such as long corridors or kitchens.

[0083] The embedded housing (110a) is formed to have a certain length, and a lighting body receiving portion (SP2), which is a space that is downwardly open on the inside, is formed. A housing extension portion (111a) is formed around the embedded housing (110a). At this time, a magnetic field-sensitive visualization film (119) is attached to the lower surface of the embedded housing (110a), that is, the upper surface of the lighting body receiving portion (SP2), to indicate the position of the magnet. As previously described, this film is a special film that reacts to a magnetic field to show a change in color or pattern, and intuitively helps with the position alignment of the lighting body (200).

[0084] As illustrated in FIG. 10, the lighting body (200) according to the present embodiment can move horizontally while being received and attached to the embedded housing (110a) of the embedded bracket (100a). This sliding function allows for fine adjustment of the position of the lighting, thereby optimizing the directionality of the lighting according to the user's needs.

[0085] Referring to FIG. 11, the inner side of the cover portion (120a) is provided with a roller portion (121), a belt portion (1211), and a magnetic fixing frame portion (130a). The roller portion (121) is provided as a pair spaced apart at a certain distance, and the belt portion (1211) is provided as a conveyor belt type along the roller portion (121). At this time, the magnetic fixing frame portion (130a) is fixed to the lower part of the belt portion (1211) and is provided to be able to reciprocate between the roller portions (121).

[0086] The roller section (121) is a rotatable cylindrical part made of high-strength plastic or metal material and supports the belt section (1211) so that it can move smoothly. Both ends of the roller section (121) are provided with flanges to prevent the belt from coming off.

[0087] The belt portion (1211) is made of a durable rubber or synthetic material and has a surface treatment to maintain appropriate friction. The belt portion (1211) is supported by the roller portion (121) and serves to move the magnetic fixing frame portion (130a).

[0088] Referring to FIG. 12, the magnetic fixed frame portion (130a) comprises a floating support frame (131a), a floating suspension portion (133a), and a first magnetic array portion (132a). The floating support frame (131a) is formed in the shape of a hollow square ring. As previously described, the first magnetic array portion (132a) is equipped with magnets having an arrangement and polarity corresponding to the second magnetic array portion (240) and is attached to the second magnetic array portion (240). The floating suspension portion (133a) is provided between the floating support frame (131a) and the first magnetic array portion (132a).

[0089] The floating support frame (131a) is designed in a rectangular shape to be suitable for the structure of a downlight having a certain length. This frame is fixed to the belt section (1211) and moves along the roller section (121).

[0090] The first magnetic array section (132a) has magnets arranged in various patterns and is designed to correspond exactly to the second magnetic array section (240) of the lighting body (200). The magnets use high-performance permanent magnets such as neodymium to provide strong magnetic force.

[0091] The floating suspension section (133a) is made of an elastic material, similar to the embodiment of the circular downlight, and supports the first magnetic array section (132a) to move or tilt slightly. This structure helps the lighting body (200) to automatically align in the correct position and acts as a buffer against external shocks or vibrations.

[0092] The electrical configuration and operating principle of a downlight of a fixed length are basically the same as those of a circular downlight embodiment. The wireless power transmission system, smart circuit, safety functions, and wireless communication functions all operate in the same manner. However, due to differences in form and movement mechanism, the arrangement and shape of the transmitting coil (Tx) and the receiving coil (Rx) are optimized to correspond to each other.

[0093] In particular, a downlight having a certain length is designed so that the lighting body (200) can move in a horizontal direction, which has the advantage of allowing the user to accurately position the light at a desired location. This horizontal movement function can be particularly useful for illuminating specific objects such as workbenches, shelves, and artworks.

[0094] Downlights of various sizes and shapes can be implemented while maintaining the basic principles of the present invention. In addition to the circular and rectangular shapes described above, variations in various forms such as squares and ovals are possible.

[0095] The size of the light source (220) can be manufactured in various sizes from 50mm to 200mm in diameter, and the color temperature can also be provided in various options from 2700K (warm white) to 6500K (cool white).

[0097] Although preferred embodiments of the present invention have been described above, the technical concept of the present invention is not limited to the preferred embodiments described above and can be implemented in various ways within the scope that does not depart from the technical concept of the present invention as embodied in the claims. Explanation of the symbols

[0098] 100, 100a: Recessed bracket 110, 110a: Recessed housing 111, 111a: Housing extension 120: Cover part 121: Roller section 1211: Belt section 130, 130a: Magnetic fixing frame part 131, 131a: Floating support frame 132, 132a: First magnetic array section 133, 133a: Floating suspension section 200: Lighting body 210: Bezel 220: Light source 230: Main body housing 240: Second magnetic array section SP1, SP2: Lighting body receiving section MZ1, MZ1a: Magnetic array area

Claims

Claim 1 A wireless power transmission type downlight lighting system comprising: a recessed bracket installed in a ceiling; and a lighting body detachably coupled to the recessed bracket; wherein the recessed bracket comprises: a recessed housing that accommodates the lighting body by forming a concave receiving space in the upward direction; a cover portion provided on the upper part of the recessed housing; a magnetic fixing frame portion provided on the inner side of the cover portion for fixing a magnet; and a transmitting coil provided within the recessed housing for transmitting power by electromagnetic induction; and wherein the lighting body comprises: a central light source portion; a bezel portion around the light source portion; a second magnetic array portion attached in correspondence with a magnet provided on the magnetic fixing frame portion; and a receiving coil for receiving power transmitted from the transmitting coil; and wherein a magnetic field-sensitive visualization film is attached to the upper surface within the concave space of the recessed housing to visually indicate the position of the magnet fixed by the magnetic fixing frame portion. Claim 2 In claim 1, the magnetic fixing frame part comprises: a floating support frame formed in a ring shape; a first magnetic array part in the shape of a disc located inside the floating support frame; and a floating suspension part connecting the first magnetic array part and the floating support frame; wherein the floating suspension part enables the first magnetic array part to move or tilt slightly in horizontal and vertical directions, thereby forming a wireless power transmission type downlight lighting system. Claim 3 delete Claim 4 delete Claim 5 A wireless power transmission type downlight lighting system according to claim 1, wherein the lighting body further comprises: a rectification and voltage regulation circuit that converts alternating current received from the receiving coil into direct current; an LED driving circuit that drives an LED with a direct current power supplied from the rectification and voltage regulation circuit; a temperature sensor that detects the temperature of the lighting body; and a flicker removal circuit that prevents flickering of the LED. Claim 6 A wireless power transmission type downlight lighting system according to claim 1, characterized in that the lighting body further includes a battery in case the wireless power supply is interrupted.

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