Lighting device assembly
The lighting device assembly uses magnets with opposite magnetization directions and magnetic attraction sections to ensure secure attachment and prevent unintended detachment from mounting portions.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- TOSHIBA LIGHTING & TECHNOLOGY CORP
- Filing Date
- 2022-12-27
- Publication Date
- 2026-07-22
AI Technical Summary
Existing lighting devices struggle with easy attachment to mounting portions and often unintentionally fall off due to lack of secure fixation.
A lighting device assembly utilizing magnets with opposite magnetization directions and magnetic attraction sections, along with a yoke to concentrate magnetic flux, ensuring secure attachment and preventing unintended detachment.
Facilitates easy installation and secure attachment of lighting devices to mounting sections, preventing accidental dislodging.
Smart Images
Figure 0007893140000001 
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Abstract
Description
Technical Field
[0001] Embodiments of the present invention relate to a lighting device assembly.
Background Art
[0002] For example, when fixing a lighting device to a ceiling or the like, various forms are known, such as those using spring biasing force or those using the attracting force of a magnet.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Patent Document 2
Summary of the Invention
Problems to be Solved by the Invention
[0004] The problem to be solved by the present invention is to provide a lighting device assembly that can easily attach a lighting device to a lighting device mounting portion and can suppress the lighting device attached to the lighting device mounting portion from unintentionally falling off the lighting device mounting portion.
Means for Solving the Problems
[0005] According to the embodiment, the lighting device assembly includes a lighting device and a lighting device mounting section. The lighting device includes a main body and a light source section provided on the main body that emits light when power is supplied from a power source. The lighting device is mounted on the lighting device mounting section. The lighting device assembly includes a first magnet, a second magnet, a first magnetic attraction section made of magnetic material, and a second magnetic attraction section made of magnetic material. The first magnet is provided on either the main body or the lighting device mounting section. The second magnet is provided on either the main body or the lighting device mounting section and is spaced apart from the first magnet. The first magnetic attraction section is provided on the lighting device mounting section when the first magnet is provided on the main body, and is provided on the main body when the first magnet is provided on the lighting device mounting section, and is attracted to the first magnet. The second magnetic attraction section is provided on the lighting device mounting section when the second magnet is provided on the main body, and is provided on the main body when the second magnet is provided on the lighting device mounting section, and is attracted to the second magnet. The magnetization direction of the first magnet is different from that of the second magnet. When the lighting device is attached to the lighting device mounting section, a magnetic material is provided between the first magnet and the second magnet. [Effects of the Invention]
[0006] According to the present invention, a lighting device assembly is provided that allows the lighting device to be easily attached to a lighting device mounting section, and that prevents the lighting device attached to the lighting device mounting section from unintentionally falling off the lighting device mounting section. [Brief explanation of the drawing]
[0007] [Figure 1] A schematic diagram showing the lighting device and lighting device mounting portion of a lighting device assembly according to the first embodiment. [Figure 2] A schematic diagram showing the lighting device attached to the lighting device mounting section in Figure 1. [Figure 3] A schematic diagram showing the lighting device in Figures 1 and 2 viewed from below. [Figure 4] Examples of magnets found in lighting devices shown in Figures 1 to 3. [Figure 5] Another example of a magnet found in the lighting device shown in Figures 1 to 3. [Figure 6]A schematic diagram showing the relationship between the attractive force of the first magnet and the first magnetic attachment point when the lighting device is attached to the lighting device mounting point shown in Figure 1. [Figure 7] A schematic diagram showing the relationship between the attractive force of the second magnet and the second magnetic attachment point when the lighting device is attached to the lighting device mounting point in Figure 1. [Figure 8] A modified version of the schematic diagram showing the lighting device in Figures 1 and 2 viewed from below. [Figure 9] A schematic diagram showing the lighting device and lighting device mounting portion of a lighting device assembly according to a first modification of the first embodiment. [Figure 10] A schematic diagram showing the lighting device and lighting device mounting portion of a lighting device assembly according to a second modified example of the first embodiment. [Figure 11] A schematic diagram showing the lighting device and lighting device mounting portion of a lighting device assembly according to a third modified example of the first embodiment. [Figure 12] A schematic diagram showing the lighting device and lighting device mounting portion of a lighting device assembly according to a fourth modification of the first embodiment. [Figure 13] A schematic diagram showing the lighting device and lighting device mounting portion of a lighting device assembly according to the second embodiment. [Figure 14] A schematic diagram showing the lighting device attached to the lighting device mounting section in Figure 13. [Figure 15] A schematic diagram showing the lighting device and lighting device mounting portion of a lighting device assembly according to the third embodiment. [Figure 16] A schematic diagram showing the lighting device attached to the lighting device mounting section in Figure 15. [Figure 17] A schematic diagram showing the lighting device and lighting device mounting portion of a lighting device assembly according to the fourth embodiment. [Figure 18] A schematic diagram showing the lighting device attached to the lighting device mounting section in Figure 17. [Figure 19] A schematic diagram showing the lighting device in Figures 17 and 18 viewed from below. [Figure 20] Examples of magnets found in lighting devices shown in Figures 17 to 19. [Figure 21]Another example of the magnet included in the lighting device shown in FIGS. 17 to 19. [Figure 22] Schematic diagram showing the relationship between the adsorption force of the first magnet and the first magnet adsorption part when the lighting device is attached to the lighting device attachment part of FIG. 17. [Figure 23] Modified example of the schematic diagram showing the state of the lighting device in FIGS. 17 and 18 as viewed from below.
Mode for Carrying Out the Invention
[0008] The lighting device assembly (10) according to the present embodiment includes a lighting device (12) and a lighting device attachment part (14). The lighting device (12) has a main body (22) and a light source part (24) provided on the main body (22) and emitting light by the supply of power from a power source (18). The lighting device (12) is attached to the lighting device attachment part (14). The lighting device assembly (10) has a first magnet (32), a second magnet (34), a first magnet adsorption part (42) made of a magnetic material, and a second magnet adsorption part (44) made of a magnetic material. The first magnet (32) is provided on one of the main body (22) and the lighting device attachment part (14). The second magnet (34) is provided on one of the main body (22) and the lighting device attachment part (14) and is spaced apart from the first magnet (32). The first magnet adsorption part (42) is provided on the lighting device attachment part (14) when the first magnet (32) is provided on the main body (22), and is provided on the main body (22) when the first magnet (32) is provided on the lighting device attachment part (14), and adsorbs to the first magnet (32). The second magnet adsorption part (44) is provided on the lighting device attachment part (14) when the second magnet (34) is provided on the main body (22), and is provided on the main body (22) when the second magnet (34) is provided on the lighting device attachment part (14), and adsorbs to the second magnet (34). The magnetization direction of the first magnet (32) is different from the magnetization direction of the second magnet (34). The lighting device (12) is connected to the lighting device mounting portion (14) at at least two locations where they are separated from each other between the first magnet (32) and the first magnet attracting portion (42), and between the second magnet (34) and the second magnet attracting portion (44). Also, the magnetization directions of the first magnet (32) and the second magnet (34) are different. Therefore, even if the lighting device assembly 10 is affected by an external magnetic field, at least one of the gaps between the first magnet (32) and the first magnet attracting portion (42), and between the second magnet (34) and the second magnet attracting portion (44) can suppress the influence. Thus, the lighting device (12) can be easily attached to the lighting device mounting portion (14), and it is possible to provide a lighting device assembly (10) that can prevent the lighting device (12) attached to the lighting device mounting portion (14) from accidentally falling off the lighting device mounting portion (14).
[0009] The power supply (18) is provided on either the main body (22) or the lighting device mounting portion (14). When the power supply (18) is provided on the main body (22), electrical connection with the light source unit (24) can be easily achieved. When the power supply (18) is provided on the lighting device mounting portion (14), the lighting device (12) can be made lighter in weight. For example, by using wireless power supply or the like, power is appropriately supplied from the power supply (18) provided on the lighting device mounting portion (14) to the light source unit (24).
[0010] When the lighting device (12) is attached to the lighting device mounting portion (14), a magnetic body (18a) is provided between the first magnet (32) and the second magnet (34). Even if, in the absence of the magnetic material (18a), the magnetic fields of the first magnet (32) and the second magnet (34) affect the attractive force between the first magnet (32) and the first magnetic attachment part (42), and between the second magnet (34) and the second magnetic attachment part (44), by placing the magnetic material (18a), the magnetic material (18a) becomes a path for the magnetism. Therefore, by allowing the magnetism of the first magnet (32) to pass through the magnetic material (18a), the influence of the first magnet (32) on the second magnet (34) can be suppressed, and by allowing the magnetism of the second magnet (34) to pass through the magnetic material (18a), the influence of the second magnet (34) on the first magnet (32) can be suppressed. Thus, the presence of the magnetic material (18a) prevents a force from being applied that would cause the lighting device (12) to detach from the lighting device mounting part (14).
[0011] A yoke (35) is provided on each of the first magnet (32) and the second magnet (34). Therefore, the magnetic flux of the first magnet (32) and the second magnet (34) is concentrated in the yoke (35), making it difficult for the flux to escape into the atmosphere, and the attractive force between the first magnet (32) and the first magnetic attachment part (42), and between the second magnet (34) and the second magnetic attachment part (44), can be greatly improved compared to when the yoke (35) is not present. As a result, the sizes of the first magnet (32) and the second magnet (34) can be reduced.
[0012] The embodiments will be described below with reference to the drawings.
[0013] (First Embodiment) A lighting device assembly 10 according to the first embodiment will be described with reference to Figures 1 to 7.
[0014] Figures 1 and 2 are schematic diagrams showing a lighting device assembly 10 according to the first embodiment. Figure 1 shows a schematic diagram in which the lighting device 12 is separated from the first magnetic adsorption part 42 and the second magnetic adsorption part 44 made of a magnetic material (ferromagnetic material) provided on the ceiling surface 40a of the ceiling part 40 which serves as the lighting device mounting part 14. Figure 2 shows a schematic diagram in which the lighting device 12 is attached to the lighting device mounting part 14. Figure 3 is a view of the lighting device 12 from below (light source part 24 side).
[0015] As shown in Figures 1 to 3, the lighting device assembly 10 according to this embodiment includes a lighting device 12 and a lighting device mounting section 14 to which the lighting device 12 is attached. Here, we will mainly describe the mounting structure of the lighting device 12 to the lighting device mounting section 14.
[0016] The lighting device 12 comprises a main body 22 and a light source unit 24 provided on the main body 22, which emits light when power is supplied from the power supply 18.
[0017] The main body 22 is formed as a support for the light source unit 24. The outer casing (frame) of the main body 22 is made of an appropriate material, such as plastic or metal.
[0018] The main body 22 and the light source unit 24 are formed, for example, in a roughly cylindrical or rectangular parallelepiped shape. Here, the main body 22 and the light source unit 24 are assumed to be formed in a roughly rectangular parallelepiped shape that is elongated in one direction. Various types of light sources can be used for the light source unit 24. For example, an LED module with multiple LEDs arranged in it can be used as the light source for the light source unit 24, and the overall outer shape is formed in a roughly rectangular shape that is elongated in one direction.
[0019] In this embodiment, the lighting device 12 has a first magnet 32 and a second magnet 34. The first magnet 32 and the second magnet 34 are preferably permanent magnets, but they may also be electromagnets as long as power can be continuously supplied. For example, ferrite magnets or neodymium magnets can be used as permanent magnets. The first magnet 32 and the second magnet 34 are each provided in the main body 22 of the lighting device 12. The first magnet 32 and the second magnet 34 are spaced apart. In this embodiment, the first magnet 32 and the second magnet 34 are embedded in the main body 22. The space between the main body 22 and the first magnet 32, and the space between the main body 22 and the second magnet 34, is not limited to embedding; for example, it may be screwed in or bonded.
[0020] The south pole and north pole of the first magnet 32 and the second magnet 34 are adjacent in the vertical direction. In this embodiment, the upper side of the first magnet 32 is the south pole and the lower side is the north pole, and the upper side of the second magnet 34 is the north pole and the lower side is the south pole. Therefore, the magnetization direction of the first magnet 32 provided on the main body 22 is different from the magnetization direction of the second magnet 34, which is similarly provided on the main body 22.
[0021] Furthermore, it is preferable that the first magnet 32 and the second magnet 34 be of the same shape and size and exhibit similar attractive forces. The shapes of the first magnet 32 and the second magnet 34 can be any appropriate shape, such as the cylindrical shape with a countersunk hole shown in Figure 4 or the square shape with a countersunk hole shown in Figure 5. Although not shown, the first magnet 32 and the second magnet 34 can be of various shapes, such as triangular or ring-shaped. In this embodiment, the shapes of the first magnet 32 and the second magnet 34 are, for example, the cylindrical shape with a countersunk hole shown in Figure 4.
[0022] Furthermore, in this embodiment, the magnetization direction of the first magnet 32 and the second magnet 34 is in one direction along the thickness direction (height direction) of the first magnet 32 and the second magnet 34. The magnetization direction of the first magnet 32 (direction of the north and south poles) and the magnetization direction of the second magnet 34 (direction of the north and south poles) are opposite and different.
[0023] In this embodiment, as shown in Figure 6, it is preferable that a yoke 35, also known as a yoke, is provided on the outer circumference of the first magnet 32. The yoke 35 is made of a magnetic material with high magnetic permeability (ferromagnetic material), such as iron. The yoke 35 exposes the S pole plane of the first magnet 32 on the upper side, and covers the N pole side plane (the lower surface of the first magnet 32) and the annular outer surface of the first magnet 32.
[0024] As shown in Figure 7, it is preferable that a yoke 35, also known as a yoke, is provided on the outer circumference of the second magnet 34. The yoke 35 exposes the north pole plane of the second magnet 34 upwards, and covers the south pole plane (the lower surface of the second magnet 34) and the annular outer surface of the second magnet 34.
[0025] The lighting device mounting section 14 is attached, for example, to the ceiling or wall section 40 of an indoor wall. Here, we will explain assuming that the wall section 40 is the ceiling section.
[0026] The lighting device mounting section 14 has a first magnetic attachment section 42 made of a magnetic material that is attracted to the first magnet 32, and a second magnetic attachment section 44 made of a magnetic material that is attracted to the second magnet 34. The first magnetic attachment section 42 and the second magnetic attachment section 44 are formed from flat plates of a magnetic material (ferromagnetic material) with high magnetic permeability, such as iron. The outer shape of the first magnetic attachment section 42 and the second magnetic attachment section 44 can be various shapes, such as circular or rectangular. Here, it is assumed to be rectangular.
[0027] Although the area of the first magnetic attachment part 42 is made larger than the area in contact with the first magnet 32, the area of the first magnetic attachment part 42 may be approximately the same as the area in contact with the first magnet 32. Similarly, although the area of the second magnetic attachment part 44 is made larger than the area in contact with the second magnet 34, the area of the second magnetic attachment part 44 may be approximately the same as the area in contact with the second magnet 34.
[0028] In this embodiment, the power supply 18 is located above the ceiling portion 40, between it and the ceiling slab (not shown). Power is supplied to the power supply 18, for example, by wiring or wireless power supply (neither shown) provided between the ceiling portion 40 and the ceiling slab.
[0029] In this context, the power supply 18 preferably functions not only to supply power to the light source unit 24 but also as a controller for the light source unit 24. The power supply 18 may be one for one lighting device 12, or one for multiple lighting devices 12.
[0030] Power from the power supply 18 to the light source unit 24 may be supplied, for example, by wireless power transfer, or it may be supplied via wiring (not shown) connecting a connector (not shown) on the ceiling unit 40 and a connector (not shown) on the lighting device 12 when the lighting device 12 is attached to the lighting device mounting unit 14. When wireless power transfer is used, an appropriate method is used. For example, a receiving coil is provided in the main body 22 so as to face the transmitting coil of the power supply (AC power supply) 18, and power is supplied to the light source unit 24 via the receiving coil.
[0031] Next, the installation procedure for attaching the lighting device 12 of the lighting device assembly 10 according to this embodiment to the lighting device mounting section 14 will be described.
[0032] As shown in Figure 1, the first magnetic attachment part 42 and the second magnetic attachment part 44 are fixed to the ceiling surface (indoor side wall surface) 40a of the ceiling (wall) part 40 at a distance from each other using bolts and nuts (not shown). If necessary, the connector of the power supply 18 on the lighting device mounting part 14 side and the connector on the lighting device 12 side are connected by wiring.
[0033] Then, the worker positions the first magnetic attachment part 42 opposite the first magnet 32 and the second magnetic attachment part 44 opposite the second magnet 34. Then, as shown in Figure 2, the first magnet 32 is attracted to the first magnetic attachment part 42 and the second magnet 34 is attracted to the second magnetic attachment part 44.
[0034] When the first magnet 32 is attracted to the first magnetic attachment part 42, as shown in Figure 5, the yoke 35 becomes the north pole, and a magnetic circuit is formed consisting of the north pole of the first magnet 32 (yoke 35), the first magnetic attachment part 42, and the south pole of the first magnet 32, causing the magnetic flux to concentrate on the first magnetic attachment part 42. Similarly, when the second magnet 34 is attracted to the second magnetic attachment part 44, as shown in Figure 6, the yoke 35 becomes the south pole, and a magnetic circuit is formed consisting of the north pole of the first magnet 32, the first magnetic attachment part 42, and the south pole of the first magnet 32 (yoke 35), causing the magnetic flux to concentrate on the first magnetic attachment part 42.
[0035] In this way, by using the first magnet 32 with the yoke 35 and the second magnet 34 with the yoke 35, the magnetic flux of the magnetic circuit is concentrated at the location where attraction is required. Therefore, the lighting device 12 can be held attached to the lighting device mounting section 14 by the force of attraction.
[0036] Furthermore, the distance between the first magnet 32 and the second magnet 34 varies depending on the environment in which the lighting device 12 is placed and the characteristics of the magnets themselves, but is set to an appropriate distance. Therefore, the influence of the magnetic field of the second magnet 34 can be ignored for the first magnet 32. Similarly, the influence of the magnetic field of the first magnet 32 can be ignored for the second magnet 34. In addition, by using the yoke 35, the mutual influence between the magnetic fields of the first magnet 32 and the second magnet 34 can be suppressed compared to when the yoke 35 is not used.
[0037] Preferably, the magnetic force between the first magnet 32 and the first magnetic attachment part 42 is sufficient to reliably prevent the lighting device 12 from falling off. Similarly, preferably, the magnetic force between the second magnet 34 and the second magnetic attachment part 44 is sufficient to reliably prevent the lighting device 12 from falling off. In this case, the magnetization direction of the first magnet 32 and the magnetization direction of the second magnet 34 are different. Therefore, for example, even if the magnetic flux of the magnetic circuit is weakened due to the influence of an external magnetic field different from that between the first magnet 32 and the first magnetic attachment part 42, and between the second magnet 34 and the second magnetic attachment part 44, the different magnetization directions suppress the influence and prevent the lighting device 12 from falling off the lighting device mounting part 14. In other words, even if either the first magnet 32 and the first magnetic adsorption part 42 set, or the second magnet 34 and the second magnetic adsorption part 44 set, loses its adhesive force, the other set will prevent the lighting device 12 from falling off the lighting device mounting part 14.
[0038] Furthermore, after the lighting device 12 is attached to the lighting device mounting section 14, the set of the first magnet 32 and the first magnetic attraction section 42, and the set of the second magnet 34 and the second magnetic attraction section 44, each form separate magnetic circuits. Therefore, it is expected that the influence of the magnetic flux of the first magnet 32 and the second magnet 34 themselves will be weakened.
[0039] In this embodiment, an example was described in which the first magnetic attachment part 42 is attached to the first magnet 32 and the second magnetic attachment part 44 is attached to the second magnet 34. For example, the second magnetic attachment part 44 may be attached to the first magnet 32 and the first magnetic attachment part 42 may be attached to the second magnet 34.
[0040] Next, we will describe the removal procedure for removing the lighting device 12 of the lighting device assembly 10 according to this embodiment from the lighting device mounting section 14.
[0041] In this case, the lighting device 12 is pulled, for example, downward (towards the floor) against the attractive forces between the lighting device 12 and the lighting device mounting part 14, between the first magnet 32 and the first magnetic attachment part 42, and between the second magnet 34 and the second magnetic attachment part 44. Alternatively, the lighting device 12 is slid horizontally until the first magnet 32 is detached from the first magnetic attachment part 42, and further until the second magnet 34 is detached from the second magnetic attachment part 44. In this case, if the ceiling surface 40a of the ceiling part 40 is not a magnetic material, the lighting device 12 will fall off the ceiling part 40.
[0042] Therefore, the lighting device 12 according to this embodiment can be attached to and detached from the lighting device mounting portion 14 without using tools, for example.
[0043] In this embodiment, an example in which a yoke 35 is provided for each of the first magnet 32 and the second magnet 34 has been described. For example, if the first magnet 32 has an appropriate attractive force, and the attractive force between the first magnet 32 and the first magnetic attachment part 42 is sufficient to reliably prevent the lighting device 12 from falling off, then the yoke 35 is not necessarily required. Similarly, for example, if the second magnet 34 has an appropriate attractive force, and the attractive force between the second magnet 34 and the second magnetic attachment part 44 is sufficient to reliably prevent the lighting device 12 from falling off, then the yoke 35 is not necessarily required.
[0044] According to the lighting device assembly 10 of this embodiment, the lighting device 12 can be easily attached to the lighting device mounting portion 14, and the lighting device 12 attached to the lighting device mounting portion 14 can be prevented from unintentionally falling off the lighting device mounting portion 14.
[0045] In this embodiment, as shown in Figure 3, the light source unit 24, i.e., the lighting device 12, was described as being formed in a substantially rectangular shape that is elongated in one direction. As shown in Figure 8, the light source unit 24, i.e., the lighting device 12, is also preferably formed to be closer to a substantially square shape with respect to the sizes of the first magnet 32 and the second magnet 34, compared to the example shown in Figure 3. In this case, the lighting device 12 preferably has, for example, a third magnet 36 and a fourth magnet 38. In this case, the lighting device mounting portion 14 has a third magnet adsorption portion 46 and a fourth magnet adsorption portion 48. If the direction along which the first magnet 32 and the second magnet 34 move apart is defined as the longitudinal direction of the lighting device 12, then the third magnet 36 moves apart from the first magnet 32 in a direction perpendicular to the longitudinal direction, for example. Similarly, the fourth magnet 38 moves apart from the second magnet 34 in a direction perpendicular to the longitudinal direction, for example. The third magnet 36 and the fourth magnet 38 are spaced apart in a direction along the longitudinal direction. Also, when the first magnet 32 faces the first magnet adsorption portion 42 and the second magnet 34 faces the second magnet adsorption portion 44, the third magnet 36 faces the third magnet adsorption portion 46. Furthermore, in a state where the first magnet 32 faces the first magnetic adsorption part 42, the second magnet 34 faces the second magnetic adsorption part 44, and the third magnet 36 faces the third magnetic adsorption part 46, the fourth magnet 38 faces the fourth magnetic adsorption part 48.
[0046] The orientation of the third magnet 36 is the same as the orientation of the second magnet 34. The orientation of the fourth magnet 38 is the same as the orientation of the first magnet 32. Furthermore, the magnetization directions of magnets 32,34, magnets 34,38, magnets 38,36, and magnets 36,32 that are adjacent to each other in the circumferential direction with respect to the centroid of the lighting device 12 are opposite. For example, the magnetization direction between the first magnet 32 and the first magnet attachment part 42, and between the fourth magnet 38 and the fourth magnet attachment part 48 is the same. Also, for example, the magnetization direction between the second magnet 34 and the second magnet attachment part 44, and between the third magnet 36 and the third magnet attachment part 46 is the same. Therefore, even if the magnetic flux of the magnetic circuit weakens due to the influence of a magnetic field from outside the lighting device assembly 10, the influence is suppressed because the magnetization directions of the two sets are different from each other, preventing the lighting device 12 from falling off the lighting device mounting part 14. In other words, even if the set of the first magnet 32 and the first magnetic adsorption part 42 and the set of the fourth magnet 38 and the fourth magnetic adsorption part 48 lose their adsorption force, the adsorption force of the remaining two sets, the set of the second magnet 34 and the second magnetic adsorption part 44 and the set of the third magnet 36 and the third magnetic adsorption part 46, is maintained, thus preventing the lighting device 12 from unintentionally falling off the lighting device mounting part 14.
[0047] In the example shown in Figure 8, an example was described in which the first magnetic attachment part 42 is attached to the first magnet 32, the second magnetic attachment part 44 is attached to the second magnet 34, the third magnetic attachment part 46 is attached to the third magnet 36, and the fourth magnetic attachment part 48 is attached to the fourth magnet 38. For example, the second magnetic attachment part 44 may be attached to the first magnet 32, the fourth magnetic attachment part 48 may be attached to the second magnet 34, the first magnetic attachment part 42 may be attached to the third magnet 36, and the third magnetic attachment part 46 may be attached to the fourth magnet 38. In other words, even if the lighting device 12 is rotated 90° around a virtual axis that penetrates the centroid of the lighting device 12 in the vertical direction, the lighting device 12 can still be attached to the lighting device mounting part 14. For this reason, the lighting device 12 can be attached to the lighting device mounting part 14 in an appropriate orientation.
[0048] Hereinafter, modified examples of the lighting device assembly 10 according to this embodiment will be described. In this example, the same reference numerals will be used as much as possible for components that are the same as or have the same function as those described in the first embodiment, and detailed explanations will be omitted.
[0049] (First variation) A first modified example of the lighting device assembly 10 will be explained with reference to Figure 9.
[0050] Figure 9 is a schematic diagram showing a lighting device assembly 10 according to a first modified example of the first embodiment. Figure 9 shows a schematic diagram in which the lighting device 12 is separated from a first magnetic adsorption part 42 and a second magnetic adsorption part 44 made of a magnetic material (ferromagnetic material) provided on the ceiling surface 40a of the ceiling part 40 which serves as the lighting device mounting part 14.
[0051] As shown in Figure 9, the power supply 18 may also be located in the lighting device 12 rather than in the ceiling space. The outer casing 18a of the power supply 18, for example, is made of a magnetic material with high magnetic permeability (ferromagnetic material), such as iron. In this case, the outer casing 18a of the power supply 18 is arranged as a magnetic shield between the first magnet 32 and the second magnet 34.
[0052] By placing the magnetic outer casing 18a between the first magnet 32 and the second magnet 34, the influence of the first magnet 32 on the second magnet 34 can be suppressed, and the influence of the second magnet 34 on the first magnet 32 can be suppressed.
[0053] Therefore, even if the distance between the first magnet 32 and the second magnet 34 is short, for example, by placing a magnetic material with high magnetic permeability (ferromagnetic material), such as iron, between the first magnet 32 and the second magnet 34, it is possible to prevent a force from being applied that would cause the lighting device 12 to detach from the lighting device mounting part 14.
[0054] According to the modified lighting device assembly 10, the lighting device 12 can be easily attached to the lighting device mounting portion 14, and the lighting device 12 attached to the lighting device mounting portion 14 can be prevented from unintentionally falling off the lighting device mounting portion 14.
[0055] (Second variation) A second modified example of the lighting device assembly 10 will be explained with reference to Figure 10.
[0056] Figure 10 is a schematic diagram showing a lighting device assembly 10 according to a second modified example of the first embodiment. Figure 10 shows a schematic diagram in which the lighting device 12 is separated from a magnetic adsorption part 45 made of a magnetic material (ferromagnetic material) provided on the ceiling surface 40a of the ceiling part 40 which serves as the lighting device mounting part 14.
[0057] Instead of attaching a first magnetic attachment part 42 and a second magnetic attachment part 44 to the ceiling surface 40a of the ceiling part 40, the lighting device mounting part 14 has a magnetic attachment part 45 made of a highly permeable magnetic material (ferromagnetic material) such as iron attached to it. The magnetic attachment part 45 is formed as a box in the shape of a roughly rectangular parallelepiped.
[0058] In this modified example, the first magnet 32 and the second magnet 34 of the lighting device 12 are located outside the main body 22, rather than inside the main body 22.
[0059] The lighting device 12 and the lighting device mounting portion 14 may also be formed in this manner.
[0060] According to the modified lighting device assembly 10, the lighting device 12 can be easily attached to the lighting device mounting portion 14, and the lighting device 12 attached to the lighting device mounting portion 14 can be prevented from unintentionally falling off the lighting device mounting portion 14.
[0061] (Third variation) A third modified example of the lighting device assembly 10 will be explained with reference to Figure 11.
[0062] Figure 11 is a schematic diagram showing a lighting device assembly 10 according to a third modified example of the first embodiment. Figure 10 shows a schematic diagram in which the lighting device 12 is separated from a magnetic attraction part 45 made of a magnetic material (ferromagnetic material) provided on the ceiling surface 40a of the ceiling part 40 which serves as the lighting device mounting part 14.
[0063] A power supply 18 is provided between the first magnet 32 and the second magnet 34. The outer casing 18a of the power supply 18 is made of a magnetic material with high magnetic permeability (ferromagnetic material), such as iron.
[0064] In this embodiment, the magnetization directions of the first magnet 32 and the second magnet 34 are opposite to each other, but the lighting device 12 having the first magnet 32 and the second magnet 34 further has an outer casing 18a made of magnetic material. By placing the magnetic outer casing 18a between the first magnet 32 and the second magnet 34, it is possible to suppress the influence of the first magnet 32 on the second magnet 34 and the influence of the second magnet 34 on the first magnet 32. Therefore, when attaching the lighting device 12 to the lighting device mounting section 14, or after attachment, it is possible to suppress the influence of the magnetization directions of the first magnet 32 and the second magnet 34 on each other.
[0065] Therefore, even if the distance between the first magnet 32 and the second magnet 34 is short, for example, by placing a magnetic material with high magnetic permeability (ferromagnetic material), such as iron, between the first magnet 32 and the second magnet 34, it is possible to prevent a force from being applied that would cause the lighting device 12 to detach from the lighting device mounting part 14.
[0066] On the other hand, even if the magnetic flux of the magnetic circuit weakens due to the influence of a magnetic field from outside the lighting device assembly 10, the influence is suppressed by the fact that the magnetization directions of the two sets are different from each other, and the lighting device 12 is prevented from falling off the lighting device mounting part 14. In other words, even if either the set of the first magnet 32 and the first magnetic attraction part 42, or the set of the second magnet 34 and the second magnetic attraction part 44, loses its attractive force, the other set will prevent the lighting device 12 from falling off the lighting device mounting part 14. In this way, it is preferable to place a power supply 18 having, for example, a ferromagnetic outer case 18a between the first magnet 32 and the second magnet 34.
[0067] According to the modified lighting device assembly 10, the lighting device 12 can be easily attached to the lighting device mounting portion 14, and the lighting device 12 attached to the lighting device mounting portion 14 can be prevented from unintentionally falling off the lighting device mounting portion 14.
[0068] (Fourth variation) A fourth modified example of the lighting device assembly 10 will be explained with reference to Figure 12.
[0069] Figure 12 is a schematic diagram showing a lighting device assembly 10 according to a fourth modified example of the first embodiment. Figure 12 shows a schematic diagram in which the lighting device 12 is separated from a magnetic adsorption part 45 made of a magnetic material (ferromagnetic material) provided on the ceiling surface 40a of the ceiling part 40 which serves as the lighting device mounting part 14.
[0070] A power supply 18 is provided in this lighting device mounting section 14.
[0071] In this modified example, the power supply 18 is placed on the magnetic adsorption part 45 on the lighting device mounting part 14 side, such as the ceiling part 40. This makes it possible to reduce the weight of the lighting device 12.
[0072] Furthermore, a magnetic material (ferromagnetic material) 18a is provided in the magnetic attraction section 45. This magnetic material 18a is placed between the first magnet 32 and the second magnet 34 when the lighting device 12 is attached to the lighting device mounting section 14. The magnetic material 18a may be formed in a block shape, a box shape like the outer casing of the power supply 18, or simply a flat plate. In Figure 12, the magnetic material 18a is shown as a flat plate extending in the depth direction of the paper. By placing the magnetic material 18a between the first magnet 32 and the second magnet 34 in this way, the influence of the first magnet 32 on the second magnet 34 can be suppressed, and the influence of the second magnet 34 on the first magnet 32 can be suppressed.
[0073] Therefore, even if the distance between the first magnet 32 and the second magnet 34 is short, for example, by placing a magnetic material (ferromagnetic material) 18a with high magnetic permeability, such as iron, between the first magnet 32 and the second magnet 34, it is possible to prevent a force from being applied that would cause the lighting device 12 to detach from the lighting device mounting part 14.
[0074] According to the modified lighting device assembly 10, the lighting device 12 can be easily attached to the lighting device mounting portion 14, and the lighting device 12 attached to the lighting device mounting portion 14 can be prevented from unintentionally falling off the lighting device mounting portion 14.
[0075] With respect to the lighting device 12 according to the first embodiment, including the variations described above, the following additional information can be obtained. [Note] A lighting device (12) attached to a lighting device mounting part (14) having magnetic adsorption parts (42, 44; 45), Main body (22) and; The main body (22) is provided with a light source unit (24) that emits light when power is supplied from a power source (18); The main body (22) is provided with a first magnet (32) and; A second magnet (34) is provided on the main body (22) and is spaced apart from the first magnet (32); It has, The magnetization direction of the first magnet (32) is different from the magnetization direction of the second magnet (34). The first magnet (32) and the second magnet (34) are attracted to the magnetic attraction parts (42, 44; 45). Lighting device (12).
[0076] (Second Embodiment) The lighting device assembly 10 according to this embodiment will be described with reference to Figures 13 and 14. This embodiment is a further modification of the first embodiment, including each of the modified examples, and the same reference numerals are used as much as possible for components that are the same as or have the same function as those described in the first embodiment, and detailed descriptions are omitted.
[0077] Figures 13 and 14 are schematic diagrams showing a lighting device assembly 10 according to the second embodiment. Figure 13 shows a schematic diagram in which a lighting device 12 having a first magnetic adsorption part 42 and a second magnetic adsorption part 44 is separated from a first magnet 32 and a second magnet 34 provided on the ceiling surface 40a of the ceiling part 40 which serves as a lighting device mounting part 14. Figure 14 shows a schematic diagram in which the lighting device 12 is attached to the lighting device mounting part 14.
[0078] As shown in Figures 13 and 14, the lighting device 12 of the lighting device assembly 10 according to this embodiment includes a main body 22, a light source unit 24 provided on the main body 22, a first magnetic attachment unit 42, and a second magnetic attachment unit 44. The first magnetic attachment unit 42 and the second magnetic attachment unit 44 are provided on the main body 22.
[0079] The lighting device mounting portion 14 of the lighting device assembly 10 has a first magnet 32 and a second magnet 34. The first magnet 32 and the second magnet 34 are provided on the ceiling surface 40a of the ceiling portion 40.
[0080] Thus, it is also preferable that the first magnet 32 and the second magnet 34 are provided on the lighting device mounting portion 14 side, and the first magnetic attraction portion 42 and the second magnetic attraction portion 44 are provided on the lighting device 12 side.
[0081] In this embodiment, the lighting device 12 can be made lighter by using a lightweight magnetic material (ferromagnetic material) for the first magnetic attachment part 42 and the second magnetic attachment part 44 of the lighting device 12, and by not placing heavy objects such as the power supply 18.
[0082] The procedures for attaching and removing the lighting device 12 from the lighting device mounting section 14 were described in the first embodiment, so they will not be described here.
[0083] According to the lighting device assembly 10 of this embodiment, the lighting device 12 can be easily attached to the lighting device mounting portion 14, and the lighting device 12 attached to the lighting device mounting portion 14 can be prevented from unintentionally falling off the lighting device mounting portion 14.
[0084] In this embodiment, the lighting device 12 has been described in an example having a first magnetic attachment portion 42 and a second magnetic attachment portion 44. For example, as shown in Figures 10 to 12, instead of arranging the first magnetic attachment portion 42 and the second magnetic attachment portion 44 as flat plates on the main body 22, one magnetic attachment portion 45 having the first magnetic attachment portion 42 and the second magnetic attachment portion 44 as a region may be arranged.
[0085] Furthermore, it is preferable that the first magnet 32 and the second magnet 34 are covered by the yoke 35, as shown in Figures 6 and 7.
[0086] With respect to the lighting device 12 according to the second embodiment described above, the following additional information can be obtained. [Note] A lighting device (12) attached to a lighting device mounting section (14) having a first magnet (32) and a second magnet (34) having a different magnetization direction from the first magnet (32), Main body (22) and; The main body (22) is provided with a light source unit (24) that emits light when power is supplied from a power source (18); The main body (22) is provided with magnetic adsorption parts (42, 44; 45) and; It has, The magnetic adsorption parts (42, 44; 45) are attracted to the first magnet (32) and the second magnet (34). Lighting device (12).
[0087] (Third embodiment) The lighting device assembly 10 according to this embodiment will be described with reference to Figures 15 and 16. This embodiment is a further modification of the first and second embodiments, including each of the modified versions. Components that are the same as or have the same function as those described in the first and second embodiments are given the same reference numerals as much as possible, and detailed descriptions are omitted.
[0088] Figures 15 and 16 are schematic diagrams showing a lighting device assembly 10 according to the third embodiment. Figure 13 shows a schematic diagram in which a lighting device 12 having a first magnet 32 and a second magnet suction part 44 is separated from the first magnet 32 and the second magnet 34 provided on the ceiling surface 40a of the ceiling part 40 which serves as the lighting device mounting part 14. Figure 16 shows a schematic diagram in which the lighting device 12 is attached to the lighting device mounting part 14.
[0089] As shown in Figures 15 and 16, the lighting device 12 of the lighting device assembly 10 according to this embodiment includes a main body 22, a light source unit 24 provided on the main body 22, a first magnetic attachment unit 42, and a second magnet 34. The first magnetic attachment unit 42 and the second magnet 34 are provided on the main body 22.
[0090] The lighting device mounting portion 14 of the lighting device assembly 10 has a first magnet 32 and a second magnetic attraction portion 44. The first magnet 32 and the second magnetic attraction portion 44 are provided on the ceiling surface 40a of the ceiling portion 40.
[0091] Thus, it is also preferable that the first magnet 32 and the second magnetic adsorption part 44 are provided on the lighting device mounting part 14 side, and the first magnetic adsorption part 42 and the second magnet 34 are provided on the lighting device 12 side.
[0092] The procedures for attaching and removing the lighting device 12 from the lighting device mounting section 14 were described in the first embodiment, so they will not be described here.
[0093] According to the lighting device assembly 10 of this embodiment, the lighting device 12 can be easily attached to the lighting device mounting portion 14, and the lighting device 12 attached to the lighting device mounting portion 14 can be prevented from unintentionally falling off the lighting device mounting portion 14.
[0094] With respect to the lighting device 12 according to the third embodiment described above, the following additional information can be obtained. [Note] A lighting device (12) that is attached to a lighting device mounting part (14) having a second magnetic adsorption part (44) and a second magnet (34), Main body (22) and; The main body (22) is provided with a light source unit (24) that emits light when power is supplied from a power source (18); One or more first magnets (32) are provided on the main body (22) and have a different magnetization direction from the second magnet (34); The first magnetic adsorption portion (42) provided on the main body (22) and; It has, When the first magnet (32) is attracted to the second magnetic attachment part (44), and the second magnet (34) is attracted to the second magnetic attachment part (44), the first magnet (32) and the second magnet (34) separate from each other. Lighting device (12).
[0095] Furthermore, according to the first to third embodiments described above, the lighting device assembly 10 is formed as follows. The first magnet 32 is provided on either the main body 22 or the lighting device mounting section 14. The second magnet 34 is provided on either the main body 22 or the lighting device mounting section 14 and is spaced apart from the first magnet 32. The first magnetic attraction section 42 is provided on the lighting device mounting section 14 when the first magnet 32 is provided on the main body 22, and is provided on the main body 22 when the first magnet 32 is provided on the lighting device mounting section 14, and is attracted to the first magnet 32. The second magnetic attraction section 44 is provided on the lighting device mounting section 14 when the second magnet 34 is provided on the main body 22, and is provided on the main body 22 when the second magnet 34 is provided on the lighting device mounting section 14, and is attracted to the second magnet 34.
[0096] (Fourth Embodiment) The lighting device assembly 10 according to this embodiment will be described with reference to Figures 17 to 23. This embodiment is a further modification of the first to third embodiments, which include each of the modified versions. Components that are the same as or have the same function as those described in the first to third embodiments are given the same reference numerals as much as possible, and detailed descriptions are omitted.
[0097] Figures 17 and 18 are schematic diagrams showing a lighting device assembly 10 according to the fourth embodiment. Figure 17 shows a schematic diagram in which the lighting device 12 is separated from the first magnetic attachment part 42 and the second magnetic attachment part 44 made of magnetic material, which are provided on the ceiling surface 40a of the ceiling part 40 which serves as the lighting device mounting part 14. Figure 18 shows a schematic diagram in which the lighting device 12 is attached to the lighting device mounting part 14. Figure 19 is a view of the lighting device 12 from below.
[0098] As shown in Figures 17 to 19, the lighting device assembly 10 according to this embodiment will be described in an example in which the lighting device 12 has a first magnet 32 and a second magnet 34, similar to the first embodiment. However, as described in the second embodiment, it is also preferable for the lighting device mounting portion 14 to have the first magnet 32 and the second magnet 34. Furthermore, as described in the third embodiment, it is also preferable to place at least one magnet on the lighting device 12 side and at least one magnet on the lighting device mounting portion 14 side.
[0099] In this embodiment, the magnetization direction of the first magnet 32 and the second magnet 34 is such that they are magnetized in one direction, for example, along the horizontal direction of the first magnet 32 and the second magnet 34. Furthermore, the magnetization direction of the first magnet 32 (direction of the north and south poles) and the magnetization direction of the second magnet 34 (direction of the north and south poles) are opposite and different.
[0100] Furthermore, it is preferable that the first magnet 32 and the second magnet 34 be of the same shape and size and exhibit similar attractive forces. The shapes of the first magnet 32 and the second magnet 34 can be any appropriate shape, such as the rectangular shape with a countersunk hole shown in Figure 20. Although not shown, the first magnet 32 and the second magnet 34 can be of various shapes, such as a disc shape in which half of the semicircle is the north pole and the other half is the south pole. In this embodiment, the shapes of the first magnet 32 and the second magnet 34 are, for example, the rectangular shape with a countersunk hole shown in Figure 20.
[0101] As shown in Figures 17 and 18, the south pole and north pole of the first magnet 32 and the second magnet 34 in this embodiment are adjacent to each other in the horizontal direction. In this embodiment, the north poles of the same pole, magnets 32 and 34, face each other in the horizontal direction. Therefore, the magnetization direction of the first magnet 32 is different from the magnetization direction of the second magnet 34.
[0102] In this embodiment, as shown in Figure 21, the first magnet 32 is preferably sandwiched between yokes 35a and 35b, which are called yokes. The yokes 35a and 35b are made of a magnetic material (ferromagnetic material) with high magnetic permeability, such as iron. The yoke 35a covers the entire surface of the S pole plane of the first magnet 32. The yoke 35b covers the entire surface of the N pole plane. The yokes 35a and 35b have mounting portions 35a1 and 35b1 for attachment to the main body 22 of the lighting device 12. Therefore, the first magnet 32 sandwiched between the yokes 35a and 35b is fixed to a desired position on the main body 22.
[0103] Although not shown in the diagram, it is preferable that the second magnet 34 is also sandwiched between yokes 35a and 35b, similar to the first magnet 32.
[0104] The procedures for attaching and removing the lighting device 12 from the lighting device mounting section 14 were described in the first embodiment, so the explanation here will be omitted as appropriate.
[0105] As shown in Figure 18, the first magnet 32 is attached to the first magnetic attachment part 42, and the second magnet 34 is attached to the second magnetic attachment part 44.
[0106] When the first magnet 32 is attracted to the first magnetic attachment part 42, as shown in Figure 22, the yoke 35a becomes the south pole and the yoke 35b becomes the north pole, forming a magnetic circuit consisting of the north pole of the first magnet 32 (yoke 35b), the first magnetic attachment part 42, and the south pole of the first magnet 32 (yoke 35a), and the magnetic flux is concentrated on the first magnetic attachment part 42. Therefore, the lighting device 12 can be held attached to the lighting device mounting part 14 by the attractive force of the first magnet 32.
[0107] When the second magnet 34, sandwiched between the yokes 35a and 35b, is attracted to the second magnetic attraction part 44, the only difference from when the first magnet 32 is attracted to the first magnetic attraction part 42 is that the north and south poles are reversed, and the lighting device 12 can be held attached to the lighting device mounting part 14 by the attractive force of the second magnet 34.
[0108] In this way, by using a first magnet 32 equipped with yokes 35a and 35b, and a second magnet 34 equipped with yokes 35a and 35b, the magnetic flux of the magnetic circuit is concentrated at the location where attraction is required.
[0109] Furthermore, the distance between the first magnet 32 and the second magnet 34 varies depending on the environment in which the lighting device 12 is placed and the characteristics of the magnets themselves, but is set to an appropriate distance. Therefore, the influence of the magnetic field of the second magnet 34 can be ignored for the first magnet 32. Similarly, the influence of the magnetic field of the first magnet 32 can be ignored for the second magnet 34. In addition, by using yokes 35a and 35b, the mutual influence between the magnetic fields of the first magnet 32 and the second magnet 34 can be suppressed compared to when yokes 35a and 35b are not used.
[0110] Preferably, the magnetic force between the first magnet 32 and the first magnetic attachment part 42 is sufficient to reliably prevent the lighting device 12 from falling off. Similarly, preferably, the magnetic force between the second magnet 34 and the second magnetic attachment part 44 is sufficient to reliably prevent the lighting device 12 from falling off. In this case, the magnetization direction of the first magnet 32 and the magnetization direction of the second magnet 34 are different. Therefore, for example, even if the magnetic flux of the magnetic circuit is weakened due to the influence of an external magnetic field different from that between the first magnet 32 and the first magnetic attachment part 42, and between the second magnet 34 and the second magnetic attachment part 44, the different magnetization directions suppress the influence and prevent the lighting device 12 from falling off the lighting device mounting part 14. In other words, even if either the first magnet 32 and the first magnetic adsorption part 42 set, or the second magnet 34 and the second magnetic adsorption part 44 set, loses its adhesive force, the other set will prevent the lighting device 12 from falling off the lighting device mounting part 14.
[0111] According to the lighting device assembly 10 of this embodiment, the lighting device 12 can be easily attached to the lighting device mounting portion 14, and the lighting device 12 attached to the lighting device mounting portion 14 can be prevented from unintentionally falling off the lighting device mounting portion 14.
[0112] As shown in Figures 17 and 18, another lighting device 12a is mounted adjacent to the lighting device 12 in the lighting device mounting section 14. For the sake of simplicity, this lighting device 12a is assumed to be the same product as the lighting device 12.
[0113] The first magnetic attraction part 42a of the lighting device mounting part 14 is attracted to the first magnet 32a of the lighting device 12a. At this time, the second magnet 34 of the lighting device 12 and the first magnet 32a of the lighting device 12a are adjacent to each other. Even in this case, the second magnet 34 of the lighting device 12 and the first magnet 32a of the lighting device 12a function in the same way as the relationship between the first magnet 32 and the second magnet 34 of the lighting device 12. That is, the second magnet 34 of the lighting device 12 and the first magnet 32a of the lighting device 12a can be separated by an appropriate distance, The first magnet 32a of the lighting device 12a can ignore the influence of the magnetic field of the second magnet 34 of the lighting device 12. Similarly, the second magnet 34 of the lighting device 12 can ignore the influence of the magnetic field of the first magnet 32a of the lighting device 12a. Therefore, the lighting device assembly 10 can appropriately attach multiple lighting devices 12, 12a, ... to the lighting device mounting section 14.
[0114] In this embodiment, as shown in Figure 19, the light source unit 24, i.e., the lighting device 12, was described as being formed in a substantially rectangular shape that is elongated in one direction. As shown in Figure 23, the light source unit 24, i.e., the lighting device 12, is also preferably formed to be closer to a square shape with respect to the sizes of the first magnet 32 and the second magnet 34, compared to the example shown in Figure 19. In this case, the lighting device 12 preferably has, for example, a third magnet 36 and a fourth magnet 38. In this case, the lighting device mounting portion 14 has a third magnet adsorption portion 46 and a fourth magnet adsorption portion 48. If the direction along which the first magnet 32 and the second magnet 34 move apart is defined as the longitudinal direction of the lighting device 12, then the third magnet 36 moves apart from the first magnet 32 in a direction perpendicular to the longitudinal direction, for example. Similarly, the fourth magnet 38 moves apart from the second magnet 34 in a direction perpendicular to the longitudinal direction, for example. The third magnet 36 and the fourth magnet 38 are spaced apart in a direction along the longitudinal direction.
[0115] Furthermore, when the first magnet 32 faces the first magnetic attachment part 42 and the second magnet 34 faces the second magnetic attachment part 44, the third magnet 36 faces the third magnetic attachment part 46. Also, when the first magnet 32 faces the first magnetic attachment part 42, the second magnet 34 faces the second magnetic attachment part 44, and the third magnet 36 faces the third magnetic attachment part 46, the fourth magnet 38 faces the fourth magnetic attachment part 48.
[0116] In Figure 23, the north pole of the first magnet 32 and the north pole of the fourth magnet 38 face each other across the centroid of the lighting device 12. Also, the south pole of the second magnet 34 and the south pole of the third magnet 36 face each other across the centroid of the lighting device 12.
[0117] Furthermore, the magnetization directions of the magnets 32, 34, 34, 34, 38, 38, 36, and 36, 32, which are adjacent to each other in the circumferential direction with respect to the centroid of the lighting device 12, are all different. For example, the magnetization directions between the first magnet 32 and the first magnetic attachment part 42, the second magnet 34 and the second magnetic attachment part 44, the third magnet 36 and the third magnetic attachment part 46, and the fourth magnet 38 and the fourth magnetic attachment part 48 are all different. Therefore, even if the magnetic flux of the magnetic circuit is weakened due to the influence of a magnetic field from outside the lighting device assembly 10, for example, the influence is suppressed because the magnetization directions of the four sets are different from each other, and the lighting device 12 is prevented from falling off the lighting device mounting part 14. In other words, for example, even if the first magnet 32 and the first magnetic attachment part 42 lose their attractive force, the attractive force of the remaining three sets—the second magnet 34 and the second magnetic attachment part 44, the third magnet 36 and the third magnetic attachment part 46, and the fourth magnet 38 and the fourth magnetic attachment part 48—is maintained, thereby preventing the lighting device 12 from unintentionally falling off the lighting device mounting part 14.
[0118] According to the lighting device assembly 10 of at least one embodiment described above, the lighting device 12 can be easily attached to the lighting device mounting portion 14, and the lighting device 12 attached to the lighting device mounting portion 14 can be prevented from unintentionally falling off the lighting device mounting portion 14.
[0119] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims of the invention and its equivalents. The claims of this application as they were at the time of filing are included below. [Note 1] A lighting device comprising a main body and a light source unit provided on the main body that emits light when power is supplied from a power source; The lighting device mounting section to which the aforementioned lighting device is attached; A first magnet is provided on either the main body or the lighting device mounting portion; A second magnet is provided on either the main body or the lighting device mounting portion, and is spaced apart from the first magnet; A first magnetic adsorption part made of a magnetic material is provided on the main body when the first magnet is provided on the main body when the first magnet is provided on the lighting device mounting part, and is adsorbed to the first magnet; A second magnetic adsorption portion made of a magnetic material is provided on the main body when the second magnet is provided on the main body when the second magnet is provided on the lighting device mounting portion, and is adsorbed to the second magnet; It has, The magnetization direction of the first magnet is different from the magnetization direction of the second magnet. Lighting device assembly. [Note 2] The power supply is provided in either the main body or the lighting device mounting portion, as described in Appendix 1 of the lighting device assembly. [Note 3] The lighting device assembly according to Appendix 1 or Appendix 2, wherein a magnetic material is provided between the first magnet and the second magnet when the lighting device is attached to the lighting device mounting portion. [Note 4] The lighting device assembly according to Appendix 1 or Appendix 2, wherein the first magnet and the second magnet are each provided with a yoke. [Explanation of symbols]
[0120] 10...Lighting device assembly, 12...Lighting device, 14...Lighting device mounting part, 18...Power supply, 18a...Outer case, 22...Main body, 24...Light source part, 32...First magnet, 34...Second magnet, 35...Yoke, 40...Ceiling part (wall part), 40a...Ceiling surface (indoor wall surface), 42...First magnet adsorption part, 44...Second magnet adsorption part, 45...Magnet adsorption part.
Claims
1. A lighting device comprising a main body and a light source unit provided on the main body that emits light when power is supplied from a power source; A lighting device mounting section to which the aforementioned lighting device is attached; A first magnet is provided on either the main body or the lighting device mounting portion; A second magnet is provided on either the main body or the lighting device mounting portion, and is spaced apart from the first magnet; A first magnetic adsorption portion made of a magnetic material is provided on the lighting device mounting portion when the first magnet is provided on the main body, and is provided on the main body when the first magnet is provided on the lighting device mounting portion, and is adsorbed to the first magnet; A second magnetic adsorption portion made of a magnetic material is provided on the main body when the second magnet is provided on the main body when the second magnet is provided on the lighting device mounting portion, and is provided on the main body when the second magnet is provided on the lighting device mounting portion, and is adsorbed to the second magnet; It has, The magnetization direction of the first magnet is different from the magnetization direction of the second magnet. When the lighting device is attached to the lighting device mounting section, a magnetic material is provided between the first magnet and the second magnet. Lighting device assembly.
2. The lighting device assembly according to claim 1, wherein the power supply is provided in either the main body or the lighting device mounting portion.
3. The lighting device assembly according to claim 1 or claim 2, wherein the first magnet and the second magnet are each provided with a yoke.