Lighting device and positioning device

Abstract

This invention provides a lighting device with a variable-position light-emitting element that allows for easy adjustment of the light-emitting element's position after installation, making it usable even in strong magnetic field environments such as MRI rooms. [Solution] The movable part 40 of the lighting device 10 is composed of a friction force adjustment part 42 and a main body part 41, and the position of the light-emitting part 20 can be easily adjusted by friction force without using magnetism, making it possible to provide a lighting fixture that can be used anywhere and can be finely adjusted.

Description

Technical Field

[0001] The present invention relates to a lighting device and a positioning device.

Background Art

[0002] Conventionally, there is known a technique in which a magnet is used for an outer part or a light-emitting part of a lighting device installed on a ceiling or a wall so that the position of the light-emitting part can be adjusted after the installation work is completed.

Summary of the Invention

Problems to be Solved by the Invention

[0003] A lighting fixture using a magnet cannot be used in a strong magnetic field environment such as an MRI room. Further, since the fixing and position adjustment of the fixture are performed by magnetic force, it is difficult to perform fine adjustment.

Means for Solving the Problems

[0004] In order to solve such problems, there is proposed a lighting device 10 having a light-emitting part 20, an installation part 30 for installing the light-emitting part 20 at a predetermined place, and a position movable part 40 for varying the position of the light-emitting part 20. The position movable part 40 is composed of a main body part 41 and a frictional force adjustment part 42, and the frictional force adjustment part 42 adjusts the ease of movement of the position movable part 40. Further, there is proposed the above lighting device 10, characterized in that a movable range limiting part 51 provided at a connection part between the installation part 30 and the position movable part 40 limits the movable range of the position movable part. Further, there is proposed the above lighting device 10, characterized in that the installation part 30 has a spring, and the spring and the frictional force adjustment part 42 together adjust the ease of movement of the position movable part 40.

Effects of the Invention

[0005] The present invention makes it possible to easily adjust the position of the light-emitting unit 20 after the lighting device 10 has been installed, and to realize a lighting device 10 in which the position of the light-emitting unit 20 can be varied so that it can be used even in strong magnetic field environments such as MRI rooms. [Brief explanation of the drawing]

[0006] [Figure 1] Configuration diagram of a lighting device showing one embodiment of the present invention. [Figure 2] External view (side view) of a lighting device showing one embodiment of the present invention [Figure 3] Detailed view of the movable part, fixed part, and connection part in Figure 2. [Figure 4] Top view of Figure 3 [Figure 5] External view (side view) of a lighting device showing one embodiment of the present invention [Figure 6] Detailed view of the movable part, fixed part, and connection part in Figure 5. [Modes for carrying out the invention]

[0007] Embodiments of the present invention will be described below with reference to the drawings.

[0008] Figure 1 is a diagram showing the configuration of a lighting device 10, which is one embodiment of the present invention. The basic principle of the present invention will be explained with reference to Figure 1. A movable position part 40 and an installation part 30, which are provided inside the lighting device 10, are connected via a connecting part 50, and the installation part 30 is installed at the installation location of the lighting device 10. The movable position part 40 consists of a main body part 41 and a friction force adjustment part 42. The main body part 41 is connected to the light-emitting part 20 or the outer casing part 11 of the lighting device, and the position of the light-emitting part 20 or the lighting device 10 is adjusted by the friction force generated in the movable position part 40. Figure 2 is a structural diagram (side view) of a lighting device, which is one embodiment of the present invention, and the lighting device 10 is a ceiling-mounted LED base light lighting device. Figure 3 is a detailed diagram of the movable position part 40, installation part 30 and connecting part 50 in Figure 2, and Figure 4 is a top view of the lighting device 10 as seen from above the ceiling. The lighting device 10 is attached to the ceiling surface 100 by two mounting points 30 provided on the outer casing 11 of the lighting device on the back of the lighting device. However, at least one mounting point 30 is sufficient depending on the specifications of the lighting device 10 and the conditions of the installation location. In this embodiment, the mounting points 30 are screwed to the surface of the ceiling surface 100, but fixing using suspension bolts or the like is also acceptable. If design is important, it is desirable to make the mounting points 30 as thin as possible and have a flat plate structure. It is even better to make the mounting points 30 so that they are not visible under any circumstances, taking into consideration the range of motion of the lighting device 10. Furthermore, a movable position part 40 is provided in the space surrounded by the light-emitting part 20 and the outer casing 11 of the lighting device, and the movable position part 40 and the mounting points 30 are connected via a through hole provided in the outer casing 11 of the lighting device. In this embodiment, the inner wall surface of the through hole provided in the outer casing 11 of the lighting device is used as a range of motion limiting part 51, and the range of motion is determined by the size and shape of the hole, but a stopper or the like may be provided separately as the range of motion limiting part 51. The movable position section 40 has PET resin sheets as friction force adjustment sections 42 on both the upper and lower surfaces of the main body section 41, and the ease of movement of the light-emitting section 20 is adjusted by the friction force generated between the light-emitting section 20 and the outer casing section 11 of the lighting device. The friction force is determined by the force with which the movable position section 40 is clamped between the light-emitting section 20 and the outer casing section 11 of the lighting device, and the surface roughness of the PET resin sheet, and the friction force can be easily changed by replacing the PET resin sheet.In this embodiment, since both the light-emitting part 20 and the lighting device outer casing 11, which the movable position part 40 contacts, are made of aluminum alloy, a PET resin sheet with the surface roughness kept as low as possible was used as the material for the friction force adjustment part 42 in order to reduce friction force, but other resin sheets or lubricating materials such as grease may also be used. By separating the movable position part 40 into the main body part 41 and the friction force adjustment part 42, the required friction force can be easily obtained depending on the material and shape of the friction force adjustment part 42. While fine adjustment of position is difficult with conventional magnetic force, fine adjustment can be easily performed with friction force. The static friction coefficient between the friction force adjustment part 42 and the lighting device outer casing 11 is preferably set to a range of 1 to 20, but more preferably to a range of 2 to 10. In addition, the static friction coefficient and the dynamic friction coefficient may be less than 1 or greater than 20.

[0009] Figure 5 is an external view (side view) of a lighting device showing one embodiment of the present invention, where the lighting device 10 is a ceiling-mounted LED base light lighting device. Figure 6 is a detailed view of the movable position part 40, installation part 30, and connection part 50 in Figure 5, and is a structure in which an installation spring 60 is added to the installation part 30 of the lighting device in Figure 3 on the ceiling surface. This is done by providing a mounting hole 101 in the ceiling surface 100 and sandwiching the ceiling surface 100 between the installation spring 60 provided on the installation part 30 and the outer part 11 of the lighting device to install the lighting device 10. Therefore, unlike the ceiling-mounted type, the installation part 30 needs to be thicker than a certain thickness in order to attach the installation spring 60, so in this embodiment, it is made 45 mm thick. This is a result of making it a thin structure because the installation space is limited in places such as the ceiling space of an MRI room. By adjusting the strength of the installation spring 60 in conjunction with the adjustment of the frictional force as described above, fine adjustment and the accuracy of maintaining the fixed position can be improved.

[0010] In this embodiment, the position of the light-emitting unit 20 is adjusted by moving the entire lighting device 10, but the light-emitting unit 20 may also be moved independently. [Explanation of Symbols]

[0011] 10. Lighting devices 11. Lighting device outer casing 20...Light-emitting part 30...Installation part 40...Position movable part 41...Main body 42...Friction force adjustment section 50...Connection part 51... Range of motion limiting part 60...Installation spring 100...Ceiling surface 101... Ceiling mounting holes

Claims

1. A lighting device comprising a light-emitting section, an installation section for installing the light-emitting section in a predetermined location, and a position-movable section for varying the position of the light-emitting section, wherein the position-movable section is composed of a main body and a friction force adjustment section, and the ease of movement of the position-movable section is adjusted by the friction force adjustment section.

2. The lighting device according to claim 1, characterized in that the range of motion is limited by a range of motion limiting part provided at the connection between the installation part and the position-movable part.

3. The lighting device according to claim 1, characterized in that the installation part has a spring, and the ease of movement of the movable part is adjusted in conjunction with the spring and the friction force adjustment part.

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