JP7532147B2 - Lighting equipment - Google Patents

Description

An embodiment of the present invention relates to a lighting device that is installed on a mounting surface.

Conventionally, a lighting assembly is known that includes a light source configured to emit ultraviolet light and a reflector, and that allows the angle of the irradiation direction to be adjusted.

By using such a lighting assembly, it is possible to irradiate ultraviolet light at various positions within a space by changing the direction of irradiation.

However, if the range of movement of the irradiation direction becomes wider, ultraviolet rays may be irradiated onto the mounting surface, which may accelerate deterioration of the mounting surface. Furthermore, if an ultraviolet-detecting smoke detector is installed on the mounting surface, there is a risk that this smoke detector may malfunction if it is irradiated with ultraviolet rays.

JP 2019-72476 A

The problem that this invention aims to solve is to provide a lighting device that can change the direction of ultraviolet light irradiation while suppressing irradiation of ultraviolet light on the surface to which it is attached.

The lighting device of the embodiment includes an attachment part installed on a mounting surface, a holding part attached to the attachment part, and a lamp body. The lamp body includes a light source capable of emitting ultraviolet light, a translucent cover provided on the front side of the light source, an irradiation opening closed by disposing the translucent cover on the front part , and a housing having an inclined part provided to expand from the periphery of the irradiation opening toward the front side and outward. The lamp body is held so that the translucent cover is disposed below the mounting surface and the orientation is variable relative to the holding part. When the orientation of the lamp body is changed, the orientation of the lamp body is regulated so that the angle between the inclined part located in the direction in which the orientation of the lamp body is changed and a center line perpendicular to the front part is smaller than the angle between the direction parallel to the mounting surface and the center line.

The lighting device of the embodiment can change the direction of ultraviolet light irradiation while suppressing irradiation of ultraviolet light on the mounting surface.

FIG. 2 is a side view of a lighting device according to an embodiment. FIG. FIG. FIG. 2 is a perspective view of the above lighting device in an exploded state.

The lighting device 10 of one embodiment will be described below with reference to Figures 1 to 4.

The lighting device 10 is installed on a mounting surface 11, with a portion of the lighting device 10 embedded in an opening 13 provided in a mounting member 12 that constitutes the mounting surface 11. In this embodiment, the mounting surface 11 is a ceiling surface, and the mounting member 12 is a ceiling member, and each direction of the lighting device 10 when installed on the ceiling surface will be described.

The lighting device 10 includes a built-in chassis 16, which is a mounting portion 15 that is installed on the mounting surface 11, and a lamp unit 17 that is attached to the built-in chassis 16.

The embedded chassis 16, which is the mounting portion 15, is cylindrical with an open bottom. The embedded chassis 16 has a disk-shaped mounting surface portion 20, a peripheral surface portion 21 provided on the periphery of the mounting surface portion 20, and a flange portion 22 protruding from the peripheral surface portion 21 to the outer periphery.

The embedded chassis 16 is inserted into the opening 13 of the mounting member 12, and with the flange portion 22 abutting the mounting surface 11, it is attached to a hanging bolt protruding from the ceiling structure above the opening 13.

Inside the embedded chassis 16 are mounted a terminal block 25 that connects the power supply line drawn into the embedded chassis 16, and a power supply unit 26 that converts the external power supplied through this terminal block 25 into a specified lighting power supply and supplies it to the lighting unit 17.

The lamp unit 17 also has a decorative frame 30 attached to the front side of the built-in chassis 16, an arm 32 which is a holding portion 31 provided on the front side of the decorative frame 30, and a lamp body 33 attached to the arm 32.

The decorative frame 30 is formed in a cylindrical shape with an opening on the bottom side. The decorative frame 30 has a disk-shaped mounting surface portion 36, a peripheral surface portion 37 provided from the peripheral portion of the mounting surface portion 36, and a rim frame portion 38 protruding from the peripheral surface portion 37 to the outer periphery. A recess 39 that opens to the front side is provided on the inside of the decorative frame 30, i.e., on the inside of the mounting surface portion 36 and the peripheral surface portion 37. A shaft portion 40, which is a first shaft portion or a vertical shaft portion that rotatably mounts the arm 32, is provided in the center of the mounting surface portion 36. The shaft portion 40 allows the arm 32 to rotate in the horizontal direction, which is parallel to the mounting surface 11, around the vertical direction, which is perpendicular to the mounting surface 11. The shaft portion 40 is cylindrical and allows wiring that electrically connects the power supply unit 26 and the lamp unit 17 to be inserted therethrough.

The mounting surface 36 of the decorative frame 30 is provided with multiple mounting holes 41. The decorative frame 30 is inserted into the embedded chassis 16, and with the edge frame portion 38 covering the flange portion 22 and abutting against the mounting surface 11, the decorative frame 30 is attached to the embedded chassis 16 by mounting screws 42 that are screwed into screw receivers provided on the inside of the embedded chassis 16 through each mounting hole 41. The mounting screws 42 are positioned outside the rotation area of the arm 32 and do not interfere with the rotating arm 32.

The arm 32, which is the holding part 31, is placed in the recess 39 of the decorative frame 30 and attached to the shaft part 40, and can rotate horizontally around the shaft part 40 in a direction parallel to the mounting surface 11. The arm 32 has an arm attachment part 45 attached to the shaft part 40, and arm parts 46 on both sides bent downward from both ends of this arm attachment part 45, and is formed into a roughly U-shaped cross section. The arm 32 can rotate horizontally within a range of 360° around the shaft part 40.

The lamp body 33 also includes a light source 50, a translucent cover 51 arranged on the front side of the light source 50, and a housing 52 in which the light source 50 and the translucent cover 51 are arranged.

The light source 50 is an ultraviolet LED that irradiates ultraviolet light. The ultraviolet LED is mounted on a substrate 55. The light source 50 is not limited to an ultraviolet LED, and a mercury lamp, a metal halide lamp, a fluorescent ultraviolet lamp, an excimer lamp, or the like may be used. In this case, the light source 50 is not mounted on the substrate 55, and a reflector is provided instead of the substrate 55. In addition to the light source 50 that irradiates ultraviolet light described above, a light source that irradiates visible light may also be provided. The ultraviolet light irradiated from the light source 50 may be ultraviolet light with a dominant wavelength of, for example, 222 nm that has little effect on the human body, or ultraviolet light with a dominant wavelength of 222 nm and wavelengths of 230 nm or more cut off that has less effect on the human body.

The light-transmitting cover 51 is made of a material such as glass or resin that transmits ultraviolet light and is less susceptible to deterioration due to ultraviolet light. The light-transmitting cover 51 is formed in a flat plate shape.

The housing 52 is made of a material such as metal or resin that blocks ultraviolet rays and is less susceptible to deterioration due to ultraviolet rays. The housing 52 is composed of a rear case 58 and a front case 59 that is combined and attached to the front side of the rear case 58. The housing 52 has a substantially rectangular front portion 60, a rear portion 61 opposite the front portion 60, side portions 62 on both sides that are attached to the arm 32, and upper and lower side portions 63 that intersect with the side portions 62 on both sides.

An irradiation opening 64 is formed in the front portion 60 of the housing 52. The irradiation opening 64 is provided in a substantially rectangular shape. The irradiation opening 64 may also be provided in a circular shape.

A light-transmitting cover 51 is disposed at a position inside the irradiation opening 64 of the housing 52 so as to close the irradiation opening 64, and a light source 50 is disposed at a position recessed from the irradiation opening 64 inwardly of the housing 52 so as to face the irradiation opening 64.

Wiring that electrically connects the power supply unit 26 and the light source 50 is pulled out from the rear side of the housing 52.

A slope 65 is provided on the four sides of the periphery of the irradiation opening 64 of the housing 52 so as to expand outward from the periphery of the light-transmitting cover 51. The slope 65 is sloped so as to expand from the rear side of the periphery of the irradiation opening 64 to the front side. The light source 50 is disposed on an extension line extending from the slope 65 toward the inside of the housing 52.

The side portions 62 on both sides of the housing 52 are rotatably attached to the arm portions 46 on both sides of the arm 32 by shaft portions 66, which are second shaft portions or horizontal shaft portions. The shaft portions 66 allow the lamp body 33 to rotate up and down around an axis in the horizontal direction, which is parallel to the mounting surface 11. The shaft portions 66 allow the lamp body 33 to rotate relative to the arm 32, making it possible to adjust the orientation of the lamp body 33 and to hold it in the adjusted orientation.

A recess 67 is provided on each side portion 62 on both sides of the housing 52, in which the tip of the arm portion 46 and the shaft portion 66 are disposed. The recess 67 is provided in a roughly V-shape, and has a width greater than the width dimension of the arm portion 46. The lamp body 33 is rotatable around the shaft portion 66 within a range in which the stopper portions 67a, which are the side edges on both sides of the recess 67, contact the edges of the arm portion 46 in the width direction.

The arm portion 46 and the recessed portion 67 of the housing 52 form a restricting portion 68 that restricts the rotation range of the lamp body 33, which can rotate around the shaft portion 66. The restricting portion 68 restricts the rotation range of the central axis Z of the lamp body 33 to the left and right, for example, by 45° from a position facing directly downward, which is perpendicular to the mounting surface 11.

Here, of the inclined portions 65 on the four sides around the irradiation opening 64 of the housing 52, the inclined portions 65 on both sides in the direction of rotation around the shaft portion 66 of the lamp body 33 are referred to as first inclined portions 65a, and the inclined portions 65 on both sides in the axial direction of the shaft portion 66 are referred to as second inclined portions 65b.

The angle θ1 that the inclined portion 65 (first inclined portion 65a) makes in the direction of rotation about at least the shaft portion 66 of the lamp body 33 with respect to the center line Z perpendicular to the front portion 60 of the housing 52 is, for example, less than 45°.

Then, the restricting portion 68 restricts the orientation of the lamp body 33 so that when the orientation of the lamp body 33 is changed, the inclination direction S1 spreading outward of the inclined portion 65 (first inclined portion 65a) is more forward (the forward side away from the mounting surface 11) than the direction S2 parallel to the mounting surface 11. This restricting condition is set by the angle of the inclined portion 65 and the rotatable angle of the lamp body 33, so the restricting condition can be satisfied by appropriately combining the angle of the inclined portion 65 and the rotatable angle of the lamp body 33.

The restricting portion 68 may restrict the orientation of the lamp body 33 by providing a protruding portion that protrudes integrally from the side portion 62 of the housing 52, or a separate restricting member on the side portion 62 of the housing 52, without providing a recessed portion 67. In other words, the restriction of the orientation of the lamp body 33 may be achieved by interference between the lamp body 33 and the arm portion 46, or engagement between the arm portion 46 and the shaft portion 66, or with another member.

The lamp body 33 also includes a distance detection means 71 that detects a human body that is at a predetermined distance or more from the light source 50, and a control means 72 that turns on the light source 50 when the distance detection means 71 detects that a human body is at a predetermined distance or more, and turns off the light source 50 when the distance detection means 71 detects that a human body is at a distance less than the predetermined distance.

The distance detection means 71 is provided on the side of the irradiation opening 64 on the front part 60 of the housing 52 so as to face the irradiation target area to be irradiated with ultraviolet light. The distance detection means 71 detects using at least one of a human sensor, a reflective sensor, a camera, etc. When a human sensor is used, the sensitivity of the human sensor is alternately changed between high sensitivity and low sensitivity at predetermined time intervals, and a human body that is a predetermined distance or more from the light source 50 is detected by setting it to high sensitivity, and a human body that is less than the predetermined distance from the light source 50 is detected by setting it to low sensitivity. When a reflective sensor is used, infrared rays are irradiated, and human bodies that are a predetermined distance or more from the light source 50 and human bodies that are less than the predetermined distance are detected in response to receiving infrared rays reflected from the human body, etc. When a camera is used, human bodies that are a predetermined distance or more from the light source 50 and human bodies that are less than the predetermined distance are detected from the angle of view of the camera.

The control means 72 is provided in the power supply unit 26, but may be configured separately from the power supply unit 26.

Next, when installing the lighting device 10 on the mounting surface 11, the power line drawn from the opening 13 of the mounting member 12 is pulled into the embedded chassis 16 and connected to the terminal block 25. The embedded chassis 16 is inserted into the opening 13 of the mounting member 12, and with the flange portion 22 abutting against the mounting surface 11, the embedded chassis 16 is attached to a hanging bolt protruding from the ceiling structure above the opening 13.

The power supply unit 26 and the light source 50 of the lamp body 33 are electrically connected by wiring that passes through the shaft portion 40 of the lamp unit 17. The decorative frame 30 of the lamp unit 17 is inserted into the embedded chassis 16, and the edge frame portion 38 that covers the flange portion 22 is abutted against the mounting surface 11. The lamp unit 17 is then attached to the embedded chassis 16 by the mounting screws 42 that are screwed into the screw receivers provided on the inside of the embedded chassis 16 through the mounting holes 41 of the decorative frame 30.

Then, after installing the lighting device 10 on the mounting surface 11, adjust the direction of the ultraviolet light.

By rotating the lamp body 33 horizontally around the shaft 40, the horizontal orientation of the lamp body 33, and therefore the horizontal orientation of the irradiation opening 64 through which ultraviolet light is irradiated, is adjusted.

By rotating the lamp body 33 vertically relative to the arm 32 around the shaft 66, the vertical orientation of the lamp body 33, and therefore the vertical orientation of the irradiation opening 64 through which ultraviolet light is irradiated, can be adjusted.

At this time, the restricting portion 68 allows the lamp body 33 to rotate around the shaft portion 66 within a range in which the stopper portions 67a, which are the side edges on both sides of the recessed portion 67 of the housing 52, contact the edges of the arm portion 46 in the width direction.

The restricting portion 68 restricts the orientation of the lamp body 33 so that when the orientation of the lamp body 33 is changed, the inclined direction S1 in which the inclined portion 65 (first inclined portion 65a) expands outward is toward the front side (the side away from the mounting surface 11) rather than the direction S2 parallel to the mounting surface 11.

Therefore, when the light source 50 is turned on, ultraviolet light from the light source 50 passes through the translucent cover 51 and is irradiated to the outside from the irradiation opening 64 of the housing 52, but the ultraviolet light is irradiated to the front side of the mounting surface 11 by the inclined portion 65, and irradiation of the ultraviolet light onto the mounting surface 11 is suppressed. This suppresses deterioration of the mounting surface 11 due to irradiation of ultraviolet light, and even if an ultraviolet-detecting smoke detector is installed on the mounting surface 11, it is possible to prevent ultraviolet light from being irradiated onto the smoke detector, preventing the smoke detector from malfunctioning.

When the light source 50 is turned on, the lighting device 10 irradiates ultraviolet light onto a specified irradiation area toward which the lamp body 33 is aimed, sterilizing the surfaces of the human body, installed objects, etc. present in the irradiation area.

It is also assumed that a human body present in the ultraviolet irradiation area may look into the light source 50 while the light source 50 is on. For this reason, the distance to the human body is detected by the distance detection means 71, and when it is detected that the human body is less than a predetermined distance, the light source 50 is turned off, thereby reducing the impact of ultraviolet light being irradiated onto the human's eyes. Furthermore, when it is detected that the human body is at or above the predetermined distance, the light source 50 is turned on to appropriately sterilize the human body since there is less impact on the human body.

In this way, in the lighting device 10 of this embodiment, when the orientation of the lamp body 33 is changed, the orientation of the lamp body 33 is restricted so that the outwardly extending inclination direction of the inclined portion 65 of the housing 52 is more forward than the direction parallel to the mounting surface 11. This makes it possible to change the direction of ultraviolet irradiation while suppressing the irradiation of ultraviolet rays to the mounting surface 11 and preventing the smoke detector from malfunctioning.

In addition, the distance detection means 71 detects the distance to the human body, and the light source 50 is turned on or off depending on the distance to the human body, thereby minimizing the impact on the human body and enabling appropriate sterilization.

The configuration of the lighting device 10 of this embodiment can also be applied to a direct-mount lighting device that is directly attached to the mounting surface 11.

Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims.

10 Lighting equipment
11 Mounting surface
15 Mounting part
31 Holding part
33 Lighting unit
50 Light Sources
51 Translucent cover
52 Case
60 Front part
64 irradiation apertures
65 Inclined section
71 Distance detection means
Z center line

Claims (2)

A mounting portion that is installed on a mounting surface;
A holding portion attached to the mounting portion;
a light source capable of emitting ultraviolet light, a light-transmitting cover provided on a front side of the light source, an irradiation opening that is closed by disposing the light-transmitting cover on the front part, and a housing having an inclined part provided so as to spread from the periphery of the irradiation opening toward the front side and outward, the light-transmitting cover being disposed below the mounting surface and held so that its orientation is variable with respect to the holding part;
Equipped with
a lighting device characterized in that, when the orientation of the lamp body is changed, the orientation of the lamp body is regulated so that the angle between the inclined portion located in the direction in which the orientation of the lamp body is changed and a center line perpendicular to the front portion is smaller than the angle between the direction parallel to the mounting surface and the center line. The lighting device according to claim 1, characterized in that the lighting body further has a distance detection means capable of detecting a human body at a predetermined distance or more from the lighting body and a human body at a distance less than the predetermined distance, and the light source is turned on when the distance detection means detects that a human body is at a distance greater than the predetermined distance, and the light source is turned off when the distance detection means detects that a human body is at a distance less than the predetermined distance.

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