WO2023095327A1

WO2023095327A1 - Downlight

Info

Publication number: WO2023095327A1
Application number: PCT/JP2021/043611
Authority: WO
Inventors: 潤一染井
Original assignee: カルテック株式会社
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2023-06-01
Also published as: CN116529526A; JPWO2023095327A1

Abstract

Provided is a downlight having the function of illumination.　Provided is a ceiling-recessed downlight (100). The downlight comprises: a first light (120) for illuminating downwards; a suction port (101) formed in a lower position than the ceiling surface; a discharge port (102) formed in a lower position than the ceiling surface; a fan (150) for suctioning air from the suction port and discharging air from the discharge port, and disposed at a higher position than the ceiling surface; a photocatalyst (131) for disinfecting the air from the suction port, and disposed at a higher position than the ceiling surface; and a second light (140) for directing light onto the photocatalyst, and disposed at a higher position than the ceiling surface.

Description

Downlight

The present invention relates to downlight technology.

Lighting devices that can deodorize and disinfect the air have long been known. For example, Japanese Patent Laying-Open No. 2016-048683 (Patent Document 1) discloses an air cleaning device, an air cleaning method using the air cleaning device, and an air cleaning system. According to Patent Document 1, a suction/exhaust port is provided on the wall surface of a housing to which an illumination light source is attached, and a forced air flow is generated inside and outside the housing through the suction/exhaust port in the housing. A fan for exhausting heat to the outside of the housing is provided, and further, a photocatalyst facing the flow path and UV for irradiating the photocatalyst with light containing ultraviolet rays are provided as an air cleaning means in the middle of the flow path of the forced air flow a in the housing. A light source was provided.

JP 2016-048683 A

An object of the present invention is to provide a lighting device that can sterilize and deodorize indoor air while effectively utilizing the space behind the lighting.

According to one aspect of the present invention, a recessed ceiling downlight is provided. The downlight includes a first light for illuminating downward, a suction port formed at a position lower than the ceiling surface, a discharge port formed at a position lower than the ceiling surface, and a position higher than the ceiling surface. A fan for sucking in air from the intake port and discharging air from the discharge port, a photocatalyst placed at a position higher than the ceiling surface and sterilizing the air from the intake port, and a photocatalyst above the ceiling surface a second light positioned at an elevated position for illuminating the photocatalyst.

As described above, according to the present invention, there is provided a lighting device capable of sterilizing and deodorizing indoor air while effectively utilizing the space behind the lighting.

1 is an upper perspective view showing the appearance of a downlight according to a first embodiment; FIG. 1 is a bottom perspective view showing the appearance of a downlight according to a first embodiment; FIG. 1 is a plan view of a downlight according to a first embodiment; FIG. FIG. 4 is a cross-sectional view taken along line AA of FIG. 3 in a state where the downlight according to the first embodiment is embedded in the opening of the ceiling; 1 is a top perspective view showing a main configuration of a downlight according to a first embodiment; FIG. 1 is a perspective view showing a photocatalyst unit according to a first embodiment; FIG. 1 is an exploded view of a photocatalyst unit according to a first embodiment; FIG. Fig. 2 is an upper perspective view showing the downlight with the upper cover removed according to the first embodiment; FIG. 2 is an upper perspective view showing the downlight with the photocatalyst unit pulled out according to the first embodiment; FIG. 2 is a block diagram showing the main control configuration of the downlight according to the first embodiment; FIG. It is a front sectional view showing the 1st downlight concerning a 4th embodiment. It is a front cross-sectional view showing a second downlight according to a fourth embodiment. It is a front sectional view showing the 3rd downlight concerning a 4th embodiment. It is a front cross-sectional view showing a downlight according to a fifth embodiment.

Hereinafter, a downlight 100 will be described as an embodiment of the present invention with reference to the drawings. In the following description, the same parts are given the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated. In the following description of the downlight 100, the appearance of the downlight 100, and the internal configuration of the downlight 100, the illumination body 120 of the downlight 100 is positioned downward as shown in FIG. Directions in the oriented state, ie, forward, rearward, leftward, rightward, upward, downward, etc., are used to describe.
[First embodiment]
<Configuration of Appearance of Downlight 100>

First, the configuration of the appearance of the downlight 100 according to the present embodiment will be described. 1 to 3, a downlight 100 according to the present embodiment is mainly composed of an upper cylindrical portion and a lower disk-shaped portion. In this embodiment, the radius of the lower disc is larger than the radius of the upper cylinder. In the present embodiment, downlight 100 is configured in a hat shape as a whole.

The upper cylindrical portion is covered with an upper cover 111. The upper cover 111 is embedded in the ceiling of a room or corridor. In other words, the upper cover 111 is almost invisible to people in the room or hallway.

The lower disc-shaped portion is covered with a lower cover 112 . The lower cover 112 is positioned lower than the ceiling surface. A suction port 101 is provided on the upper surface around the lower cover 112 . A discharge port 102 is provided in the central portion of the lower surface of the lower cover 112 . A motion sensor 160 is provided at the center of the outlet 102 . A first light 120 is provided around the outlet 102 to illuminate the room or corridor.

Regarding the downlight 100 according to the present embodiment, the air sucked from the outer peripheral portion of the lower cover 112 rises inside the upper cover 111 and is sterilized and deodorized inside the upper cover 111. exhaled downward from the center of the

Regarding the downlight 100 according to the present embodiment, the lower cover 112, the internal structure 100C shown in FIG. In addition, hereinafter, a set of parts accommodated inside the upper cover 111 of the entire downlight 100 is also referred to as an internal structure 100C.

Alternatively, a portion of the upper cover 111 may be embedded in the ceiling while the upper cover 111 is fixed to the lower cover 112 and the internal structure 100C. Thereafter, during maintenance or the like, the user presses the switch 155 to release the fixation of the upper cover 111 and the lower cover 112 while the upper cover 111 is fixed to the ceiling. Structure 100C can be extracted.
<Internal Configuration of Downlight 100>

Next, the internal configuration of the downlight 100 according to the present embodiment will be described with reference to FIGS. 4 and 5. FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3 in a state in which the upper portion of the downlight 100 is embedded in the opening 201 of the ceiling 200, and shows a front cross-sectional view of the downlight 100 at its front-rear central portion. . FIG. 5 is a top perspective view showing the main internal structure of the downlight 100. FIG.

First, a lower cover 112 and a first light 120 are provided below the downlight 100 according to the present embodiment. A suction port 101 is formed on the upper surface of the outer peripheral portion of the upper surface of the lower cover 112 , that is, on the upper surface of the portion outside the upper cover 111 . A suction filter 115 is attached to the suction port 101 . When the fan 150 , which will be described later, is driven, the inside of the upper cover 111 becomes negative pressure, and outside air is sucked into the inside of the lower cover 112 through the suction filter 115 .

A human sensor 160 is provided at the center of the lower surface of the lower cover 112 . A discharge port 102 is provided in the central portion of the lower cover 112 , that is, around the human sensor 160 . Air that has been disinfected and deodorized by a photocatalyst, which will be described later, is discharged downward from the discharge port 102 by the fan 150 . A first light 120 is arranged around the outlet 102 . In other words, the first light 120 is provided on the lower surface of the lower cover 112 and the outlet 102 is formed inside the first light 120 .

The first light 120 includes a plurality of

LEDs

121, 121, . and a cover 122 of the shape.

The upper and middle parts of the downlight 100 according to the present embodiment include, from top to bottom, a power connector 118, a second light 140, a photocatalyst unit 130, a fan 150, etc. as main components. The sides of the second light 140 , the photocatalyst unit 130 , the fan 150 , the upper portion of the first light 120 and the like are covered by the inner cover 113 . In this embodiment, the outer side of inner cover 113 is covered by upper cover 111 .

The second light 140 has a plurality of LED lights 142, 142, . A plurality of LED lights 142, 142 . . . illuminate the photocatalyst unit 130 arranged below.

As for the photocatalyst unit 130, the photocatalyst main body 131 is attached inside the side cover 132, as shown in FIGS. A gripping member 133 is attached to the side cover 132 . The gripping member 133 includes a peripheral frame 133A for attachment to the side cover 132, and a pinching frame 133B for pinching and gripping by the user's fingers.

The photocatalyst main body 131 is formed with a large number of vertically penetrating holes in order to increase the surface area, and is configured so that air can pass through from the top to the bottom. The photocatalyst main body 131 preferably has a thickness of several millimeters to several centimeters in the vertical direction, but may be a thin mesh sheet or the like.

Returning to FIGS. 4 and 5, a fan 150 is provided below the photocatalyst unit 130. As shown in FIG. In this embodiment, fan 150 is a propeller fan. The fan 150 includes a motor and a propeller, and the propeller causes the air to flow from above to below as the motor rotates. More specifically, the air above the photocatalyst main body 131 passes through the numerous holes in the photocatalyst main body 131, the fan 150, and the space inside the first light 120, that is, the space around the human sensor 160. flowing to

Since the downlight 100 according to the present embodiment is configured in this manner, when the fan 150 is driven, the air around the lower cover 112 is sucked into the filter 115 by the negative pressure generated in the upper space of the fan 150. , and is sucked into the lower cover 112 . The air flows upward through the space between the channel cover 114 and the inner cover 113 covering the sides of the fan 150 and the photocatalyst unit 130, that is, the space outside the fan 150 and the photocatalyst unit 130 and inside the inner cover 113. and flows. The air flows under the second light 140 due to the negative pressure of the fan 150 and flows downward inside the photocatalyst unit 130 . Then, the air flows downward inside the fan 150 , passes through the space inside the first light 120 , that is, the space around the human sensor 160 , and is discharged below the downlight 100 .

In the present embodiment,

leaf springs

117, 117 are provided outside the upper cover 111 and biased outward. The leaf springs 117, 117 are formed in a V shape when viewed from the front. As a result, as shown in FIG. 4, the downlight 100 is embedded and fixed in the ceiling 200 by pushing the upper cover 111 into the opening 201 of the ceiling 200 against the biasing force of the plate springs 117, 117. can be done.

When the downlight 100 is embedded in the ceiling 200 , the upper cover 111 , second light 140 , photocatalyst unit 130 , fan 150 and the like are preferably positioned higher than the ceiling surface 202 . The lower end of fan 150 may reach a position lower than ceiling surface 202 . On the other hand, in this state, the lower cover 112 , the first light 120 , the suction port 101 and the discharge port 102 are preferably located at positions lower than the ceiling surface 202 .

More specifically, as shown in FIGS. 1 to 5, in the present embodiment, the periphery of lower cover 112 has a shape that protrudes further outward than upper cover 111 in the horizontal direction. A suction port 101 is formed on the upper surface of the projecting portion 112X. That is, the suction port 101 is configured to face the ceiling surface 202 around the opening 201 . As a result, the downlight 100 according to the present embodiment can suck air in the vicinity of the ceiling 200 for sterilization. In other words, the entire air in the room can be sterilized and deodorized while allowing the air in the room to smoothly convect without causing the air in the vicinity of the ceiling 200 to stagnate.
<Removal Configuration of Photocatalyst Unit 130>

Further, regarding the downlight 100 according to the present embodiment, in other words, the internal structure 100C of the upper cover 111 of the downlight 100, as shown in FIGS. freely configured. More specifically, the user pulls out downward the internal structure 100C of the downlight 100, such as the inner cover 113 and the lower cover 112, from the upper cover 111 embedded in the ceiling 200, as shown in FIG. Next, as shown in FIG. 9, the user removes the photocatalyst unit 130 from the inner cover 113 by pinching the sandwiching frame 133B of the photocatalyst unit 130 . Thereby, the user can wash the photocatalyst main body 131 with tap water or the like while pinching the holding frame 133B of the photocatalyst unit 130 with one hand.
<Control Configuration of Downlight 100>

Further, as shown in FIG. 10 , in the downlight 100 according to the present embodiment, the control unit 170 controls the first light 120, the second light 140, It controls the fan 150 and the like. For example, if the human sensor 160 detects a person while the lighting switch in the room is turned on, the control unit 170 turns on the first light 120, the second light 140, and the fan 150. do. Control unit 170 turns on first light 120 and second light 120 when a state in which motion sensor 160 does not detect a person continues for a predetermined period of time, such as 10 minutes, while the lighting switch in the room is turned on. 2, the light 140 and the fan 150 are turned off.
[Second embodiment]

The control configurations of the first light 120, the second light 140, and the fan 150 are not limited to those of the above embodiments. For example, the control unit 170 always turns on the first light 120 when the lighting switch in the room is turned on, and turns on the second light 140 when the human sensor 160 detects a person. Or, the fan 150 is turned on. Control unit 170 turns on second light 140 or fan 140 if the state in which motion sensor 160 does not detect a person continues for a predetermined period of time, such as 10 minutes, while the lighting switch in the room is turned on. 150 is turned off, leaving the first light 120 on.

Alternatively, the control unit 170 turns on the second light 140 or the fan 150 when the lighting switch in the room is turned on, and turns on the first light when the human sensor 160 detects a person. Turn on light 120 . Control unit 170 turns off first light 120 when a state in which motion sensor 160 does not detect a person continues for a predetermined period of time, such as 10 minutes, while the lighting switch in the room is turned on. to keep the second light 140 and the fan 150 ON.
[Third Embodiment]

In the above embodiment, the human sensor 160 is arranged at the center of the lower surface of the lower cover 112 . However, the occupancy sensor 160 may be in another position, or the occupancy sensor 160 may not be mounted.
[Fourth Embodiment]

In the above embodiment, the suction port 101 is formed on the upper surface of the projecting portion 112X on the outer circumference of the lower cover 112. However, it is not limited to such a form.

For example, as shown in FIG. 11, the discharge port 102 may be formed inside the first light 120, while the suction port 101 directed downward may be formed outside the first light 120.

Alternatively, as shown in FIG. 12, the outlet 102 may be formed on the outside of the first light 120, and the suction port 101 directed downward may be formed on the outer side.

Alternatively, as shown in FIG. 13, a discharge port 102 is formed on the first direction side of the first light 120, and a downward suction port 101 is formed on another second direction side. may

That is, more specifically, when the downlight 100 is embedded in the ceiling 200, the upper cover 111, the second light 140, the photocatalyst unit 130, the fan 150, etc. are positioned higher than the ceiling surface 202. By configuring the cover 112, the first light 120, the suction port 101, and the discharge port 102 to be located at a position lower than the ceiling surface 202, the back of the first light 120, that is, the interior space of the ceiling 200 can be used. It becomes possible to sterilize and deodorize indoor air while effectively utilizing it.
[Fifth embodiment]

In the above embodiment, the air sucked from the outer peripheral portion of the lower cover 112 rises up the inner portion of the inner cover 113, is folded back at the upper portion, and is sterilized and deodorized in the inner portion of the flow path cover 114. It was discharged downward from the central portion of the lower cover 112 . However, the air flow may be reversed. That is, as shown in FIG. 14, the air sucked from the central portion of the lower cover 112 is sterilized and deodorized by the photocatalyst unit 130 while ascending the inner portion of the channel cover 114. The outer portion of the cover 114 may be lowered and expelled outward from the outer peripheral portion of the lower cover 112 .
[summary]

A ceiling recessed downlight is provided in the above embodiment. The downlight includes a first light for illuminating downward, a suction port formed at a position lower than the ceiling surface, a discharge port formed at a position lower than the ceiling surface, and a position higher than the ceiling surface. A fan for sucking in air from the intake port and discharging air from the discharge port, a photocatalyst placed at a position higher than the ceiling surface and sterilizing the air from the intake port, and a photocatalyst above the ceiling surface a second light positioned at an elevated position for illuminating the photocatalyst.

Preferably, the lower end of the ceiling-embedded downlight extends to the outside of the opening in the ceiling surface, and the upper surface of the extended portion is provided with a suction port.

The embodiments disclosed this time should be considered illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

100: Downlight 100C: Internal structure 101: Inlet 102: Outlet 111: Upper cover 112: Lower cover 112X: Projection 113: Inner cover 114: Channel cover 115: Suction filter 117: Leaf spring 118: Power connector 120 : First light 121 : LED
122: Cover 130: Photocatalyst unit 131: Photocatalyst main body 132: Side cover 133: Holding member 133A: Surrounding frame 133B: Holding frame 140: Second light 141: Base 142: LED light 150: Fan 155: Switch 160: Human sensor Sensor 170 : Control unit 200 : Ceiling 201 : Opening 202 : Ceiling surface

Claims

A downlight embedded in the ceiling,
a first light for illuminating downward;
a suction port formed at a position lower than the ceiling surface;
an outlet formed at a position lower than the ceiling surface;
a fan disposed at a position higher than the ceiling surface, for sucking air from the suction port and for discharging the air from the discharge port;
a photocatalyst disposed at a position higher than the ceiling surface for sterilizing the air from the suction port;
and a second light arranged at a position higher than the ceiling surface for applying light to the photocatalyst.
2. The ceiling-embedded downlight according to claim 1, wherein a lower end portion of said ceiling-embedded downlight extends outside an opening in said ceiling surface, and said suction port is formed on an upper surface of said extended portion. Downlight.