TW202100906A - Illumination device - Google Patents

Abstract

An illumination device (100) is embedded in a partition (10) that defines a first space (11) and a second space (12) different from the first space (11), the illumination device comprising: a light source unit (120); a cooling mechanism (140) that generates an air flow for cooling the light source unit (120); and a housing (110) that accommodates the light source unit (120) and the cooling mechanism (140), and that is attached to a ceiling panel (10) so that light emitted from the light source unit (120) proceeds to the first space (11) while the housing is disposed in the second space (12). The housing (110) includes: an intake port (102) that takes in outside air using an air flow generated by the cooling mechanism (140), and an exhaust port (103) that discharges the air flow. The intake port (102) is disposed at a position facing the first space (11).

Description

Lighting device

The invention relates to a lighting device.

In the past, there were lighting systems that used light projection devices, ie, projectors, to replace lighting devices (lights) for space performances. In these lighting systems, the light projection device is installed, for example, suspended from the ceiling. [Literary Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent Laid-Open No. 2016-161882

[Problems to be solved by the present invention]

In recent years, in order to improve the aesthetics of the lighting space, it has been studied to embed a lighting device (light projection device) in a partition (for example, a ceiling, a floor, a wall, etc.) that separates the lighting space and install it. In a building, the space on the opposite side of the lighting space separated by partitions (such as the back of the ceiling, under the floor, and the back of the wall) is a closed enclosed space, so there are more than lighting spaces dust.

Here, the lighting device is provided with a cooling mechanism that sucks and discharges external air. However, if the lighting device is embedded in the partition, the air is sucked in from the enclosed space and dust is introduced, which increases the possibility of quality degradation.

The object of the present invention is to provide a lighting device, even if it is embedded in a partition, the suction of dust from a closed space is still suppressed, thereby enabling long-term quality maintenance. [Technical means to solve the problem]

An aspect of the present invention is a lighting device that is embedded in a partition that separates a first space and a second space different from the first space. The lighting device includes: a light source unit; a cooling mechanism for generating a light source Part cooling air flow; and a housing, containing the light source part and cooling mechanism, installed in the partition body in a manner that emits light from the light source part to the first space when the light source part and the cooling mechanism are arranged in the second space; and the housing , It is equipped with an air suction port for sucking in the outside air by the air flow generated by the cooling mechanism, and an exhaust port for discharging the air flow; the air suction port is arranged at a position facing the first space. [Effects of the invention]

According to the lighting device of the present invention, although it is embedded in the partition, it can still suppress the suction of dust from the enclosed space, thereby maintaining the quality for a long time.

Hereinafter, the lighting device according to the embodiment of the present invention will be described using the drawings. In addition, the embodiments described below all show a preferred specific example of the present invention. Therefore, the numerical values, shapes, materials, constituent elements, arrangement and connection forms of constituent elements, etc. shown in the following embodiments are merely examples, and they are not intended to limit the present invention. Therefore, among the constituent elements of the following embodiments, the constituent elements that are not described in the independent claims showing the highest concept of the present invention will be described as arbitrary constituent elements.

In addition, each figure is a schematic diagram, not a strict illustration. In addition, in each figure, the same symbol is given to the same structural member.

[Implementation form] Hereinafter, the embodiment will be described. First, the usage of the lighting device of the embodiment will be described. Fig. 1 is a cross-sectional view showing the schematic configuration of the lighting device of the embodiment. As shown in FIG. 1, the lighting device 100 is installed on the ceiling 10 in the building. The ceiling 10 is an example of a partition that separates the first space 11 that is the living space of the building from the second space 12 that is the back of the ceiling. The second space 12 is a closed space usually in a closed state. Therefore, the second space 12 is a space where it is not easy to clean, and it is easy to accumulate dust and the like.

The lighting device 100 is fitted and fixed to the opening 13 provided in the ceiling 10. The light irradiation surface 101 in the lighting device 100 is exposed from the front surface of the ceiling 10 (the main surface on the first space 11 side). In addition, most of the lighting device 100 is arranged in the second space 12.

Next, the configuration of the lighting device 100 will be described. The lighting device 100 includes a housing 110, a light source unit 120, an image element 130, a cooling mechanism 140, an air intake duct 150, and an exhaust duct 160.

The housing 110 houses the light source unit 120, the cooling mechanism 140, the imaging element 130, the suction duct 150, and the exhaust duct 160. The housing 110 is, for example, a substantially rectangular parallelepiped-shaped housing made of resin or metal. The housing 110 has a light irradiation surface 101 on one side, and light is irradiated from the light irradiation surface 101. Specifically, a projection lens 111 is embedded in a part of the light irradiation surface 101, and light (refer to the two-dot chain line in FIG. 1) is irradiated downward from the projection lens 111. The irradiation direction of the light from the projection lens 111 may be a direction crossing the light irradiation surface 101.

In addition, a suction port 102 and an exhaust port 103 are formed in a part of the light irradiation surface 101. Specifically, the intake port 102 and the exhaust port 103 are arranged to sandwich the projection lens 111 in a cross-sectional view. The suction port 102 and the exhaust port 103 are arranged at positions opposite to the first space 11.

The suction port 102 is covered by a first filter 104 that can be replaced arbitrarily. The exhaust port 103 is covered by a second filter 105 that can be replaced arbitrarily. The casing 110 seals the parts other than the suction port 102 and the exhaust port 103 to form the inside and the outside of the casing 110, and cannot ventilate the parts other than the suction port 102 and the exhaust port 103.

The first filter 104 is a dust-collecting filter, and removes dust and oil that enters the housing 110 from the suction port 102. The second filter 105 is a dust-collecting filter and removes dust and oil that enters the housing 110 from the exhaust port 103.

The light source 120 is a device that irradiates the image element 130 with light. Examples of the light source included in the light source unit 120 include mercury lamps, LEDs (Light Emitting Diodes), LDs (Laser Diodes), and the like. Any light source becomes a heat source when light is irradiated, and becomes a high temperature. The light source unit 120 may include a plurality of light sources that emit red light, blue light, and green light, respectively. In addition, the light source unit 120 may also be provided with a light source of only one color light, and a fluorescent wheel for wavelength conversion into a color light different from the color light emitted by the light source.

The image element 130 is an element that forms a projected image by light from the light source 120. As the image element 130, a transmissive liquid crystal element, a reflective liquid crystal element, a DMD (Digital Micromirror Device), etc. can be cited. In FIG. 1, the image element 130 is assumed to be a reflective liquid crystal element or a DMD. The image element 130 also becomes a heat source during driving and becomes a high temperature.

In addition, although not shown in this embodiment, the housing 110 is provided with an optical system for guiding the light irradiated by the light source 120 to the image element 130, and an optical system for guiding the light reflected by the image element 130 to the projection lens 111. system.

The cooling mechanism 140 is a mechanism for cooling the heat sources (the light source unit 120 and the image element 130, etc.) in the housing 110. Specifically, the cooling mechanism 140 includes a first fan 141 and a second fan 142. The first fan 141 is arranged in the housing 110 near the suction port 102. The first fan 141 is driven by rotation to introduce the air in the first space 11 from the suction port 102 into the housing 110. The second fan 142 is disposed near the exhaust port 103 in the housing 110. The second fan 142 is driven by rotation to exhaust the air in the housing 110 from the exhaust port 103 toward the first space 11. In FIG. 1, the airflow generated in the housing 110 due to the driving of the first fan 141 and the second fan 142 is shown by dotted arrows. Along this air flow, the light source 120 and the image element 130 are arranged, so the light source 120 and the image element 130 can be efficiently cooled by only one air flow generated by the cooling mechanism 140. In particular, the light source 120 with a large amount of heat is arranged on the upstream side of the image element 130, so the light source 120 can be efficiently cooled by the air just introduced from the first space 11.

The suction duct 150 is, for example, a metal or resin duct arranged in the housing 110. The suction duct 150 guides the airflow generated by the cooling mechanism 140 from the suction port 102 to the light source 120. Specifically, one end of the suction duct 150 is arranged to surround the suction port 102 near the suction port 102, and the other end is disposed near the light source unit 120. The first fan 141 is housed in the suction duct 150. Thereby, the airflow generated by driving the first fan 141 can be reliably passed through the air intake duct 150.

The exhaust duct 160 is, for example, a metal or resin duct arranged in the housing 110. The exhaust duct 160 guides the air flow generated by the cooling mechanism 140 to the exhaust port 103. Specifically, one end of the exhaust duct 160 is arranged near the image element 130 which is a heat source, and the other end is arranged so as to surround the exhaust 103 near the exhaust 103. The second fan 142 is housed in the exhaust duct 160. Thereby, the airflow generated by driving the second fan 142 can be reliably passed through the exhaust duct 160.

Fig. 2 is a block diagram showing the control structure of the lighting device of the embodiment. As shown in FIG. 2, the lighting device 100 includes a control unit 170 that controls the light source unit 120, the image element 130, and the cooling mechanism 140. The control unit 170 is provided with a CPU, ROM, RAM, etc.; the CPU reads programs stored in the ROM and expands them in the RAM to perform various processing. In the ROM, image data of the image formed by the image element 130 is stored in advance. In addition, the control unit 170 may also obtain image data from an external device such as a smartphone, a PC, or a remote control via the communication unit 190.

The control unit 170 drives the light source unit 120, the image element 130, the first fan 141, and the second fan 142 when the power is turned on (ON). Thereby, the light is irradiated from the projection lens 111 toward the first space 11 directly below the lighting device 100. In addition, in the housing 110, air flow is generated from the suction port 102 to the exhaust port 103 to cool the light source unit 120 and the image element 130. In addition, if other heat sources such as the circuit board and power supply board on which the control unit 170 is mounted are also pre-arranged in the flow path of the air flow based on the cooling mechanism 140, the other heat sources can also be cooled efficiently.

[Effects etc.] As described above, according to this embodiment, the lighting device 100 is embedded in the ceiling 10 (partition body), and the ceiling 10 separates the first space 11 and the second space 12 different from the first space 11. The lighting device 100 Equipped with: a light source unit 120; a cooling mechanism 140, which generates airflow for cooling the light source unit 120; and a housing 110, which houses the light source unit 120 and the cooling mechanism 140, so that the A space 11 emits light from the light source 120 and is installed on the ceiling 10; and the housing 110 has an air suction port 102 for sucking in external air by the air flow generated by the cooling mechanism 140, and an exhaust air for discharging the air flow Port 103; the suction port 102, which is arranged at a position facing the first space 11.

According to this method, the suction port 102 is disposed at a position facing the first space 11, so that external air can be introduced from the first space 11 into the housing 110 through the suction port 102. The first space 11 is a cleaner space than the second space 12, so dust is not easily introduced into the housing 110. In this way, even if the lighting device 100 is embedded in the ceiling 10, the suction of dust from the second space 12 that is the closed space can be suppressed. Therefore, the quality of the lighting device 100 can be maintained for a long time.

In addition, the closed space, that is, the second space 12, may also increase in temperature depending on the season. For example, in the case where the second space 12 is the back of the ceiling, there is also a building environment at 60°C to 70°C in summer. However, if the air inlet 102 is arranged at a position facing the first space 11 as in the present embodiment, the air can be introduced into the housing 110 from the first space 11 that has never been higher than the second space 12 , Cooling can be performed efficiently.

In addition, the exhaust port 103 is arranged at a position facing the first space 11 and is a different position from the intake port 102.

According to this method, since the exhaust port 103 is arranged at a position facing the first space 11, the air heated by the heat source in the housing 110 can be exhausted into the first space 11. Thereby, it is possible to suppress the accumulation of heat in the second space 12 due to exhaust gas. In addition, by arranging the exhaust port 103 at a position facing the first space 11, even when no air flow is generated at the time of stop, etc., dust in the second space 12 can be prevented from entering the exhaust port 103.

In addition, the lighting device 100 includes a first filter 104 that covers the air inlet 102.

According to this method, since the suction port 102 is covered by the first filter 104, even if dust or oil is sucked from the suction port 102, the dust can still be removed by the first filter 104. Therefore, the intrusion of dust into the housing 110 can be further suppressed, and the quality of the lighting device 100 can be maintained for a longer period of time.

In addition, the lighting device 100 includes a second filter 105 covering the exhaust port 103.

According to this method, since the exhaust port 103 is covered by the second filter 105, even if dust or oil enters from the exhaust port 103, the dust can be removed by the second filter 105. Therefore, the intrusion of dust into the housing 110 can be further suppressed, and the quality of the lighting device 100 can be maintained for a longer period of time.

In addition, the lighting device 100 includes an image element 130 which is disposed in the housing 110 and is used to form an image based on the light from the light source 120.

According to this method, since the image element 130 forms an image based on the light from the light source unit 120, various types of illumination light can be realized. In addition, during driving, the image element 130 also becomes a heat source, but since the cooling mechanism 140 generates air flow in the housing 110, the image element 130 can also be cooled. As mentioned above, the present invention is a structure in which dust does not easily penetrate into the housing 110, so dust does not easily adhere to the image element 130. Therefore, the quality of the image element 130 can be maintained for a long time.

In addition, the lighting device 100 includes an air suction duct 150 which is disposed in the housing 110 and guides the air flow generated by the cooling mechanism 140 from the air suction port 102 to the light source unit 120.

According to this method, the suction duct 150 guides the airflow from the cooling mechanism 140 from the suction port 102 to the light source unit 120, so that the light source unit 120 can be smoothly cooled. Therefore, the cooling efficiency can be further improved, and the quality of the lighting device 100 can be maintained for a longer period of time.

In addition, the lighting device 100 includes an exhaust duct 160 which is disposed in the housing 110 and guides the air flow generated by the cooling mechanism 140 to the exhaust port 103.

According to this method, the exhaust duct 160 guides the airflow from the cooling mechanism 140 to the exhaust port 103, so the warmed air can be smoothly discharged to the outside of the housing 110. Therefore, heat becomes less likely to stay in the housing 110, and as a result, the cooling efficiency can be further improved. Therefore, the quality of the lighting device 100 can be maintained for a longer period of time.

[Modification 1] Next, modification 1 will be described. Modification 1 is different from the above-mentioned embodiment in the following point: the housing is provided with a second exhaust port that exhausts the airflow generated by the cooling mechanism toward the second space. In the following description, the same parts as those of the lighting device 100 of the above-mentioned embodiment are given the same reference numerals and their descriptions may be omitted.

3 is a cross-sectional view showing the schematic configuration of the lighting device of Modification 1. As shown in FIG. 3, the housing 110 a of the lighting device 100A is provided with a second exhaust port 107 at a position facing the second space 12. Specifically, the second exhaust port 107 is arranged at a position facing the exhaust port 103 on the surface opposite to the light irradiation surface 101 in the housing 110a. In addition, if the second exhaust port 107 faces the second space 12, it can be arranged in any part of the housing 110a. The second exhaust port 107 is covered by a third filter screen 108 that can be freely replaced.

In addition, the lighting device 100A includes a second exhaust duct 180. The second exhaust duct 180 is, for example, a metal or resin duct arranged in the housing 110. The second exhaust duct 180 guides the air flow generated by the cooling mechanism 140 to the second exhaust port 107. Specifically, one end of the second exhaust duct 180 is arranged near the image element 130 which is a heat source, and the other end is arranged to surround the second exhaust port 107 near the second exhaust port 107. One end of the second exhaust duct 180 is arranged near one end of the exhaust duct 160. A second fan 142 is arranged at one end of the second exhaust duct 180 and on the upstream side of one end of the exhaust duct 160. Thereby, the airflow generated by the second fan 142 is divided into the exhaust duct 160 and the second exhaust duct 180, and is exhausted from the exhaust port 103 and the second exhaust port 107 to the outside of the casing 110a, respectively.

In this way, the casing 110a is provided with a second exhaust port 107 which exhausts the air flow generated by the cooling mechanism 140 toward the second space 12.

According to this method, the exhaust is exhausted from the second exhaust port 107 toward the second space 12, so the inside of the second space 12 can be ventilated with warmed air. Therefore, the humidity in the second space 12 can be reduced. That is, the heat source of the lighting device 100 can be cooled, and the humidity of the closed space, that is, the second space 12 can be reduced, and the condensation of buildings can also be suppressed. If the condensation of the building decreases, it is also possible to suppress the malfunction of the lighting device 100A due to the condensation. Therefore, the quality of the lighting device 100A can be maintained for a long time.

Furthermore, the lighting device 100A includes a third filter 108 covering the second exhaust port 107. According to this method, the second exhaust port 107 is covered by the third filter 108, so even if dust enters from the second exhaust port 107, the dust can still be removed by the third filter 108. Therefore, the intrusion of dust into the housing 110a can be further suppressed, and the quality of the lighting device 100 can be maintained for a longer period of time.

[Modification 2] Next, modification 2 will be described. Modification 2 is different from Modification 1 in the following point: the exhaust port 103 and the exhaust duct 160 are removed from the lighting device 100A of Modification 1. In the following description, the same parts as the lighting device 100A of Modification 1 may be given the same reference numerals and the description thereof may be omitted.

4 is a cross-sectional view showing the schematic configuration of the lighting device of Modification 2. As shown in FIG. 4, the housing 110b of the lighting device 100B is provided with a second exhaust port 107 at a position facing the second space 12, but no exhaust port is provided at a position facing the first space 11. In addition, the second fan 142 is housed in the second exhaust duct 180. Therefore, the airflow generated by driving the second fan 142 can surely pass through the second exhaust duct 180.

Here, the second exhaust port 107 is arranged above the heat source, so even if the second fan 142 is not driven due to a malfunction or the like, it can still be exhausted smoothly by convection. In addition, in the case of Modification 2, since all the airflow in the housing 110b is discharged from the second exhaust port 107, the ventilation effect for the closed space, that is, the second space 12 can be further improved.

[Modification 3] Next, modification 3 will be described. Modification 3 is different from the embodiment in the following point: the lighting device is mounted on the wall panel. In the following description, the same parts as those of the lighting device 100 of the above-mentioned embodiment are given the same reference numerals and their descriptions may be omitted.

Fig. 5 is a cross-sectional view showing a schematic configuration of a lighting device of Modification 3. As shown in FIG. 5, the lighting device 100C of Modification 3 is installed on the wall panel 10c in the building. The wall panel 10c is an example of a partition that separates the first space 11, which is the living space of the building, from the second space 12c, which is the internal space of the wall. The second space 12c is a closed space normally in a closed state. Therefore, the second space 12c is a space where it is not easy to clean and easy to accumulate dust and the like.

The lighting device 100C is fitted and fixed to the opening 13c provided in the wall panel 10c. The light irradiation surface 101 in the lighting device 100C is exposed from the front surface (the main surface on the side of the first space 11) of the wall panel 10c. In addition, most of the lighting device 100C is arranged in the second space 12c.

If the lighting device 100C installed on the wall panel 10c is controlled by the control unit 170 to drive the light source unit 120, the image element 130, the first fan 141, and the second fan 142, the lighting device 100C will be projected from the side of the lighting device 100C. The lens 111 irradiates light toward the first space 11. In addition, in the housing 110, the air flow is generated from the air inlet 102 to the air outlet 103, and cools the light source 120 and the image element 130. Here, the suction port 102 is arranged at a position facing the first space 11, so external air can be introduced from the first space 11 into the housing 110 through the suction port 102. The first space 11 is a cleaner space than the second space 12c, so dust is not easily introduced into the housing 110. In this way, even if the lighting device 100C is embedded in the wall panel 10c, the suction of dust from the second space 12c that is the closed space can be suppressed. Therefore, the quality of the lighting device 100C can be maintained for a long time.

In addition, regarding other points, the lighting device 100C of Modification 3 can also achieve the same effects as the lighting device 100 of the above-mentioned embodiment.

[Modification 4] Next, modification 4 will be described. Modification 4 is different from the embodiment in the following point: the lighting device is installed on the floor. In the following description, the same parts as those of the lighting device 100 of the above-mentioned embodiment are given the same reference numerals and their descriptions may be omitted.

6 is a cross-sectional view showing the schematic configuration of the lighting device of Modification 4. As shown in Fig. 6, the lighting device 100D of Modification 4 is installed on the floor 10d in the building. The floor 10d is an example of a partition that separates the first space 11, which is the living space of a building, from the second space 12d, which is under the floor. The second space 12d is a closed space normally in a closed state. Therefore, the second space 12d is a space that is not easy to clean, and is easy to accumulate dust and the like.

The lighting device 100D is fitted and fixed to the opening 13d provided in the floor 10d. The light irradiation surface 101 in the lighting device 100D is exposed from the front surface (the main surface on the side of the first space 11) of the floor 10d. In addition, most of the lighting device 100D is arranged in the second space 12d.

If the lighting device 100D installed on the floor 10d is controlled by the control unit 170 to drive the light source unit 120, the image element 130, the first fan 141, and the second fan 142, the projection lens 111 is located above the lighting device 100D. Light is irradiated toward the first space 11. In addition, in the housing 110, the air flow is generated from the air inlet 102 to the air outlet 103, and cools the light source 120 and the image element 130. Here, the suction port 102 is arranged at a position facing the first space 11, so external air can be introduced from the first space 11 into the housing 110 through the suction port 102. The first space 11 is a cleaner space than the second space 12d, so dust is not easily introduced into the housing 110. In this way, even if the lighting device 100D is embedded in the floor 10d, the suction of dust from the second space 12d that is the closed space can be suppressed. Therefore, the quality of the lighting device 100D can be maintained for a long time.

In addition, regarding other points, the lighting device 100D of Modification 4 can also achieve the same functions and effects as the lighting device 100 of the above-mentioned embodiment.

In addition, when the lighting device 100D is installed on the floor 10d, the entire suction port 102 and the exhaust port 103 may be covered with a water-shielding ventilation sheet to prevent the liquid falling on the floor 10d from entering the suction port 102 and Inside the exhaust port 103. In addition, the entire intake port 102 and exhaust port 103 may be covered with a rigid mesh body having a plurality of through holes to protect them from people or pets walking on the floor 10d.

[other] As mentioned above, although the lighting device of the present invention has been described based on the above-mentioned embodiment and each modification, the present invention is not limited to the above-mentioned embodiment and each modification. For example, the present invention may also be a configuration obtained by combining the above-mentioned embodiment and each modification example.

Although the above-mentioned embodiment illustrates the lighting device 100 provided with the image element 130, the lighting device may not include the image element.

In addition, although the above-mentioned embodiment illustrates the lighting device 100 including the first filter 104 and the second filter 105, the lighting device may not include at least one of the first filter and the second filter.

In addition, although the above-mentioned embodiment exemplified the lighting device 100 provided with the intake duct 150 and the exhaust duct 160, the lighting apparatus may not include at least one of the intake duct 150 and the exhaust duct 160.

In addition, although the above-mentioned embodiment exemplified the case where the cooling mechanism 140 includes the first fan 141 and the second fan 142, the number of fans included in the cooling mechanism may be at least one. In the case where only one fan is provided, the fan may be arranged on the side of the exhaust port.

In addition, the above-mentioned embodiment exemplified the case where the lighting device 100 is fitted into the opening 13 provided in the ceiling 10. The lighting device can also be placed on the ceiling. In this case, it is only necessary to form an opening in the ceiling to expose the projection lens, the air inlet, and the air outlet.

In addition, it can be realized by implementing various modifications that those with ordinary knowledge in the technical field of the embodiment can think of, or by arbitrarily combining the constituent elements and functions of each embodiment without departing from the scope of the present invention. The form is also included in the present invention.

10: Ceiling (zone partition) 10c: Wall panel (zone partition) 10d: Floor (zone partition) 11: The first space 12, 12c, 12d: second space 13,13c,13d: opening 100, 100A, 100B, 100C, 100D: lighting device 101: Light illuminated surface 102: suction port 103: exhaust port 104: The first filter 105: second filter 107: Second exhaust port 108: third filter 110, 110a, 110b: shell 111: Projection lens 120: light source 130: image component 140: Cooling mechanism 141: The first fan 142: The second fan 150: suction duct 160: exhaust duct 170: Control Department 180: second exhaust duct 190: Ministry of Communications

Fig. 1 is a cross-sectional view showing the schematic configuration of the lighting device of the embodiment. Fig. 2 is a block diagram showing the control structure of the lighting device of the embodiment. 3 is a cross-sectional view showing the schematic configuration of the lighting device of Modification 1. 4 is a cross-sectional view showing the schematic configuration of the lighting device of Modification 2. 5 is a cross-sectional view showing the schematic configuration of the lighting device of Modification 3. 6 is a cross-sectional view showing the schematic configuration of the lighting device of Modification 4.

10: Ceiling (zone partition)

11: The first space

12: second space

13: opening

100: lighting device

101: Light illuminated surface

102: suction port

103: exhaust port

104: The first filter

105: second filter

110: shell

111: Projection lens

120: light source

130: image component

140: Cooling mechanism

141: The first fan

142: The second fan

150: suction duct

160: exhaust duct

Claims (10)

A lighting device is embedded in a partition that separates a first space and a second space different from the first space. The lighting device includes: Light source A cooling mechanism that generates an air flow for cooling the light source part; and A housing, accommodating the light source part and the cooling mechanism, and is installed on the partition body in a way that when the light source part and the cooling mechanism are arranged in the second space, the light from the light source part is emitted to the first space; The casing is provided with a suction port for sucking in external air by the air flow generated by the cooling mechanism, and an exhaust port for discharging the air flow; The suction port is arranged at a position facing the first space. Such as the lighting device of claim 1, where: The exhaust port is arranged at a position facing the first space and different from the intake port. For example, the lighting device mentioned in item 1 or 2 of the request includes: The first filter covering the suction port. For example, the lighting device mentioned in item 1 or 2 of the request includes: The second filter covering the exhaust port. For example, the lighting device mentioned in item 1 or 2 of the request includes: The image element is arranged in the casing for forming an image based on the light from the light source part. For example, the lighting device mentioned in item 1 or 2 of the request includes: The suction duct is arranged in the casing and guides the air flow generated by the cooling mechanism from the suction port to the light source part. For example, the lighting device mentioned in item 1 or 2 of the request includes: The exhaust duct is arranged in the casing and guides the air flow generated by the cooling mechanism to the exhaust port. Such as the lighting device in item 1 or 2 of the claim, in which, The casing includes a second exhaust port for exhausting the air flow generated by the cooling mechanism toward the second space. For example, the lighting device mentioned in item 8 of the request includes: A third filter covering the second exhaust port. Such as the lighting device in item 1 or 2 of the claim, in which, The suction port and the exhaust port are respectively covered by a water-shielding and ventilating sheet.

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