Indicator lamp for building facility

Abstract

Provided is a technology pertaining to an indicator lamp which is installed on a wall surface of a building facility and displays a static design, the indicator lamp having a high degree of freedom in installation on the wall surface and having exceptional design properties.　This display lamp for a building facility comprises: a projection housing part that polarizes light-source light to generate projection information having a static design, and projects the projection information toward a display part on a wall surface; and a control device that controls the projection operation performed by the projection housing part in accordance with the state of the building facility. The projection housing part is provided with: a plurality of optical units, each of which is provided with a light source part that emits the light-source light, a lens part that condenses the light-source light, and an optical filter part that polarizes the light-source light to generate the projection information; and a reflection member that reflects the projection information emitted from each of the plurality of optical units toward the display part. In cases in which the indicator lamp is a hall lantern installed on a wall surface of an elevator hall, the control device controls the projection operation of each of the plurality of optical units in accordance with the operation of the elevator.

Description

Indicator light for building facilities

[0001] The present disclosure relates to a technology of a lantern-type indicator light installed on the wall surface of building facilities.

[0002] Patent Document 1 discloses a technology related to an indicator for elevators. The indicator of this technology includes a light guide plate stacked in multiple layers and attached to a housing, and a light-emitting diode provided corresponding to each light guide plate and irradiating light on the end face of the light guide plate when energized. By energizing the light-emitting diode provided corresponding to any one of the plurality of light guide plates, a pattern formed on the light guide plate provided corresponding to the energized light-emitting diode is displayed.

[0003] Japanese Patent Application Laid-Open No. 2007-76910

[0004] Since the light source of the indicator in Patent Document 1 is not arranged on the back side of the light guide plate, the size of the indicator in the thickness direction can be configured to be relatively thin. Therefore, the indicator in Patent Document 1 can be directly installed on the wall surface without housing the device in an existing storage box formed on the wall surface. However, even if the indicator in Patent Document 1 is configured to be relatively thin, the thickness of the plurality of light guide plates cannot be avoided from protruding from the wall surface, and still problems such as a decrease in design and restrictions on the installation location remain.

[0005] The present disclosure has been made to solve the above-described problems, and an object thereof is to provide a technology of an indicator light that has a high degree of freedom in installation on a wall surface and excellent design in an indicator light installed on the wall surface of building facilities and displaying a static pattern.

[0006] The indicator light of the building facilities of the present disclosure is installed on the wall surface of the building facilities, includes a projection housing unit that polarizes the light source light to generate projection information of a static pattern and projects the projection information toward the display unit on the wall surface, and a control device that controls the projection operation by the projection housing unit according to the state of the building facilities.

[0007] According to the technology of the present disclosure, it is possible to provide a technology of an indicator light that has a high degree of freedom in installation on a wall surface and excellent design in an indicator light installed on the wall surface of building facilities and displaying a static pattern.

[0008] This is an external view diagram of an elevator to which a hall lantern according to an embodiment of this disclosure is applied. This is a front view showing the schematic external configuration of a hall lantern installed on a wall. This is a partial perspective view of the internal configuration of the hall lantern as seen from the horizontal direction H in Figure 2. This is a partial perspective view of the internal configuration of the hall lantern as seen from the vertical direction V in Figure 2. This is a diagram showing an example of the functional configuration of the hall lantern of the embodiment. This is a functional block diagram showing the functions realized by the control device. This is a flowchart of the routine executed by the control device. This is a diagram showing a modified example of the hardware resources of the control device. This is a perspective view showing the schematic external configuration of a hall lantern according to embodiment 2. This is a diagram showing an example of the installation of a hall lantern according to embodiment 2. This is a perspective view showing the schematic external configuration of a hall lantern according to embodiment 3. This is a perspective view showing an example of decorative parts.

[0009] The embodiments will be described below with reference to the drawings. In each drawing, elements common to all parts are denoted by the same reference numerals, and redundant explanations are omitted.

[0010] Embodiment 1. 1-1. External view diagram 1 of the elevator is an external view diagram of an elevator to which the hall lantern according to the embodiment of this disclosure is applied. The elevator 1 is installed as building equipment in a building having multiple floors. Each floor is provided with an elevator landing 2 which serves as an elevator hall.

[0011] Each landing 2 is equipped with a landing door 4 corresponding to the elevator 1. A landing push button 8 for calling the elevator 1 is provided on the wall 6 of the landing 2. In addition, a hall lantern 10 is installed above the wall 6 of the landing 2. The hall lantern 10 is an indicator light that projects a static diagram representing the operating status of the elevator 1 onto the display section 6a of the wall 6. The configuration of the hall lantern 10 will be described in detail below.

[0012] 1-2. Diagram 2 of the hall lantern configuration is a front view showing the schematic external configuration of the hall lantern installed on a wall. Figure 3 is a partial perspective view of the internal configuration of the hall lantern as seen from the horizontal direction H in Figure 2. Figure 4 is a partial perspective view of the internal configuration of the hall lantern as seen from the vertical direction V in Figure 2. Note that Figures 3 and 4 only show the main components of the internal configuration of the hall lantern 10.

[0013] The hall lantern 10 is a projection-type hall lantern that projects projection information of a static design onto the display unit 6a on the wall 6 from a housing that protrudes from the wall 6 toward the landing 2. The hall lantern 10 mainly consists of a projection housing 12, a plurality of optical units 14, a reflective member 22, and a control device 30. The projection housing 12 is a rectangular parallelepiped housing that forms the outer shell of the hall lantern 10 and is installed above the display unit 6a so as to protrude from the wall 6 of the landing 2. The projection housing 12 has a chamfered inclined surface 12a on at least a part of the edge of its bottom surface. Here, the shape in which the inclined surface 12a is provided on the edge of the bottom surface of the projection housing 12, excluding the edge that is in contact with the base end is shown. The plurality of optical units 14, the reflective member 22, and the control device 30 are housed inside the projection housing 12.

[0014] Each of the multiple optical units 14 is a unit that emits projection information of a unique static design from a light guide at its tip. Each of the multiple optical units 14 is arranged horizontally in parallel inside the projection housing 12 so that it emits projection information toward the tip side of the projection housing 12.

[0015] Each of the multiple optical units 14 comprises a light source unit 16, multiple lens units 18, and an optical filter unit 20. The light source unit 16 emits light toward the front end of the projection housing unit 12. The light source unit 16 is, for example, one or more LEDs. The multiple lens units 18 focus the light from the light source. The optical filter unit 20 polarizes the light from the light source to generate projection information for a static design.

[0016] The hall lantern 10 of this embodiment includes a first optical unit 14a and a second optical unit 14b as a plurality of optical units 14. In the following description, when distinguishing between the light source unit 16, the plurality of lens units 18, and the optical filter unit 20 of the first optical unit 14a, they will be referred to as the first light source unit 16a, the plurality of first lens units 18a, and the first optical filter unit 20a. Similarly, when distinguishing between the light source unit 16, the plurality of lens units 18, and the optical filter unit 20 of the second optical unit 14b, they will be referred to as the second light source unit 16b, the plurality of second lens units 18b, and the second optical filter unit 20b.

[0017] The first optical filter unit 20a polarizes the light source to generate projection information for an upward indicator, indicating that the elevator car 1 is moving in the "upward direction". On the other hand, the second optical filter unit 20b polarizes the light source to generate projection information for a downward indicator, indicating that the elevator car 1 is moving in the "downward direction".

[0018] The first light source unit 16a and the second light source unit 16b are mounted, for example, on a common substrate. The reflective member 22 reflects the projection information emitted from the optical unit 14 toward the front end of the projection housing unit 12 diagonally downward toward the display unit 6a on the wall surface 6. The first optical unit 14a and the second optical unit 14b are optically designed such that the projection information for the upward and downward displays is projected onto the same position on the display unit 6a without distortion, with their respective optical filter units 20 and lens units 18.

[0019] The control device 30 is a processing device that controls the projection operation by the projection housing unit 12 according to the state of the building equipment. Typically, the control device 30 independently controls the light source emitted from multiple optical units 14 according to the operating state of the elevator 1. When the control device 30 of the first optical unit 14a causes the first light source unit 16a to emit light, projection information for the upward display is generated as the light source passes through multiple first lens units 18a and first optical filter units 20a, and is emitted from the first optical unit 14a. The projection information for the upward display emitted from the first optical unit 14a is projected onto the display unit 6a via the reflective member 22. Similarly, when the control device 30 causes the second light source unit 16b of the second light source unit 16b to emit light, projection information for the downward display is generated as the light source passes through multiple second lens units 18b and second optical filter units 20b, and is emitted from the second optical unit 14b. The projection information for the downward display emitted from the second optical unit 14b is projected onto the display unit 6a via the reflective member 22.

[0020] 1-3. Figure 5 of the Functional Configuration of the Hole Lantern of the Embodiment shows an example of the functional configuration of the Hole Lantern of the Embodiment. The Hole Lantern 10 is configured to include, as the main components related to the control function, a control device 30, a first light source unit 16a, and a second light source unit 16b.

[0021] The control device 30 functions as a processing unit, like a computer, and controls the lighting state of the first light source unit 16a and the second light source unit 16b according to the direction of movement of the elevator 1. Typically, the control device 30 includes at least one processor 32 and at least one memory 34 coupled to the processor 32. The memory 34 stores at least one program 341 that can be executed by the processor 32 and various related data 342. By executing the program 341, the processor 32 performs various processes.

[0022] Figure 6 is a functional block diagram showing the functions realized by the control device 30. As shown in Figure 6, the control device 30 includes a signal acquisition unit 301 and a light emission processing unit 302, which are functions realized when the processor 32 executes the program 341.

[0023] The signal acquisition unit 301 is a functional block for acquiring operation signals transmitted from the control panel 40. This process is hereinafter referred to as the "signal acquisition process". The control panel 40 is a processing unit for comprehensively controlling the operation of the elevator car 1. The control panel 40 is configured to communicate data with the control device 30 via a wired or internet communication network. The control panel 40 transmits operation signals, which are signals representing the operation information of the elevator car 1, to the control device 30. This operation information includes, for example, the direction of movement of the car, the position of the car, and information on the opening and closing of the landing doors 4. The signal acquisition unit 301 acquires operation signals from the control panel 40 as needed.

[0024] The light emission processing unit 302 generates an operation command to cause the first light source unit 16a or the second light source unit 16b to emit light based on the operation signal acquired by the signal acquisition unit 301, and causes the first light source unit 16a or the second light source unit 16b to emit light according to the generated operation command. This process is hereinafter referred to as the "light emission process".

[0025] In the light emission process, the light emission processing unit 302 emits light from the first light source unit 16a when the direction of movement of the elevator car 1 included in the operation signal is upward, and emits light from the second light source unit 16b when the direction of movement is downward.

[0026] 1-4. Specific Processing Executed in the Hall Lantern of the Embodiment Below, with reference to the flowchart, the operation of projecting the direction of movement of the elevator car from the hall lantern 10 as the operating state of the elevator 1 will be described. Figure 7 is a flowchart of the routine executed by the control device 30. The routine shown in Figure 7 is repeatedly executed at a predetermined period by the processor 32 of the control device 30.

[0027] The process in step S100 corresponds to the signal acquisition process executed in the signal acquisition unit 301. Specifically, in step S100, it is determined whether or not an operation signal for the elevator 1 has been received from the control panel 40. If the determination is successful, the process proceeds to step S102; otherwise, the process of this routine is terminated.

[0028] The processing from steps S102 to S108 corresponds to the light emission processing performed in the light emission processing unit 302. Specifically, in step S102, it is determined whether the direction of movement of the cage included in the operation signal is upward. If the determination is found to be true, the process proceeds to step S104; otherwise, the process proceeds to step S106.

[0029] In step S104, the first light source 16a is illuminated. As a result, the projection information for the upward display is projected onto the display unit 6a on the wall 6. In step S106, it is determined whether the direction of movement of the car included in the operation signal is the downward direction. If the determination is successful, the process proceeds to step S108; otherwise, the processing of this routine is terminated. In step S108, the second light source 16b is illuminated. As a result, the projection information for the downward display is displayed on the display unit 6a on the wall 6.

[0030] The above configuration of the hall lantern 10 produces the following actions and effects.

[0031] According to the hall lantern 10, a display corresponding to the direction of movement of the elevator 1 is projected onto the display section 6a of the wall 6. With this projection display method, it is unnecessary to store the main unit of the equipment in a storage space embedded in the wall and to install the main unit of the equipment on the display section of the wall, thus increasing the degree of installation flexibility in modernization.

[0032] The hall lantern 10 is configured such that the light guide unit that emits projection information from the optical unit 14 is not directly facing the display unit 6a on the wall surface 6, but rather the projection information is reflected to the display unit on the wall surface 6 via the reflective member 22. With this configuration, it is possible to reduce the amount of protrusion of the projection housing 12 of the hall lantern 10 while ensuring the path distance from the light guide unit to the display unit 6a.

[0033] The reflective member 22 is configured to reflect the projection information emitted from the optical unit 14 diagonally downward toward the display unit 6a located below the projection housing 12. With this configuration, since the opening through which the emitted projection information passes is provided on the bottom side of the projection housing 12, the adhesion of dust and other debris to the optical system components is suppressed. This makes it possible to prevent deterioration of projection quality over a long period of time. In addition, since the projection information is irradiated diagonally downward toward the display unit 6a from the opening of the projection housing 12, it is possible to prevent the light emitted from the light source unit 16 from directly entering the user's eyes.

[0034] The projection information for the upward and downward indicators, selectively illuminated from the projection housing 12 of the hall lantern 10, is projected onto the same position on the display unit 6a of the wall surface 6. This configuration allows for a display that is easy for users to see and is also suitable for wall environments where the area of ​​the display unit 6a is limited. Furthermore, since the optical design of multiple optical units 14 can be standardized, manufacturing costs and the effort required for design can be reduced.

[0035] The projection housing portion 12 of the hall lantern 10 is provided with a chamfered inclined surface 12a on the edge of its bottom surface. With this configuration, the shading effect, where the inclined surface 12a is darker than the other surfaces, makes the housing appear slimmer.

[0036] 1-5. The modified embodiment of the hall lantern 10 may adopt the following modified form.

[0037] 1-5-1. Quantity of Optical Units 14 The number of optical units 14 in the Hall lantern 10 is not limited to two. That is, the Hall lantern 10 may be configured as an indicator light comprising a single optical unit 14 and projecting and displaying a single projection information, or it may be configured as an indicator light comprising three or more optical units 14 and selectively projecting and displaying three or more projection information.

[0038] 1-5-2. Control Device 30 Figure 8 shows a modified example of the hardware resources of the control device. In the example shown in Figure 8, the control device 30 includes, for example, a processor 32, a memory 34, and a processing circuit 38 including dedicated hardware 36. Figure 8 shows an example in which some of the functions of the control device 30 are realized by the dedicated hardware 36. All of the functions of the control device 30 may be realized by the dedicated hardware 36. As the dedicated hardware 36, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof can be used.

[0039] There are no limitations on the hardware placement of the control device 30. That is, the control device 30 may be located inside or outside the hall lantern 10. If the control device 30 is located outside the hall lantern 10, it is sufficient that the control device 30 is connected to the light source unit 16 of the hall lantern 10 by wired communication or wireless communication.

[0040] There are no limitations on the functional arrangement of the control device 30. That is, some or all of the functions of the control device 30 may be located in the control panel 40. Also, if the operation of the elevator 1 is monitored by a server located in a remote location, some or all of the functions of the control device 30 may be located on that server.

[0041] If the operation of elevator 1 is monitored by a server located in a remote location, the control device 30 may be configured to receive operation signals from the server via a communication network. The communication network can be a general-purpose communication method such as the Internet or short-range wireless communication.

[0042] 1-5-3. Projection housing part 12 The projection housing part 12 may not have a chamfered inclined surface 12a.

[0043] The projection housing part 12 may be configured to be able to adjust the position or size of the projection information projected onto the wall surface 6. For example, the projection housing part 12 is configured to be able to finely adjust the positions of the optical unit 14, the reflection member 22, etc. arranged inside. According to such a configuration, the position or size of the projection information can be optimized according to the installation environment of the hall lantern 10 on the wall surface 6.

[0044] 1-5-4. Light emission processing In the light emission processing, it may be possible to perform lighting control to change the lighting form of the hall lantern 10 according to the state of the elevator 1. Hereinafter, several lighting controls will be exemplified.

[0045] 1-5-4-1. Lighting control example 1 In the light emission processing, it may be possible to emit light from the light source part 16 in accordance with the landing timing of the car. In this case, the light emission processing part 302 of the control device 30 may calculate the landing timing of the car in reverse from the car position included in the operation signal, and emit the light of the light source part 16 at a timing that is a predetermined time earlier than the calculated landing timing.

[0046] 1-5-4-2. Lighting control example 2 In the light emission processing, the color of the projection information may be changed according to the congestion state of the car. In this case, the light source part 16 employs an LED capable of emitting light of a plurality of colors. The control panel 40 of the elevator 1 calculates an index value representing the congestion degree in the car from the image captured inside the car or the detection value of the weighing device of the car, and transmits it to the control device 30 together with the operation signal as congestion degree information. Then, the light emission processing part 302 of the control device 30 emits the light of the light source part 16 in a color corresponding to the congestion degree included in the congestion degree information. As an example, when the value indicates a high congestion degree, the light emission processing part 302 causes the light source part 16 to emit red light, and when the value indicates a low congestion degree, the light source part 16 emits white light.

[0047] 1-5-4-3. Lighting control example 3 In the light emission process, the color of the projection information may be changed in accordance with the opening and closing timing of the landing door 4. In this case, for example, an LED capable of emitting light of a plurality of colors is adopted for the light source unit 16. The light emission processing unit 302 of the control device 30 changes the emission color of the light source unit 16 at the opening and closing timing of the landing door 4 obtained from the door opening / closing information included in the operation signal. As an example, the light emission processing unit 302 causes the light source unit 16 to emit white light during normal times, and causes the light source unit 16 to emit red light at the opening and closing timing of the landing door 4.

[0048] 1-5-4-4. Lighting control example 4 In the light emission process, the color of the projection information may be changed in accordance with the required time until the arrival of the car. In this case, for example, an LED capable of emitting light of a plurality of colors is adopted for the light source unit 16. The light emission processing unit 302 of the control device 30 calculates the required time until the arrival of the car in reverse from the car position included in the operation signal, and changes the emission color of the light source unit 16 according to the length of the calculated required time. As an example, when the required time is longer than the determination value, the light emission processing unit 302 causes the light source unit 16 to emit red light, and when the required time is shorter than the determination value, the light emission processing unit 302 causes the light source unit 16 to emit blue light.

[0049] 1-5-5. Projection information The projection information is not limited to the shape, pattern, and color as long as it is a unique still image for each optical unit 14.

[0050] The projected information displayed may have special effects added to improve visibility. That is, the projected information displayed on the display section 6a of the wall 6 is susceptible to the influence of the material, pattern, color of the display section 6a of the wall 6, and the ambient brightness, due to the nature of the display format being projection. Therefore, the optical filter section 20 or the light source section 16 may be configured to add special effects to the projected information to improve visibility. Examples of special effects added to a static image by the configuration of the optical filter section 20 include outlining the boundaries of the static image, adding shadow representation to the static image, so-called negative-positive inversion to reverse the brightness and darkness of the static image, adding hatching to the static image, and adding color by adding a color filter. Examples of special effects added to a static image by the configuration of the light source section 16 include adding gradients of color, brightness, or combinations thereof, and changing the light source color. In this way, by adding special effects to the hall lantern 10 according to the installation environment, it becomes possible to optimize the visibility of the projected information according to the installation environment.

[0051] 1-5-6. The hall lantern 10, as an indicator light for other building equipment, is not limited to its use as an indicator light for displaying the operating status of elevator 1 in the elevator hall, but may also be configured for use as an indicator light for other building equipment.

[0052] For example, the hall lantern 10 may be configured as an indicator light installed on the entrance wall of a restroom as part of the building's facilities. In this case, the hall lantern 10 functions as an indicator light that displays the usage status of the restroom. The first optical filter unit 20a is configured to generate a static image of a "crowded" indication as projection information, showing that the restroom is crowded. The second optical filter unit 20b is configured to generate a static image of a "vacant" indication as projection information, showing that the restroom is vacant. The building facilities generate a usage status signal indicating the usage status of the restroom based on signals from a motion sensor installed in the restroom and transmit it to the control device 30. In the signal acquisition process, the signal acquisition unit 301 acquires the usage status signal. Then, in the light emission process, the light emission processing unit 302 illuminates the first light source unit 16a to project projection information indicating congestion when it is determined that the restroom is crowded based on the usage status signal, and illuminates the second light source unit 16b to project projection information indicating that the restroom is vacant when it is determined that the restroom is vacant.

[0053] In the example described above, the hall lantern 10 was applied as an indicator light for restrooms as part of the building facilities. However, the hall lantern 10 may also be applied as an indicator light to show the usage status of other building facilities such as living spaces, rental conference rooms, and common areas. Thus, the hall lantern 10 of this embodiment can be applied to various indicator lights that project information according to the status of the building facilities.

[0054] 2. Embodiment 2. In Embodiment 2, the differences from the example disclosed in Embodiment 1 will be explained in particular detail. For features not described in Embodiment 2, any of the features from the example disclosed in Embodiment 1 may be adopted.

[0055] 2-1. Features of the Hole Lantern of Embodiment 2 Figure 9 is a perspective view showing the general external configuration of the hole lantern according to Embodiment 2. The hole lantern 10 according to Embodiment 2 further includes a screen section 50 in addition to the configuration of the hole lantern 10 according to Embodiment 1. The screen section 50 is a rectangular plate extending downward from the installation section of the projection housing section 12 and is sized to cover the display section 6a. The upper end of the screen section 50 is fixed by being sandwiched in the gap between the projection housing section 12 and the wall surface 6. There are no limitations on the method of fixing the screen section 50.

[0056] With this configuration of the screen section 50, the projection information emitted from the projection housing section 12 is projected onto the screen section 50. This makes it possible to prevent a decrease in the visibility of the projection display even if the wall surface 6 has a color, pattern, or uneven surface that makes the projected display difficult to see.

[0057] Figure 10 shows an example of the installation of a hall lantern according to Embodiment 2. When modernizing elevator 1, the hall lantern before modernization may be of the type that is stored in a storage space 6b embedded in the wall surface 6. When installing a new hall lantern 10 according to Embodiment 2 in such a wall surface 6, the existing storage space 6b is not used, so it is necessary to devise a way to conceal the storage space 6b.

[0058] In the example shown in Figure 10, the hall lantern 10 according to Embodiment 2 is installed in a position where the screen portion 50 covers the opening of the storage space 6b. With this configuration, the storage space 6b can be hidden by the screen portion 50 without having to prepare a separate member to hide the storage space 6b.

[0059] 3. Embodiment 3. In Embodiment 3, the differences from the example disclosed in Embodiment 1 will be explained in particular detail. For features not described in Embodiment 3, any of the features from the example disclosed in Embodiment 1 may be adopted.

[0060] 3-1. Features of the Hole Lantern of Embodiment 3 Figure 11 is a perspective view showing the general external configuration of the hole lantern according to Embodiment 3. The hole lantern 10 according to Embodiment 3 is further equipped with decorative parts 60 in addition to the configuration of the hole lantern 10 according to Embodiment 1. Figure 12 is a perspective view showing an example of the decorative parts. The decorative parts 60 are detachable decorative parts that cover three sides of the projection housing portion 12 of the hole lantern 10. The decorative parts 60 have a design on their surface, which is made of color, pattern, texture, or a combination thereof. There are no limitations on the form of the design of the decorative parts 60. In addition, a mounting member 62 for sheet adhesion or magnetic attachment to the projection housing portion 12 is provided on the back surface of the decorative parts 60.

[0061] The decorative component 60 may be configured to cover at least a part of the projection housing 12, and may be configured to cover all three sides of the projection housing 12 as a single U-shape, or it may be configured to cover each side of the projection housing 12 separately.

[0062] With this configuration of decorative components 60, the design of the hall lantern 10 can be easily changed to meet the diverse needs of customers.

[0063] 1 Elevator, 2 Landing, 4 Landing door, 6 Wall surface, 6a Display unit, 6b Storage space, 8 Landing push button, 10 Hall lantern, 12 Projection housing unit, 12a Inclined surface, 14 Optical unit, 14a First optical unit, 14b Second optical unit, 16 Light source unit, 16a First light source unit, 16b Second light source unit, 18 Lens unit, 18a First lens unit, 18b Second lens unit, 20 Optical filter unit, 20a First optical filter unit, 20b Second optical filter unit, 22 Reflective member, 30 Control device, 32 Processor, 34 Memory, 36 Dedicated hardware, 38 Processing circuit, 40 Control panel, 50 Screen unit, 60 Decorative parts, 301 Signal acquisition unit, 302 Light emission processing unit, 341 program, 342 data

Claims

1. An indicator light for a building facility, comprising: a projection housing unit installed on the wall surface of the building facility, which polarizes light from a light source to generate projection information of a static design, and projects the projection information toward a display unit on the wall surface; and a control device that controls the projection operation by the projection housing unit according to the state of the building facility.

2. The indicator light for building equipment according to claim 1, wherein the projection housing comprises a plurality of optical units each having a light source unit that emits the light source, a lens unit that focuses the light source, and an optical filter unit that polarizes the light source to generate the projection information, and a reflective member that reflects each of the projection information emitted from the plurality of optical units toward the display unit.

3. The indicator light for building equipment according to claim 2, wherein the projection housing is installed above the display unit and protrudes from the wall surface, the plurality of optical units are arranged in parallel so as to emit the projection information toward the tip of the projection housing unit, and the reflective member is configured to reflect each of the projection information emitted from the plurality of optical units diagonally downward toward the same position on the display unit.

4. The building equipment includes an elevator, the projection housing is installed on the wall surface of the elevator hall, and the control device is configured to control the projection operation of each of the plurality of optical units in accordance with the operation of the elevator.

5. The indicator light for building equipment according to claim 4, wherein the plurality of optical units include a first optical unit including a first optical filter unit that generates an upward indicator as projection information indicating that the direction of movement of the elevator is upward, and a second optical unit including a second optical filter unit that generates a downward indicator as projection information indicating that the direction of movement of the elevator is downward, and the control device is configured to selectively display the upward indicator when the direction of movement of the elevator is upward, and to selectively display the downward indicator on the display unit when the direction of movement of the elevator is downward.

6. The indicator light for building equipment according to claim 4 or 5, wherein the control device is configured to perform lighting control to change the lighting pattern of the light emitted from the light source unit based on the state of the elevator.

7. The indicator light for building equipment according to claim 6, wherein the light source unit is configured to emit light of multiple colors, and in the lighting control, the control device is configured to change the color of the light source according to the degree of congestion in the elevator car.

8. The building facility includes a restroom, the projection housing is installed on the wall surface of the entrance to the restroom, and the control device is configured to control the projection operation of each of the plurality of optical units according to the usage status of the restroom, as described in claim 2 or claim 3.

9. The indicator light for building equipment according to claim 8, wherein the plurality of optical units include a first optical unit including a first optical filter unit that generates a crowded indicator as projection information indicating that the restroom is crowded, and a second optical unit including a second optical filter unit that generates an empty indicator as projection information indicating that the restroom is empty, and the control device is configured to selectively display the crowded indicator on the display unit when the restroom is in a crowded state, and to selectively display the empty indicator on the display unit when the restroom is empty.

10. An indicator light for building equipment according to any one of claims 1 to 9, further comprising a plate-shaped screen portion extending downward from the projection housing portion along the wall surface so as to cover the display portion on the wall surface.

11. The indicator light for building equipment according to claim 10, wherein the screen portion is arranged to be sandwiched between the projection housing portion and the wall surface.

12. The indicator light for building equipment according to claim 10 or claim 11, wherein the screen portion is arranged to cover the opening of a storage space embedded in the wall.

13. An indicator light for building equipment according to any one of claims 1 to 12, further comprising a decorative component that covers at least a portion of the projection housing.

14. The indicator light for building equipment according to claim 13, wherein the decorative component is configured to be detachably fixed to the projection housing by magnetic attachment or adhesive.

15. The indicator light for building equipment according to any one of claims 1 to 14, wherein the projection housing portion is provided with a chamfered inclined surface on at least a portion of the edge of the bottom surface.

16. The indicator light for building equipment according to any one of claims 1 to 15, wherein the projection housing is configured to add a special effect to enhance the visibility of the static design.

17. The indicator light for building equipment according to claim 16, wherein the special effect on the static design includes one of the following: adding a border to the boundary, adding a shadow, inverting light and dark, adding hatching, and adding color.

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