JP2013097111A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of changing a lighting state in accordance with a type of a display unit.SOLUTION: A light emitting unit 2, a lighting unit 3, and a display unit 4a are held on a device body 10 of a guide light 1. When irradiation light of the light emitting unit 2 impinges on the inside of the display unit 4a through its upper end surface, the light is reflected in the display unit 4a and is emitted from the front surface to the outside to brightly display a pattern on the front surface. The lighting unit 3 is supplied with power from a regular power source or a standby power source to cause the light emitting unit 3 to emit light. A projection 42 indicative of a type is provided on a rear surface of the display unit 4a. The lighting unit 3 is provided with a micro switch 36 of which the contact state is switched by pushing an operation lever with the projection 42. Whether the projection 42 is provided or not, namely, the type of the display unit is determined in accordance with the contact state of the micro switch 36, and at least one of the light state during power supply from the regular power source and the lighting state during power supply from the standby power source is switched in accordance with the type of the display unit.

Description

  The present invention relates to a display device.

  Conventionally, a fluorescent lamp, a light guide plate that is arranged with a side face facing the fluorescent lamp, and emits light of the fluorescent lamp incident from the side face forward from the front surface, and a rectangular plate-like shape arranged on the front side of the light guide plate There has been a guide lamp device provided with a display means (see, for example, Patent Document 1).

  In the guide light device described in the above-mentioned Patent Document 1, the display means can be used regardless of whether the front side or the back side is the front side. Could be changed.

Japanese Patent Laid-Open No. 7-23469

  In the display device disclosed in Patent Document 1, the lighting state of the fluorescent lamp is constant regardless of the display content of the display means. Therefore, if you want to change the lighting state of the fluorescent lamp according to the type of the display unit (for example, the difference in display contents, application, or installation location), the lighting circuit unit that lights the fluorescent lamp in a different lighting state is used. It is necessary to prepare each and use it in combination with display means. For this reason, the number of types of lighting circuit units is increased, and man-hours for selecting lighting circuit units to be combined with display means from a variety of types are required. Therefore, the increase in the number of man-hours leads to high costs and selection errors. there were. Also, when changing the type of the display means in the middle, if it is necessary to change the lighting state along with the change of the type of the display means, the lighting circuit section must be changed together with the display means, It was uneconomical.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a display device capable of changing the lighting state in accordance with the type of the display unit.

  The display device of the present application includes a light emitting unit, a display unit, a lighting circuit unit, a device main body, and a lighting state setting unit. The display unit has a pattern on the front surface, and performs display by transmitting the irradiation light from the light emitting unit forward. The lighting circuit unit receives power supply from a normal power source or a standby power source and lights the light emitting unit. The apparatus main body holds the light emitting unit, the display unit, and the lighting circuit unit with the front surface of the display unit exposed. The lighting state setting unit determines the type of the display unit. The lighting state setting unit includes a lighting state in which the lighting circuit unit receives power from the normal power source and lights the light emitting unit, and a lighting state in which the lighting circuit unit receives power supply from the standby power source and lights the light emitting unit. Among these, at least one lighting state is set according to the type.

  In this display device, it is also preferable that the lighting state setting unit is provided integrally with the lighting circuit unit.

  In this display device, it is also preferable that the display unit includes a shape part having a different shape according to the type, and the lighting state setting unit determines the type of the display unit based on a contact state with the shape part.

  In this display device, a storage unit that stores identification information indicating the type of the display unit is attached to the display unit, and the lighting state setting unit may determine the type of the display unit by reading the identification information from the storage unit. preferable.

  According to the present invention, the lighting state setting unit can change the lighting state of the light emitting unit according to the type of the display unit. Accordingly, since the lighting circuit unit can be shared by a plurality of types of display units, the number of types of lighting circuit units can be reduced and the cost can be reduced.

The guide light of Embodiment 1 is shown, (a) is an exploded perspective view, (b) is an external perspective view, and (c) is a perspective view of the display unit viewed from the back side. It is a schematic block diagram same as the above. (A) is sectional drawing before attachment of a display part and a light emission part, (b) is sectional drawing of the state to which the display part and light emission part were attached. (A) is sectional drawing before attachment of a display part and a light emission part, (b) is sectional drawing of the state to which the display part and light emission part were attached. (A) (b) is explanatory drawing which shows the lighting pattern in the state which received electric power supply from the common power source. (A)-(c) is explanatory drawing which shows the lighting pattern in the state which received electric power supply from the standby power supply. The guide light of Embodiment 2 is shown, (a) is an exploded perspective view, (b) is the perspective view which looked at the display part from the back side. It is sectional drawing same as the above.

  Hereinafter, an embodiment in which a display device according to the present invention is applied to a guide light for evacuation guidance defined in the Fire Service Law will be described with reference to the drawings. The display device is not limited to the guide light, but may be an emergency light for evacuation guidance stipulated in the Building Standard Law, or an electric light for displaying various signs and advertisements.

(Embodiment 1)
Embodiment 1 is demonstrated based on FIGS. The guide light 1 of this embodiment is attached to a construction material (for example, a ceiling or a wall) and used as a sign for evacuation guidance. In the following description, unless otherwise specified, the vertical direction in FIG. 3A is the vertical direction, the horizontal direction in FIG. 3A is the front-rear direction, and the direction perpendicular to the plane of FIG. Will be described.

  As shown in FIGS. 1, 3 and 4, the guide lamp 1 includes a device main body 10, a light emitting unit 2, a lighting device 3, and display units 4 a and 4 b as main components. In this embodiment, there are two types of display units 4a and 4b, and one of the display units 4a and 4b is selected and used. In the following description, the description common to the display units 4a and 4b is expressed as the display unit 4, and the individual display units 4a and 4b are expressed as the display unit 4a or the display unit 4b.

  The apparatus main body 10 is a synthetic resin molded product, for example, and is formed in a rectangular box shape with an open front side. On the upper side wall 11 of the apparatus main body 10, a knockout 12 for a power supply line is provided at substantially the center in the left-right direction, and a knockout 13 for screw insertion is provided on each of the left and right sides of the knockout 12. The apparatus main body 10 is fixed to the ceiling material by passing a fixing screw (not shown) through a hole formed by opening the knockout 13 and screwing into a mounting bracket (not shown) fixed to the ceiling material. The In addition, a power line from an external power source (for example, a commercial AC power source) wired on the back side of the ceiling material is passed through a hole provided in the ceiling material and a hole formed by opening the knockout 12, and the device It is introduced into the main body 10. This power supply line is electrically connected to a terminal block (not shown) of the lighting device 3 housed in the device main body 10 so that power is supplied to the circuit portion of the lighting device 3.

  In the opening of the apparatus main body 10, a horizontally long rectangular parallelepiped light emitting section 2 and a rectangular plate-shaped display section 4 are mounted side by side, and the light emitting section 2 and the display section 4 open an opening on the front side of the apparatus main body 10. It is blocked.

  On the inner side surfaces of the left and right side walls of the apparatus main body 10, two locking pieces 14 that engage with the locking projections 41 provided on the left and right side edges of the display unit 4 are provided. Each locking piece 14 is formed in a substantially L shape when viewed from the left-right direction. When the display unit 4 arranged so as to cover the opening of the apparatus main body 10 is slid downward, the display unit The display unit 4 is attached to the apparatus main body 10 by the four locking projections 41 and the locking pieces 14 being locked.

  In addition, guide rods 22 and insertion terminals 23 provided on the left and right sides of the light emitting unit 2 are inserted and connected to the inner side surfaces of the left and right side walls of the apparatus body 10 at positions facing the back surface of the light emitting unit 2. An insertion port 15 is provided.

  The light emitting unit 2 includes a main body 21 formed in a rectangular parallelepiped shape elongated in the left-right direction, and a plurality of light emitting diodes (not shown) are arranged on the lower surface of the main body 21 at regular intervals. On both the left and right sides of the back surface of the main body 21, guide rods 22 that are inserted into the insertion ports 15 of the apparatus main body 10 and mechanically attach the main body 21 to the apparatus main body 10 are provided. Further, on both the left and right sides of the back surface of the main body 21, there are provided plug terminals 23 that are inserted into the plug port 15 of the apparatus main body 10 and are electrically connected to terminals arranged in the plug port 15. It has been. Thus, when the guide bar 22 and the insertion terminal 23 of the main body 21 are respectively inserted and connected to the insertion port 15 of the apparatus main body 10, the main body 21 is attached to the upper part of the apparatus main body 10, and in the main body 21. A plurality of housed light emitting diodes are connected between the output terminals of the lighting device 3.

  The two types of display units 4a and 4b are different in content, usage, or installation location from each other, and have the same configuration except for the projection 42 provided for identifying the type. The provided display unit 4a will be described with reference to FIG. The display unit 4b has the same configuration as the display unit 4a except that the projection 42 is not provided.

  The display unit 4a includes, for example, a rectangular plate-like display panel in which a picture indicating the direction of an evacuation exit and an evacuation route is formed on the front side, and a rectangular plate-like light guide panel arranged on the back side of the display panel. And a rectangular plate-like main body 40 coupled so as to overlap with each other. The light guide panel is, for example, a transparent acrylic resin molded product, and is formed in substantially the same shape as the display panel. The light emitted from the light emitting unit 2 is incident on the upper end surface of the light guide panel, reflected one or more times inside the light guide panel, and then uniformly forward from the front surface (surface facing the display panel) of the light guide panel. Is irradiated. The display panel is, for example, a synthetic resin molded product and is formed in a substantially rectangular plate shape. On the front side, for example, a display pattern composed of a pictogram imitating a person is formed by printing, and light is irradiated from the back side. As a result, the display pattern is lit to perform display.

  Locking protrusions 41 are provided at two upper and lower portions on the left and right side edges of the back surface of the main body 40, respectively. The shape of the locking projection 41 as viewed from above is substantially L-shaped. The tip of the locking projection 41 at the left edge protrudes to the left, and the tip of the locking protrusion 41 at the right edge protrudes to the right. When the display portion 4 a is arranged at the opening of the apparatus main body 10 so that the locking protrusion 41 is positioned above the corresponding locking piece 14, and is slid downward, the display protrusion 4 a When the locking piece 14 is locked, it is attached to the apparatus main body 10. In this attached state, the locking projection 41 abuts on the lower side of the corresponding locking piece 14, so that the downward movement of the display unit 4 is restricted, and the locking projection 41 corresponds to the corresponding locking piece. The movement of the display unit 4 to the front side is restricted by abutting on the vertical side of 14.

  Further, on the back surface of the main body 40, a projection 42 (shape portion) having a triangular shape in a side view is provided at a portion facing the lighting device 3. The protrusion 42 is for indicating the type of the display unit 4, and the protrusion 42 is not provided on the back surface of the display unit 4 b, and is a flat surface.

  As shown in the block diagram of FIG. 2, the lighting device 3 includes a lighting circuit unit 31, a lighting state setting unit (consisting of a recognition unit 32 and a setting unit 33), a power failure detection unit 34, and a charge / discharge unit 35. These circuit parts are housed in a box-shaped case 30 and configured.

  The lighting circuit unit 31 lights the light emitting unit 2 by receiving power supply from the commercial AC power source 6 that is a normal power source or the standby power source 5 that is a battery housed in the apparatus main body 10.

  The recognition unit 32 includes a micro switch 36 in which an operation lever is disposed at a portion facing the protrusion 42 on the front surface of the case 30, and the micro switch 36 depends on whether the operation lever is pressed by the protrusion 42 depending on the type of the display unit 4. ON / OFF of the contact is switched. Here, as shown in FIGS. 3A and 3B, when the display unit 4a having the protrusion 42 is attached to the apparatus main body 10, the operation lever of the micro switch 36 is pushed by the protrusion 42, and the micro switch The contact state of 36 is reversed. On the other hand, as shown in FIGS. 4A and 4B, when the display unit 4b without the projection 42 is attached to the apparatus main body 10, the operation lever of the micro switch 36 is not pushed. Contact state is not reversed.

  The setting unit 33 determines the type of the display unit 4 based on the recognition result of the recognition unit 32, that is, on / off of the contact of the micro switch 36. The setting unit 33 receives at least one of a lighting state in which the light source 2 is lit by receiving power from the commercial AC power source 6 and a lighting state in which the light source 2 is lit by receiving power from the standby power source 5. One of the lighting states is set according to the type of the display unit 4. Here, the recognition unit 32 and the setting unit 33 constitute a lighting state setting unit.

  The power failure detection unit 34 detects whether or not a power failure occurs by comparing the power supply voltage of the commercial AC power supply 6 with a predetermined threshold value.

  When the commercial AC power supply 6 is being supplied, the charging / discharging unit 35 receives power from the commercial AC power supply 6 to charge the standby power supply 5, and when the power failure detection unit 34 detects a power failure, the charge / discharge unit 35 is discharged from the standby power supply 5. Then, the lighting circuit unit 31 is supplied with power.

  Each part of the guide light 1 has the above-described configuration, and the guide light 1 is constructed on the ceiling as follows. The installer first fixes the mounting bracket at a predetermined position of the ceiling material, and passes the power line wired on the back side of the ceiling material through the hole of the ceiling material and the mounting bracket and the hole formed by opening the knockout 12. Introduced inside the apparatus main body 10. Next, the installer passes the fixing screw through the hole formed by opening the knockout 13, and screws the fixing screw into the mounting bracket to fix the apparatus main body 10 to the ceiling material. Further, the installer connects the power line introduced into the apparatus main body 10 to a terminal block (not shown) of the lighting device 3. Next, the installer arranges the display unit 4 (any one of the display units 4a and 4b) in the opening of the apparatus main body 10 so that the locking projection 41 is positioned above the corresponding locking piece 14, and this The locking projection 41 is locked with the locking piece 14 by sliding the display unit 4 downward. With the display unit 4 held in the apparatus main body 10 in this way, the builder constructs the light emitting unit 2 to the apparatus main body 10 from the front with the guide rod 22 and the insertion terminal 23 facing the apparatus main body 10 side. The guide rod 22 and the insertion terminal 23 are inserted and connected to the insertion port 15 respectively. At this time, the light emitting unit 2 is mechanically held with respect to the apparatus main body 10 and the light emitting unit 2 and the lighting device 3 are electrically connected to complete the construction of the guide lamp 1. Note that when the light emitting unit 2 is attached to the apparatus main body 10, the display unit 4 cannot be slid upward, so that the display unit 4 is not detached from the apparatus main body 10.

  Next, operation | movement of the guide light 1 of this embodiment is demonstrated. In a state in which the commercial AC power supply 6 that is a regular power supply is supplied, the lighting circuit unit 31 receives power supply from the commercial AC power supply 6 to turn on the light emitting unit 2 and perform a normal display. Further, the charging / discharging unit 35 charges the standby power source 5 made of a battery while the commercial AC power source 6 is energized. On the other hand, when a power failure of the commercial AC power supply 6 occurs, the power failure detection unit 34 detects the power failure and outputs a detection signal to the charging / discharging unit 35, and the charging / discharging unit 35 discharges from the standby power source 5 to the lighting circuit unit 31. Let the power supply. Thus, at the time of a power failure of the commercial AC power supply 6, the lighting circuit unit 31 receives power supply from the standby power supply 5 to turn on the light emitting unit 2 to display the power failure. That is, the lighting circuit unit 31 is supplied with power from the commercial AC power supply 6 or the standby power supply 5 to turn on the light emitting unit 2, and causes the display unit 4 to perform normal display or power outage display.

  Here, the setting unit 33 displays at least one of the lighting state when power is supplied from the commercial AC power source 6 and the lighting state when power is supplied from the standby power source 5 by the recognition unit 32. This is set based on the type of part 4.

  For example, when it is desired to change the brightness of the light emitting unit 2 according to the type of the display unit 4 when power is supplied from the commercial AC power source 6 that is a regular power source, the setting unit 33 is configured according to the type of the display unit 4. What is necessary is just to change the output of the lighting circuit part 31 at the time of the electric power supply from a common power supply. FIG. 5 shows a setting example in which the lighting state at the time of power supply from the commercial AC power supply 6 is set according to the type of the display unit 4. For example, in the case of the display unit 4 a having the protrusions 42, the light output is set to L1. In the case of the display unit 4b having no protrusion 42, the light output is set to L2 which is darker than L1. Thereby, even when it is desired to change the brightness of the light emitting unit 2 between the two types of display units 4 a and 4 b, the setting unit 33 sets the lighting state at the time of power supply from the normal power supply according to the type of the display unit 4. By doing so, it is possible to deal with both the display units 4a and 4b without changing the lighting device 3.

  Further, when it is desired to change the blinking frequency of the light emitting unit 2 according to the type of the display unit 4 at the time of power supply from the standby power supply 5 (at the time of power failure), the setting unit 33 What is necessary is just to change the frequency which the lighting circuit part 31 blinks the light emission part 2 at the time of the electric power supply from the standby power supply 5. FIG.

  FIG. 6 is a setting example in which the lighting state when power is supplied from the standby power supply 5 is set according to the type of the display unit 4. The setting unit 33 always turns on the light emitting unit 2 as shown in FIG. 6A when the display unit 4a having the projections 42 is mounted, and when the display unit 4b without the projections 42 is mounted as shown in FIG. The lighting state is set so that the light emitting unit 2 blinks at a predetermined frequency (for example, 2 Hz) as shown in b). Thus, even when it is desired to switch between the two types of display units 4a and 4b to be lit or blinked, the setting unit 33 sets the lighting state when power is supplied from the standby power supply 5 according to the type of the display unit. Thus, one lighting device 3 can correspond to both the display units 4a and 4b.

  Further, there are cases where it is desired to change the blinking frequency for blinking the light emitting unit 2 according to the type of the display unit 4 when power is supplied from the standby power supply 5 (that is, during a power failure). For example, in the case of the guide light 1 installed at an evacuation exit, the fire fighting law stipulates that the blinking frequency is a relatively high frequency (for example, 2 Hz) so that the display unit 4 is conspicuous. On the other hand, in the case of the guide light 1 installed in the passage, it is important to be able to reliably identify the pattern indicating the evacuation direction (for example, the direction of the arrow). It is conceivable to increase the lighting time per turn. Accordingly, the display unit 4a having the protrusion 42 is used for the guide light 1 installed at the evacuation exit, and the display unit 4b having no projection 42 is used for the guide light 1 installed in the passage. The blinking frequency at the time of power supply from the standby power supply 5 is set according to the determination result of the unit 32. That is, when the recognition unit 32 identifies the display unit 4a, the setting unit 33 sets the light emitting unit 2 to 2 Hz (T1 = about 0.5) when power is supplied from the standby power supply 5, as shown in FIG. The lighting state of the lighting circuit unit 31 is set so as to blink in seconds. When the recognition unit 32 identifies the display unit 4b, the setting unit 33 sets the light emitting unit 2 to 1 Hz (T2 = about 1 second) when power is supplied from the standby power supply 5, as shown in FIG. 6C. The lighting state of the lighting circuit unit 31 is set so as to blink. Thereby, when the power from the standby power supply 5 is supplied, the presence of the display unit 4a is easily noticeable in the guide lamp 1 installed at the evacuation exit by blinking the light emitting unit 2 at 2 Hz. In addition, when the power is supplied from the standby power source 5, the guide lamp 1 installed in the passage can lengthen the lighting time of the light emitting unit 2 by flashing the light emitting unit 2 at 1 Hz, and the display unit 4b Since the pattern can be easily identified, the evacuation direction can be reliably determined.

  As described above, the guide lamp 1 (display device) of the present embodiment includes the light emitting unit 2, the display unit 4, the lighting circuit unit 31, the device body 10, and the lighting state setting unit (the recognition unit 32 and the setting unit). 33). The display unit 4 has a pattern on the front surface and performs display by transmitting the irradiation light from the light emitting unit 2 forward. The lighting circuit unit 31 lights the light emitting unit 2 by receiving power supply from a normal power source or a standby power source. The device body 10 holds the light emitting unit 2, the display unit 4, and the lighting device 3 (including the lighting circuit unit 31) with the front surface of the display unit 4 exposed. The lighting state setting unit (recognizing unit 32) determines the type of the display unit 4. The lighting state setting unit (setting unit 33) includes a lighting state in which the lighting circuit unit 31 is supplied with power from the normal power source and lights up the light emitting unit 2, and a lighting circuit unit 31 is supplied with power from the standby power source. Among the lighting states in which the light emitting unit 2 is lit, at least one of the lighting states is set according to the type of the display unit 4.

  Thereby, depending on the type of the display unit 4, for example, the content to be displayed, the usage, and the installation location, the lighting state setting unit turns on the lighting state when supplying power from the normal power source and lighting when supplying power from the standby power source. Among the states, at least one of the lighting states can be changed. Therefore, even when it is desired to change the lighting state among the plurality of types of display units 4, the same lighting circuit unit 31 can be shared, so that the types of lighting circuit units 31 (that is, the lighting device 3) can be reduced. As the number of types of lighting circuit unit 31 increases, it takes time to select the type of lighting circuit unit 31 to be used, and it is necessary to prepare a large number of types of stock. In the present embodiment, the lighting circuit unit 31 can be shared by a plurality of types of display units. Therefore, the types of lighting circuit units 31 can be reduced, and the cost can be reduced by integrating the types of lighting circuit units 31.

  In the present embodiment, a lighting state setting unit (consisting of a recognition unit 32 including a micro switch 36 and a setting unit 33) and a lighting circuit unit 31 are housed in the case 30 of the lighting device 3. That is, in this embodiment, the lighting state setting unit is provided integrally with the lighting circuit unit 31.

  Thereby, the number of parts can be reduced and the labor of assembling can be simplified.

  Moreover, in this embodiment, the display part 4 is provided with the shape part (protrusion 42) from which a shape differs according to a classification, and a lighting state setting part (microswitch 36 which comprises the recognition part 32) is a contact state with a shape part. The type of the display unit 4 is determined based on the above.

  Thereby, since the recognition unit 32 of the lighting state setting unit can be realized by the micro switch 36 or the like, the cost is lower than when the identification information is read from the ID tag provided on the display unit 4, and the display unit 4 Less power is required to determine the type.

  It should be noted that the projection 42 and the microswitch 36 driven by the projection 42 are used for locking the display unit 4 and the apparatus main body 10 so that the contact state with the shape unit is not easily changed by warping or deformation of the display unit 4. It is preferable to arrange in the vicinity of the provided locking protrusion 41 and the locking piece 14.

(Embodiment 2)
A second embodiment will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the component which is common in Embodiment 1, and the description is abbreviate | omitted.

  In the first embodiment described above, the display unit 4 is provided with a shape part (projection 42) having a different shape depending on the type, and the recognition unit 32 determines the type of the display part 4 based on the contact state with the shape part. . On the other hand, in this embodiment, an ID tag 43 (storage unit) in which identification information indicating a type is registered in advance is attached to each display unit 4. On the other hand, the lighting device 3 is provided with a reader 37 that reads identification information stored in the ID tag 43 by performing short-range wireless communication (RFID) using radio waves or electromagnetic fields with the ID tag 43. It has been. When the display unit 4 is attached to the apparatus main body 10 as shown in FIG. 8, the ID tag 43 is arranged in a range where communication with the reader 37 is possible, so that the reader 37 can read the identification information from the ID tag 43. it can. Here, in this embodiment, the recognition unit 32 is configured by the reader 37.

  Then, as in the first embodiment, the setting unit 33 turns on the light emitting unit 2 by receiving power from the commercial AC power supply 6 and lighting the light emitting unit 2 and receiving power from the standby power supply 5. At least one of the lighting states is set based on the identification information read by the recognition unit 32. Accordingly, the lighting state in at least one of the power supply from the normal power supply and the power supply from the standby power supply can be set according to the type of the display unit 4. Therefore, even when the lighting state of the light emitting unit 2 is different depending on the type of the display unit 4, the same lighting circuit unit 31 can cope with the lighting circuit unit 31 by sharing the lighting circuit unit 31 with a plurality of types of display units 4. 31 (that is, the lighting device 3) can be reduced, and the cost can be reduced by integrating the types of the lighting circuit section 31. When there are a plurality of types of lighting circuit units 31, it is necessary to select the type of the lighting circuit unit 31 according to the type of the display unit 4, but the lighting circuit unit 31 is selected by a plurality of types of display units 4. Since they are shared, the operation of selecting the lighting circuit unit 31 (lighting device 3) becomes unnecessary. In addition, since it is not necessary to procure and store a plurality of types of lighting devices 3, the overall cost can be reduced.

  As described above, the guide lamp 1 (display device) of the present embodiment includes the light emitting unit 2, the display unit 4, the lighting circuit unit 31, the device body 10, and the lighting state setting unit (the recognition unit 32 and the setting unit). 33). The display unit 4 has a pattern on the front surface and performs display by transmitting the irradiation light from the light emitting unit 2 forward. The lighting circuit unit 31 lights the light emitting unit 2 by receiving power supply from a normal power source or a standby power source. The device body 10 holds the light emitting unit 2, the display unit 4, and the lighting device 3 (including the lighting circuit unit 31) with the front surface of the display unit 4 exposed. The lighting state setting unit (recognizing unit 32) determines the type of the display unit 4. The lighting state setting unit (setting unit 33) includes a lighting state in which the lighting circuit unit 31 is supplied with power from the normal power source and lights up the light emitting unit 2, and a lighting circuit unit 31 is supplied with power from the standby power source. Among the lighting states in which the light emitting unit 2 is turned on, at least one of the lighting states is set according to the type.

  Thereby, according to the type of the display unit 4, that is, the content displayed on the display unit 4, the usage, and the installation location, the lighting state setting unit performs the lighting state when supplying power from the normal power source and the power from the standby power source. Among the lighting states at the time of supply, at least one of the lighting states can be changed. Therefore, the same lighting circuit unit 31 can be shared even when it is desired to change the lighting state among a plurality of types of display units 4, so that the types of lighting circuit units 31 can be reduced. As the number of types of lighting circuit unit 31 increases, it takes time to select the type of lighting circuit unit 31 to be used, and it is necessary to prepare a large number of types of stock. By sharing the lighting circuit unit 31 among a plurality of types of display units, the types of the lighting circuit unit 31 can be reduced, and the cost can be reduced as a whole.

  In the present embodiment, a lighting state setting unit (consisting of a recognition unit 32 including a reader 37 and a setting unit 33) and a lighting circuit unit 31 are housed in the case 30 of the lighting device 3. That is, in this embodiment, the lighting state setting unit is provided integrally with the lighting circuit unit 31.

  Thereby, the number of parts can be reduced and the labor of assembling can be simplified.

  Moreover, in this embodiment, the memory | storage part (ID tag 43) which memorize | stores the identification information which shows the classification of the display part 4 is attached to the display part 4, and a lighting state setting part displays display by reading identification information from a memory | storage part. The type of part 4 is determined.

  When the display unit 4 is provided with a shape part having a different shape according to the type as in the first embodiment, the shape of the shape part becomes complicated and the number of microswitches needs to be increased as the number of types of the display part 4 increases. However, by storing the identification information in the storage unit, it is possible to easily cope with a case where there are many types of the display unit 4.

  Note that the timing at which the reader 37 reads the identification information from the ID tag 43 provided on the display unit 4 is limited to, for example, the timing when the power is turned on during initial construction or when the operation control is performed and the normal control mode is restored. It is preferable that the power required for the reader 37 to read the identification information from the ID tag 43 can be reduced.

  In the present embodiment, the recognition unit 32 reads the identification information from the storage unit (ID tag 43) provided in the display unit 4 in a non-contact manner, but is in electrical contact with the display unit 4 and the apparatus main body 31. It is also possible to provide a contact point for the recognition unit 32 to read the identification information from the storage unit through the contact point.

1 Guide light (display device)
2 light emitting unit 3 lighting device 4a, 4b display unit 10 device body 31 lighting circuit unit 32 recognition unit (lighting state setting unit)
33 Setting section (lighting state setting section)
36 Microswitch 37 Leader 42 Protrusion (shape part)
43 ID tag (storage unit)

Claims (4)

A light emitting unit;
A display unit having a pattern on the front surface and performing display by transmitting the irradiation light from the light emitting unit forward;
A lighting circuit unit for lighting the light emitting unit by receiving power supply from a normal power source or a standby power source;
An apparatus main body for holding the light emitting unit, the display unit, and the lighting circuit unit in a state where the front surface of the display unit is exposed;
The type of the display unit is determined, the lighting circuit unit receives a power supply from the normal power source and turns on the light emitting unit, and the lighting circuit unit receives the power supply from the standby power source and emits the light. A display device comprising: a lighting state setting unit that sets at least one of the lighting states among the lighting states that light the unit according to the type.   The display device according to claim 1, wherein the lighting state setting unit is provided integrally with the lighting circuit unit.   The said display part is provided with the shape part from which a shape differs according to a classification, The said lighting state setting part discriminate | determines the classification of the said display part based on a contact state with the said shape part. Or the display apparatus in any one of 2. A storage unit for storing identification information indicating the type of the display unit is attached to the display unit,
The display device according to claim 1, wherein the lighting state setting unit determines the type of the display unit by reading the identification information from the storage unit.

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