JP2013145645A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of making a panel unit hardly damage with shocks while removing shaking of the panel unit.SOLUTION: The display device 1 includes a holding section 2 mounted on a ceiling, and the panel unit 3 formed at a rectangular plate shape, wherein an upper end is fixed so as to move against the holding section 2. The panel unit 3 includes an EL panel 30 as a light source, and has a display surface 31 as at least one surface. The EL panel 30 of the panel unit 3 has flexibility in a thickness direction, and is formed to be flexible so as to set the shocks free when the shocks are added to the panel unit by making an object come in contact (collided) with the panel unit. Therefore, the panel unit 3 makes the display surface 31 maintain at a flat state at a normal time, and can relieve the shocks by elastically deforming so as to bend in a thickness direction of the EL panel 30 when receiving the shocks.

Description

  The present invention relates to a display device having a display panel attached to a ceiling or a wall, such as a guide light that indicates the location of an evacuation exit such as a building or the direction of evacuation in an emergency.

  A general guide light (guide light device) includes a display panel (display board) on which a symbol indicating an evacuation direction or the like is printed on the surface, and displays a symbol by irradiating light from behind on the display panel. (For example, refer to Patent Document 1). The guide lamp described in Patent Document 1 uses a cold cathode fluorescent lamp as a light source for irradiating light to the display panel, and has a light guide plate overlaid behind the display panel, and the light source plate is connected to the light source plate from one end side of the light guide plate. The symbol is illuminated by entering the emitted light.

  By the way, a general guide light is used by attaching a panel unit (display unit) in which a light guide plate is superimposed on a display panel to a ceiling or wall of a building. For example, the panel unit is configured such that one end (upper end) of the panel unit is held by the holding unit so as to be suspended from the lower surface of the holding unit (equipment main body) embedded in the ceiling with a built-in light source. It is attached to the ceiling (for example, refer to Patent Document 2).

  In such a configuration in which one end portion of the rigid panel unit is held by the holding portion, the holding portion does not completely fix the panel unit so that the impact received by the panel unit can be released, but the panel has a certain clearance. Many structures are used to hold the unit. In other words, when an impact is applied to an object from the panel unit, the guide light can be released by the clearance with the holding unit fixed at a fixed position so that the impact can be released. Breakage of the holding part can be prevented.

JP 2007-193981 A JP 2007-304658 A

  However, as described above, in a display device having a structure in which the holding unit holds the panel unit with a clearance, the panel unit may rattle against the holding unit due to, for example, wind or vibration. Etc. may be a problem.

  The present invention has been made in view of the above reasons, and an object of the present invention is to provide a display device that is less likely to be damaged even if the panel unit receives an impact while eliminating the shakiness of the panel unit.

  The display device of the present invention includes a holding unit attached to a construction surface and a panel unit including an EL panel as a light source and having at least one surface as a display surface, and the panel unit can be arranged in a thickness direction of the EL panel. It has flexibility and is characterized in that one end is fixed to the holding part.

  In this display device, it is preferable that the panel unit further includes an elastic reinforcing member attached to a peripheral portion of the EL panel.

  In this display device, the reinforcing member is more preferably made of a material having a higher elastic modulus than the EL panel.

  In this display device, the EL panel has a rectangular plate shape and is fixed on one side to the holding portion, and the reinforcing member is a pair adjacent to one side fixed to the holding portion in the EL panel. It is more desirable to be provided on each side.

  In the present invention, the panel unit has flexibility in the thickness direction of the EL panel, and one end is fixed to the holding portion. There is an advantage that even if it is received, it is not easily damaged.

1 is a perspective view illustrating a configuration of a display device according to Embodiment 1. FIG. 6 is a perspective view illustrating another configuration of the display device according to Embodiment 1. FIG. The structure of the display apparatus which concerns on Embodiment 2 is shown, (a) is a perspective view, (b) is sectional drawing of the principal part. 10 is a perspective view showing another configuration of the display device according to Embodiment 2. FIG.

  In each of the following embodiments, a guide light installed in the vicinity of an evacuation exit is shown as an example of a display device so as to indicate the location of an evacuation exit of a building as a guide light, but the display device is not limited to this example, A guide light whose direction of evacuation is indicated by an arrow or a device other than a guide light may be used.

(Embodiment 1)
As shown in FIG. 1, the display device 1 of the present embodiment includes a holding unit 2 that is attached to a construction surface (ceiling, wall, etc.) of a building, and a panel unit 3 that is plate-like and held by the holding unit 2. And. The panel unit 3 includes an EL (ElectroLuminescence) panel 30 as a light source. The display unit 31 emits light when the EL panel 30 is turned on with at least one surface as the display surface 31. Below, the case where the display device 1 is attached to the ceiling of a building will be described as an example, and the upper and lower sides of the display device 1 in the attached state will be described as being up and down.

  In the present embodiment, the panel unit 3 is the EL panel 30 itself, and one surface (front surface) of the EL panel 30 is used as the display surface 31. That is, when the EL panel 30 is turned on, the panel unit 3 emits light from the display surface 31 and the display surface 31 emits light. Note that the EL panel 30 may be either an organic EL or an inorganic EL.

  The holding unit 2 includes a lighting device (not shown) for lighting the panel unit (EL panel) 3 and a secondary battery (not shown) in a rectangular parallelepiped housing 20. The holding part 2 is attached to the ceiling with an attachment screw (not shown) in a state where a rectangular upper surface of the casing 2 is in contact with the ceiling. The panel unit 3 is held by the holding unit 2 so as to hang from the lower surface of the housing 20 of the holding unit 2.

  The lighting device is connected to a commercial power system as a regular power source, and the secondary battery is charged by receiving power from the commercial power system when the commercial power system is energized (hereinafter referred to as “normal”). . The lighting device turns on the EL panel 30 by supplying power from the commercial power system in normal times, and supplies power from a secondary battery as an emergency power source during a power failure of the commercial power system (hereinafter referred to as “emergency”). The EL panel 30 is turned on. As a result, the display device 1 can cause the display surface 31 to emit light not only in normal times but also in an emergency when the commercial power system has a power failure. When the building in which the display device 1 is used is equipped with an emergency power supply that supplies power to the display device 1 in the event of a power failure in the commercial power system, the secondary battery of the holding unit 2 is omitted and the lighting device is in an emergency. The EL panel 30 may be turned on by receiving power supply from the emergency power supply.

  Hereinafter, the panel unit 3 will be described in more detail.

  The panel unit 3 is formed in a rectangular plate shape, and is fixed so that the upper end portion thereof does not move with respect to the holding portion 2. That is, one end (upper end) of the panel unit 3 is completely fixed to the holding unit 2.

  Here, the panel unit 3 has a basic structure of a general EL panel in which a light emitting layer (not shown) is sandwiched between a pair of electrode layers (not shown). Of the pair of electrode layers, at least the electrode layer on the display surface 31 side is made of a transparent electrode such as ITO (Indium Tin Oxide). Thereby, as for the panel unit 3, when a voltage is applied to a pair of electrode layer from a lighting device, a light emitting layer light-emits. Since the basic structure of the EL panel is well known, detailed description is omitted here. Note that the EL panel 30 of the panel unit 3 may be a double-sided light emission type EL panel 30 in which the light of the light emitting layer can be taken out from both the front surface and the back surface by forming both electrode layers from transparent electrodes.

  Furthermore, the panel unit 3 has a protective film (not shown) made of a transparent material so as to overlap each electrode layer from the side opposite to the light emitting layer in each electrode layer. That is, the basic structure of the EL panel in which the light emitting layer is sandwiched between the pair of electrode layers is sandwiched between the pair of protective films to constitute the panel unit 3. Here, the panel unit 3 uses the surface of the protective film on the front side as the display surface 31, and a symbol (symbol) indicating the location of the evacuation exit is drawn in green on the display surface 31. Thereby, when the light emitting layer emits white light, the panel unit 3 emits light from the light emitting layer through the electrode layer from the display surface 31, the design portion of the display surface 31 is green, and the other transparent portions are white. And the design of the display surface 31 is displayed. If the EL panel 30 is a double-sided light emitting type, not only the front-side protective film but also the surface of the back-side protective film serves as a display surface, so that light from the light-emitting layer is emitted from both sides of the panel unit 3. .

  By the way, in the panel unit 3, the EL panel (light emitting layer, electrode layer, protective film) 30 has flexibility in its thickness direction, and when an impact is applied due to contact (collision) of some object, It is configured flexibly so that the impact can be released. Specifically, the panel unit 3 is formed by using an elastic material such as a plastic film for the electrode layer and the protective film so that the panel unit 3 bends in the thickness direction of the EL panel 30 when an external force is applied. Elastic deformation is possible. For this reason, the panel unit 3 normally maintains the display surface 31 in a flat state. When the panel unit 3 receives an impact, the panel unit 3 is deformed so as to bend in the thickness direction of the EL panel 30 and then releases the impact. It returns to a flat state due to the elasticity of. In FIG. 1, the panel unit 3 that is bent in the thickness direction is indicated by a two-dot chain line.

  As described above, the display device 1 has the flexibility that the panel unit 3 itself has, so that the impact received by the panel unit 3 while one end of the panel unit 3 is completely fixed to the holding unit 2. The panel unit 3 and the holding part 2 can be prevented from being damaged. That is, when the display device 1 is attached to the ceiling, even if a human hand hits the lower end of the panel unit 3, for example, the panel unit 3 bends and the impact is interfered. It will not be transmitted to the upper end of.

  According to the display device 1 of the present embodiment described above, the panel unit 3 has flexibility in the thickness direction of the EL panel 30, and one end of the panel unit 3 is fixed to the holding unit 2. The impact received by the unit 3 can be released by the deformation of the panel unit 3. That is, the display device 1 can release an impact by elastically deforming the panel unit 3 so that the panel unit 3 bends in the thickness direction of the EL panel 30 when an object is brought into contact with the panel unit 3 and an impact is applied. In addition, breakage of the holding portion 2 can be prevented.

  Further, in the display device 1, since one end portion (upper end portion) of the panel unit 3 is completely fixed to the holding portion 2, the panel unit 3 does not move relative to the holding portion 2. . Therefore, according to the above configuration, for example, the panel unit 3 rattles against the holding portion 2 due to wind or vibration of the construction surface, but no rattling noise is generated, and the display device is highly reliable and high quality. 1 can be provided.

  In general, in order to improve the aesthetic appearance (design) of the display device 1, it is desirable to reduce the dimension in the thickness direction of the panel unit 3, but in the panel unit 3, the dimension in the thickness direction is desirable. When it becomes smaller, the strength in the thickness direction is lowered. Since the display device 1 of the present embodiment is configured so that the panel unit 3 can be deformed in the thickness direction, the display surface can be more effectively displayed while improving the design by reducing the dimension of the panel unit 3 in the thickness direction. 31 can be protected from impact.

  In the present embodiment, only the green part of the symbol is drawn on the display surface 31. However, the present invention is not limited to this configuration. For example, both the white part and the green part of the symbol may be drawn. Further, the display device 1 divides the light emitting region of the EL panel 30 into a region that shines green and a region that shines white, and each lighting region is lit by a lighting device, whereby a green portion and a white portion are displayed on the display surface 31. You may be comprised so that the pattern which consists of may be displayed. In this case, it is not necessary that a symbol is drawn on the display surface 31, and the symbol can be displayed only when the EL panel 30 is lit.

  By the way, the display device 1 is not limited to the direct mounting type in which the holding unit 2 is attached to the ceiling in a state where the upper surface is in contact with the ceiling, but an embedded type in which the holding unit 2 is embedded in the ceiling as shown in FIG. It may be. That is, in the display device 1 of FIG. 2, the holding unit 2 is installed on the ceiling panel 4 (ceiling back) constituting the ceiling, and the panel unit 3 hanging from the lower surface of the holding unit 2 penetrates the ceiling panel 4. It is attached so as to be exposed on the indoor side (below the ceiling panel 4). In the configuration of FIG. 2, the projection amount of the display device 1 from the ceiling panel 4 to the indoor side can be suppressed to be small, and the holding unit 2 is installed at a position that cannot be seen from the indoor side. The shine improves.

(Embodiment 2)
The display device 1 of the present embodiment is different from the display device 1 of the first embodiment in that the panel unit 3 includes a reinforcing member 32 that is attached to the peripheral portion of the EL panel 30 as shown in FIG. Below, the same code | symbol is attached | subjected to the structure similar to Embodiment 1, and description is abbreviate | omitted suitably.

  The reinforcing member 32 is made of an elastic material such as urethane resin, and excludes one end (upper end) fixed to the holding portion 2 of the rectangular EL panel 30 as shown in FIG. It is provided over substantially the entire circumference of the outer periphery. Here, the reinforcing member 32 is formed in a C-shaped cross section by forming a groove 320 along the longitudinal direction as shown in FIG. 3B, and the peripheral portion of the EL panel 30 is in the groove 320. Is attached to the peripheral portion of the EL panel 30 in such a manner that fits. As a result, the peripheral portion of the EL panel 30 is covered by the reinforcing member 32 from the front surface to the back surface.

  According to the above configuration, the display device 1 can adjust the elasticity and strength of the panel unit 3 as a whole with the reinforcing member 32, and even if the EL panel 30 itself does not have sufficient elasticity and strength, the panel The unit 3 as a whole can achieve desired elasticity and strength. That is, since the display device 1 uses the EL panel 30 that is insufficient in elasticity and strength by itself, the EL panel 30 is reinforced by the reinforcing member 32, so that the panel unit 3 as a whole has desired elasticity and strength. It can be secured. In other words, the display device 1 can ensure the desired elasticity and strength of the entire panel unit 3 by setting the material and thickness of the reinforcing member 32 regardless of the elasticity and strength of the EL panel 30. Increased freedom of choice.

  Here, in this embodiment, the reinforcing member 32 is formed of a material having a higher elastic modulus than the EL panel 30. The elastic modulus here is related to flexibility, and means that the higher the elastic modulus is, the more difficult it is to bend. In short, the reinforcing member 32 is made of a material that is less likely to bend than the EL panel 30, and the deformation amount (deflection amount) of the panel unit 3 when an impact is applied to the panel unit 3 is defined by the reinforcing member 32. Therefore, the display device 1 can limit the deformation amount of the panel unit 3 as a whole when an impact is applied by the reinforcing member 32, and the EL panel 30 is excessively deformed (bent). There is an advantage that can be prevented from being damaged.

  Further, in the example of FIG. 3, the reinforcing member 32 is provided over substantially the entire circumference of the outer peripheral edge excluding one end fixed to the holding part 2 among the peripheral parts of the EL panel 30. There is also a function of protecting the EL panel 30 itself from an impact on the periphery. In addition, it is not essential that the reinforcement member 32 has constant elasticity and strength throughout the whole, and at least one of elasticity and strength may be individually set for each part.

  As another example of the present embodiment, as shown in FIG. 4, the reinforcing member 32 may be provided only on a pair of sides adjacent to one side fixed to the holding portion 2 in the EL panel 30. . That is, in a state where the display device 1 is attached to the ceiling, the reinforcing member on the lower side of the EL panel 30 is omitted, and the reinforcing member 32 is provided only on a pair of side sides adjacent to the upper side of the EL panel 30.

  According to the configuration of FIG. 4, the panel unit 3 is resistant to deformation in which the lower side of the EL panel 30 is bent, and the reinforcing member 32 hardly acts on the deformation in which the side of the EL panel 30 is bent. The reinforcing member 32 acts to reinforce the EL panel 30. Therefore, in the case where an impact is applied to the panel unit 3 over substantially the entire area of the display surface 30 in the lateral direction, the reinforcing member 32 is provided only on each side of the EL panel 30 as shown in FIG. However, the panel unit 3 can be effectively protected from impact. As described above, the display member 1 is provided with the reinforcing member 32 in an appropriate position according to the range in which the panel unit 3 is expected to receive an impact, thereby minimizing the necessary amount of the reinforcing member 32 while minimizing the necessary amount of the reinforcing member 32. 3 can be effectively protected from impact.

  By the way, when the panel unit 3 includes the reinforcing member 32, the holding unit 2 may hold the EL panel 30 via the reinforcing member 32 instead of directly holding the EL panel 30. That is, in the display device 1, the EL panel 30 is held by the reinforcing member 32, and one end (upper end) of the reinforcing member 32 is fixed to the holding unit 2, so that one end of the panel unit 3 is held by the holding unit 2. The structure fixed to may be sufficient. In this case, since the EL panel 30 is not directly fixed to the holding unit 2, stress is concentrated on the connection portion of the EL panel 30 with the holding unit 2 when the panel unit 3 is subjected to an impact and the EL panel 30 is bent. Never do.

  Other configurations and functions are the same as those of the first embodiment.

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Holding part 3 Panel unit 30 EL panel 31 Display surface 32 Reinforcement member

Claims (4)

  A holding unit attached to the construction surface, and a panel unit including an EL panel as a light source and having at least one surface as a display surface, the panel unit having flexibility in a thickness direction of the EL panel, The display device is characterized in that a portion is fixed to the holding portion.   The display device according to claim 1, wherein the panel unit further includes a reinforcing member attached to a peripheral portion of the EL panel and having elasticity.   The display device according to claim 2, wherein the reinforcing member is made of a material having a higher elastic modulus than the EL panel. The EL panel has a rectangular plate shape and is fixed on one side to the holding portion,
The display device according to claim 2, wherein the reinforcing member is provided on each of a pair of sides adjacent to a side fixed to the holding portion in the EL panel.

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