JP2010117568A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device by which the driver of a vehicle can recognize signals as a normal display without feeling any incongruity during the daytime or under traffic illumination at night, and by which he/she can easily recognize them even at unilluminated dark places or during the power outage at night. <P>SOLUTION: The display 1 is composed of a light storage 2 to store the light emitted from the light source, a display part 3 to display signs, and a reflector 4 to reflect the incident light to feed it to the light storage 2 as the reflected light. It simultaneously feeds the incident light and the reflected light to the light storage 2 to store them as the stored light, and displays the signs on the display part 3 by radiating the light stored in the light storage 2 when the incident light is turned off. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a road sign such as a road regulation sign, a display sign, a warning sign, an instruction sign, a warning sign such as a guidance sign or a tsunami sign at the time of a disaster, a river water level sign, a construction sign, etc. It is about.

Conventionally, as shown in Patent Document 1, when a reflective sheet for display for displaying a road sign or the like is pasted on a reflective sheet for background and illuminated, the road sign or the like can be identified. A display device has been proposed in which a light-storing material-containing resin body that accumulates illuminated light on a sheet and stores the light is arranged and fixed so that road signs and the like can be identified by the stored light even when illumination is no longer applied. . FIG. 3 is a cross-sectional view for explaining a conventional display device.
Hereinafter, a conventional example will be described in detail with reference to FIG.

  In FIG. 3, a conventional display device 101 includes an aluminum planar base material 102, a white background reflection sheet 103 to be applied over the entire surface of the base material 102, and a background reflection sheet 103. A reflective sheet 104 of a predetermined color that is pasted so that a portion is exposed, and a phosphorescent material that is arranged and fixed over the entire surface on the exposed surface without the reflective sheet 104 being pasted on the reflective sheet 103 for the background And a contained resin body 105.

As the background reflection sheet 103 and the display reflection sheet 104, those having a general retroreflection function are used. For example, a lens-type retroreflection element composed of a microsphere lens such as glass beads and a metal film light reflection layer, A cube-corner retroreflective element or the like that is disposed so that the surfaces to be faced with each other at an angle of approximately 90 degrees is used.

  Next, the usage state of the display device 101 will be described. In the daytime, the display device 101 presents a sign of a display pattern of a predetermined color made of the display reflection sheet 104 on the background made of the white background reflection sheet 103 due to external light. At that time, a large number of phosphorescent material-containing resin bodies 105 exist in the form of dots on the reflective sheet 103 for background, but since they have transparency, they transmit light, and furthermore, they have a large number of dots in the form of discontinuities. With the arrangement, the reflected light from the background reflection sheet 103 is diffused in all directions with the front as the center.

At night, when the display device 101 is illuminated by illumination light from a nearby vehicle, lighting fixture, or the like, the display reflection sheet 104 is formed on the background of the white background reflection sheet 103 in substantially the same manner as in the daytime. Presents a sign of a predetermined color. On the other hand, in a dark place such as during a power outage at night, the reflected light from the background reflective sheet 103 and the reflective sheet 104 for display disappears, but by the stored light emitted from the phosphorescent material-containing resin body 105 portion arranged and fixed in a dot shape. The entire area of the background reflection sheet 103 emits light, the display reflection sheet 104 is illuminated, and the signs are relatively displayed as a predetermined color or black pattern.
JP 2008-165203 A

  However, as proposed in Patent Document 1 described above, the phosphorescent material-containing resin body arranged and fixed in a dot shape on the reflective surface having the reflectivity of the background reflective sheet scatters the reflected light when it is exposed to light. The area around the sign of the reflective sheet for display is unclear, and when it is not exposed to light, it illuminates the reflective sheet for display by emitting accumulated light, but it is arranged and fixed in a dot shape on the reflective sheet for background The proportion of the resin material containing the phosphorescent material is less than half of the area of the reflective sheet for background, and the amount of accumulated light is small, so it is not necessary to illuminate the sign on the reflective sheet for display. There is a problem that the sign is dark and not easily visible at night when there is no sign.

  The present invention has been made in view of the above circumstances, and the surrounding area of the sign is clearly recognized as a normal display device that is exposed to light in the daytime. Even when there is a light source at night, light is emitted in the same manner as in the daytime. It is clearly recognized as a normal display device that hits, and furthermore, a large amount of accumulated light can be obtained even in dark places where there is no light or at the time of power failure, etc., so that the sign can be easily seen and the guidance function is demonstrated reliably It is an object to provide a display device.

  The present invention includes a phosphorescent unit 2 that accumulates incident light radiated from a light source such as the sun or an automobile illumination lamp, a sign unit 3 that displays a sign such as a symbol or character, and a phosphor that reflects incident light and reflects it as reflected light. A reflection unit 4 that is incident on the unit 2, and the incident light and the reflected light are simultaneously incident on the light storage unit 2 and accumulated in the light storage unit 2 as light storage. When the incident light is stopped, the light is stored in the light storage unit 2. A display device 1 is provided which displays a sign such as a symbol or a character of the sign section 3 by emitting the stored light.

  According to the present invention, a vehicle driver or the like recognizes a sign as a normal display device without feeling uncomfortable during daytime or nighttime illumination of a vehicle, and can be used even in a dark place such as at night or when there is no light. It is possible to provide a display device in which a sign can be easily visually recognized.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will be described below in detail with reference to FIGS. 1 and 2, but the present invention is not limited to such an embodiment.

FIG. 1 is a diagram showing a display device 1 according to the present invention, where (1) is a side view and (2) is a front view.
2A and 2B are diagrams showing an AA cross section of FIG. 1B, FIG. 2A is a diagram for explaining an operation by incident light, and FIG. 2B is an operation when the incident light disappears. It is a figure for demonstrating.

  As shown in FIGS. 1 (1) and 1 (2), in the embodiment of the present invention, the light emitted from the light source is received and stored, and the light stored when the light emitted from the light source disappears is stored. Display device 1 that displays a sign by emitting light, a phosphorescent unit 2 that accumulates incident light emitted from a light source such as the sun or an automobile illumination lamp, a sign unit 3 that displays a sign such as a symbol or a character, The reflecting portion 4 is configured to reflect incident light and enter the light storing portion 2 as reflected light, and a holding 5 that is fixed to the reflecting portion 4 and holds the light storing portion 2 and the label portion 3.

Next, the embodiment will be described in detail with reference to FIGS. 1 and 2.
In the display unit 1, the phosphorescent unit 2 is composed of a translucent milky white paint or seal that emits accumulated phosphorous when the transparent member 21 made of plastic or glass is irradiated and emits accumulated phosphorous when the light irradiation disappears. A phosphorescent material 22 is applied or pasted, and the marking portion 3 is a paint or seal of a predetermined color that does not transmit light for displaying a sign such as a symbol or character on the surface of a U-shaped transparent member 31 made of plastic or glass. The reflective portion 4 is formed by applying a reflective material 42 such as an aluminum foil, an aluminum vapor deposition material, or a white paint to the inside of a semi-cylindrical member 41 made of metal, plastic, wood, or the like. The holding part 5 is made of a semi-circular metal, plastic, wood, etc., and the holding part 5 is fixed to both sides of the reflection part 4 with an adhesive or screws, and the phosphorescent part 2 is provided at both central parts of the holding part 5. Fixed with adhesive or screws, in which the labeling unit 3 is constituted by fitting the light storing section 2.
In addition, the label | marker part 3 shall be set so that attachment or detachment is possible, and shall replace | exchange according to the content of a label | marker.
Further, the semi-cylindrical member 41 can have the same effect even if the semi-cylindrical member 41 has another shape, for example, a semi-elliptical shape or a flat shape in the center and an inclined shape in the periphery, and the shape of the holding portion 5 covers these ends. It is.

Next, the operation will be described.
(1) When incident light is irradiated,
As shown in FIG. 2 (1), for example, when the display device 1 is irradiated with incident light P0 to P3 emitted from a light source such as the sun or an illumination lamp of an automobile,
Incident light P <b> 0 is reflected by the reflecting material 42 of the reflecting portion 4 to become reflected light, passes through the transparent member 21 of the light storing portion 2, and is stored as light storing in the light storing material 22.

  Incident light P1 is applied to the labeling material 32, but the labeling material 32 is opaque and therefore does not reach the phosphorescent portion 2, and is reflected or absorbed by the labeling material 32 to display a sign of a predetermined color.

  Incident light P <b> 2 passes through the center of the transparent member 21 of the label part 2 and is irradiated on the phosphorescent material 22 and accumulated as phosphorescent light. A part of the incident light P <b> 2 passes through the phosphorescent material 22, passes through the transparent member 21, and reaches the reflecting material 42, but is reflected by the reflecting material 42 and becomes reflected light to pass through the transparent member 21 to the phosphorescent material 22. It is added and stored as light storage.

  Incident light P <b> 3 passes through the end of the transparent member 21 of the label part 2, is irradiated on the phosphorescent material 22, and is accumulated as phosphorescent light. A part of the incident light P3 passes through the phosphorescent material 22, passes through the transparent member 21, and reaches the reflector 42, but is reflected by the reflector 42 and becomes reflected light to pass through the transparent member 21 to the phosphorescent material 22. It is added and accumulated as light storage.

Since the reflecting material 42 reflects each incident light in a plurality of directions as indicated by dotted lines in the figure to produce reflected light, the reflected light is irradiated over the entire phosphorescent material 22 and added and accumulated as accumulated light.
Therefore, the light storage is also accumulated at the position of the light storage material 22 that is blocked by the marker material 32 and does not reach the incident light P1. Further, incident light emitted from a light source such as the sun or an illumination lamp of an automobile is not limited in part as incident light P0 to P3 for explanation, and is continuously emitted to the entire display device 1. It is obvious that it will be done.

  In this way, when the display device 1 is irradiated with incident light emitted from the light source such as the sun or an illumination lamp of an automobile, the incident light and the reflected light are added to the entire phosphorescent material 22 of the phosphorescent unit 2 to increase the luminous intensity. The phosphorescent material 22 is displayed in milky white by directly reflecting a part of the incident light except the portion of the labeling material 32 of the labeling unit 3 and the labeling material 32 of the labeling unit 3 directly reflects the incident light. Since it absorbs and becomes the predetermined color of the labeling material 32, the milky white color of the phosphorescent material 22 and the predetermined color of the labeling material 32 are clearly distinguished in the display device 1, so that the sign can be clearly identified and displayed. .

(2) When incident light disappears,
As shown in FIG. 2 (2), when the incident light disappears, for example, among the accumulated light accumulated in the phosphorescent material 22 of the phosphorescent unit 2, the phosphorescent R2, the phosphorescent R3, and the reflecting unit 4 in the direction of the labeling unit 3. B1 to phosphorescent B3 are emitted. The phosphorescence B1 to phosphorescence B3 pass through the transparent member 21, are reflected by the reflecting material 42, become reflected light, pass through the transparent member 21 again, pass through the phosphorescent material 22, and are added to the phosphorescent light R2 and phosphorescent light R3 to be labeled part 3 Radiated in the direction. Since the emitted light storage is not stored again in the light storage material 22 (wavelength selectivity), the reflected light of the light storage passes through the light storage material 22.

  Since the labeling material 32 of the labeling unit 3 is opaque, the labeling material 32 does not pass even if the luminous material is irradiated from the light storage unit 2 to the marking material 32. For this reason, the range of the labeling material 32 of the labeling unit 3 is displayed as a dark part (corresponding to black), and the range other than the labeling material 32 is displayed as a bright part (light storage irradiation).

  Further, it is formed of an opaque aluminum foil, aluminum vapor deposition or a white paint reflecting material with the phosphorescent portion 2 side of the marker material 32 as the back surface, and a predetermined color paint displayed on the back surface is applied to the surface of the marker material 32. Then, the phosphorescent light emitted from the phosphorescent unit 2 is reflected by the back surface of the marker material 32, passes through the phosphorescent unit 2, reaches the reflector 4, is reflected by the reflector 42, and reaches the phosphorescent unit 2 again as reflected light. After that, the light is transmitted and further added to the light storage R2 and the light storage R3. In particular, when the proportion of the labeling material 32 is large, the amount of accumulated light in a range other than the labeling material 32 can be increased by forming the back surface of the labeling material 32 with a reflective material.

  When the incident light disappears in this way, the accumulated light accumulated in the phosphorescent material 22 of the phosphorescent unit 2 is directly emitted in the direction of the range other than the labeling material 32 of the labeling unit 3 and the reflected light of the phosphorescent light is also added. As a result, the amount of light in a range other than the labeling material 32 is increased and emitted from the labeling unit 3, so that the labeling material 32 of the labeling unit 3 that does not pass phosphorescence can be displayed more clearly. It is obvious that the phosphorescence is not limited in part as the phosphorescence R2, phosphorescence R3, phosphorescence B1 to phosphorescence B3 used for the explanation, and is continuously emitted from the entire phosphorescent material 22. is there.

As described above, according to the embodiment of the present invention, when the display device 1 is irradiated with incident light, the milky white color of the phosphorescent material 22 and the predetermined color of the marker material 32 are clearly distinguished and the phosphorescent material 22 The accumulated light is accumulated with high efficiency by adding the direct light and the reflected light, and when the incident light disappears, the accumulated light accumulated with high efficiency is directly emitted in the direction of the label part 3 and the reflected light of the accumulated light is also added. The range of the labeling material 32 and the range other than the marking material 32 of the part 3 are clearly distinguished because the brightness difference is large.
Particularly at night, immediately after the incident light from the illumination of an automobile or the like disappears, a large amount of accumulated light is emitted with high efficiency, so that the marker 32 can be easily identified from a distance.

  The present invention can function as an energy-saving lighting device at night or during a power outage if the sign section 2 is removed. In addition, in the event of a power outage in a wide area during a disaster, portability can be added. It can function effectively as a guide for evacuation guidance.

It is a figure which shows the display apparatus 1 of this invention, (1) shows a side view, (2) shows a front view. It is a figure which shows the AA cross section of FIG.1 (2), (1) is a figure for demonstrating the operation | movement by incident light, (2) is a figure for demonstrating operation | movement when incident light lose | disappears. It is. It is sectional drawing for demonstrating the display apparatus of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Luminous storage part 3 Marking part 4 Reflecting part 5 Holding part 21 Transparent member 22 Luminous storage material 31 Transparent member 32 Marking material

Claims (1)

A phosphorescent unit that accumulates incident light emitted from a light source such as the sun or an automobile illumination lamp, a marker unit that displays a sign such as a symbol or character, and a reflection that reflects the incident light and enters the phosphorescent unit as reflected light And consists of
The incident light and the reflected light are simultaneously incident on the phosphorescent unit and accumulated as phosphorous in the phosphorescent unit. When the incident light is stopped, the phosphorescent light accumulated in the phosphorescent unit is emitted to A display device that displays signs such as symbols and characters.

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