JP4804835B2 - Luminescent information display device - Google Patents

Description

  The present invention relates to a light-emitting information display device that displays information by light emission from a light emitter.

  Light-emitting information that displays various information by illuminating the display unit internally or indirectly with a light emitter to cause the display portion to emit light, or arranging the light emitters in a matrix to cause a desired light emitter to emit light Various display boards have been used. The light emitters and control devices generate heat during operation. When the light emitters and control devices are placed in a sealed space, the light is emitted from the light emitters due to heat buildup. In some cases, the brightness and life are adversely affected, or the substrate and peripheral devices are deformed or broken by heat.

  In order to dissipate heat from such a light emitter, for example, in a guide light in which end covers are attached to both ends of a luminaire main body with a built-in lamp, a lamp chamber is formed in the luminaire main body, An induction lamp is disclosed in which a component storage chamber is formed, and a heat dissipation hole is provided in a partition plate that partitions the lamp chamber and the electrical component storage chamber (for example, Patent Document 1).

CD-ROM for actual application No. 5-31167 (No. 7-1509)

  However, in the conventional light emitting information display device such as Patent Document 1, although there is no fear that moisture, dust, or the like enters the lamp chamber, the heat dissipation depends only on the metal cover. When the calorific value becomes large, there is a concern that sufficient heat radiation is not performed. In order to dissipate heat, it is necessary to provide a hood etc. at the inlet / outlet of the air so that moisture and dust do not enter the device. There is a risk that it may be necessary or the aesthetics of the device may be impaired.

  The present invention has been made in view of the problems as described above, and can sufficiently dissipate heat even when the amount of heat generated by the luminous body is large. In addition, moisture and dust can enter the apparatus with a simple structure. It is an object of the present invention to provide a light-emitting information display device that can prevent the above-described problem.

In order to achieve the above object, the present invention is configured as follows. That is, the light-emitting information display device according to the present invention includes a light emitter, a control device, and the like in a device body that includes a fixed portion and a front opening portion that is attached to the front side of the fixed portion so as to be closed and open. A storage display chamber is formed, and the fixing part is formed by a rectangular frame having a hollow part, and the hollow part of each frame forming the rectangular is communicated with air. made it possible to pass through, also includes a blower for feeding air into the hollow portion from the display compartment using a communicated with the heat dissipating hole and the display chamber and the hollow portion, further, the outside air from the hollow portion A communicating exhaust hole is provided below the heat radiating hole.

  According to the light emitting information display device according to the present invention, the heat generated from the light emitter housed in the display chamber is forcibly discharged from the heat exhaust hole by the blower, so that the heat generation amount of the light emitter increases. However, it is not necessary to provide a hood or the like because the hollow portion is interposed between the display chamber and the outside air and the exhaust hole is provided below the heat dissipation hole. Intrusion of moisture, dust and the like into the apparatus can be prevented with a simple structure using only the material.

  Further, the heat radiating hole is provided near the upper end of the display chamber, and if the exhaust hole is provided on the side surface or the lower surface of the frame member, the heat accumulated in the upper part of the display chamber is efficiently discharged, and the exhaust hole It is preferable because it is possible to more reliably prevent intrusion of moisture, dust, and the like from the light source and protect the light emitter, the control device, and the like in the display chamber.

  In addition, if the display chamber is provided with an intake hole on the lower surface and the exhaust hole and the intake hole are provided close to each other, the exhaust from the exhaust hole is mixed with the intake air from the intake hole to the display chamber. It is preferable that a sudden temperature change is prevented from occurring in the display chamber, and the occurrence of condensation or the like can be prevented in advance.

  According to the light emitting information display device according to the present invention, the heat generated from the light emitter housed in the display chamber is forcibly discharged from the heat exhaust hole by the blower, so that the heat generation amount of the light emitter increases. However, it is not necessary to provide a hood or the like because the hollow portion is interposed between the display chamber and the outside air and the exhaust hole is provided below the heat dissipation hole. Intrusion of moisture, dust and the like into the apparatus can be prevented with a simple structure using only the material.

  BEST MODE FOR CARRYING OUT THE INVENTION The best embodiment according to the present invention will be specifically described below with reference to the drawings.

  1A and 1B show an embodiment of a light-emitting information display device according to the present invention, in which FIG. 1A is an overall perspective view and FIG. 1B is an explanatory view showing a state in which a display chamber is opened. First, in (a), the light-emitting information display device 10 is arranged such that the light emitters 1 are arranged in a matrix, and the light emitter 1 emits light to display characters such as “cautions for freezing” and “5”. It is a thing. The light-emitting information display device 10 includes a front opening portion A provided with the light emitter 1 and a fixing portion B attached to the support. The front opening portion A and the fixing portion B rotate around the pivot hinge H. The front opening A is a left-opening door.

  Next, in (b), when the front opening portion A is closed, the closed state is maintained by the pivot hinge H and the one-touch type closing keys J1 and J2. When the front opening portion A is opened, the front side of the fixing portion B is opened, but the front opening portion A and the fixing portion B are almost sealed when the front opening portion A is closed. Thus, the display chamber 3 in which the light emitter 1, the substrate 11, the control device 2, and the like are accommodated is formed. A blower 4 for discharging the heated air in the display chamber 3 is further provided above the display chamber 3. On the back side of the fixed portion B, a mounting bracket 5 for mounting the light emitting information display device 10 to the support is mounted.

  FIG. 2 is a cross-sectional view showing a CC cross section in FIG. A front frame 6 is framed around the front opening A to fix the light emitter 1, the substrate 11, the front plate 8, and the like, and a rear frame 7 is framed to the fixing unit B to control the control device. 2, the back plate 9 and the like are fixed, and the display chamber 3 is mainly formed by the front frame 6, the rear frame 7, the front plate 8, and the back plate 9. The front side frame body 6 and the rear side frame body 7 are made of an aluminum extruded profile, and have continuous hollow portions 61 and 71. The front side frame body 6 and the rear side frame body 7 are framed in a rectangular shape, and the hollow portions 61 and 71 in each of the front side frame body 6 and the rear side frame body 7 forming the rectangle are communicated so that air can pass therethrough. It has been. In a state where the front opening part A is closed, the sealed state of the display chamber 3 is secured by the packing P provided between the fixing part B and the front opening part A. In the present embodiment, heat is radiated using the hollow portion 71 of the rear frame 7, but heat may be radiated using the hollow portion 61 of the front frame 6.

  FIGS. 3A and 3B show the vicinity of the lower surface of the light-emitting information display device 10, where FIG. 3A is a bottom view and FIG. 3B is a side view near the lower end. First, in (a), an exhaust hole 72 leading to the hollow portion 71 is provided in the bottom surface of the rear frame 7 on the bottom surface of the light emitting information display device 10, and the bottom surface of the front opening portion A is provided in the display chamber 3. An intake hole 31 through which air can be introduced is provided. A filter (not shown) that allows air to pass but prevents entry of dust and the like is attached between the intake hole 31 and the display chamber 3. As will be described later, the heated air in the display chamber 3 is exhausted from the exhaust hole 72, but the intake hole 31 and the exhaust hole 72 are provided close to the same bottom surface. When air from the exhaust hole 72 is mixed into the air taken in, for example, when cool air damp at dusk enters the display chamber 3 and a large temperature difference occurs between the air and the device driver For example, the temperature difference can be reduced to prevent condensation on the inner surface of the display chamber 3.

  Next, in (b), since the exhaust hole 72 is for exhausting, it is opened on the lower surface of the rear frame 7, but the intake hole 31 is provided with the above-mentioned filter, but as much as possible. In order to prevent moisture from entering into 31, it is opened in the upper surface portion of the groove portion 32 provided between the front frame body 6 and the rear frame body 7, so that rainwater directly hits the opening portion of the intake hole 31. The water that travels along the side of the device does not come into direct contact.

  FIG. 4 is a longitudinal sectional view showing an outline of the DD section shown in FIG. 2. The blower 4 is provided in the vicinity of the upper end in the display chamber 3, and the rear frame 7 is provided with a heat radiating hole 73 communicated from the display chamber 3 to the hollow portion 71. Air sent by the blower 4 is introduced into the hollow portion 71 through the heat radiating holes 73. The air heated by the illuminant 1 in the display chamber 3 stays above the display chamber 3 because of its low density. However, the blower 4 causes the heated air N in the display chamber 3 to pass through the hollow portion 71. , The heated air N is efficiently discharged from the display chamber 3. Further, the air N sent into the hollow portion 71 passes through the hollow portion 71 downward and is discharged to the outside air from an exhaust hole 72 provided in the lower surface of the rear frame 7, thereby radiating heat from the display chamber 3. Is made. Since the exhaust holes 72 are provided on the lower surface of the rear frame 7, the heated air N spreads over the entire rear frame 7, causing corrosion of the inner surface during cold weather and the like. Condensation on the inner surface of the body 7 can be prevented.

  FIG. 5 is a longitudinal sectional view showing another example of the exhaust hole 72. If the exhaust hole 72 is provided below the heat radiating hole 73 as shown in (a), it is provided on the side surface near the middle of the rear frame 7 to reduce the distance between the exhaust hole 72 and the heat radiating hole 73. The heat dissipation rate may be increased. Further, as shown in (b), the exhaust holes 72 and the heat radiating holes 73 may be provided diagonally to increase the distance to prevent intrusion of moisture, dust, etc. The exhaust holes 72 are located below the heat radiating holes 73. If provided, the exhaust hole 72 may be provided at an appropriate position. In FIG. 3, the exhaust hole 72 is provided on the lower surface so that it also serves as a drain hole. However, when the exhaust hole 72 is provided on the side surface or the like, It is preferable to provide a drain hole 74 for releasing the water staying in the hollow portion 71 on the lower surface.

It is explanatory drawing which shows one Embodiment of the light emission type information display apparatus concerning this invention. It is CC cross-sectional view of FIG. It is explanatory drawing which shows the detail of lower end vicinity of the light emission type information display apparatus concerning this invention. It is DD longitudinal cross-sectional view of FIG. It is a longitudinal cross-sectional view which shows the other example which provides an exhaust hole.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light-emitting body 2 Control apparatus 3 Display chamber 4 Blower 7 Rear side frame 71 Hollow part 72 Exhaust hole 73 Heat exhaust hole 10 Light emission type information display apparatus N Heated air

Claims (3)

A display chamber in which a light emitter, a control device and the like are housed is formed in the apparatus main body having a fixing part and a front opening part attached to the front side of the fixing part so as to be closed and open , and the fixing is performed. The portion is formed by forming a frame having a hollow portion into a rectangular frame, and the hollow portion of each frame forming the rectangle is communicated to allow air to pass therethrough, and the display chamber And a blower for sending air from the display chamber to the hollow part using a heat radiating hole communicated with the hollow part , and an exhaust hole communicating with the outside air from the hollow part is provided below the heat radiating hole. A light-emitting information display device characterized by comprising: The light emitting information display device according to claim 1, wherein the heat radiating hole is provided near an upper end of the display chamber, and the exhaust hole is provided on a side surface or a lower surface of the frame member. The light emitting information display device according to claim 1, wherein the display chamber is provided with an intake hole on a lower surface, and the exhaust hole and the intake hole are provided close to each other.