JP5690212B2 - Information display device - Google Patents

Description

  The present invention relates to an information display device including a light emitting substrate on which a plurality of light emitters are arranged.

  2. Description of the Related Art Conventionally, various types of information display devices installed above or on the side of a road have been used. For example, a plurality of LEDs and the like are disposed on one surface of a light-emitting board and mounted. There are information display devices that display information such as characters and symbols on the light emitting substrate by combining turning on and off of LEDs, and various inventions have been disclosed for such information display devices.

  For example, in Patent Document 1, in a light-emitting diode display unit having a printed circuit board on which a plurality of light-emitting diodes are attached at a constant pitch, the reflector is provided with storage holes at a pitch similar to the pitch of the light-emitting diodes, and the storage holes are provided in the storage holes. A light emitting diode display unit containing the light emitting diode is disclosed.

JP-A-8-248900

  The light-emitting diode display unit disclosed in Patent Document 1 stores a light-emitting diode in a storage hole provided in a reflector, and corrects a shift in the pitch of the light-emitting diode attached to a printed circuit board to improve display quality. However, there is a concern that the effect of the expansion of the member due to heat is reduced because the reflector itself is deformed.

  The present invention provides an information display device with good display quality even when a member is thermally expanded due to heat generated from a light emitter or a difference in temperature.

In order to achieve the above object, the present invention is configured as follows.
That is, the information display device according to the present invention includes a rectangular light emitting substrate having a plurality of light emitters disposed on one surface, and a pedestal portion to which the light emitting substrate is fixed,
The light emitting substrate has a plurality of through holes formed along two opposite sides, and is disposed on the pedestal portion by an insertion member that is inserted into the through hole and fixed to the pedestal portion,
The through-hole is formed into a fixed through-hole formed in a shape slightly larger than the cross-section of the insertion member, and a long-hole shape oriented in the longitudinal direction in the direction along the two sides so that the insertion member can be freely inserted. A long through hole is provided, and
The fixed through-holes through which the insertion members are inserted are respectively provided on the two sides and at two adjacent corners of the light emitting substrate.

The information display device according to the present invention includes a rectangular light emitting substrate in which a plurality of light emitters are disposed on one surface, and a pedestal portion to which the light emitting substrate is fixed.
The light emitting substrate is arranged on the pedestal portion by a plurality of through holes formed along two opposite sides and inserted into the pedestal portion through the through holes and fixed to the pedestal portion. The substrate can be easily arranged and fixed at a predetermined position of the pedestal, and the display of characters, figures, and the like can be expressed by combining lighting and extinguishing of the plurality of light emitters.
In addition, the through hole can be loosely inserted by forming a fixed through hole formed in a shape slightly larger than the cross section of the insertion member and a long hole shape in which the longitudinal direction is directed along the two sides. And providing a long hole through hole formed in
Since the fixed through-holes through which the insertion member is inserted are provided at the two adjacent corners of the light-emitting substrate, one on each of the two sides, the fixed through-holes provided at the two adjacent corners of the light-emitting substrate The light emitting substrate can be easily disposed at a predetermined position of the pedestal portion by inserting the insertion member through the insertion member. Even if the light emitting substrate expands / shrinks due to heat generation or a difference in temperature, the thermal expansion / contraction is possible until the insertion member comes into contact with the edge of the long hole through hole. The distortion of the said light emission board | substrate accompanying can be suppressed, and the quality of the display by each said light-emitting body can be made favorable.

Further, the fixed through holes are formed one by one at each of the four corners of the light emitting substrate,
If the insertion member is inserted one by one on each of the two sides and only through the fixed through holes provided at two adjacent corners of the light emitting substrate, the insertion member is used for positioning the light emitting substrate. Since the position of the fixed through-hole through which the light-emitting element is inserted can be provided by selecting either one of the two sides, it is preferable because the light-emitting substrate can be suitably attached according to the shape of the pedestal.

In addition, the pedestal portion is adjacent to the two light emitting substrates adjacent to each other on one side,
If the insertion members are respectively inserted into the fixed through holes formed at the two corners located at both ends of the opposite one side of each light emitting substrate, the light emitting substrates are heated or cooled, etc. Even if it expands / shrinks, the distortion of each light emitting substrate accompanying this can be suppressed, and the change in the size and relative position of the gap between each light emitting substrate is suppressed, so that the display quality by the two light emitting substrates is reduced. Can be improved.

  According to the information display device of the present invention, the display quality can be improved even if the light emitting substrate is thermally expanded or contracted.

BRIEF DESCRIPTION OF THE DRAWINGS (b) is a front view and (b) is a side view which shows one Embodiment of the information display apparatus which concerns on this invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a front view which shows the light emitting substrate of FIG. It is a schematic diagram which shows the condition which displayed the character on the light emission board | substrate of FIG. It is a schematic diagram which shows the condition which displayed the character on the light emission board | substrate of FIG. It is the schematic of the longitudinal cross-section which shows the condition where the light emission board | substrate of the conventional information display apparatus thermally expanded. It is the schematic of the longitudinal cross-section which shows the condition where the light emission board | substrate of the information display apparatus of FIG. 1 thermally expanded.

Embodiments of the present invention will be specifically described with reference to the drawings.
In the drawings, 1 is an information display device.
In the information display device 1, a left and right vertical frame body 31 and upper and lower horizontal frame bodies 32 made of an aluminum extruded shape are framed to form a frame body 3, and four light emitting substrates are formed inside the frame body 3. 4a, 4b, 4c, and 4d are attached in parallel from above to below.
An orange transparent front plate 5 made of polycarbonate resin is disposed on the front side of each of the light emitting substrates 4 a to 4 d and attached to the frame 3.
Further, a back plate 6 is disposed on the back side of the information display device 1 and attached to the frame 3. The light emitting substrates 4 a to 4 d are connected to the frame 3, the front plate 5, and the back plate 6. It is housed inside the hollow box that is formed.

A plurality of LEDs 2 are disposed and attached to the front side of each of the light emitting substrates 4a to 4d. In the light emitting substrates 4a and 4b, the LEDs 2 emit light at necessary locations, whereby the light emitting substrate 4a. 4b is formed so that information such as characters and symbols can be variably displayed.
In the light emitting substrate 4c and the light emitting substrate 4d, the LEDs are arranged at positions representing the character shapes of “Note” and “Intention”, respectively, so that each of the characters can be displayed in a light emitting manner.

The left and right vertical frame body 31 has an L-shaped cross section and a hollow box shape, and ribs 311 that divide the vertical and horizontal sides of the L-shaped cross section are disposed, so that the hollow portion is a hollow portion on the side surface side. 312 and a hollow portion 313 on the front side.
Due to the box shape, the left and right vertical frames 31 have high rigidity.
On the back side of the hollow portion 313, there is provided an attachment member 33 made of an extruded aluminum member whose cross section is formed in a crank shape. The attachment member 33 has a front plate 331 and a plate-shaped pedestal portion 332 in the front-rear direction. The front plate 331 and the pedestal portion 332 are connected by a vertical plate 333 to be integrated with each other. The front plate 5 is sandwiched between the hollow portion 313 and the front plate 331 and fixed with screws B1 to fix the front plate 5 to the left and right vertical frames 31.
One mounting member 33 is fixed to each of the left and right vertical frame bodies 31 provided on the left and right sides of the frame body 3.

Further, the light emitting substrates 4 a to 4 d to which the LEDs 2 are attached are attached to the pedestal portion 332 of the attachment member 33. Specifically, a plurality of through holes 42 from the front surface to the rear surface are formed in the light emitting substrates 4a to 4d, and screws B3 inserted through the through holes 42 are screwed to the pedestal portion 332, and each light emitting substrate 4a to 4d are attached to the pedestal portion 332, respectively.
Each of the light emitting substrates 4a to 4d is bridged and fixed between two mounting members 33 fixed to the left and right vertical frame bodies 31 one by one.

  Further, between the light emitting substrate 4b and the light emitting substrate 4c arranged in the vertical direction and between the light emitting substrates 4c and 4d, a flat plate-shaped shielding plate 7 is arranged in parallel with the light emitting substrates 4c and 4d, respectively. And attached to the pedestal 332. Like the light emitting substrates 4a to 4d, the shielding plate 7 is bridged between the two pedestal portions 332 and screwed with screws B3.

  The back plate 6 is fixed to the left and right vertical frame bodies 31 and the upper and lower horizontal frame bodies 32 by screws 2 with screws 2.

4 is a front view showing the light-emitting substrate of FIG. 1, FIG. 5 is a schematic diagram showing a state where characters are displayed on the light-emitting substrate of FIG. 1, and FIG. 6 shows characters displayed on the light-emitting substrate of FIG. It is a schematic diagram showing the situation.
4A shows the light emitting substrate 4a, and FIG. 4B shows the light emitting substrate 4b.
The light emitting substrates 4a and 4b of the present embodiment are each formed in the same rectangular shape, and are formed in a vertically long rectangle that is long in the vertical direction. And LED2 is each arrange | positioned and attached to the front surface in the vertical direction and a horizontal direction.
The LEDs 2 respectively disposed on the light emitting substrates 4a and 4b are formed so as to be able to display predetermined characters, figures, etc. by selectively emitting light at necessary places, as shown in FIGS. In addition, characters such as “running” and “curve” can be variably displayed on the front side of the light emitting substrates 4a and 4b.
In this embodiment, the overall arrangement and number of the LEDs 2 are different between the light emitting substrates 4a and 4b. However, the interval between the LEDs 2 arranged adjacent to each other in the vertical direction and the LEDs 2 arranged adjacent to the left and right. The light-emitting substrate 4a and the light-emitting substrate 4b have the same space, and there are spaces where the LEDs 2 are not provided in some places, and the positions of these spaces are between the light-emitting substrate 4a and the light-emitting substrate 4b. It is only different. Also, as shown in FIG. 6, the vertical distance X1 between the LED 2 mounted on the lowermost side of the light emitting substrate 4a and the LED 2 mounted on the uppermost side of the light emitting substrate 4b is determined by each light emitting substrate. In 4a and 4b, it is provided so that it may become equal to the up-and-down space | interval X2 between LED2 arrange | positioned adjacently up and down.

In each of the light emitting substrates 4a and 4b, a plurality of the through holes 42 are formed in the two vertical sides 41 positioned on the left and right sides respectively along the vertical sides. The through-holes 42 are formed in the same positions in the light-emitting substrate 4a and the light-emitting substrate 4b. The through-holes 42 have the same shape, and the two vertical sides 41 have round hole-shaped fixed through-holes. 421 and a long hole through hole 422 having a long hole shape are formed.
Specifically, a total of four fixed through holes 421 are formed in each of the four corners of the light emitting substrates 4a and 4b.
The long hole through-holes 422 are formed in a total of six along each vertical side 41 with the longitudinal direction of the long holes directed in the vertical direction along the vertical side 41.
The three long through holes 422 formed along the vertical sides 41 are equally spaced between the two fixed through holes 421 formed near the upper end and the lower end of the vertical sides 41, respectively. The two fixed through holes 421 and the three long hole through holes 422 are linearly arranged along the vertical side 41.
That is, the fixed through holes 421a, the long hole through holes 422a, 422b, and 422c, and the fixed through holes 421b are formed in a line along the vertical side 41 of each light emitting substrate 4a and 4b in order from the top. ing.

Each of the fixed through holes 421 formed in the light emitting substrates 4a and 4b has a round hole shape slightly larger than the male screw portion of the screw B3.
This is because each light-emitting substrate 4a, 4b is in any of the upper, lower, left, and right directions with respect to the pedestal portion 332 at the formation position of the fixed through hole 421 through which the screw B3 screwed to the pedestal portion 332 is inserted. It is fixed with a diameter that does not interfere with insertion and is fixed without being displaced.
Further, each of the long hole through holes 422 is inserted such that the longitudinal direction of the long holes is directed upward and downward, and the size in the left and right width direction is the same as the diameter of the fixed through hole 421. The screw B3 is provided so as to be freely movable in the vertical direction.
This is because the light emitting substrates 4a and 4b can be displaced in the vertical direction with respect to the pedestal portion 332 at the formation position of the long hole through hole 422 through which the screw B3 screwed to the pedestal portion 332 is inserted. Is provided.

In the light emitting substrate 4a of the present embodiment, the screw B3 is inserted into the long hole through holes 422a and 422b and the fixed through hole 421b formed in each vertical side 41 and screwed to the pedestal portion 332. Yes.
As described above, the screw B3 is inserted into the fixed through-holes 421b formed at the two lower corners among the four fixed through-holes 421 formed at the four corners of the light emitting substrate 4a. When the light emitting substrate 4a expands / contracts due to heat generation or changes in temperature, the light emitting substrate 4a is restrained from being displaced in the lower side of the pedestal 332.

  Further, the screw B3 is inserted into the long hole through holes 422a and 422b formed along the vertical sides 41 and screwed to the pedestal portion 332, so that the light emitting substrate 4a is stably attached to the pedestal portion 332. However, the screw B3 inserted into the long hole through holes 422a and 422b is inserted in the vicinity of the center in the vertical direction of the long hole through holes 422a and 422b having a long hole shape in the vertical direction during assembly. Is provided. With the configuration as described above, when the light emitting substrate 4a expands / contracts due to heat generated by the lighting of the LED 2 or a change in temperature, the light is emitted until the screw B3 contacts the edge of the long hole through holes 422a, 422b. The substrate 4a can be expanded and contracted, and the occurrence of distortion of the light emitting substrate 4a accompanying the expansion and contraction is suppressed.

As described above, the light emitting substrate 4a allows the screw B3 to be inserted into the fixed through holes 421b formed at the two lower corners, and allows the other screws B3 to be inserted only into the long hole through holes 422 that are long in the vertical direction. It is provided so as to suppress the displacement of the vicinity of the lower side with respect to the pedestal portion 332 due to the expansion and contraction of the light emitting substrate 4a and to prevent the deformation of the light emitting substrate 4a from expanding and contracting in the vertical direction.
That is, the light emitting substrate 4a is fixed to the pedestal portion 332 in the vicinity of the lower ends of the left and right vertical sides 41, and is supported so as to be vertically misaligned above the light emitting substrate 4a.

The light emitting substrate 4b of this embodiment is provided adjacent to the lower side of the light emitting substrate 4a with the upper side facing the lower side of the light emitting substrate 4a, and is formed in each vertical side 41. The screw B3 is inserted into the hole 421a and the long hole through holes 422b and 422c and screwed to the pedestal 332.
Thus, among the four fixed through holes 421 formed at the four corners of the light emitting substrate 4b, the screw B3 is inserted into the fixed through holes 421a formed at the upper two corners, so that the light emitting substrate 4b is When the light emitting substrate 4b expands and contracts, the positional deviation of the light emitting substrate 4b on the pedestal portion 332 on its upper side is suppressed.

Further, the screw B3 inserted into the long hole through holes 422b and 422c is provided so as to be inserted in the vicinity of the center in the vertical direction of the long hole through holes 422b and 422c which are long in the vertical direction during assembly. When the light emitting substrate 4b expands / contracts, the light emitting substrate 4b can be expanded / contracted until the screw B3 comes into contact with the edges of the long hole through holes 422b / 422c. The distortion of the light emitting substrate 4b is suppressed.
A gap is provided between the light emitting substrate 4b and the shielding plate 7 disposed below the light emitting substrate 4b so that the light shielding substrate 4b does not come into contact with the shielding plate 7 when the light emitting substrate 4b expands and extends downward. Is provided.

As described above, the light emitting substrate 4b allows the screw B3 to be inserted into the fixed through holes 421a formed at the upper two corners, and allows the other screws B3 to be inserted only into the long hole through holes 422 that are long in the vertical direction. A position shift near the upper side with respect to the pedestal portion 332 due to expansion and contraction of the light emitting substrate 4b is suppressed, and deformation of expansion and contraction of the light emitting substrate 4b downward is not hindered.
That is, the light emitting substrate 4b is fixed to the pedestal portion 332 in the vicinity of the upper ends of the left and right vertical sides 41, and is supported so as to be vertically misaligned below the light emitting substrate 4b.

FIG. 7 is a schematic longitudinal sectional view showing a state where a light emitting substrate of a conventional information display device is thermally expanded.
In the conventional information display device, a plurality of round hole-shaped through holes are formed in a light emitting substrate 4E on which a plurality of LEDs 2 are arranged and attached, and a base portion 332 or the like is formed by screws B3 or the like inserted through the through holes. Screwed to the member. For this reason, when expansion due to heat occurs in the light emitting substrate 4E, the light emitting substrate 4E is fixed to the pedestal portion 332 at the positions where the respective through holes are formed, and is deformed so as to be distorted therebetween. Each LED 2 attached to the light emitting substrate 4E changes the direction of the optical axis due to the distortion of the light emitting substrate 4E, causing unevenness in the intensity of display light represented by the light emission of each LED 2. The quality was degraded.

FIG. 8 is a schematic vertical sectional view showing a state where the light emitting substrate 4a of the information display device 1 of FIG. 1 is thermally expanded. In FIG. 8, the illustration of the through hole 42 through which the screw B3 is not inserted is omitted.
The light emitting substrate 4a of the present embodiment is fixed to the pedestal portion 332 by a screw B3 inserted through the fixed through hole 421b, and supported by the screw B3 inserted through the long hole through holes 422a and 422b so as to be displaced in the vertical direction. Therefore, even when the light emitting substrate 4a expands due to heat, the light emitting substrate 4a is supported upward by the screw B3 until the screw B3 comes into contact with the edges of the long hole through holes 422a and 422b. It expands and the distortion of the front surface is suppressed. Thereby, the quality of the display represented by light emission of each LED2 arrange | positioned at the front surface of the light emission board | substrate 4a is maintained favorably.

  Similarly, the light emitting substrate 4b of the information display device 1 in FIG. 1 is also supported by the screw B3 until the screw B3 comes into contact with the edges of the long hole through holes 422b and 422c when the expansion due to heat occurs. And the distortion of the front surface thereof is suppressed, so that the display quality represented by the light emission of each LED 2 arranged on the front surface of the light emitting substrate 4b is maintained well.

In the light emitting substrates 4a and 4b provided adjacent to each other with the lower side and the upper side facing each other, the light emitting substrate 4a is the light emitting substrate 4b among the fixed through holes 421 respectively formed at the four corners. The screw B3 is inserted only into the fixed through-holes 421b located at both ends of the lower side opposed to each other, and is fixed to the pedestal portion 332 at this position.
Further, with respect to the light emitting substrate 4b, the screw B3 is inserted only into the fixed through holes 421a positioned at both ends of the upper side of the fixed through holes 421 formed at the four corners and opposed to the light emitting substrate 4a. It is fixed to the portion 332.
By fixing the light emitting substrates 4a and 4b to the pedestal portion 332 as described above, when each light emitting substrate 4a and 4b expands and deforms, the pedestal portion 332 on the lower side of the light emitting substrate 4a and the upper side of the light emitting substrate 4b. The positional deviation with respect to the light emitting substrates 4a and 4b is reduced, and the display quality is improved.

This is particularly effective when the display represented by each LED 2 is formed across the light emitting substrates 4a and 4b, as in the embodiment shown in FIG.
In the embodiment of FIG. 6, the display of each of the light emitting substrates 4a and 4b is combined to represent the three characters “curve”. It is formed so as to be straddled.
The vertical distance X1 between the LED 2 mounted on the lowermost side of the light emitting substrate 4a and the LED 2 mounted on the uppermost side of the light emitting substrate 4b is set up and down in each of the light emitting substrates 4a and 4b. By providing it so that it may become equal to the up-and-down space | interval X2 between LED2 arrange | positioned adjacently, it is comprised so that the sense of unity of the display expressed ranging over each light emission board | substrate 4a, 4b may not be impaired.
When a single display is integrally represented across two light emitting substrates 4a and 4b that are adjacent to each other as in the case of the long-symbol display of “−”, each of the light emitting substrates 4a and 4b is displayed. When a position shift occurs on the opposite side and the size of the gap between the light emitting substrates 4a and 4b and the relative position change, the shape of the one display is distorted and the sense of unity is lost to the viewer. Although it gives an unsightly impression, the occurrence of such a problem is suppressed.

  In the information display device 1 of the present embodiment, each of the light emitting substrates 4a and 4b is fixed to the pedestal portion 332 by inserting the screws B3 through the formed through holes 42, but the members to be inserted into the through holes 42 are The insertion member is not limited to a screw, and an insertion member that can be inserted into the through hole 42 can be used as appropriate. For example, a pin that is formed in a cylindrical shape or a polygonal column shape and can be fixed to the pedestal portion 332 may be used, or a protrusion provided integrally with the pedestal portion 332 may be formed and inserted into the through hole 4. Other insertion members may be used.

1 Information display device 2 LED
3 Frame body 31 Left and right vertical frame body 32 Upper and lower horizontal frame body 33 Mounting member 311 Rib 312 Hollow part 313 Hollow part 331 Front plate part 332 Base part 333 Vertical plate 4a, 4b, 4c, 4d Light emitting substrate 41 Vertical side 42 Through hole 5 Front plate 6 Back plate 7 Shield plate B1, B2, B3 Screw

Claims (3)

A rectangular light emitting substrate having a plurality of light emitters disposed on one surface, and a pedestal portion to which the light emitting substrate is fixed;
The light emitting substrate has a plurality of through holes formed along two opposite sides, and is disposed on the pedestal portion by an insertion member that is inserted into the through hole and fixed to the pedestal portion,
The through-hole is formed into a fixed through-hole formed in a shape slightly larger than the cross-section of the insertion member, and a long-hole shape oriented in the longitudinal direction in the direction along the two sides so that the insertion member can be freely inserted. A long through hole is provided, and
The information display device according to claim 1, wherein the fixed through-hole through which the insertion member is inserted is provided at each of the two sides and at two adjacent corners of the light emitting substrate. Each of the fixed through holes is formed at each of the four corners of the light emitting substrate,
2. The insertion member according to claim 1, wherein one insertion member is inserted through each of the two sides, and only through fixed through holes provided at two adjacent corners of the light emitting substrate. Information display device. The pedestal is provided with two light emitting substrates adjacent to each other adjacent to each other,
The said light emitting substrate has the said insertion member each inserted in each fixed through-hole formed in the two corners located in the both ends of the said opposite one side, respectively. Information display device.

Images