JPH05275748A - Segment type character display unit - Google Patents

Abstract

PURPOSE:To give a solid feeling to displayed characters in displaying characters such as numeric, etc., by a method wherein an optional segment light-emitting display unit of a plurality of segment light-emitting display units formed on the surface of a body case is lighted by a light derived from a light source provided on the reverse side of the body case. CONSTITUTION:Projection parts 25, 27 for forming shadows are provided in reflectors 11, 13 for guiding a light derived from a light source to each of segment light-emitting display units 3, 5, and a part which is strongly lighted by light and a part which is weakly lighted by a light are formed in the segment light-emitting display units 3, 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a segment in which a character such as an arbitrary number is displayed by a plurality of segment light emitting display portions arranged in an appropriate pattern such as a figure 8 pattern. Type character display device.

[0002]

2. Description of the Related Art Heretofore, a segment type character display device of this type has a plurality of segment light emitting display portions on a surface of a main body case, and an appropriate figure 8 pattern or the like. On the other hand, the substrate on the back side of the main body case is provided with a light source such as a light emitting diode chip in each of the portions in the reflector extending from the respective segment light emitting display portions to the back side of the substrate while forming the pattern. When any one of the light sources is turned on, an arbitrary segment light emitting display unit corresponding to the arbitrary light source is caused to emit light, so that characters such as appropriate numbers are displayed.

However, in the conventional segment type character display device, since the entire segment light emitting display section emits light of the same color and the same brightness, the characters such as numbers to be displayed are flat. However, there is a problem in that the product lacks a three-dimensional effect and has a low commercial value, and a person who views the product may mistakenly recognize a character such as a number. It is a technical object of the present invention to provide a segment-type character display device capable of imparting a stereoscopic effect to characters such as numbers to be displayed by imparting a difference in brightness to light emission in each segment light-emission display unit. To do.

[0004]

In order to achieve this technical object, the present invention is to form a plurality of segment light emitting display portions on a surface of a main body case in a pattern array of an appropriate shape, while the main body case is provided. In the numerical display device in which a light source such as a light emitting diode chip is provided on each of the portions of the reflector extending from the respective segment light emitting display portions to the rear surface of the substrate on the back side of the segment light emitting display in each of the reflectors. A shadow forming projection is formed so as to form a shadow due to the light from the light source only on a part in the width direction so as to extend along the longitudinal direction of the segment light emitting display section.

[0005]

[Operation] According to this structure, when each segment light emitting display section emits light by the light from the light source provided in the reflector, one of the segment light emitting display sections along one longitudinal edge of the segment light emitting display section. In the part, the projection for shadow formation provided in the reflector creates a shadow against the light source, so that the light emission is weakened, while in the segment light emitting display part, the other side edge part along the longitudinal direction is formed. The light from the light source is directly emitted irrespective of the shadow forming projections, so that the light is emitted strongly.

Therefore, in each segment light-emitting display portion, a portion of one side edge along the longitudinal direction emits light weakly, and a portion of the other side edge emits strong light, so that the portion emitting weak light at one side edge. Since the other side edge is in a shaded state with respect to the portion that strongly emits light, it is possible to give a stereoscopic effect to characters such as numbers displayed by the light emission of each segment light emitting display section.

[0007]

As described above, according to the present invention, characters such as numbers can be displayed with a stereoscopic effect, which can reduce erroneous recognition of characters such as numbers and greatly increase the commercial value. It can be improved, and yet, the present invention,
Since it suffices to provide the shadow forming means in each reflector, there is an effect that the size is not increased and the price is not significantly increased.

[0008]

Embodiments of the present invention will now be described with reference to the drawings when applied to a seven segment type display device for displaying numbers. In the figure, reference numeral 1 indicates a main body case formed of an opaque synthetic resin, and a display plate 2 laminated on the surface of the main body case 1 has seven segment light emitting display portions 3,
4, 5, 6, 7, 8, and 9 are provided in a substantially eight-character pattern array.

A substrate 10 is mounted on the back side of the body case 1, and inside the body case 1, the segment light emitting display sections 3, 4, 5, 6, are provided.
Hollow reflectors 11, 12, 13, 14, 15, 16, extending from each of 7, 8, 9 toward the substrate 10,
17 is formed. On the substrate 10, light emitting diode chips 18, 1 serving as a light source are provided in portions inside the respective reflectors 11, 12, 13, 14, 15, 16, 17.
9, 20, 21, 22, 23, 24 are provided.

Then, the respective reflectors 11, 12,
The reflectors 11, 12, 13, and 14 for the segment light-emitting display units 3, 4, 5, and 6 which extend in the vertical direction out of 13, 14, 15, 16, and 17 include the right inner side of the left and right inner side faces. Shadow forming projections 25 and 2 formed in a step shape on the side surface so as to project inward from the inner surface.
6, 27, and 28 for the segment light-emitting display units 3, 4,
It is provided so as to extend along the longitudinal direction of 5, 6.

Further, each of the reflectors 11, 12, 1
Among the reflectors 15, 16, 17 for the segment light-emitting display portions 7, 8, 9 in the form of extending in the lateral direction among 3, 14, 15, 16, 17, the lower inner surface of the upper and lower inner surfaces, Shadow forming projections 29, 30, 31 formed in a stepped shape so as to project inward from the lower side surface are provided so as to extend along the longitudinal direction of each segment light emitting display section 7, 8, 9.

In this structure, each of the segment light emitting display sections 3, 4, 5, 6, 7, 8, 9 has a reflector 11, 12, 13, 14, 15, 1 in each thereof.
Light emitting diode chips 18, 19 provided in 6, 17,
By emitting light from the light emitted from 20, 21, 22, 23, 24, appropriate numbers are displayed. In this case, the left side edge of the left and right side edges of each of the segment light emitting display sections 3, 4, 5, 6 extending in the vertical direction is provided with the light emitting diode chips 18, 19, 20, 21.
The shadow forming projections 25, 26, 27 and 28 directly hit the surface to emit strong light, while the right side edge portion is shaded by the shadow forming projections 25, 26, 27 and 28. Will emit light weakly.

In addition, the light emitting diode chips 22, 23, 24 are arranged at the upper edge portions of the upper and lower side edges of each of the segment light emitting display portions 7, 8, 9 extending in the lateral direction.
Directly hitting the shadow forming projections 29, 30, 31 independently of each other causes strong light emission, while the lower edge part is
Since the shadow forming projections 29, 30, 31 form a shadow of light, the light is emitted weakly.

As a result, each segment light emitting display section 3,
A state in which a portion of 4, 5, 6, 7, 8, 9 that emits light weakly at one side edge along the longitudinal direction is shaded with respect to a portion that emits intense light at the other side edge along the longitudinal direction. Therefore, each segment light emitting display section 3, 4,
The numbers displayed by the light emission of 5, 6, 7, 8 and 9 are
As shown in FIG. 6, it becomes three-dimensional.

In the above embodiment, a light emitting diode chip is used as a light source for each segment light emitting display unit, and light from the light emitting diode chip is guided to the segment light emitting display unit on the panel plate through a hollow reflector. However, the present invention is not limited to this, and can be applied to the case where a light source different from the light emitting diode chip is used, and the transparent synthetic resin is provided in the hollow reflector. Or a transparent synthetic resin mixed with light-scattering particles is filled in the hollow reflector, and the surface of this synthetic resin is configured as a segment light-emitting display section. Needless to say, it is also applicable.

Furthermore, the shadow forming projection is not limited to the stepped form of the above-mentioned embodiment, but may be other forms.

[Brief description of drawings]

FIG. 1 is a plan view of a character display device according to an exemplary embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a plan view taken along line VV of FIG.

FIG. 6 is a plan view showing a state in which numbers are displayed.

[Explanation of symbols]

1 main body case 2 panel plate 3,4,5,6,7,8,9 segment light emitting display section 10 substrate 11,12,13,14,15,16 17 17 reflector 18,19,20,21,22,23, 24 Light Emitting Diode Chip 25, 26, 27, 28, 29, 30, 31 Shadow Forming Protrusion

Claims (1)

[Claims] 1. A plurality of segment light emitting display portions are formed on a front surface of a main body case in a pattern arrangement of an appropriate shape, and a substrate on the back surface side of the main body case is provided with a back surface from each segment light emitting display portion. In a numerical display device in which a light source such as a light emitting diode chip is provided in each of the portions of the reflector extending to, the light from the light source is provided only in a part of the width direction in the segment light emitting display section in each of the reflectors. A segment-type character display device, characterized in that a shadow-forming projection portion for forming a shadow is formed so as to extend along the longitudinal direction of the segment light-emitting display portion.