JP3007664U - Swing display - Google Patents

Abstract

(57) [Summary] [Purpose] A swing-type display device with a simple structure that can be manufactured at low cost, and can display a clear image with light of sufficient brightness toward the front side of the main body and the rear side of the main body. The light is guided to such a degree that the person who operates the swing can confirm the display. The components that direct the light to the back side do not impair the overall design freedom of the device. [Structure] A long groove portion 5 is formed on the front surface of an elongated body case 1, and a large number of LEDs are provided on a bottom surface portion 5a of the long groove portion 5.
2 are linearly arranged in a posture in which the optical axis thereof is substantially perpendicular to the front part. A slit 6 along one side surface portion 5c of the long groove portion 5a in the main body case 1 is formed so as to penetrate to the rear surface portion of the main body case 1, and a part of the output light of the LED 2 passes through the slit 6 and the rear surface of the main body case 1. Be guided to the side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This device is a swing type display in which a long and slender body in which many light emitting diodes (LEDs) are linearly arranged makes a hand-held reciprocating swing so that the image due to the afterimage effect can be seen floating in space. Regarding the improvement of the device.

[0002]

[Prior art]

 For example, as disclosed in Japanese Patent Publication No. 3-32840 and Japanese Patent Laid-Open No. 6-67616, this type of swing type display device operates on the following principle. A swing type display device according to an embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 1, there is an LED array 3 in which a large number of LEDs 2 are linearly arranged in the front portion of a rod-shaped main body case 1. Also, in the main body case 1, this is swung left and right. An appropriate sensor for detection and a display control circuit are incorporated. Hold the grip part 4 at the base end of the body case 1 with your hand, hold it slightly higher in front of your face, and swing repeatedly left and right. This swing motion is detected by the sensor, and the display control circuit operates in synchronization with the sensor output. That is, the display data in the bit map format stored in the memory is sequentially read out in a predetermined order at an appropriate speed, and the data is aligned one line at a time to be a drive signal for each LED 2 and used as the display data. Accordingly, each LED 2 is blinked. When the blinking of the LED array 3 and the swing operation are well synchronized, characters and pictures appear to appear on the moving surface (scanning surface) of the LED array 3 in the space due to the afterimage effect.

Normally, the LED array 3 on the front surface of the main body is swung forward, and a display is performed toward a person in front. At this time, it is safer for the person operating the swing to see the display. In the device of Japanese Utility Model Laid-Open No. 4-130983, the front part of the LED array is covered with a transparent cover, and the transparent cover has a prism effect so that part of the LED light is guided to the rear side of the main body. Also, in the device of Japanese Utility Model Laid-Open No. 5-52880, the LED array is mounted so as to project to the side of the main body (individual LEDs are protected by a frame-shaped member) so that the LEDs are not limited to the front side of the main body. The rear side is also exposed so that the display can be seen from both sides.

[0005]

[Problems to be solved by the device]

 When the LED array is covered with a transparent cover that has a prism effect, a side of the main body case is diverted and a part of the light is guided to the back side, so a transparent cover with a width wider than the main body case is required. However, there are problems that the size of the cover becomes large and the constraint on the design becomes very large, the manufacturing cost of the cover is high, and the process of mounting the cover is increased. Further, in the case where the LED array is arranged on the side of the main body in a protruding state, there is a serious problem that the optical axis of the LED cannot be directed to the front side. An ordinary LED in which a chip is mounted on a transparent cylindrical body with a spherical lens at the upper end has a strong directivity in the optical axis direction, and almost no light is output in the circumferential surface direction of the cylindrical body. Therefore, the light with sufficient brightness is not output to the front side of the device body. Further, in the above-mentioned Japanese Utility Model Laid-Open No. 5-52880, since the spherical lens portion of the LED is covered by the frame-shaped protective body of the case, the output light of the LED is almost wasted.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide a swing type display device having a simple structure which can be manufactured at low cost, and which has a sufficient brightness of light toward the front side of the main body. A clear image can be displayed, and light is directed to the rear side of the main unit so that a person who performs a swing operation can check the display. Moreover, a structure that guides light to the rear side is provided. The part is that it does not impair the overall design freedom of the device.

[0007]

[Means for Solving the Problems]

 In the swing type display device of the present invention, a long groove is formed in the front part of the elongated body case, and a large number of LEDs are arranged in the bottom part of the long groove so that their optical axes are substantially perpendicular to the front part. The slits are arranged in a straight line and are formed along one side surface portion of the long groove portion in the main body case so as to penetrate to the back surface portion of the main body case, and a part of the output light of the LED is formed. It is configured to be guided to the back side of the main body case through the slit. In this configuration, it is preferable that one side surface portion of the long groove portion communicating with the slit is a rearward inclined surface that is inclined at an appropriate angle toward the back side of the body case, and this inclined surface is a mirror surface or a high reflectance. Is more preferable.

[0008]

[Action]

 Since the optical axis of each element of the LED array is directed to the front and there is no obstacle, a display with sufficient brightness can be seen from the front side. Since the LED array is arranged in the long groove portion, a part of the output light goes to both side surfaces of the long groove portion, but the light going to one side surface portion is reflected and passes through the slit, and the rear surface side of the main body. Emit to. With this, the person who swings can also confirm the display. The light guide efficiency to the back side can be improved by making the one side surface part a rearward inclined surface, or by making it a mirror surface or a high reflectance.

[0009]

【Example】

 The essential structure of the present invention for the swing type display device shown in FIG. 1 is shown in FIGS. A long groove portion 5 having a bottom surface portion 5a, a right side surface portion 5b and a left side surface portion 5c is formed on the front surface portion of the main body case 1. The right side surface portion 5b is a frontwardly inclined surface that is appropriately inclined toward the front side of the body case 1, and the left side surface portion 5c is a rearwardly inclined surface that is appropriately inclined toward the rear surface side of the body case 1. ing. A slit 6 is formed so as to penetrate to the back surface portion along the left side surface portion 5c which is inclined rearward. The slit 6 is open in the long groove portion 5, but its opening width is small, and the width of the slit 6 gradually increases toward the back side. The rearwardly inclined left side surface portion 5c in this embodiment is a mirror surface by adhering a sheet-shaped mirror made of acrylic resin to this portion.

Further, a large number of round holes are linearly formed in the bottom surface portion 5a of the long groove portion 5, and a large number of LEDs 2 soldered to the printed wiring board 7 in the main body case 1 are formed from the round holes. The LED array 3 is arranged so as to project to the front side of the main body case 1 and to be exposed at the bottom surface portion 5 a of the long groove portion 5. The spherical lenses of these LEDs 2 are in a front-facing posture, and the optical axis is front-facing.

Therefore, as shown by arrow A, strong light is emitted to the front side of the main body, and a display with high brightness can be seen from the front side. A part of the light of the LED 2 is reflected by the mirror surface of the left side surface portion 5c as shown by the arrow B, passes through the slit 6, and is emitted to the rear surface side of the main body. The operator himself swinging the device in the state as shown in FIG. 1 can also see the display by the light emitted to the back side.

[0012]

[Effect of device]

 With the swing type display device of the present invention, a clear image can be displayed with light of sufficient brightness toward the front side of the main body, and the display can be confirmed by the person operating the swing on the rear side of the main body. Can guide a degree of light. Also, since the components that guide the light to the back side are enclosed in the main body case, the overall design freedom is not impaired, and there is no particular need to increase the size, and most of the components are Since it is included in the main body case of the plastic molded product, it can be manufactured at low cost without increasing the number of assembly steps with a small number of parts.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a schematic form and a use state of a swing type display device according to an embodiment of the present invention.

FIG. 2 is a front view of the same device.

FIG. 3 is a rear view of the same device.

FIG. 4 is a sectional view taken along line CC in FIG.

[Explanation of symbols]

 1 Main Body Case 2 LED (Light Emitting Diode) 3 LED Array 4 Grip Section 5 Long Groove Section 5a Bottom Part 5b Right Side Part (Frontward Slope) 5c Left Side (Backward Slope) 6 Slit 7 Printed Wiring Board

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location H01L 33/00 H 7376-4M

Claims (4)

[Scope of utility model registration request] 1. A long groove portion is formed in a front surface portion of an elongated body case, and a large number of LEDs are linearly arranged in a bottom surface portion of the long groove portion in a posture in which an optical axis thereof is substantially perpendicular to the front surface portion. A slit along one side surface of the long groove portion of the main body case is formed so as to penetrate to the back surface portion of the main body case, and a part of the output light of the LED passes through the slit to the main body case. A swing type display device characterized in that it is configured so as to be guided to the back side of the. 2. The one side surface portion communicating with the slit in the long groove portion is a rearward inclined surface which is inclined at an appropriate angle toward the rear surface side of the main body case. Swing display device. 3. The swing type display device according to claim 2, wherein a surface of the rearwardly inclined surface is a mirror surface. 4. The swing type display device according to claim 2, wherein the surface of the rearwardly inclined surface has a high light reflectance.