JPS6237277Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a small electronic device that includes a sound alarm device in the device case.

Recently, small electronic devices equipped with an alarm device have been used. For example, a small electronic calculator with a clock notifies the set time using an alarm sound or a simple melodic musical tone emitted from the alarm device.

Normally, in this type of small electronic equipment, the sound alarm device is installed inside the device case, and the sound emitting hole that emits the sound emitted from the notification device to the outside is installed on the top of the device case to increase the sound reporting effect. There is. However, the operation section and the display section are concentrated on the top surface of the device case, occupying most of the space. In particular, as functions become more complex, such as small electronic calculators with clocks, the number of operation units provided on the front side of the equipment case increases. Therefore, in order to provide a sound emitting hole on the top surface of the equipment case, the space on the top surface must be expanded to secure the space for the sound emitting hole, resulting in the problem that the entire equipment case becomes larger. .

The present invention has been developed in view of the above circumstances, and by forming a recess in the bottom of the device case and providing a sound emitting hole, a sound alarm device that can produce good sound while preventing the case from increasing in size has been developed. The purpose is to provide small electronic devices with the following features.

Embodiments of the present invention will be described below with reference to drawings.

The drawing shows an embodiment in which the present invention is applied to a small electronic calculator with a clock. In the figure, reference numeral 1 denotes a computer case formed of synthetic resin in the shape of an oblong box, and is constructed by combining an upper case 2 serving as the upper part of the case and a lower case 3 serving as the lower part of the case. Inside the case 1, there are provided a circuit board, a display device for calculation and time information display, and a sound alarm device using a piezoelectric buzzer (none of which are shown). On the upper surface of the upper case 2, a calculation push button switch 4 and a mode switch 5 are arranged in one half, and a display section 6 corresponding to a display device and a clock push button switch 7 are arranged in the other half. It has been set up. Note that a cover 8 is attached to the upper case 2 to open and close one half of the upper surface portion 2a. Further, on the bottom surface 3a of the lower case 3, a battery cover 9 for opening and closing the battery storage section is provided in one half, and a recess 10 is formed in the other half. This recessed portion 10 is a bottom portion 3a.
It has a rectangular planar shape that is recessed from the surface to a predetermined depth. The recess 10 is open at its front, and both sides and the rear of the recess bottom 10a are surrounded by both side walls 10b and the rear wall 10.
The front portion of the bottom surface 10a of the recess, that is, the portion located at the front of the case 1 is opened to form an open portion. On the bottom surface 10a of the recess, a plurality of elongated sound emitting holes 11 extending in the front-rear direction of the recess are formed side by side at parallel intervals.
The rear end portion extends to the rear wall 10c of the recess 10, and the front end portion is located at the open front portion of the recess 10. These sound emitting holes 11 penetrate inside and outside of the lower case 3 at the bottom surface 10a of the recess.
Cloth is pasted on the inside of 0a to prevent dust and moisture from outside the case from entering into the lower case 3 through the sound emitting hole 11. A sound alarm device is provided in the other half of the interior of the case 1, and the sound generating section of the sound alarm device is located facing the sound emission hole 11 of the bottom surface 10a of the recess. That is, the recess 10 and the sound emitting hole 11 are formed facing the sounding section of the sound reporting device. For this reason,
The sound emitted from the sounding section of the sound alarm device is transmitted through sound emitting hole 1.
1 to the recess 10, that is, to the outside of the case 1. In addition, at the four corners of the bottom part 3a of the lower case 3, the abutment seats 12 may be formed integrally with the case or provided.
Or it is attached using an adhesive sticker.

This small electronic calculator with a clock is usually used as a clock by placing the case 1 on a mounting part such as a desk. When the case 1 is placed, the bottom surface 3a of the lower case 3 comes into contact with the placement surface, and the opening at the bottom surface 3a of the recess 10 is closed by the placement surface. The front part of the recess 10 is opened, and a space exists between the bottom surface 10a of the recess and the mounting surface in this front part, and this space becomes a part from which sound is emitted from the recess 10. For example, if a setting is made to make a sound at a certain time, the sound system is driven and the sound generating section generates a sound at the set time. The sound emitted by this sound alarm device is emitted into the recess 10 of the lower case 3 through the sound emitting hole 11, and then concentrated from the open part of the recess 10 and emitted to the front of the case 1. be done. The user uses the display section 6
Since the user is located in front of the case 1 when visually checking the time displayed, the user can clearly hear the sound emitted from the front of the recess 10 to the front of the case 1. Therefore, the user can know the set time by the sound of the sound alarm device. Note that the sound output by the sound alarm device may be a single tone or a melodic piece of music. Further, the sound by the sound alarm device is not limited to time notification, but can be used when playing music by combining different tones using the push button switch 5.

Therefore, in the case 1 of the small electronic calculator, the bottom surface 3a of the lower case 3 is usually only provided with a battery compartment, and no other operation-related items are provided, so the space on the bottom surface is used. It remains empty. Therefore, the recess 10 and the sound emitting hole 11 can be provided with plenty of room in the bottom surface 3a of the lower case 3 by utilizing the wide space, and the bottom surface space is expanded to provide the sound emitting hole 11. This is not necessary, and the case 1 can be prevented from becoming larger. In addition, by forming a recess 10 into the bottom surface 3a of the lower case 3 and forming a sound emitting hole 11 in the bottom surface 10a of the recess, the sound can be emitted even when the case 1 is placed on the mounting section. Hole 1
1 is not directly blocked, and the sound of the sound alarm device can be emitted from the sound emitting hole 11 to the recess 10, that is, to the outside of the case 1, thereby making it possible to make a clear sound. In particular, as in the embodiment described above, by opening the front part of the recess 10 and guiding the sound of the sound alarm device from the front part of the recess 10 to the front of the case 1 and emitting it, the sound in the recess 10 can be concentrated. Not only can the sound be emitted reliably, but it can also be emitted where the user can hear the voice most clearly.

Another possibility is to form the sound emitting hole directly on the bottom of the case and provide high legs on the case so that the bottom is spaced apart from the mounting section, but the presence of the legs makes the case look better. Moreover, if there are variations in the height of the legs, there will be problems such as rattling, which is not desirable in practice.

Note that the case is not limited to the upper and lower split type, but may be of other types. Further, the opening for releasing the sound of the sound alarm device to the outside is not limited to the embodiment, and may be provided on the rear side of the case. The sound emitting holes are not limited to those in the embodiment, and for example, a large number of circular holes may be formed. The present invention can be widely applied to small electronic devices equipped with a sound alarm device.

As explained above, the small electronic device equipped with the sound alarm device of the present invention has a recess formed in the bottom of the device case, which has an opening that is recessed from the bottom and opened in one direction. Since a sound emitting hole is formed on the bottom surface of the case to emit the sound of the sound alarm device, it is possible to prevent the case from increasing in size, and the sound from the sound alarm device is emitted in a concentrated manner in one direction.
The sound reporting effect can be greatly improved. In particular, if the open part is directed toward the user, even if the sound pressure of the voice is low, it can be clearly heard, so it is very practical when applied to electronic watches and the like.

[Brief explanation of the drawing]

1 and 2 are a perspective view from above and a perspective view from below, respectively, showing a small electronic calculator with a clock, which is an embodiment of the present invention. 1...Case, 2...Upper case, 2a...Top part, 3...Lower case, 3a...Bottom part, 4,
5, 7...Switch, 6...Display part, 10...Recessed part, 11...Sound emission hole.

Claims (1)

[Scope of utility model registration request] A recessed part having an open part that is recessed from the bottom part and opened in one direction is formed in the bottom part of the equipment case containing the sound alarm device, and the bottom face of this recess part is used to emit the sound of the sound alarm device. A small electronic device equipped with a sound reporting device formed with a sound hole.