JP2018182401A - Pole with speaker function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pole with a speaker function which can generate high quality sound with excellent waterproofness, weather resistance, and durability, and easy to be heard even at a low volume without an obstacle of a speaker device.SOLUTION: An actuator 15 that generates vibration is fixed to an inner peripheral surface 11a of a hollow pole body 11. As a result, the vibration of the actuator 15 propagates to the pole body 11, and vibrates the surrounding air via the pole body 11, such that it is possible to generate high quality sound that is easy to be heard. In addition, since the actuator 15 that generates vibration is provided inside the pole body 11, even when the actuator is installed near a listener, the actuator does not become an obstacle. Therefore, it is possible to lower the volume and avoid problems such as noise. In addition, since the actuator 15 is provided inside the pole body 11, waterproofness is secured for the actuator 15 and the electronic parts attached thereto, and excellent weather resistance and durability are obtained.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a pole used for a street light, a signboard or the like, and more particularly to a pole having a speaker function capable of converting an electrical signal to sound and emitting it around.

  Generally, a speaker that emits sound may be installed on a pole set up on the ground or the like. For example, Patent Document 1 shows that, in an outdoor self-supporting broadcast amplification apparatus that receives a disaster prevention administrative radio and carries out an amplification broadcast, a speaker that carries out an audio signal broadcast on a pole set on the ground is attached. As a type of speaker, a cone shape in which a cone-shaped diaphragm is in direct contact with air, a horn shape in which a diaphragm is in contact with air through a horn, and the like are known. The speakers installed in the pole in this manner are widely used for announcements and music broadcasts in shopping streets, leisure facilities, schools, stations, and the like.

JP, 2016-46612, A (page 4, FIG. 1)

  However, the prior art speaker attached to a pole or the like as described above has a problem that sound quality is poor, noise is large, and it is difficult to hear. In particular, in a speaker installed outdoors, a vibrating body such as a cone weak to water is often covered by a prevention case or the like, in which case the sound quality is further reduced and it becomes difficult to hear the voice.

  In the past, there have been cases where the volume of the speaker has been increased to compensate for the difficulty of hearing. In that case, for example, there may also be a problem that unpleasant noise propagates to the inside of a nearby store or house. In particular, when a speaker is installed on a pole, it may be difficult to hear sounds near the ground, and a loud noise may be felt on the second floor part of a nearby house or the like which is approximately at the same height as the speaker.

  In the prior art speaker, it may be considered to lower the height of the installed speaker in order to improve the sound quality near the ground, but in that case, the speaker may be in the way and passersby may come into contact with the speaker. . In the case of a speaker installed outdoors, the speaker and electronic components attached thereto are required to be installed with sufficient waterproofness, weather resistance and durability to withstand wind and rain and solar radiation.

  The present invention has been made in view of the above-mentioned circumstances, and the purpose of the present invention is high-quality sound which is excellent in waterproofness, weather resistance and durability without being disturbed by the speaker device, and easy to hear even with a small volume. An object of the present invention is to provide a pole with a speaker function capable of generating sound.

  The pole with a speaker function of the present invention is characterized in that an actuator that generates vibration is fixed to the inner circumferential surface of the hollow pole.

  According to the pole with a speaker function of the present invention, an actuator that generates vibration is fixed to the inner circumferential surface of the hollow pole. As a result, the vibration of the actuator is transmitted to the pole, and the surrounding air is vibrated through the pole to generate a high-quality sound that is easy to hear. In particular, a flat wave-like air vibration close to a natural wave is generated from the vicinity of the outer peripheral surface of the pole, so a clear sound wave can be obtained which has little noise due to interference and can reach far even with small volume.

  In addition, since the actuator that generates vibration is provided inside the pole, it does not get in the way even if it is installed near the listener. As a result, the volume can be reduced to avoid problems such as noise. Further, by providing the actuator inside the pole, waterproofness is secured for the actuator and the electronic components attached thereto, and excellent weather resistance and durability can be obtained.

  Further, the actuator may have a diaphragm and a vibration generating unit for vibrating the diaphragm, and the diaphragm may be fixed to the inner circumferential surface of the pole. Thereby, the vibration of the vibration generating portion is efficiently propagated to the inner peripheral surface of the pole via the diaphragm, and high-quality sound from the pole can be obtained.

  Further, the vibration generating portion is fixed to one main surface side of the diaphragm and vibrates in the thickness direction of the diaphragm, and in the diaphragm, the other main surface opposite to the one main surface is the inner circumferential surface Alternatively, it may be fixed to be in contact with the mounting portion provided on the inner circumferential surface directly or through a cushioning material. Thereby, the vibration by the actuator is efficiently transmitted to the pole.

  Also, a plurality of actuators may be provided, and different vibrations may be emitted from the respective actuators. Thereby, a three-dimensional, realistic sound effect can be obtained.

It is a front view of a street lamp device using a pole with a speaker function concerning an embodiment of the present invention. It is a partial cross-sectional perspective view which shows actuator vicinity of the pole with a speaker function which concerns on embodiment of this invention. It is the (A) front view of the actuator used for the pole with a speaker function concerning the embodiment of the present invention, and the (B) side view. It is a cross-sectional view which shows actuator vicinity of the pole with a speaker function which concerns on embodiment of this invention. It is a cross-sectional view which shows actuator vicinity of the pole with a speaker function which concerns on other embodiment of this invention.

Hereinafter, a pole with a speaker function according to an embodiment of the present invention will be described in detail based on the drawings.
FIG. 1 is a front view of a street lamp device 1 using a pole 10 which is a pole with a speaker function according to an embodiment of the present invention.

  As shown in FIG. 1, the street lamp device 1 includes a pole 10 erected on the ground G, a lighting device 21 attached to the top of the pole 10, and an imaging device 22. The street lamp device 1 is installed in, for example, a shopping street, a leisure facility, a park, a sidewalk, a school, a station, a parking lot, etc., and is used for various announcements and music broadcasting. Used to capture the surrounding situation.

  The pole body 11 of the pole 10 is, for example, a hollow column configured of a metal pipe such as a steel pipe. Inside the pole body 11, an actuator 15 for causing the pole 10 to exhibit a speaker function is provided. The actuator 15 is disposed, for example, at a height near the head of the pedestrian P who is a listener. As a result, the pedestrian P can be made to hear easily and the sound can be emitted, and the volume can be lowered compared to the speaker of the prior art to suppress unpleasant noise to the neighborhood.

  The illumination device 21 is, for example, an LED illumination device or the like. The imaging device 22 photographs the periphery of the street lamp device 1, and may have, for example, a communication function capable of transmitting a photographed image, and may be capable of remote control by the communication function.

  The street lamp device 1 includes a control device (not shown) for generating sound, a control device (not shown) for controlling the illumination device 21 and the imaging device 22, sensors, a power supply device and the like. Those devices may be housed inside the pole body 11. In addition, the street lamp device 1 may be provided with other devices (not shown) such as a solar power generation device or a wind power generation device, and these devices may be attached to the pole 10.

  In addition, the street light apparatus 1 shows an example of the apparatus which utilizes the pole 10 which concerns on embodiment of this invention, and the use of the pole 10 is not limited to a street light etc. FIG. The pole 10 is used, for example, for poles for signs, poles for various signs, posts for traffic lights, posts for power lines and telecommunication lines, posts for various structures, and others, in addition to street lights and the like. It is good. Also, the pole 10 is not limited to outdoor use, and may be installed and used indoors.

  FIG. 2 is a partial cross-sectional perspective view showing the vicinity of the actuator 15 of the pole 10. As shown in FIG. 2, the pole body 11 of the pole 10 is formed in a substantially square tubular shape, and an actuator 15 that generates vibration is attached to the inside thereof. Since the actuator 15 is provided inside the pole main body 11, it does not get in the way even if installed at a position close to the pedestrian P (see FIG. 1) who is a listener. As a result, as described above, the volume can be reduced to avoid problems such as noise.

  Further, by providing the actuator 15 and an electronic component (not shown) attached thereto in the interior of the pole body 11, waterproofness is secured for the actuator 15 etc., and excellent weather resistance and durability can be obtained.

  The actuators 15 may be provided at a plurality of locations inside the pole body 11. For example, in the present embodiment, two actuators 15 are provided, and are fixed at opposing positions of the inner circumferential surface 11 a of the pole body 11. As described above, when a plurality of actuators 15 are provided, different vibrations may be emitted from the respective actuators 15. Thereby, a three-dimensional, realistic sound effect can be obtained.

  FIG. 3 (A) is a front view of the actuator 15 used for the pole 10, and FIG. 3 (B) is a side view of the actuator 15. As shown in FIGS. 3A and 3B, the actuator 15 has a vibration generating unit 16 that generates vibration, and a diaphragm 17 that is vibrated by the vibration generating unit 16.

  The vibration generating unit 16 receives an electrical signal to cause vibration for generating a sound wave. The vibration generating unit 16 is fixed to one main surface of the diaphragm 17 and vibrates in the thickness direction of the diaphragm 17. As a drive method of the vibration generation part 16, various methods, such as an electrodynamic type, an electrostatic type, a piezoelectric type, a ribbon type, an ion type, are employable, for example.

  The vibrating plate 17 is a substantially rectangular plate-like member, and as described above, the vibration generating unit 16 is fixed to one of the main surfaces of the vibrating plate 17 so as to be able to transmit vibrations. The diaphragm 17 has a function as a support member for attaching the vibration generating unit 16 to the pole 10 (see FIG. 2) and a function of transmitting the vibration of the vibration generating unit 16 to the pole 10.

  The other principal surface of diaphragm 17 opposite to one of the principal surfaces to which vibration generating unit 16 is attached serves as attachment surface 17 a for attaching actuator 15 to pole 10. The attachment surface 17a is formed in a substantially planar shape. Further, in the diaphragm 17, a mounting hole 18 for fixing the actuator 15 to the pole 10 is formed. A fastening member (not shown) such as a screw is inserted into the mounting hole 18.

  Glass coating etc. may be given to actuator 15, and vibration generating part 16 grade may be covered by glass coating etc. As a result, the water resistance and durability of the actuator 15 are further enhanced.

  FIG. 4 is a cross-sectional view showing the vicinity of the actuator 15 of the pole 10. As shown in FIG. 4, the actuator 15 is fixed so that the attachment surface 17 a of the diaphragm 17 is in contact with the inner circumferential surface 11 a of the pole main body 11 directly or via a cushioning material or the like (not shown).

  The diaphragm 17 and the pole body 11 may be fixed by a fastening member such as a screw (not shown) or may be fixed by an adhesive or the like. Since the diaphragm 17 of the actuator 15 is fixed to the inner peripheral surface 11 a of the pole body 11, the vibration of the vibration generating unit 16 is efficiently propagated to the inner peripheral surface 11 a of the pole body 11 via the diaphragm 17, High quality sound can be obtained from the pole body 11.

  That is, the pole body 11 functions as a vibrator that vibrates air to generate sound, and the vibration of the actuator 15 vibrates the surrounding air via the pole body 11 to generate high-quality sound that is easy to hear be able to. In particular, in the present embodiment, a plane wave-like air vibration close to a natural wave is generated from the vicinity of the outer peripheral surface of the pole body 11, so a clear sound wave can be obtained which has little noise due to interference and can reach far even with small volume.

  FIG. 5 is a cross-sectional view showing the vicinity of an actuator 15 of a pole 110 which is a pole with a speaker function according to another embodiment of the present invention. In addition, about the component which produces | generates the effect | action and effect similar to embodiment already demonstrated or an effect, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 5, the pole main body 111 is formed in a substantially circular shape in cross section, that is, in a substantially circular tubular shape. When the pole main body 111 is formed in a substantially circular tubular shape, the actuator 15 may be fixed to the attachment portion 12 formed inside the pole main body 111. The mounting portion 12 has a substantially flat form, and is fixed to the inner peripheral surface 111 a of the pole main body 111 by welding, for example. Thereby, the vibration of the actuator 15 can be efficiently transmitted to the pole body 111, and a clear voice with high sound quality can be generated from the pole body 111. In addition, as a shape of the pole main body 111, various forms other than substantially cylindrical shape etc. are employable.

  The present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 street light device 10, 110 pole 11, 111 pole main body 11a, 111a inner peripheral surface 12 attachment part 15 actuator 16 vibration generation part 17 diaphragm 17a attachment surface 21 illumination device 22 imaging device

Claims (4)

  An actuator pole generating a vibration is fixed to an inner circumferential surface of a hollow pole, and the pole with a speaker function.   The pole with the speaker function according to claim 1, wherein the actuator includes a diaphragm and a vibration generating unit that excites the diaphragm, and the diaphragm is fixed to the inner peripheral surface. . The vibration generating unit is fixed to one main surface side of the diaphragm and vibrates in the thickness direction of the diaphragm.
The diaphragm is fixed so that the other main surface opposite to the one main surface is in contact with the inner peripheral surface or a mounting portion provided on the inner peripheral surface directly or through a cushion material. The pole with a speaker function according to claim 2 characterized by things.   The pole with a speaker function according to any one of claims 1 to 3, wherein a plurality of the actuators are provided, and different vibrations are emitted from the respective actuators.

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