CN-115708364-B - Panel loudspeaker

Abstract

A panel speaker is provided that reduces contact of a vibration actuator with a rear cabinet. A panel speaker includes a panel, a vibration actuator, a screw for fastening the vibration actuator to the panel, and a rear cabinet disposed on a side of the vibration actuator opposite to the panel, the rear cabinet having a projection projecting toward the vibration actuator at a portion facing a head of the screw.

Inventors

• IKEDA SHINICHI

Assignees

• 株式会社电装天

Dates

Publication Date

20260505

Application Date

20220302

Priority Date

20210820

Claims (5)

1. 1. A panel-form loudspeaker having: a panel; a vibration actuator; a screw for fastening the vibration actuator to the panel, and A rear chassis disposed on a side of the vibration actuator opposite to the panel, The rear case has a projection projecting toward the vibration actuator side at a portion facing the head of the screw, The head of the screw and the boss of the rear chassis are arranged in a state of being spaced apart in a front-rear direction of the panel speaker, which is a direction from the panel toward the vibration actuator, The screw and the vibration actuator are electrically insulated.
2. 2. The panel-form loudspeaker of claim 1 wherein, The protruding portion is a pushing portion that pushes the rear chassis toward the vibration actuator.
3. 3. The panel-form loudspeaker of claim 1 wherein, The convex portion is a bending portion of the rear chassis that is bent toward the vibration actuator side.
4. 4. The panel-form loudspeaker of claim 1 wherein, The convex portion is a spacer provided on the vibration actuator side of the rear chassis.
5. 5. The panel-form loudspeaker of claim 4 wherein, The spacer is an insulator.

Description

Panel loudspeaker Technical Field The present invention relates to a panel speaker. Background There is a display speaker in which a display panel of a display is vibrated by an actuator (vibration actuator) using a piezoelectric element, thereby taking the display as a speaker. In the display speaker, a vibration actuator is mounted on the back surface of a display panel (vibration panel). Thereby, the vibration of the vibration actuator can be transmitted to the display panel. Prior art literature Patent literature Patent document 1 Japanese patent laid-open publication No. 2010-171927 When an external force is applied to the display panel, the vibration actuator on the back surface of the display may come into contact with a rear chassis, which is a part of a member that covers the display speaker and is present on the back surface of the vibration actuator. If a short circuit occurs between the vibration actuator and the display panel, there is a problem in that the vibration actuator does not vibrate. Disclosure of Invention The object of the present invention is to provide a panel speaker which reduces the contact of a vibration actuator with a rear cabinet. In order to solve the above problems, the present invention adopts the following means. In other words, the first aspect is a surface plate speaker including: a panel; a vibration actuator; a screw for fastening the vibration actuator to the panel, and A rear chassis disposed on a side of the vibration actuator opposite to the panel, The rear case has a projection projecting toward the vibration actuator side at a portion facing the head of the screw. According to the present invention, it is possible to provide a panel speaker that reduces contact of a vibration actuator to a rear cabinet. Drawings Fig. 1 is a diagram showing a configuration example 1 of a display speaker 10 according to the present embodiment. Fig. 2 is a diagram showing a configuration example 2 of the display speaker 10 according to the present embodiment. Fig. 3 is a diagram showing a configuration example 3 of the display speaker 10 according to the present embodiment. Symbol description- 10. Display loudspeaker 100. Display panel 110. Main body part 120. Bracket mounting part 130. Screw mounting part 200. Bracket 210. Main body part 220. Foot portion 300. Vibration actuator 310. Vibrating plate 320. Piezoelectric element 330. Piezoelectric element 400. Spacing piece 500. Screw bolt 600. Rear chassis 610. A spacer. Detailed Description Hereinafter, embodiments of the present invention will be described with reference to the drawings. The configuration of the following embodiment is an example, and the present invention is not limited to the configuration of the embodiment. Here, a case where the vibration actuator is provided on a display panel (vibration panel) of the display and the display is caused to function as a display speaker will be described. A display speaker is a device that vibrates a display panel by a vibration actuator (actuator) to output (release) sound waves from the display panel. The display speaker is an example of a panel speaker. The panel speakers are, for example, speakers that vibrate a planar panel such as a display panel to output sound. The back side of the display speaker is covered with a rear cabinet or the like. < Embodiment > (Structural example 1) Fig. 1 is a diagram showing a configuration example 1 of a display speaker 10 according to the present embodiment. Fig. 1 is a side view of display speaker 10 from the side. The display speaker 10 includes a display panel 100, a bracket 200, a vibration actuator 300, a spacer 400, a screw 500, and a rear cabinet 600. In the display speaker 10, the bracket 200, the vibration actuator 300, and the spacer 400 are overlapped in this order from the display panel 100 side. Further, the rear chassis 600 is supported by the display panel 100 and the like. The rear chassis 600 is not in contact with the screw 500 and the vibration actuator 300 in a normal state (a state in which no external force is applied to the display panel 100). The display panel 100 includes a main body portion 110, a bracket mounting portion 120, and a screw mounting portion 130. Bracket 200 includes a body portion 210 and a foot portion 220. The vibration actuator 300 includes a vibration plate 310, a piezoelectric element 320 attached to a surface (a first surface) of the vibration plate 310 on the display panel side, and a piezoelectric element 330 attached to a surface (a second surface) of the vibration plate 310 on the opposite side of the first surface. The display speaker 10 sequentially configures the display panel 100, the bracket 200, the vibration actuator 300, the spacer 400, and is fixed by the screw 500. A plurality of brackets 200, vibration actuators 300, spacers 400, and screws 500 may be mounted on one display panel 100. Here, the direction from right to left in fig. 1 is referred to as the x direction, the dire