JP2006157841A - Speaker unit with lighting function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a speaker unit with lighting function in which a lighting source and a speaker unit are integrated. <P>SOLUTION: A material of tympanum of a voltaic cone type speaker unit is made a light transmission material, and a small size light source such as a white light-emitting diode is put in a gap between a backside of the tympanum and an inside of a frame, so that both are integrated. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electrodynamic cone type speaker unit having an illumination function.

The inventor invented and applied for a patent for a lighting desk with a built-in speaker in which a speaker unit is horizontally inserted and fixed in the upper surface opening of a hollow support that supports a light source of a lighting desk that is one of interior furniture It is in.
Japanese Patent Application No. 2004-156892; not published

Problems to be solved by the invention

  Both ceiling-mounted speakers and ceiling lighting, rear speakers for home theater and lighting floor desk lamps, small speakers for monitoring and desk lamps for desk lighting, etc. are installed in almost the same place. These occupy the room space twice, hinder space saving, and seriously harm the aesthetics of the room.

Means for solving the problem

  As a means to solve this problem, a light source or a frame support column mounted on a printed circuit board is used between the back surface of the diaphragm and the electrodynamic cone type speaker unit using a material that transmits light to the diaphragm of the electrodynamic cone type speaker unit. A light source was installed on the inner surface of the speaker, and the speaker unit and the illumination light source were integrated to solve the problem.

The invention's effect

  By integrating the illumination light source and the speaker unit, it is possible to achieve the respective objects with one apparatus without changing the image of the conventional speaker and the illumination desk lamp and the original application. In addition, there is also an effect of expanding the effective space of the room occupied by the speaker system. Furthermore, the balance of the room can be improved, and the effect as an interior is improved.

  FIG. 1 is a sectional view of a speaker unit with an illumination function according to the present invention. In FIG. 1, 1 is a yoke, 2 is a permanent magnet, 3 is a center pole, and constitutes a magnetic circuit of an electrodynamic cone type speaker unit. Reference numeral 4 denotes a voice coil in which a copper wire is wound around a hollow cylindrical bobbin, which is inserted into a gap between a yoke and a center pole of a magnetic circuit and vibrates in the lateral direction in accordance with an audio signal. The centering damper 6 is for keeping the voice coil at the center of the gap and vibrating the diaphragm 5 in the correct axial direction. The conical diaphragm 5 which is gradually opened toward the front is placed on the centering damper 6 and generates a sound wave when it vibrates. The edge 8 is provided in order to maintain a buffer between the diaphragm and the frame and an appropriate gap. The voice coil 4, the diaphragm 5, and the centering damper 6 constitute a vibration system of the speaker unit. In addition, there is a frame 9 for integrating the magnetic circuit and the vibration system. The above structure is the same as that of a normal electrodynamic cone type speaker unit.

Reference numeral 10 denotes a circular donut-shaped printed substrate having no inner side, and is placed in the gap between the centering damper 6 and the diaphragm 5 in parallel with the centering damper, and the outer peripheral portion is fixed to a part of the frame 9. A gap that does not hinder the movement of the damper is required between the centering damper and the printed board.
In addition, since the damper hardly moves on the outer periphery of the centering damper, the gap may be small.

  FIG. 2 is a view of the printed circuit board 9 as viewed obliquely from above. A plurality of surface-mounted white light-emitting diodes 10 and current limiting resistors 11 are mounted on the surface of the printed circuit board, and each is connected to the power line of the surrounding printed pattern. By applying power to the anode lead line 12 and the cathode lead line 13 connected to the power line, the white light emitting diode 10 on the printed circuit board emits light. The white light-emitting diode is mounted along the inner circumference on the circular ring of the printed circuit board in order to prevent the light beam from being blocked by an edge or the like.

  The light emitted from the white light emitting diode 10 strikes the diaphragm 5, but in the present invention, since a material capable of transmitting light is used for the diaphragm, the luminous flux can pass through the diaphragm. However, as a material for the diaphragm, it is necessary to provide light transmission and acoustic characteristics as a speaker like polypropylene.

  In order to make the radiation of light to the outside more efficient, the lighting effect can be further enhanced by applying a reflective paint and application or reflective metal foil to the inner wall of the frame of the speaker unit.

  With the above configuration, an illumination function can be provided without changing the image of the conventional electrodynamic cone type speaker unit.

  FIG. 3 shows an embodiment of the second speaker unit with illumination function according to the present invention. The magnetic circuits 1 to 8 and the vibration system constituting the electrodynamic cone speaker unit operate in the same manner as described in the first embodiment, and are denoted by the same symbols as those in the first embodiment. A bullet-type white light emitting diode 20 is attached inside the frame 7 as an illumination light source.

  As shown in FIG. 4, the frame of the electrodynamic cone type speaker unit has 4 to 6 frame support pillars 30, which connect the frame surface portion 31 and the magnetic circuit portion 32. By attaching a plurality of bullet-type white diodes 20 to each frame support column, the electrodynamic cone type speaker unit can have an illumination function. The white light emitting diode 20 is mounted obliquely upward or downward as shown in FIG. 3 so that the light speed can be irradiated from the upper surface of the speaker unit through the diaphragm of light transmitting material without being blocked by an edge or the like. It has been. In order to efficiently radiate light from the diode, the illumination effect can be enhanced by applying a reflective paint or applying a reflective metal foil 21 or the like to the remaining portion of the inner wall of the frame.

  In the embodiment of the present invention, the white light emitting diode is used as the light source. However, the light source is not limited to this, and other light emitting diodes, small halogen lamps, small light bulbs and the like are also included. In addition, the diaphragm is not limited to a conical shape, but an elliptical or planar type is also included in the scope of the present invention.

It is sectional drawing which shows 1st Embodiment by this invention. It is a figure which shows the printed circuit board carrying the white light emitting diode by this invention. It is sectional drawing which shows 2nd Embodiment by this invention. It is a figure which shows the speaker frame attachment of the white light emitting diode by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Yoke 2 Permanent magnet 3 Center pole 4 Voice coil 5 Diaphragm 6 Centering damper 7 Speaker frame 8 Edge 9 Donut type printed circuit board 10 Surface mount type white light emitting diode 11 Current limiting resistor 12 Anode lead wire 13 Cathode lead wire 20 Cannonball type White light emitting diode 21 Reflective metal foil 30 Frame support column 31 Speaker unit surface 32 Speaker unit magnetic circuit

Claims (4)

  In the electrodynamic cone type speaker unit, the material of the diaphragm of the electrodynamic cone type speaker unit is a light transmission type material, and the gap between the back surface of the light transmission type diaphragm and the inside of the frame of the electrodynamic cone type speaker unit. A speaker unit with an illumination function, characterized by having a light source for illumination.   2. The speaker unit with illumination function according to claim 1, wherein the illumination light source is a printed circuit board on which a plurality of surface-mounted white light emitting diodes and a plurality of current limiting resistors are mounted.   2. The speaker unit with illumination function according to claim 1, wherein the illumination light source is a bullet-type white light emitting diode attached to a frame support column of the electrodynamic cone type speaker unit.   2. The speaker unit with illumination function according to claim 1, wherein the inner wall of the frame of the electrodynamic cone type speaker unit is coated with a substance that reflects light or a metal foil for reflection is attached.

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