JP2019080254A - Speaker with light-emitting function - Google Patents

Abstract

To provide a speaker with a light-emitting function that does not require a wiring work of a light source for LED light emission, can perform light emission linked with music, and, especially, is suitable as an on-vehicle speaker.SOLUTION: Multiple pillars 3 are extended from an upper end of a cylindrical housing 1 so as to support a top board 4 at the upper end. A circular conic reflection plate 5 is arranged on a lower surface of the top board 4 so as to allow vertices of the cone to face a speaker unit 2. Multiple LEDs 6 are arranged in the periphery of the top board 4 and a power source rectified through a double voltage circuit after branching from a drive cord of the speaker unit 2 is used for a light emission power source of the LEDs 6 concerning a speaker with a light-emitting function.SELECTED DRAWING: Figure 1

Description

  The present invention is a speaker excellent in the design of a housing and excellent in the decorativeness using a light emitting element such as an LED, particularly when used as a car-mounted speaker, the ease of work such as wiring at the time of installation The present invention relates to a speaker with a light emitting function that reduces failures such as breakage and the like.

  In the speaker, the applicant has conventionally used a pipe-type casing without any deterioration of sound due to generation of resonance frequency and no unevenness in sound pressure level in all directions (omnidirectional) It proposed (refer patent document 1).

  In the speaker of Patent Document 1 described above, a speaker unit having a diameter substantially equal to the cylindrical diameter of the casing is externally attached to one end (upper end) of the cylindrical casing and sealed, and a sound absorbing material is provided on the inner surface of the casing. Furthermore, a substantially conical reflecting plate is provided at the upper end so that the cylindrical tip is opposed to the speaker unit, and since the speaker unit has the same diameter as the cylindrical housing, air is a plane wave inside the cylindrical housing There is no influence of transmission resonance and the like, and there is also an advantage that the sound is diffused in all directions by the conical reflector and the specific directivity is lost (all directivity).

  That is, there is no change in resonance frequency due to the total length of the pipe, and a pipe-type speaker like Patent Document 1 can be applied not only to large-sized speakers for holes but also to small-sized speakers such as on-vehicle speakers. In addition, since there is no specific directivity due to omnidirectionality, even when a large number of people are riding in a narrow space in a vehicle such as a passenger car or a bus, there are few extreme fluctuations in sound due to the seating position. Is also optimal.

JP, 2005-260627, A

  By the way, since a car-mounted audio system including a car-mounted speaker or the like is often used almost to the life of the car once it is installed, excellent design is required. Further, in recent years, with the widespread use of low power consumption and long life LEDs, decorativeness by the light emission of the LEDs has come to be easily obtained for devices and small articles in a car.

  Since the speaker of Patent Document 1 can be miniaturized with a cylindrical appearance, it can be adapted for use as a small speaker with a simple appearance, and the in-vehicle speaker is mainly installed behind the rear seat. Although there is little chance of being seen by a passenger while driving, they are seen from the outside through the rear glass of the car, and as a function that attracts fellows, third parties, or passers-by, etc. who ride a vehicle following them. A speaker may have a light emitting function by an LED.

  In that case, in order to enhance the decorativeness and to attract attention, it is necessary to make the LEDs blink regularly or irregularly, or to make the plurality of LEDs blink in a regular pattern, instead of just making the LEDs emit light. There are many.

  However, in order to make these decorative LEDs emit light, a power supply is required. In that case, in order to make it emit light by energization from the power supply linked to the activation of the car accessories and audio, the power cord is I have to get around to the speakers.

  It is a difficult task to wire and fix these power cords from the front to the back of the car, and wiring is required separately from the speaker drive cords, and both the LED power cords and the speaker drive cords Wiring makes the whole thicker, which makes wiring in a car more difficult.

  In addition, when the wiring increases, the probability of disconnection accident in the car also increases, and if the power cord of one LED of the two stereo type speakers is broken and it does not emit light, only one side emits light, and it sees from the outside There is also the disadvantage that the user may feel at a glance that the vehicle has been broken.

  Furthermore, although the light emission pattern of the LED can generally be easily controlled by setting of various control elements, it may feel uncomfortable if the sound emitted from the speaker does not match the light emission pattern.

  In order to make the light emission pattern of the LED interlock so as not to be uncomfortable according to the strength of the sound of music, such a function is necessary for the car audio itself, and in the case of a general car audio without the function, it is interlocked with the music The light emission pattern of the LED is impossible.

  Therefore, the object of the present invention is to solve the above-mentioned problems, and although it has an LED light emitting function, the wiring operation of the power supply for LED light emission is unnecessary, and light emission interlocking with music can be performed. An object of the present invention is to provide a light-emitting speaker suitable as an in-vehicle speaker.

  In order to solve the above-mentioned problems, the invention according to claim 1 is a power supply in which one or a plurality of LEDs are disposed on the outer surface of the casing of the speaker, branched from the drive cord of the speaker unit and rectified through the voltage doubler circuit. Is a light emission power source of the above-mentioned LED.

  According to the invention of claim 2, in the speaker with light emitting function according to claim 1, a speaker unit having substantially the same diameter as the casing is installed outward at the upper end portion of the cylindrical casing, and the casing The lower end of the case is opened or a gap is provided, and a plurality of pillars are extended from the upper end of the housing to support the top plate at the upper end of the pillar, and the conical reflector on the lower side of the top plate It installs so as to oppose the said speaker unit, and employ | adopts the structure which arrange | positioned multiple LED around the said top plate.

  According to the invention of claim 1, it is possible to give the light emitting function of the LED to the speaker without the power supply and the wiring for the LED, and in particular when installing as a car-mounted speaker, only the wiring installation work of the cord for driving the speaker unit Installation work is easy.

  In addition, since the LED is supplied with power through the voltage doubling circuit only when the sound pressure level of sound is high, that is, the drive voltage to the speaker unit is a certain level or more, it does not emit light when music is stopped and Since the LED emits and disappears according to the strength of the sound, the pattern and timing of the music and the LED emission match, and there is no sense of incongruity that occurs when the LED is driven by a separate power source or control different from conventional music. .

  Furthermore, since the sound drive code and the LED light emission code are shared, one installation is required as compared to the case where the code is drawn separately, and the probability of disconnection is reduced, and the sound is generated when the code is disconnected. In the case of a stereo type, for example, when one side does not emit sound, one side does not emit light, so that disconnection can be easily noticed.

  Next, according to the second aspect of the present invention, a speaker is used which has an effect and a 360.degree. Spread sound without specific directivity, and the LED in the vicinity of the top of the speaker is made to emit light to spread the sound. It becomes possible to express not only in light but also in the car speaker and other various applications.

It is a perspective view which shows the principal part of the speaker with a light emission function of this invention. It is a front view which shows the principal part of the speaker with a light emission function of this invention. It is a circuit diagram for making the LED of this invention emit light.

Hereinafter, an embodiment of the present invention will be described based on the attached drawings.
FIGS. 1 and 2 show the vicinity of the upper end portion which is the main portion of the speaker with light emitting function of the present invention, and the upper end portion of the cylindrical case 1 has a speaker unit 2 of substantially the same diameter as the case 1. Is installed upward, and although not shown, the lower end portion of the housing 1 is opened or a gap is provided so that air can be conducted.

  Further, four pillars 3 are extended in the vertical direction from four places around the upper end of the housing 1, and the upper end of the pillar 3 supports the circular top plate 4 having substantially the same diameter as the housing There is. A substantially conical reflecting plate 5 is disposed on the lower surface of the top plate 4 so that the apex of the cone faces the speaker unit 2, and eight LEDs 6 are equally spaced around the top plate 4. .

  The light emission power supplies of the eight LEDs 6 are branched from the driving electrical cord 7 of the speaker unit 2 as shown in the circuit diagram of FIG. 3 and rectified through the voltage doubler circuit 8 using two diodes and two capacitors. Then, a DC voltage is taken out, and a resistor 9 (330 Ω) is connected in series to each LED 6 to form an LED driving power supply.

  The drive electric cord 7 of the speaker unit 2 serving as the music signal of the speaker has a maximum of ± 12 V at AC and can emit the LED 6 completely without an external power supply, and the rectification is performed by the voltage doubler circuit 8 using a diode. If done, it will be +12 V of direct current.

  In addition, the speaker unit 2 can be driven without affecting the music signal by controlling the current to 1/100 A or less by combining the resistor 9 in series with the wiring to each element of the branched LED 6.

  In addition, the power supply cord for driving the LED can be led from the side of the housing 1 having the speaker unit 2 to the inside of the top plate 4 on which the LED 6 is installed by passing through the inside of the hollow column 3.

  The way to determine the resistance value of the resistor 9 connected to the LED 6 is that the voltage varies depending on the color of the LED 6, so that the resistance value is determined so that a predetermined range of voltage is applied and overcurrent does not occur. In some cases, it is also possible to combine two or three LED elements in series with one wiring.

  The configuration of the speaker according to this embodiment is as described above, and as an example of its use, an installation example for a car audio system will be described.

  Although the speaker according to the present invention shown in FIGS. 1 to 3 is the cylindrical case 1, as described above, the size and the length do not cause problems such as resonance, so that the size suitable for vehicle Even if it is miniaturized, it does not affect the sound quality, and the diameter of the casing 1 is about 7 to 15 cm and the length is about 30 to 70 cm.

  Further, among the sound frequencies, middle and high tones spread as a spherical wave from the front of the speaker unit 2 and diffuse in all directions with the upper conical reflector, while the bass is the speaker unit from the back of the speaker unit 2 It is transmitted as a plane wave inside the case 1 which has almost the same diameter as 2 and diffuses in all directions from the lower end (not shown), so the sound spreads 360 °, there is no directivity of special sound, and the speaker installation place Absent.

  Therefore, the position to be mounted on the vehicle is usually behind the rear seat, but it does not choose the location from the characteristic that the sound spreads at 360 °. For example, in the case of stereo type, stand along the rear face of the driver's seat and the passenger's seat If set, the occupants of the rear seat can enjoy the light emission by the LED as well as the music.

  In addition, wiring to the speaker is simply connected to the same cord for driving the speaker as before, and no power cord for light emission etc. is required, and cord routing work in the car is easy, and with the existing speaker When replacing, it is possible to use the installed speaker cord as it is.

  An example of the installation of the speaker according to the present invention as in-vehicle audio is as described above, and the user of the car gets on the car, and simply starts the audio and just starts the music without operating any special switch etc. The LED 6 emits light.

  Further, since the on / off of the blinking of the LED 6 is matched to the strength of the music signal, the blinking of the LED 6 not linked to the music does not occur and there is no sense of incongruity.

  The embodiment of the present invention is as described above, but the present invention is not limited to the above embodiment, and can be appropriately modified and implemented within the scope of the object of the present invention.

1 case 2 speaker unit 3 pillar 4 top plate 5 reflective plate 6 LED
7 Driving electric code 8 voltage doubling circuit 9 resistance

Claims (2)

  One or more LEDs are disposed on the outer surface of the casing of the speaker, and a power source branched from the drive cord of the speaker unit and rectified through a voltage doubler circuit is used as a power source for light emission of the LED. Speaker with function.   A speaker unit of approximately the same diameter as the casing is installed outward at the upper end of the cylindrical casing, the lower end of the casing is opened or a gap is provided, and a plurality of columns are extended from the upper end of the casing The top of the column is supported by the top plate, and a conical reflector is placed on the bottom of the top plate so that the apex of the cone faces the speaker unit, and a plurality of LEDs are arranged around the top. A speaker with a light emitting function according to claim 1, characterized in that.

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