JPH0993679A - Microphone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To light effectively a light emitting element with little power consumption. SOLUTION: A power supply voltage supplied from a power supply 6 is fed to a switch section 3, a switch section 4 and a lighting section 5. When a voice signal received by a microphone unit 22 reaches a prescribed level or over, a control signal whose level is '0' converted into a pulse voltage of a period 8 is fed to 8 light emitting diodes LED0 -LED7 with alternate arrangement of red and green diodes by a decoder 43, and each of the light emitting diodes is lighted sequentially and repetitively at a prescribed period. When the input voice signal does not reach a prescribed level, the light emitting diodes LED0 -LED7 remain going-off. Thus, in comparison with a conventional system where all light emitting elements are lighted/extinguished at once, the light emitting diodes LED0 -LED7 are lighted effectively with less power consumption.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a microphone. More specifically, the present invention relates to a microphone that can effectively light a light emitting element with low power consumption by sequentially and repeatedly lighting a plurality of light emitting elements when an electric signal output from the microphone unit is a predetermined value or more. It is a thing.

[0002]

2. Description of the Related Art Conventionally, according to the sound pressure level of the input voice,
2. Description of the Related Art Microphones are known that have various elegances, such as changing the luminous intensity of a light emitting element mounted on the head and changing the blinking speed of the light emitting element.

[0003]

However, in the above-described microphone, since all the light emitting elements are turned on or off at once, the microphone consumes a large amount of power and is not suitable for being applied to a wireless microphone driven by a battery. At the same time, the flashing of the light source was monotonous and hardly changed, and there was a dislike that it was not interesting as a microphone used for entertainment such as karaoke.

Therefore, the present invention provides a microphone capable of effectively lighting a light emitting element with low power consumption.

[0005]

A microphone according to the present invention includes a microphone unit for converting a voice input into an electric signal and a first control when the level of the electric signal output from the microphone unit is a predetermined value or more. A first switch section that outputs a signal and outputs a second control signal when the level does not reach a predetermined value; a lighting section that has a plurality of light emitting elements; and a first control section that controls the first switch section. When a signal is output, control is performed so that the plurality of light emitting bodies are sequentially turned on, and when the second control signal is output from the first switch unit, all of the plurality of light emitting elements are not turned on. And a second switch unit for controlling.

Further, the microphone according to the present invention includes a microphone unit for converting a voice input into an electric signal,
A lighting part having a plurality of light emitting elements, a first switch part for controlling the plurality of light emitting elements to be sequentially lighted repeatedly, and lighting when the level of the electric signal output from the microphone unit is equal to or higher than a predetermined value. Section and a second switch section that supplies power to the first switch section.

When the level of the electric signal output from the microphone unit is equal to or higher than a predetermined value, the plurality of light emitting elements are controlled so as to be repeatedly turned on. When the level does not reach the predetermined value, the plurality of light emitting elements are controlled so as not to be turned on.

When the level of the electric signal output from the microphone unit is equal to or higher than a predetermined value, power is supplied from the second switch section to the lighting section and the first switch section.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an external view of a microphone 10 as an embodiment.

The grip portion 11 is provided with a slide switch 12 for switching between three types of modes, that is, an off mode, an on mode and a flash mode.
The on mode is a normal tone switch on mode. In this mode, an audio signal converted into an electrical signal is output from the code 10b.

The microphone head 10a includes a grill bottom 15, which will be described later, a net bottom 18a sandwiched between the grip 11 and the grill bottom 15, and a protrusion 15.
It is sandwiched between the grill top 16 described later, which is screwed with the screw portion of b, and the grill bottom 15 and the grill top 16, and when a sound of a predetermined level or more is input in the flash mode, the light is emitted from a plurality of internal light emitting elements described later. Window grill 13 for emitting the emitted light to the outside, and fitting portion 16d
And a net top 18b that is fitted to protect the inside.

FIG. 2 shows the internal structure of the head 10a of the microphone 10 of the embodiment shown in FIG.

In the figure, a microphone holder 21 is attached to the upper portion of the grip portion 11. A substrate 19 having a light emitting diode 20 as a light emitting element mounted on its upper surface
Are pressed from above by the microphone unit 22 and are sandwiched between the microphone unit 21 and the microphone holder 21. A grill bottom 15 is screwed to the grip portion 11, and a grill top 16 is screwed to the grill bottom 15. In addition, between the grill bottom 15 and the grill top 16, a window grill 1 that forms a grill with them is formed.
3 are fitted. Further, the grill bottom 15 and the grill top 16 include a wind screen 17, a net top 18b and a net bottom 18 which form an external screen.
a is fitted.

The grill bottom 15 has an annular shape, and protrusions 15a and 15b are provided on the inner circumference of the upper part and the inner circumference of the lower part, respectively. The protrusion 15a and the protrusion 15b are connected to each other at several places on the circumference, and an opening 15c as a sound inlet is provided in a gap between the protrusion 15a and the protrusion 15b other than the connection.
Is formed. The grill top 16 also has an annular shape, and a screw portion 16b is provided on the outer periphery of the lower portion thereof, and a fitting portion 16d is provided on the upper portion thereof. The screw portion 16b and the fitting portion 16d are connected to each other at several points on the circumference, and the gap between the screw portion 16b and the fitting portion 16d other than this connection portion is used as an opening for emitting the light emitting diode 20 inside to the outside. The portion 16c is formed.

A screw portion 11a is provided on the outer periphery of the upper portion of the grip portion 11, and this is a protruding portion 15a below the grill bottom 15.
It is screwed with the screw part formed on the inner circumference of the. The screw part provided on the inner periphery of the upper portion of the protrusion 15b of the grill bottom 15 is
Screw part 16b provided on the lower outer periphery of the grill top 16
Screwed.

An opening 15c is formed on the outer periphery of the grill bottom 15.
At the position corresponding to, the windscreen 17a made of sponge for reducing airflow noise is provided inside and the head 10a
Both of them are fitted between the protruding portion 15a and the outer peripheral portion of the protruding portion 15b so that the net bottom 18a made of metal that protects the outer side is outside. Fitting 16d on top of grill top 16
The inner periphery of the is fitted with a wind screen 17b inside and a net top 18b outside. Further, in the outer periphery of the gap between the protruding portion 15b and the fitting portion 16d,
At a position corresponding to the opening 16c, a substantially transparent window grill 13 having a knurled outer periphery is fitted to scatter the light emitted from the light emitting diode 20 and passing through the opening 16c to be emitted to the outside. Are combined.

The above-mentioned protruding portion 15b forming the grill
By loosening the fitting between the screw part of 16 and the screw part 16b,
Upper windscreen 17b and nettop 18
It is possible to separate the grill top 16 screwed with b from the grill bottom 15 screwed with the lower windscreen 17a and the net bottom 18a.

FIG. 3 is a top view showing the appearance of the substrate 19 shown in FIG.

In the figure, the board 19 is provided with a fitting hole 19a for fitting into the lower portion 22a of the microphone unit 22 at the center. Eight light-emitting diodes 2 on top
Zeros are arranged at equal intervals with the emission direction facing outward. The eight light emitting diodes 20 are four red, four green, and red and green are alternately arranged.

An electric terminal (hereinafter referred to as "foot") 20a of each light emitting diode 20 penetrates to the lower surface of the substrate 19 and is mounted on the lower surface of the substrate 19 by solder 19b as shown in FIG. The fitting hole 19a of the substrate 19 is fitted into the lower portion 22a of the microphone unit 22. Although not shown, the legs 20a of the eight light emitting diodes are connected to a power supply system such as the slide switch 12 via lead wires.

FIG. 4 shows the microphone holder 2 shown in FIG.
FIG. 1 is a perspective view showing an appearance of the apparatus.

In the figure, the eight notches 21b provided on the outer periphery of the upper portion at equal intervals are spaces for the legs 20a of the eight light emitting diodes protruding from the lower portion of the substrate 19. The foot 20a of the light emitting diode is located in each notch 21b as the escape portion, and the foot 20a of each light emitting diode is connected to the electric system through the lead wire.
Further, the fitting hole 21a is adapted to fit with the lower portion 22a of the microphone unit 22, and in the attached state, the board 19 is fixed to the lower portion 22 of the microphone unit 22.
The microphone holder 21 and the microphone unit 22 are sandwiched between the microphone holder 21 and the microphone unit 22 by being fitted into the fitting hole 21a and pressed by the lower step 22b of the microphone unit 22 toward the grip 11.

In the above structure, the substrate 19 to which the eight light emitting diodes 20 are soldered is sandwiched between the rubber microphone holder 21 attached to the upper portion of the grip 11 and the microphone unit 22. The lower part 22a of the microphone unit 22 is fitted and held in the fitting hole 19a. Due to the notch 21b provided on the upper portion of the microphone holder 21, the microphone holder 22 is provided with a foot 20a of the light emitting diode 20 protruding from the lower portion of the substrate 19.
Do not come in contact with.

Further, the grill bottom 15 in a state of being fitted to the lower windscreen 17a and the net bottom 18a constituting the grill, the window grill 13 alone, and the upper windscreen 17b and the net top 18b are fitted. The grill tops 16 in each state can be easily separated. Further, the grill bottom 15 and the grill top 16 are separated by loosening the threaded portion of the projecting portion 15b and the threaded portion 16b. At that time, the window grill 1
Separate 3 as well.

As described above, according to this embodiment, 8
The substrate 19 to which the individual light emitting diodes 20 are soldered is sandwiched and fixed between the microphone holder 21 and the microphone unit 22. Since the notch 21b is provided in the upper portion of the microphone holder 21, it does not come into contact with the foot 20a of the light emitting diode protruding from the lower portion of the substrate 19. Therefore, even if the board 19 and the light emitting diode 20 are built in by adding a light emitting function, the board 19 must be housed in the grip 11 as in a conventional microphone, so that the grip 11 becomes thick. There is no problem that it becomes difficult to hold and that it becomes a restriction on design, and the change in shape due to the addition of the light emitting function is suppressed. Further, even when one of the substrate 19 and one of the light emitting elements 20 fails and is repaired, as compared with the conventional case where the substrate 19 is stored in the grip portion 11, disassembly,
It facilitates assembly work and contributes to speeding up the work.

Further, in comparison with the conventional microphone,
The addition of the light emitting function to the microphone is less likely to change the other constituent elements, and even in consideration of the reduction of the number of parts, the ease of processing, and the maintenance of the price, a remarkable progress can be seen.

Next, an example of the circuit configuration of the above embodiment will be described with reference to FIG.

In the figure, the circuit of this example includes a microphone unit 22, a slide switch section 2, a switch section 3,
It has a switch unit 4, a lighting unit 5, and a power supply 6.

The microphone unit 22 is connected to the fixed terminal J'of the slide switch section 2 via the node A. As a result, the voice input to the microphone unit 22 is converted into an electric signal corresponding to the sound pressure level by the microphone unit 22 and supplied to the fixed terminal J ′.

Here, the slide switch 12 of the slide switch section 2 can be switched to three modes. Slide switch 12 is in position a (solid line),
When in position b (dashed line) and position c (dashed line), flash on mode (microphone function is also on), microphone on mode (flash function is off), microphone off mode (flash function is off) ) Corresponds to.

The fixed terminal K'is connected to a microphone output terminal (not shown) via the node B and also to the switch section 3. As a result, the slide switch 12
Is at the position of a (solid line), the audio electric signal output from the microphone unit 22 is fixed terminal J ′,
It is supplied to the microphone output terminal via K ′ and is also supplied to the switch unit 3.

The fixed terminal K is connected to the switch section 3, the switch section 4 and the lighting section 5 via the node C. As a result, when the slide switch 12 is at the position a,
The power supply voltage supplied from the power supply 6 is supplied to the switch unit 3, the switch unit 4, and the lighting unit 5 via the fixed terminals J and K. That is, both the microphone function and the flash function are turned on.

When the slide switch 12 is at the position b (dashed-dotted line), the audio electric signal output from the microphone unit 22 is output to the microphone output terminal (not shown) via the fixed terminals L'and K'and the node B. Supplied. Further, the power supply voltage supplied from the power supply 6 is cut off at the fixed terminal J and is not supplied to the switch unit 3, the switch unit 4, and the lighting unit 5, and the flash-off state is set.

The position of the slide switch 12 is c (broken line)
In the case of, the audio electric signal output from the microphone unit 22 is blocked by the fixed terminal L and is not supplied to the microphone output terminal. Further, the power supply voltage supplied from the power supply 6 is also cut off at the fixed terminal J and is not supplied to the switch unit 3, the switch unit 4, and the lighting unit 5. That is, both the microphone function and the flash function are turned off.

The case where the slide switch 12 is at the position a (solid line) and the flash mode is selected will be described below.

The switch section 3 has an amplifier circuit 31, a rectifier circuit 32, and a control signal switch circuit 33.
The amplifier circuit 31 is connected to the microphone unit 22 via a node A, fixed terminals J ′ and K ′, and a node B,
A sound electric signal is supplied from the microphone unit 22 and a power supply voltage is supplied from the power supply 6 to the input terminal V _DD . The rectifier circuit 32 having the diode 32D is connected to the output terminal of the amplifier circuit 31, and the audio electric signal amplified by the amplifier circuit 31 to a level required for the subsequent processing is supplied. The control signal switch circuit 33 is connected to the output terminal of the rectifier circuit 32, and is connected to the diode 32D of the rectifier circuit 32.
At, the voice electric signal is rectified and a DC signal proportional to the level is supplied.

The control signal switch circuit 33 includes resistors R ₁₁ ,
It is composed of a resistor R ₁₂ and a transistor Tr 1. Base of the transistor Tr1, the rectification circuit 3 through the resistor R ₁₁
Two diodes 32D are connected in series. The resistor R ₁₂ is connected to a node N ₁₁ between the resistor R ₁₁ and the base of the transistor Tr 1, and the other end of the resistor R ₁₂ is grounded. The emitter of the transistor Tr1 is connected in the ground side and the node N ₁₂ of the resistor R _12. The collector of the transistor Tr1 is
It is connected to a control signal input terminal EN of a decoder 43 described later.

From the rectifying circuit 32, the resistor R ₁₁ and the node N _{11 are connected.}
When the audio electric signal supplied to the base of the transistor Tr1 via the transistor has a voltage equal to or higher than a predetermined level, the transistor Tr1 becomes conductive and the collector outputs a control signal of level "0". At this time, the potential of the control signal input terminal EN of the decoder 43 becomes zero. When the voltage of the audio electric signal does not reach the predetermined level, the transistor Tr1 does not conduct, and the collector outputs the control signal of the level "1". At this time, the potential of the control signal input terminal EN of the decoder 43 becomes equal to the power supply voltage.

The switch section 4 has an oscillator 41, a counter 42, and a decoder 43. The oscillator 41 is
Fixed terminals J and K and node C of the slide switch unit 2,
It is connected to the power supply 6 via D and is supplied with the power supply voltage.
Similarly, the counter 42 is connected to the power supply 6 through the nodes C and E, and the decoder 43 through the nodes C and E, and the power supply voltage is supplied to each.

From the oscillator 41, the clock signal (cycle 20 mSEC) C of the frequency of the power supply voltage supplied from the power supply 6 is supplied.
LK is output.

The input terminal CK of the counter 42 is the oscillator 41.
Of the clock signal C from the oscillator 41.
LK is supplied. The counter 42 has three output terminals Q ₁ , Q ₂ and Q ₃ , from each of which a clock signal C
A clock signal that changes in a cycle that is twice as long as LK, four times as long, and eight times as long as LK is output.

Each input terminal X ₁ , X ₂ , X _{3 of the} decoder 43
Are three output terminals Q ₁ , Q ₂ , and
Doubled output from each output terminal, connected to Q ₃ , 4
A clock signal having a doubled or eightfold cycle is supplied. Further, the decoder 43 has eight output terminals Y _{0 to} Y ₇ , and is provided with a combination of output voltages of level “0” or level “1” supplied to the input terminals X ₁ , X ₂ , and X ₃ . The output pulse voltage, which is either one of the level “L” voltage and the level “H” voltage that is determined, is supplied to the lighting unit 5.

Each of the drawings of FIG. 6 shows the oscillator 4 of the switch unit 4.
1, the levels of input / output signals of the counter 42 and the decoder 43 are shown.

In the figure, the clock signal C of the oscillator 41
The period of LK is 20 _msec . The clock signal CLK is supplied to the counter 42, and the input clock signal C
A square wave signal having a period twice that of LK is output from the output terminal Q ₁ . Furthermore, square wave signals of four times the period of the input clock signal CLK is output from the output terminal Q2, a square wave signal of 8 times the period is outputted from the output terminal Q _3.

Output terminals Q ₁ , Q ₂ , Q _{3 of the} counter 42
The square wave signal of each period output from the decoder 4 is
3 are supplied to the respective input terminals X ₁ , X ₂ , X ₃ . If the audio electric signal is above a predetermined level, the transistor Tr1
When the level of the control signal supplied from the collector to the control signal input terminal EN of the decoder 43 is "0" and the terminal EN is at 0 potential, as shown in the lower part of the figure,
The individual output terminals Y _{0 to} Y ₇ supply a pulse voltage of a cycle 8 (voltage of level “L” or voltage of level “H”).
In this circuit, the level “L” voltage is set to 0 voltage, and the level “H” voltage is set to be equal to the power supply voltage output from the power supply 6.

When the audio electric signal does not reach the predetermined level and the level of the control signal supplied from the collector of the transistor Tr1 to the control signal input terminal EN of the decoder 43 is "1" (that is, When the second control signal is output), the eight output terminals Y _{0 to} Y ₇ of the decoder 43 always supply the voltage of the level “H”. The voltage supplied from each of the output terminals corresponds to the lighting unit 5
Are supplied to the corresponding eight light emitting diodes 20 of.

The lighting part 5 is composed of eight light emitting diodes LED.
_{It has 0 to} LED ₇ . Light emitting diode LED ₀ , L
ED ₂ , LED ₄ and LED ₆ are red light emitting diodes, one end of which is connected to the power supply 6 through the resistor R ₅₀ and the node G, and the other end of which is the corresponding output terminal Y ₀ , Y ₂ , Y of the decoder 43. Connected to ₄ and Y ₆ . The light emitting diodes LED ₁ , LED ₃ , LED ₅ and LED ₇ are green light emitting diodes, one end of which is connected to the power source 6 through the resistor R ₅₁ and the node G, and the other end of which is the corresponding output terminal Y _{1 of the} decoder 43. , Y ₃ , Y ₅ and Y ₇ .

When the output terminal Y _{0 of the} decoder 43 is at 0 potential, the other end of the light emitting diode LED ₀ is at the same potential as the power source voltage of the power source 6 via the resistor R ₅₀ .
Lights up in red. When the output terminal Y ₀ of the decoder 43 has a potential equal to the power supply voltage, the other end has a resistance R
_Since it has the same potential as the power supply voltage of the power supply 6 via ₅₀ , the light emitting diode LED ₀ is also turned off.

[0049] Similarly, each of the eight light emitting diodes LED ₁ ~LED ₇ lighting unit, when the potential of the corresponding output terminal of the decoder 43 is level "L" on, when the level "H" is Flashes.

In the above structure, the slide switch 1
When the flash mode is selected in 2, the input sound is converted into an electric signal by the microphone unit 22 and supplied to the microphone input terminal and the switch unit 3 via the slide switch unit 2. The power supply voltage supplied from the power supply 6 is supplied to the switch unit 3, the switch unit 4, and the lighting unit 5. The switch unit 3 supplies the control signal of the level “0” to the control signal input terminal EN of the decoder 43 to set the terminal EN to 0 when the supplied electric signal is equal to or higher than a predetermined level.
The potential. When the electric signal does not reach a predetermined level, the control signal input terminal EN of the decoder 43 is supplied with a control signal of level "1" to make the terminal EN a potential equal to the power supply voltage. The one-cycle 20 _msec clock signal CLK supplied from the oscillator 41 is converted into a 3-bit parallel signal by the counter 42 and supplied to the decoder 43. The decoder 43 converts the 3-bit parallel signal into cycles 8 (one cycle 2
It is converted into a pulse voltage of 0 _msec . When the control signal of the level “0” is supplied to the control signal input terminal EN of the decoder 43 and the terminal EN becomes 0 potential, the pulse voltage of cycle 8 is supplied from the decoder 43 to each light emitting diode of the lighting section 5. By this and the power supply voltage supplied from the power supply 6 to the other end, the respective light emitting diodes of the lighting section 5 are sequentially lighted at the voltage cycle 8.

As described above, according to the present circuit configuration, when the sound input to the microphone unit 22 is at a predetermined level or higher, the eight red and green lighting portions 5 are alternately arranged. a light emitting diode LED ₀ ~LED ₇ are sequentially repeatedly turned at a constant period. When the input sound does not reach the predetermined level, the light emitting diodes LED _{0 to} LE
D ₇ remains off. That is, since it is only necessary to turn on / off the light emitting diodes LED _{0 to} LED ₇ one by one and repeat the operation, power consumption can be reduced as compared with the conventional one in which all the light emitting elements are turned on / off at once. .
Further, since the light emitting diodes LED _{0 to} LED ₇ rotate and blink, there are many variations, and it seems that the light continuously rotates due to the afterimage effect.
_{0 to} LED ₇ can be turned on. Moreover, since the luminous intensity and blinking speed of the light emitting element do not change according to the sound pressure level of the input voice, when used for karaoke or the like, the user may change the light emitting element. There is no risk of shifting the singing tempo.

Next, another example of the circuit configuration will be described with reference to FIG. 7, parts corresponding to those in FIG. 5 are designated by the same reference numerals, and detailed description thereof will be omitted.

In this circuit configuration, the switch section 3 in the example of FIG. 7 is replaced with the switch section 7.

The switch section 7 includes an amplifier circuit 31, a rectifier circuit 32, and a control signal switch circuit 33 in the example of FIG.
And a voltage switch circuit 73 in place of.

The voltage switch circuit 73 is composed of a resistor R ₁₁ , a resistor R ₁₂ and a transistor Tr 1, and a resistor R ₂₁ , a resistor R ₂₂ and a transistor Tr 2, and the transistor T
The emitter of r1 is connected to the fixed terminal K. Further, the voice electric signal is rectified by the diode 32D and the direct current signal proportional to the level thereof is supplied to the resistor R ₁₁ as the input terminal.

Further, in the present circuit, unlike the circuit configuration described above, the oscillator 41 and the counter 4 which constitute the switch unit 4 are constituted.
2 and the decoder 43 and the lighting unit 4 are not directly connected to the slide switch unit 2 but are connected via the switch unit 7.

Slide switch 12 is in position a (solid line)
When the flash-on mode is selected, the power supply voltage supplied from the power supply 6 is supplied to the switch unit 7 via the fixed terminals J and K and the node H. Power is supplied from the power source 6 when the slide switch 12 is in the b position (dotted line) and the microphone on mode is selected, and when the slide switch 12 is in the c position (broken line) and the microphone off mode is selected. Power supply voltage is fixed terminal J
It is cut off by and is not supplied to the switch unit 7.

The case where the slide switch 12 is at the position a (solid line) and the flash mode is selected will be described below.

The emitter of the transistor Tr2 and the resistor R ₂₁
A power supply voltage is supplied to the node N ₁₁ from the power supply 6 through the fixed terminals J, K, and H. The node N ₂₂ and the base of the other end and the transistor Tr1 resistor R ₂₁ resistor R ₂₂ is connected, the other end of the resistor R ₂₂ is connected to the collector of the transistor Tr1.

The collector of the transistor Tr2 is a node
Input terminal V of the oscillator 41 via D _DDVia node E
Then, the input terminal V of the counter 42_DDVia node F
Input terminal V of the decoder 43_DDAnd node G₀And resistance R
₅₀Through the light emitting diode LED₀, LED₂, LE
D_Four, LED₆And node G₁And resistance R₅₁Light through
Diode LED₁, LED_Three, LED_Five, LED₇Connected to
Is done.

From the rectifying circuit 32, the resistor R ₁₁ and the node N _{11 are connected.}
When the audio electric signal supplied to the base of the transistor Tr1 via the transistor Tr1 has a voltage equal to or higher than a predetermined level, the transistor Tr1 becomes conductive and the potential of the collector of the transistor Tr1 becomes 0 potential. As a result, the transistor Tr2
Then, the power supply voltage applied between the base and the emitter is supplied to the collector as it is, and the power supply voltage is supplied to each circuit of the switch section 4 and the lighting section 5 as described above.

On the other hand, when the audio electric signal does not reach the predetermined level, the transistor Tr1 does not conduct and the collector potential of the transistor Tr2 becomes zero. Therefore, the power supply voltage is not supplied to each circuit of the switch unit 4 and the lighting unit, and it is in an inoperable state.

The control signal input terminal E of the decoder 43
N is grounded through the node P. This allows
The control signal having the input level "0" is always supplied to the control signal input terminal EN, and the decoder 43 is always operable when the power supply voltage is supplied.

In the above structure, the slide switch 1
When the flash mode is selected in 2, the input sound is converted into an electric signal by the microphone unit 22 and supplied to the microphone input terminal and the switch unit 7 via the slide switch unit 2. The power supply voltage supplied from the power supply 6 is supplied to the switch unit 7. When the electric signal supplied to the switch unit 7 is equal to or higher than a predetermined level, the power supply voltage supplied from the power supply 6 is supplied to the switch unit 4 and the lighting unit 5. When the electric signal does not reach a predetermined level, the power supply voltage supplied from the power supply 6 is the switch unit 4
And is not supplied to the lighting unit 5. Further, the control signal input terminal EN of the decoder 43 is always supplied with the control signal of level "0", so that the terminal EN becomes 0 potential. The clock signal CLK having a period of 20 _msec supplied from the oscillator 41 is converted into a 3-bit parallel signal by the counter 42 and supplied to the decoder 43. The 3-bit parallel signal is converted by the decoder 43 into a pulse voltage having a cycle of 8 (one cycle of 20 _msec ). A pulse voltage of cycle 8 is supplied from the decoder 43 to each light emitting diode of the lighting unit 5. By this and the power supply voltage supplied from the power supply 6 to the other end, the respective light emitting diodes of the lighting unit 5 are sequentially and repeatedly lighted in the cycle 8.

As described above, according to the present circuit configuration, when the sound input to the microphone unit 22 has a predetermined level or higher, the eight red and green lighting portions 5 are alternately arranged. a light emitting diode LED ₀ ~LED ₇ are sequentially repeatedly turned at a constant period. When the input sound does not reach the predetermined level, the light emitting diodes LED _{0 to} LE
D ₇ remains off. Also, unlike the circuit configuration example described above, power is supplied to the oscillator 41, the counter 42, and the decoder 43 that form the switch unit 4 only when the input sound is at a predetermined level or higher. Therefore, power consumption can be further reduced as compared with the above-described first circuit configuration.

In both of the above circuit configurations, the luminous intensity and blinking speed of the light emitting element are not changed according to the sound pressure level of the input voice, and when used for karaoke or the like, the user can change the light emitting element. There is no fear of shifting the tempo of being sung and singing.

Further, instead of the above, as the oscillator 41, a variable frequency oscillator whose frequency can be freely set by the user may be used. For example, when used in karaoke or the like, if the light emitting diode 20 is made to blink by setting the cycle according to the tempo of the song, it is very easy to match the song. Further, it is possible to perform blinking in accordance with the tempo of the voice, which cannot be synchronized with the conventional karaoke microphone.

Further, as the light emitting element, a lamp or the like can be used in addition to the light emitting diode, and the number and color thereof can be appropriately increased or decreased.

[0069]

According to the present invention, when the electric signal supplied from the microphone unit exceeds a predetermined value,
Control is performed so that the plurality of light emitting elements are sequentially and repeatedly turned on. Therefore, it is possible to effectively light the light emitting elements with less power consumption as compared with the conventional one in which all the light emitting elements are turned on / off at once. With the power supply voltage supplied from the switch section, the power supply voltage is not supplied to the switch section when the electric signal output from the microphone unit does not reach a predetermined value. Therefore, it is possible to further reduce the power consumption.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a microphone according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a head of the microphone shown in FIG.

3 is a diagram showing a configuration of a substrate 19 shown in FIG.

4 is a diagram showing a configuration of a microphone holder 21 shown in FIG.

FIG. 5 is a block diagram showing an example of a circuit configuration of a microphone.

FIG. 6 is a timing chart of output signals of each circuit that constitutes the switch unit 4.

FIG. 7 is a block diagram showing another example of the circuit configuration of the microphone.

[Explanation of symbols]

2 slide switch section 3 switch section 4 switch section 5 lighting section 6 power supply 7 switch section 10 microphone 10a microphone head 10b cord 11 grip section 11a screw section 12 slide switch 13 window grill 15 grill bottom 15a, 15b protruding section 15c opening section 16 Grill top 16b Screw part 16c Opening part 16d Fitting part 17a, 17b Windscreen 18a Net bottom 18b Nettop 19 Substrate 19a Fitting hole 19b Solder 20 Light emitting diode 20a Light emitting diode electric terminal 21 Microphone holder 21a Fitting hole 21b Notch 22 Microphone unit 22a Lower part 22b Step part 31 Amplifying circuit 32 Rectifying circuit 32D diode 33 Control signal switch circuit 41 Oscillator 42 Counter 43 Deco 73 power supply switch circuit LED ₀ ~LED ₇ emitting diodes _{R 11, R 12, R 21} , R 22, R 51, R 52 resistors Tr1, Tr2 transistor

Claims (2)

[Claims] 1. A microphone unit for converting a voice input into an electric signal, and when a level of an electric signal output from the microphone unit is a predetermined value or more, a first control signal is output, and the level is the predetermined value. When the value does not reach the value, a first switch section that outputs a second control signal, a lighting section that has a plurality of light emitting elements, and when the first control signal is output from the first switch section, A second control for controlling the plurality of light emitting elements to sequentially light up, and controlling so that all of the plurality of light emitting elements do not light up when the second control signal is output from the first switch unit. And a switch section of the microphone. 2. A microphone unit for converting a voice input into an electric signal, a lighting section having a plurality of light emitting elements, and a first switch section for controlling the plurality of light emitting elements to be sequentially and repeatedly lighted. A microphone comprising: a second switch unit that supplies power to the lighting unit and the first switch unit when the level of an electric signal output from the microphone unit is equal to or higher than a predetermined value.