CN215911057U - Huqin intonation training optical indicating device - Google Patents

Abstract

The utility model provides an optical indicating device for huqin intonation training, which comprises: the shell is bound on a rod of the urheen by a thin line through the threading holes or the protruding parts at the top and the bottom of the shell; the main board is placed in the shell, and a single chip microcomputer chip, a USB interface and a light bar interface are arranged on the main board; the LED lamp beads are fixed on the lamp strips or integrated on the main board and used for emitting various colors of light; the light-transmitting window is arranged on the shell, so that light rays emitted by the LED lamp beads can be emitted from the shell, and punctiform light spots are formed on the strings according to string positions; the metal film induction key is adhered to the inside of the shell, and the position of the outside of the shell, which corresponds to the metal film induction key, is provided with key identification or characters. The optical indicating device for huqin intonation training disclosed by the utility model is accurate in indicating position and convenient to operate, can quickly improve the accuracy of sound pressing, greatly reduces the difficulty of huqin intonation training, and does not influence the movement of a left hand and the bowing of a right hand.

Description

Huqin intonation training optical indicating device

Technical Field

The utility model relates to the technical field of playing of a Huqin, in particular to an optical indicating device for intonation training of the Huqin.

Background

In the playing process of the Huqin, because the Huqin has no fingerboard and no taste, the intonation can be judged only by hearing according to the string pressing position of the fingers of the left hand, and a player can form good muscle memory only by performing long-term and large-amount repeated training on the hearing and the fingers to master better intonation, thereby increasing considerable difficulty for the learning of the musical instruments.

In the prior art, a huqin string pressing finger position sticker is formed by sticking a piece of PVC hard paper printed with a string pressing position on a piano rod, and printing marks of the string pressing position on the hard paper. Because the distance between the piano rod and the string is several centimeters, the human eyes have parallax when observing downwards, and the error of the string pressing position needs to be accurate to millimeter level, the technology has very limited help for accurately pressing the string.

In addition, there is a huqin finger position indicator, the principle is basically the same, the difference is that a vertical tubular object is installed between the rod and the strings, the exterior of the tubular object is printed with the string position marks of each tone, the tubular object can rotate, so that the string position marks and the phonetics of a certain tone can be seen from the upper side. However, for the same reason as the previous finger position paste, human eyes have parallax when observing downwards, only a reference of approximate phoneme can be provided, and the error of chord-pressing position needs to be accurate to millimeter level, and the technology is less helpful for accurate chord-pressing.

SUMMERY OF THE UTILITY MODEL

In view of the above technical problems, an object of the present invention is to provide an optical indicating device for huqin intonation training, which has the advantages of precise indicating position, convenient operation, rapid improvement of the accuracy of sound pressing, great reduction of the difficulty of huqin intonation training, and no influence on the movement of the left hand and the bowing of the right hand.

In order to achieve the above object, the present invention provides an optical indicating device for huqin intonation training, comprising: the shell is bound on a rod of the urheen by a thin line through the threading holes or the protruding parts at the top and the bottom of the shell; the main board is placed in the shell, and a single chip microcomputer chip, a USB interface and a light bar interface are arranged on the main board; the LED lamp beads are fixed on the lamp strips or integrated on the main board and used for emitting various colors of light; the light-transmitting window is arranged on the shell, so that light rays emitted by the LED lamp beads can be emitted from the shell, and punctiform light spots are formed on the strings according to string positions; the metal film induction key is adhered to the inside of the shell, and the position of the outside of the shell, which corresponds to the metal film induction key, is provided with key identification or characters.

Preferably, the LED lamp beads are non-condensation LED lamp beads, the number of the LED lamp beads is multiple, the arrangement direction of the LED lamp beads is parallel to the direction of strings of the urheen, and a light-gathering cover or a light-gathering lens is arranged outside the non-condensation LED lamp beads and used for guiding light rays to be emitted out after being guided by a short optical fiber arranged at an outlet of the light-gathering cover, so that light beams close to parallel are formed.

Preferably, the LED lamp beads are light-gathering LED lamp beads, the number of the LED lamp beads is multiple, the arrangement direction of the LED lamp beads is parallel to the direction of the strings of the Huqin, and small-angle light beams are emitted to directly point to the strings.

Preferably, the LED lamp beads are LED total light source lamp beads for forming a uniform light source, light sources emitted by the LED lamp beads are transmitted through optical fibers, the optical fibers are multiple, and each optical fiber corresponds to one phoneme; the tail end of the optical fiber is fixed by a positioning groove and vertically points to the string.

Preferably, the LED lamp beads are LED main light source lamp beads used for forming a uniform light source, and a light source emitted by the LED lamp beads is transmitted through the main light guide column and the branch light guide column in sequence; the main light column is provided with a groove at regular intervals, the groove is provided with 2 surfaces, one surface of the groove forms an angle of 45 degrees with the main light column, and the other surface of the groove is vertical to the main light column; a 45-degree wedge-shaped surface is formed at the rear end of the branch light guide column and is attached to the groove, and light passes through the main light guide column, is reflected by the 45-degree surface of the groove and is transmitted to the branch light guide column; the number of the grooves is 5-18, and the spacing between two adjacent grooves is determined by the indicated phoneme.

Further, the key identification includes a tone-changing touch key identification and a brightness adjustment key identification.

Preferably, the mainboard is further provided with a battery power line interface, and a battery arranged in the shell supplies power to the mainboard through the battery power line interface.

Optionally, the motherboard is not connected to a battery, and is directly powered by the USB interface.

Optionally, the USB interface is mirco USB, USB Type C or Lightning interface, stretches out outside the casing through the aperture on the casing for link to each other with the USB data line.

Further, an LED display screen and a display screen window are further installed on the shell.

Therefore, the optical indicating device for huqin intonation training disclosed by the utility model at least has the following beneficial effects:

the LED light source of the device emits blue or other colors of light, the light is emitted from the shell of the shell and then irradiates the string to form a point-shaped light spot on the string to be pressed, and the accurate pressing position can be indicated for a player or a person who learns to play the Huqin; or the light irradiates on the string pressing finger to form a transverse strip-shaped light spot, so that the accuracy of the sound pressing position can be judged. Because the clear string pressing position is indicated visually or the accuracy of the pressing sound is easy to judge visually, the sound played by the player has better accuracy and forms a good playing habit. The optical indicating device for huqin intonation training disclosed by the utility model is accurate in indicating position and convenient to operate, can quickly improve the accuracy of sound pressing, greatly reduces the difficulty of huqin intonation training, and does not influence the movement of a left hand and the bowing of a right hand.

Drawings

Fig. 1 is a first schematic structural diagram of a huqin intonation training optical indicating device of the utility model;

fig. 2 is a schematic structural diagram of a huqin intonation training optical indicating device of the utility model;

FIG. 3 is a schematic view of a non-condensing LED lamp bead of the present invention with light transmitted through a condensing hood;

FIG. 4 is a schematic view of a non-condensing LED lamp bead of the present invention with light transmitted through a condensing lens;

FIG. 5 is a schematic diagram of the LED total light source lamp bead of the present invention with light transmitted through an optical fiber;

FIG. 6 is a schematic diagram of the LED main light source lamp bead of the present invention, wherein light is transmitted through the main light guide column and the branch light guide column;

FIG. 7 is a schematic structural diagram of an integrated motherboard according to the present invention;

FIG. 8 is a schematic structural view of the tone-changing touch key identifier, the brightness adjustment key identifier, and the display screen window of the present invention disposed on the housing;

FIG. 9 is a schematic diagram of the connection between the motherboard and various components of the present invention;

FIG. 10 is a G tuning bit indicator diagram;

FIG. 11 is a D tuning bit and light indicator diagram;

FIG. 12 is a control diagram for controlling the overall on-off of the LED lamp beads of the lamp strip;

fig. 13 is a schematic diagram of all phonemes and all LED beads of the light bar being fully lit.

Wherein, 1-bridge, 2-USB interface, 3-battery, 4-wire, 5-shell, 6-horizontal light spot, 7-finger, 8-metal film induction key, 9-Huqin jack, 10-condenser lens, 11-string, 12-tuning peg, 13-head, 14-support, 15-barrel, 16-thin line, 17-rod, 18-single chip, 19-main board, 20-LED lamp bead, 90-integral jack, 93-condenser cover, 94-short optical fiber, 95-non-condenser LED lamp bead, 96-positioning slot, 97-LED total light source lamp bead, 98-optical fiber conduit, 99-optical fiber, 100-point light spot, 101-branch light guide column, 102-leading light column, 111-tone-changing touch key identification, 112-display screen window, 150-inner string, 151-outer string, 153-electrified LED lamp bead, 154-non-electrified LED lamp bead, 203-LED display screen, 207-lamp bar, 211-brightness adjusting key identification and 300-light-passing window.

Detailed Description

The utility model can be used for huqin intonation training or playing huqins, and because the huqins have no fingerboard and grade, the intonation of the huqin can be judged only by hearing at the string pressing position of the fingers of the left hand, thereby increasing considerable difficulty for learning of the musical instruments. The utility model provides optical string pressing indication for a Huqin learner and a player.

As shown in fig. 1 to 13, the optical indicating device for huqin intonation training provided by the utility model comprises a shell, wherein the shell is bound on a rod of a huqin by thin wires through top and bottom threading holes or bulges of the shell so as to fix the position of the shell. The mainboard that is used for installing parts such as singlechip chip, USB interface, charge indicator, button interface, battery power line interface, lamp strip interface, display screen interface has been placed in the shell, and accessible lamp strip interface is the lamp strip power supply and whether switches on of control LED lamp pearl, and the mainboard also can be in the same place with lamp strip integration, forms integrated mainboard. LED lamp beads are arranged on the lamp strip or the integrated main board and can be used for emitting various colors. Wherein, the USB interface can be mirco USB, USB Type C, Lightning interface, installs on the mainboard to outside stretching out the casing through the aperture on the casing, be used for linking to each other with the USB data line. If the power interface is adopted without adopting a USB interface, the power interface is divided into a positive interface and a negative interface and is used for connecting the output of the charger.

Install logical light window on the shell, its logical light position can adopt transparent material, also can directly trompil, can make the light that LED lamp pearl sent pass and from the casing of shell and jet out. The metal film induction key is pasted in the shell, and the position of the shell, corresponding to the metal film induction key, is provided with key identification or characters for interaction with people, namely, the brightness of the lamp bead and the content of the display screen are controlled by the people through touch.

In addition, a battery is arranged in the shell, a rechargeable battery or a disposable carbon battery can be adopted, and the battery can be connected with the mainboard through a wire and used for supplying power to the device. A display screen window is also mounted on the housing, and the display screen is visible from the outside through the window on the housing.

The main board can be controlled by a single chip microcomputer, receives key input, and independently controls on and off of current output to each LED lamp bead of the lamp strip, namely, each lamp bead is independently controlled, a tone selected by a user is displayed, and the lamp bead which needs to be lightened by the tone is lightened; and a common chip can be adopted to accept key input and carry out integral on-off control on the LED lamp beads of the lamp strip. The mainboard also can be integrated together with the lamp strip, forms integrated mainboard.

Specific LED lamp beads can be installed on the LED lamp strip at specific positions, and other elements such as resistors, diodes and the like can be installed on the LED lamp strip in a welding mode. The LED lamp beads adopt LED spotlight beads, can emit light with specified colors, and directly form small-angle convergence. The color of the LED lamp bead can be blue, red, green, etc., but blue and green are preferred.

The length of the housing of the present invention is selected between 200 and 380 millimeters.

In the following, the overall structure of the utility model is described by taking erhu as an example: the urheen comprises a bridge 1, a peg 12, a headstock 13, a support 14 and a barrel 15, wherein a shell 5 of the urheen intonation training optical indicating device is bound on a rod 17 of the urheen by a thin line 16 through the top and bottom bulges (shown in figure 1); the thin line 16 can be bound on the rod 17 of the urheen through the threading holes 92 at the top and the bottom of the thin line, so that the position of the thin line is fixed (as shown in fig. 2), and the mainboard 19 is placed in the shell 5 and used for installing the single chip microcomputer chip 18, the USB interface 2, the charging indicator lamp, the key interface, the battery power line interface, the light bar interface, the display screen interface and the like. The main board 19 supplies power to the light bar 207 and controls whether the light bar is powered on or not. Motherboard 19 may also be integrated with light bar 207, with an integrated motherboard in place (as shown in fig. 7). LED lamp pearl 20 is fixed on lamp strip 207 or integrated mainboard 19, can be used to send various chromatic light.

The light-passing window 300 is adhesively mounted on the shell 5, the light-passing position of the light-passing window can be made of transparent materials or can be directly provided with holes, and light rays emitted by the LED lamp beads 20 can pass through and are emitted from the shell of the shell 5. The housing 5 is provided with an LED display 203, and the contents thereof are made visible from the outside through a display window 112 provided in the housing 5. A metal film induction key 8 is pasted in the shell 5, and a modulation touch key identifier 111 and a brightness adjustment key identifier 211 are arranged at the position, corresponding to the metal film induction key 8, outside the shell 5, and are used for interacting with people, namely, the brightness and the content of the LED display screen 203 are changed by the touch of people. The battery 3 is also arranged in the shell 5, and the battery 3 can be a rechargeable battery or a disposable carbon battery and can be connected with the mainboard 19 through the lead 4 for supplying power. USB interface 2 can be mirco USB, USBType C, Lightning interface, installs on mainboard 19 to stretch out through the aperture on the shell 5, USB interface 2 also can replace with power source, divides the positive and negative poles.

Light rays emitted from the LED lamp beads 20 are converged into a certain angle, emitted from the light-transmitting window 300 and then irradiated on the strings 11 to form point-shaped light spots 100 at string pressing positions, and can be used for indicating accurate sound pressing positions; or irradiating on the finger 7 to form a transverse strip-shaped light spot 6, wherein the height of the transverse strip-shaped light spot 6 in the vertical direction is 1-4mm, and the width in the left-right direction is 5-10 mm. The point-like light spot 100 indicates an accurate sound-pressing position, so that the accuracy of sound pressing is easily judged visually, and the sound-pressing position is accurate; the transverse strip-shaped light spot 6 formed on the string pressing finger 7 can intuitively judge whether the string pressing position is accurate or not.

As shown in fig. 2, it is also possible to integrate the huqin jack 9 on the casing 5, i.e. instead of installing the huqin jack 9 separately, an integral jack 90 is arranged on the casing 5, i.e. a small hole with a diameter of 0.5-2mm is arranged on the integral jack 90, and the string 11 passes through the integral jack 90.

The light source in the utility model can have the following schemes:

scheme 1: the LED lamp beads 20 are directly selected from a plurality of independent light-gathering LED lamp beads, the arrangement direction is parallel to the direction of strings of the Huqin, light with specified color can be emitted, and each string-pressing position adopts an independent light source. The light-gathering LED lamp beads can be directly adopted, the light beams gathered in a small angle are directly formed, and the light beams irradiate the strings 11. It is also possible to use a non-condensing LED lamp bead 95, which has a condensing hood 93 on its outer surface, and after condensing the light, it is guided by a short fiber 94 installed at its outlet and then emitted out, forming a nearly parallel light beam, as shown in fig. 3. The short optical fiber 94 has a diameter of 0.5-2 mm.

A condensing lens 10 may also be added in front of the non-condensing LED lamp bead to condense the light and then emit the condensed light after being guided by a short optical fiber 94 installed at an outlet of the condensing lens, as shown in fig. 4. The diameter of the condenser lens 10 is 1-5 mm.

Scheme 2: the LED total light source lamp beads 97 are adopted to form a uniform light source and are transmitted through optical fibers 99, the number of the optical fibers 99 is 5-18, the optical fibers 99 form a bundle, each optical fiber 99 corresponds to one phoneme, and the diameter of each optical fiber 99 is selected from 0.5-2 mm. The optical fiber 99 is LED out from the LED main light source bead 97 via the optical fiber conduit 98, and the end of the optical fiber 99 is fixed by the positioning groove 96 so that the position thereof is accurately pointed at the string 11. The exact location of the fixation slots 96 is determined by the indicated phoneme as shown in fig. 5.

Scheme 3: the LED main light source lamp beads 97 are adopted to form a uniform light source, and the uniform light source is transmitted through the main light guide column 102 and the branch light guide column 101 in sequence. The diameter of the main light guide column 102 is 1-6mm, the diameter of the branch light guide column 101 is 1-3mm, and the two are both made of organic glass materials with smooth surfaces. The main light pillar 102 has a groove at regular intervals, the groove has 2 faces, one face of the groove forms an angle of 45 degrees with the main light pillar 102, and the other face of the groove is perpendicular to the main light pillar 102. The rear end of the branch light guide pillar 101 forms a 45-degree wedge-shaped surface which is just attached to the groove. The light passes through the main light guide 102 and is reflected by the 45-degree surface of the groove, and is transmitted to the branch light guide 101. There are 5-18 grooves on the main light pillar 102, and the spacing between two adjacent grooves is determined by the indicated phoneme, as shown in fig. 6.

The application example of the Huqin intonation training optical indicating device is as follows:

example 1: when indicating the phoneme, the indication function of different tones can be realized, as shown in fig. 8, the outer surface of the housing 5 is respectively provided with a tone-changing touch key identifier 111, a brightness adjustment key identifier 211, and a display screen window 112.

As shown in fig. 9, the main board 19 is designed by a single chip microcomputer, and has a function of accepting two key inputs, and individually controlling on/off of the current output to each LED lamp bead of the lamp strip 207, that is, individually controlling each lamp bead. The key selected by the user is displayed on the LED display 203 and the light source to be lit by the key is lit as desired. For example, when the pitch G is set, the phonemes on the inner and outer strings 150 and 151 are as shown in fig. 10. At this time, the LED lamp beads 154 which are not electrified and the LED lamp beads 153 which are electrified can be controlled to be formed according to the requirement of the phoneme.

When the D-key is set, the phonemes on the inner and outer strings 150 and 151 are as shown in fig. 11. By analogy, the phoneme indications of the C tone, the B tone, the F tone and the like can be carried out according to the settings of the user.

When a user presses the tone-changing touch key identification 111 for multiple times, the set tone numbers are changed in turn on the LED display screen 203 in a circulating manner; when the brightness adjustment key mark 211 is pressed for multiple times, the brightness of the light source is changed cyclically in an off-weak-medium-strong mode in sequence, namely, the brightness adjustment key mark 211 is also a power switch of the device.

Example 2: as shown in fig. 12, the overall on-off control is performed on the LED beads of the light bar. At this time, the tonal modification touch key identifier 111 and the LED display 203 shown in fig. 8 are canceled, and only the brightness adjustment key identifier 211 and the corresponding metal film induction key 8 are reserved. When the brightness adjustment key mark 211 is pressed for multiple times, the brightness of the light source is changed cyclically in an off-weak-medium-strong mode in sequence, namely, the brightness adjustment key mark 211 is also a power switch of the device. When the power supply is turned on, all the LED lamp beads on the lamp strip are all lighted, namely all the phonemes including the half phoneme are provided with the spot-shaped light spots, namely all the phonemes are indicated, as shown in fig. 13.

The implementation method can adopt a common chip, adopts single-path or double-path output, and controls all the LED lamp beads together instead of independently.

The above takes the example of the installation on a urheen. The structure of the Chinese fiddle is basically the same as that of the urheen, such as banhu, Beijing opera, Gaohu, pendant urheen and radium qin, and the installation and the use of the device are not influenced. Therefore, the utility model is also applicable to other huqins.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (8)

1. The utility model provides a huqin intonation training optical indicator which characterized in that includes:

the shell is bound on a rod of the urheen by a thin line through the threading holes or the protruding parts at the top and the bottom of the shell;

the main board is placed in the shell, and a single chip microcomputer chip, a USB interface and a light bar interface are arranged on the main board;

the LED lamp beads are fixed on the lamp strips or integrated on the main board and used for emitting various colors of light;

the light-transmitting window is arranged on the shell, so that light rays emitted by the LED lamp beads can be emitted from the shell, and punctiform light spots are formed on the strings according to string positions;

the metal film induction key is adhered to the inside of the shell, and the position of the outside of the shell, which corresponds to the metal film induction key, is provided with key identification or characters.

2. The optical indicating device for huqin intonation training according to claim 1, wherein the LED light bulbs are non-light-focusing LED light bulbs, the number of the LED light bulbs is multiple, the arrangement direction of the LED light bulbs is parallel to the string direction of the huqin, and a light-focusing cover or a light-focusing lens is arranged outside the non-light-focusing LED light bulbs and used for guiding and emitting light rays after being focused by short optical fibers arranged at the outlets of the light bulbs so as to form approximately parallel light beams.

3. The optical indicating device for huqin intonation training according to claim 1, wherein the LED light bulb is a LED light source light bulb for forming a uniform light source, the light source emitted by the LED light bulb is transmitted through a plurality of optical fibers, and each optical fiber corresponds to one phoneme;

the tail end of the optical fiber is fixed by a positioning groove and vertically points to the string.

4. The optical indicating device for huqin intonation training according to claim 1, wherein the LED light bulb is a LED master light source light bulb for forming a uniform light source, and a light source emitted by the LED light bulb is transmitted through the master light guide column and the branch light guide column in sequence;

the main light column is provided with a groove at regular intervals, the groove is provided with 2 surfaces, one surface of the groove forms an angle of 45 degrees with the main light column, and the other surface of the groove is vertical to the main light column;

a 45-degree wedge-shaped surface is formed at the rear end of the branch light guide column and is attached to the groove, and light passes through the main light guide column, is reflected by the 45-degree surface of the groove and is transmitted to the branch light guide column;

the number of the grooves is 5-18, and the spacing between two adjacent grooves is determined by the indicated phoneme.

5. The optical pointing device for huqin intonation training according to claim 1, wherein said key identifiers include key touch key identifiers and key identifiers for brightness adjustment.

6. The optical pointing device for huqin intonation training according to claim 1, wherein said main board is further provided with a battery power line interface, and a battery mounted inside the housing supplies power to the main board through the battery power line interface.

7. The optical pointing device for huqin intonation training according to claim 1, wherein the USB interface is a mirco USB, USB Type C or Lightning interface, and extends out of the housing through a small hole on the housing for connecting with a USB data cable.

8. The optical pointing device for huqin intonation training according to claim 1, wherein said housing further mounts an LED display and a display window.

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