JP2011071065A - Front panel for karaoke machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a front panel for a karaoke machine capable of rendering effective illumination effects. <P>SOLUTION: The front panel includes a plurality of light source sections arranged on an inner bottom face of the panel in the width direction of the panel with a prescribed spacing; a first optical-path changing section having an arc shape in a side view which is fixed and installed at a position for covering the light source sections and a second optical-path changing section having an arc shape in side view which is fixed and installed on the upper side than the first optical-path changing section and a projection plate. Unevenness is formed on the inside surfaces of first and second optical path changing sections, light-emitting intensities of respective light source sections are controlled, based on a prescribed control signal so as to include a period that the direction of the change of the light-emitting intensities in mutually neighboring light source sections is different; and by a means whereby a section of an emitted light from respective light source sections in which the light-emitting intensities is controlled are projected to the projection plate by changing the optical path by the first and second optical-path changing sections, a prescribed moving illumination pattern on the projection plate is formed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a front panel for a karaoke apparatus that can produce effective illumination.

  In the karaoke apparatus used in a relatively dark place such as a karaoke box or a night shop, the present inventors can illuminate the front panel for the karaoke apparatus provided on the front surface of the casing in a desired pattern. We thought it could function as part of the interior of the store.

  Here, Patent Document 1 below discloses the appearance of a general karaoke device in which a front panel for a karaoke device is provided on the front surface of the housing. In such a karaoke apparatus, in order to emit light from the front portion of the panel, it is necessary to provide a mechanism for light emission inside the panel.

  By the way, since the thickness of a normal panel is about several centimeters, it is practically difficult to provide a light source part on the inner back side of the panel (see FIG. 8A). Therefore, as shown in FIG. 8 (B), a configuration in which a light source unit is provided on the bottom surface inside the panel and light from the light source unit is reflected by the reflecting plate is required (in the actual configuration, the reflecting plate is used). The reflected light from the light is projected onto a projection plate (not shown). A configuration having a positional relationship as shown in FIG. 8B is used in a light guide plate unit of a liquid crystal display (for example, Patent Document 2 below).

JP 2005-105523 A Japanese Patent Laid-Open No. 10-48428

  By the way, in order to produce an effective illumination by causing the front panel for a karaoke apparatus to emit light, instead of projecting light of uniform intensity (luminance) on the projection plate, various lights having different intensities are projected on the projection plate. Must be configured to project. As a result, it is possible to produce fluctuation and depth (three-dimensional effect) on the panel. However, since the technique disclosed in Patent Document 2 is for making the luminance of the display uniform, the technique cannot be applied to the front panel for a karaoke apparatus.

  In addition, by physically moving the light source unit, the reflection plate, the projection plate, etc., it becomes possible to project various lights having different intensities onto the projection plate. A moving mechanism (for example, a motor, a gear, etc.) such as a part, a reflector, and a projection plate is required. When a motor, a gear, or the like is operated, an unpleasant sound or an unnecessary sound is generated. Therefore, it is not appropriate to use such a moving mechanism for a karaoke apparatus intended to enjoy sound.

  An object of this invention is to provide the front panel for karaoke apparatuses which can solve the said problem.

  In order to achieve the above object, the invention according to claim 1 is a karaoke device front panel provided on the front surface of a karaoke device housing, wherein the panel has a width of the panel on an inner bottom surface of the panel. A plurality of light source units arranged at predetermined intervals in the direction, a first optical path changing unit having an arc shape in a side view fixed at a position covering the light source unit, and fixed above the first optical path changing unit A second optical path changing portion having a circular arc shape when viewed from the side, and a projection plate, and unevenness is formed on the inner surfaces of the first and second optical path changing portions, and the light emission intensities of the respective light source portions Is controlled so as to include a period in which the direction of change in emission intensity in the adjacent light source units is different based on a predetermined control signal, and one of the emitted light from each light source unit in which the emission intensity is controlled. In the first and second optical path changing sections By being projected onto the projection panel is changed optical path I, and configured so that a predetermined illumination pattern having movement in the projection board is formed.

  The invention according to claim 2 is the front panel for a karaoke apparatus according to claim 1, wherein the panel has a light shielding portion disposed between the light source portions on the inner bottom surface of the panel. Furthermore, it comprised so that it might have.

In the present invention, the light from each light source unit whose emission intensity is controlled is changed in optical path by the first and second optical path changing units and projected onto the projection plate, whereby a predetermined illumination pattern is formed on the projection plate. Is formed. That is, according to the present invention, it is possible to produce an effective illumination without moving any member constituting the karaoke device front panel. Thereby, the outstanding front panel for karaoke apparatuses without generation | occurrence | production of an unpleasant sound and an unnecessary sound is realizable.
Further, when a light shielding portion is provided, the spread angle of the emitted light from each light source portion can be controlled by the action of the light shielding portion, so that effective illumination can be produced.

It is a front view of the front panel for karaoke apparatuses. It is a perspective view of a karaoke apparatus. (A) is sectional drawing of the front panel for karaoke apparatuses, (B) is an internal front view of the front panel for karaoke apparatuses, (C) is explanatory drawing which showed a part optical path of emitted light. is there. (A) is sectional drawing of an optical path change part, (B) is a perspective view of an optical path change part. It is the figure which looked at the optical path change part from the light source part side. It is a circuit diagram of a light source part and a light emission control part. It is explanatory drawing which shows the relationship between the time of the light source part of an odd number group, and an even number group, and a light emission duty. (A) is explanatory drawing which shows a mode that the light source part was provided in the internal back surface side of a panel, (B) is explanatory drawing which shows a mode that the light source part was provided in the internal bottom surface side of the panel.

  Hereinafter, a karaoke apparatus having a front panel according to an embodiment of the present invention will be specifically described.

[Outline of Embodiment]
First, an outline of the front panel according to the embodiment will be described. As shown in FIG. 1, the front panel 20 according to the present embodiment includes an illumination unit 28 on a part of the front surface, and displays a predetermined illumination pattern with movement (for example, fluctuation). For example, an illumination pattern that appears as if the pattern on the illumination unit 28 fluctuates is displayed. Illumination with depth (three-dimensional effect) can be produced by the illumination pattern. The illumination unit 28 is, for example, a smoke gray transmissive member, and can transmit light emitted from the inside of the front panel 20 to the outside. The illumination pattern is generated by an illumination generation unit 40, which will be described later, arranged inside the front panel 20. Further, since the illumination generation unit 40 has a structure that does not have a moving mechanism, there is an advantage that unpleasant sounds and unnecessary sounds are not generated.

[Appearance of front panel 20]
Next, the appearance of the front panel 20 will be described. As shown in FIG. 2, the front panel 20 is one of the components constituting the karaoke device 1 and is disposed on the front side of the housing 10 constituting the karaoke device 1. An operation unit 29 is provided on a part of the front surface of the front panel 20 (above the illumination unit 28), and various buttons and the like for operating the karaoke apparatus 1 are provided on the operation unit 29. ing. It should be noted that various known configurations can be used for the housing 10 and the operation unit 29, and detailed descriptions thereof are omitted because they are unrelated to the understanding of the present invention. Note that the layout of the front panel 20 shown in FIGS. 1 and 2 is merely an example. That is, the operation unit 29 may be provided below or on the left and right sides of the illumination unit 28, and the operation unit 29 may not be provided on the front surface, and the entire front surface of the front panel 20 may be used as the illumination unit 28.

[Internal configuration of front panel 20]
Next, the internal configuration of the front panel 20 will be described. As shown in FIG. 3A, the illumination generation unit 40 includes a light source unit 21, a light shielding unit 22, an optical path changing unit 30, a first reflection plate 24, a second reflection plate 25, and a projection plate 26. .

  As shown in FIGS. 3A and 3B, a plurality of light source portions 21_1, 21_2, 21_3,..., 21_20 are provided on the inner bottom surface side of the front panel 20. In the following description, when any one light source unit or all the light source units among the plurality of light source units are shown, they are referred to as the light source unit 21 for convenience. In FIG. 3, the number of the light source units 21 is 20, but the number of the light source units 21 is not limited in the present invention.

  The light source units 21 are arranged at predetermined intervals in the width direction of the front panel 20. This interval may be the same interval for each light source unit 21, but may be slightly different. Each light source unit 21 can emit light of a desired color with various light emission intensities, and can be configured by, for example, three LEDs of RGB. Note that an LED incorporating a chip of RGB three primary colors may be used, or a single color light source and a color film may be combined. In addition, when producing illumination with monochromatic light, you may comprise the light source part 21 with a monochromatic light source. The light emission intensity and color of the emitted light from each light source unit 21 are controlled based on a predetermined control signal output from a light emission control unit 51 described later.

  On both sides of each light source unit 21, light shielding units 22_1, 22_2, 22_3,..., 22_20 are provided. In the following description, when any one or all of the light shielding parts among the plurality of light shielding parts are shown, they are referred to as the light shielding part 22 for convenience. In FIG. 2, two light shielding parts 22 are provided so as to sandwich both sides of each light source part 21, but one light shielding part 22 is provided between adjacent light source parts 21. Also good. The light shielding unit 22 is provided with, for example, a black coating in order to shield light emitted from the light source unit 21 (hereinafter simply referred to as “emitted light”). Thereby, the spread angle of the emitted light from the light source unit 21 is controlled. In addition, the length of the vertical direction of the light-shielding part 22 can be suitably adjusted according to a desired spreading angle.

  Inside the front panel 20, a first optical path changing unit 30_1 and a second optical path changing unit 30_2 for changing a part of the optical path of the emitted light are fixed. In the following description, when one of the two optical path changing units or both of the optical path changing units is shown, it is referred to as an optical path changing unit 30 for convenience. Details of the optical path changing unit 30 will be described later.

  A first reflector 24 is provided on the inner back side of the front panel 20. Further, a second reflecting plate 25 is provided so that the lower end portion is in contact with the upper end portion of the first reflecting plate 24, and the second reflecting plate 25 is directed from the inner back side of the front panel 20 toward the inner front side. And having a predetermined inclination angle. The width direction lengths of the first reflection plate 24 and the second reflection plate 25 are substantially the same as the width direction length of the front panel 20. Note that the first reflector 24 and the second reflector 25 may be integrally formed. These reflectors are, for example, black-coated in order to adjust the reflectance of the emitted light.

  On the back surface of the illumination unit 28, a milky white projection plate 26 is provided, and the light emitted from the light source unit 21 is projected thereon. The projected emitted light passes through the illumination unit 28 and reaches the outside of the front panel 20. This light is visually recognized by the user as an illumination pattern.

  With the configuration described above, a part of the emitted light from the light source unit 21 whose emission intensity and color are controlled is changed in optical path by the optical path changing unit 30. Further, a part of the light that has passed through the optical path changing unit 30 is reflected by the first reflecting plate 24 or the second reflecting plate 25 and projected onto the projection plate 26, and the other part that has passed through the optical path changing unit 30 The light is directly projected onto the projection plate 26 (see FIG. 3C). Thereby, a predetermined illumination pattern with movement can be displayed on the illumination unit 28.

[Specific Configuration of Optical Path Changing Unit 30]
Next, a specific configuration of the optical path changing unit 30 will be described. As shown in FIG. 4A, the optical path changing unit 30 has a circular arc shape when viewed from the side, and is made of a transparent member in order to allow the emitted light from the light source unit 21 to pass therethrough. The first optical path changing unit 30_1 is fixed inside the front panel 20 so as to cover the light source unit 21. Further, the second optical path changing unit 30_2 is fixed inside the front panel 20 at a position above the first optical path changing unit 30_1. As shown in FIG. 4A, the inner surface of each optical path changing unit 30 is uneven. Specifically, as shown in FIG. 4B, a large number of elliptical recessed portions 33 are formed on the inner surface of each optical path changing portion 30. Each recess 33 is formed to be deeper toward the center. In addition, the size of each recess 33 is non-uniform and is irregularly formed on the inner surface of the optical path changing unit 30. In the present embodiment, the two optical path changing units 30 are common members. Further, the recess 33 functions as a lens that changes the optical path.

  By being configured in this way, the outgoing light that reaches the recess 33 is refracted at a predetermined refractive index (that is, the optical path is changed), passes through the optical path changing unit 30, and does not reach the recess 33. The emitted light passes through the optical path changing unit 30 without changing the optical path. Accordingly, a predetermined pattern can be displayed on the illumination unit 28 based on the light emitted from the light source unit 21. Moreover, in this embodiment, since it has the two optical path change parts 30 of the 1st optical path change part 30_1 and the 2nd optical path change part 30_2, a various pattern can be displayed.

  Further, as shown in FIGS. 4B and 5C, the lower end side (the inner bottom surface side of the front panel 20) of the optical path changing unit 30 is on the upper end side (the inner side of the front panel 20). The density of the recessed portions 33 is higher than that on the back surface side. Thereby, the density of image formation is different from the bottom to the top of the illumination part 28, and a pattern having a spread from the bottom to the top of the illumination part 28 can be displayed.

  Since the optical path changing unit 30_1 and the optical path changing unit 30_2 have the same curvature, by arranging the two optical path changing units 30 inside the front panel 20 as shown in FIG. The interval (interval between the recesses 33) is different between the lower end side (the inner bottom surface side of the front panel 20) of the optical path changing unit 30 and the upper end side (the inner rear surface side of the front panel 20). As a result, the distance from the light source unit 21 until the emitted light reaches the projection plate 26 is different. When this optical path becomes longer, the light projected on the projection plate 26 spreads and is projected. Therefore, the longer the optical path, the more the light diffuses and is projected onto the projection plate 26 as dark and large light. Further, the outgoing light that forms an image on the projection plate 26 becomes blurred as the optical path becomes longer.

That is, when viewed from the entire light emitted from the light source unit 21, the magnitude and degree of blur of the emitted light projected (formed) on the projection plate 26 are clearly different on the upper and lower sides of the projection plate 26. Specifically, since the distance between the recesses 33 is shorter toward the lower end side, the degree of diffusion is small, and the distance between the light source unit 21 and the projection plate 26 is also short. Therefore, most of the illumination under the illumination unit 28 is It is displayed brightly and clearly. On the other hand, since the distance between the concave portions 33 is longer at the upper end side, the degree of diffusion is large and the distance between the light source portion 21 and the projection plate 26 is also long. Therefore, most of the illumination above the illumination portion 28 is darkly blurred. Is displayed. That is, most of the emitted light that reaches the lower side of the projection plate 26 reaches the projection plate 26 through a short optical path, and most of the emitted light that reaches the upper side of the projection plate 26 reaches the projection plate 26 through a long optical path. .
As a result, it is possible to make the user visually recognize the illumination with a sense of depth due to the double image.

  In addition, the double image here refers to an image that is gradually blurred toward the uppermost end and the clearest image at the lowermost end that is visually recognized at the same time. As an example of the effect of the double image, in a landscape photograph taken from the rooftop of a building, a clear landscape that can be seen underneath the front and a landscape that is distant from the front can be seen at the same time. You can feel the depth (three-dimensional effect). In the present embodiment, such an effect is applied to the illumination displayed on the illumination unit 28.

  Further, in this embodiment, since the light emission intensity of each light source unit 21 is controlled, the control of the light emission intensity and the recess 33 formed in the optical path changing unit 30 combine to cause the illumination unit 28 to move. A certain illumination pattern can be displayed. The first optical path changing unit 30_1 and the second optical path changing unit 30_2 are fixed inside the front panel 20. That is, since it is not necessary to move each optical path changing unit 30, a moving mechanism becomes unnecessary. Thereby, the front panel 20 of this embodiment can produce an effective illumination without generating an unpleasant sound or an unnecessary sound. As a result, the front panel 20 is suitable for use in a karaoke apparatus that has a relatively long life cycle and is intended to enjoy sounds.

  The curvature of the optical path changing unit 30 and the length of the arc can be set as appropriate. Furthermore, the size, depth, number, and distribution of the recesses 33 can be set as appropriate.

[Control of light emission intensity of light source unit 21 by light emission control unit 51]
Next, the light emission control part 51 which controls the light emission intensity of the light source part 21 is demonstrated. A CPU inside the housing 10 or a microcomputer built in the front panel 20 functions as the light emission control unit 51. In the present embodiment, the light emission intensity of each light source unit 21 is controlled in order to display a moving illumination pattern on the illumination unit 28 without using a moving mechanism.

  In the following description, among the light source sections 21, the light source sections 21_1, 21_3, 21_5,..., 21_19 arranged in odd numbers are collectively referred to as “odd group light source sections 21”. In addition, among the light source units 21, even-numbered light source units 21_2, 21_4, 21_6,..., 21_20 are collectively referred to as “even-numbered light source units 21”.

  In the present embodiment, the light emission control unit 51 controls the light emission intensity of each light source unit 21 so that the way of changing the light emission intensity in the adjacent light source units 21 is different. For example, when the light emission intensity of the odd-numbered light source units 21 is increased, the light emission intensity of the even-numbered light source units 21 is decreased. On the other hand, when the emission intensity of the odd-numbered light source units 21 is reduced, the emission intensity of the even-numbered light source units 21 is increased. With this configuration, the position of the emitted light projected onto the projection plate 26 changes as the light emission intensity changes, so that the illumination unit can be controlled by repeatedly changing the light emission intensity of the even group and odd group. As a result, the illumination pattern having fluctuations can be displayed on the illumination unit 28 without using the drive mechanism.

  FIG. 6 shows a circuit diagram of the light source unit 21_4, the light source unit 21_5, and the light source unit 21_20 (that is, a part of the light source unit 21 constituting the illumination generation unit 40). As shown in the figure, the light emission control unit 51 outputs, to the signal conversion unit 52, a control signal S_od for controlling the light emission intensity of the odd-numbered light source units 21 to the signal line 61, and the even-numbered light source units. A control signal S_ev for controlling the light emission intensity 21 is output to the signal line 62. The signal conversion unit 52 performs PWM control on the LEDs constituting each light source unit 21 based on the received control signal. In addition, since PWM control of LED using a transistor is well-known, detailed description is abbreviate | omitted.

  The signal line 66 for controlling the light emission intensity of the red LEDs of the odd-numbered light source units 21 is common to the light source unit 21_1 and the other odd-numbered light source units 21. Similarly, the signal line 67 and the signal line 68 for controlling the emission intensity of the green LED and the blue LED are also common.

  On the other hand, the signal line 63 for controlling the emission intensity of the red LEDs of the even-numbered light source units 21 is common to the light source unit 21_4 and the light source unit 21_4. Similarly, the signal line 64 and the signal line 65 for controlling the emission intensity of the green LED and the blue LED are also common. The same applies to the light source units 21 of other even-numbered groups not shown in FIG.

  FIG. 7 is a diagram showing temporal changes in the light emission duty (light emission intensity) of each of the odd-numbered light source units 21 and the even-numbered light source units 21. As shown in the figure, the odd-numbered light source units 21 and the even-numbered light source units 21 have the same period of change in light emission intensity but are in opposite phases. That is, in the same figure, the direction of the change in the emission intensity in the adjacent light source units 21 is controlled to be different. Note that the time change shown in FIG. 7 is merely an example. That is, any control pattern may be used as long as it is controlled so that periods of different emission intensity changes in the adjacent light source units 21 are included. In addition, the odd and even groups may be controlled so that the maximum and minimum values of the light emission duty are different, the phase difference between them may be less than a half cycle, and the periods may be different. You may control to. Further, in FIG. 7, the light emission duty is periodically changed around 50%, but this center value may be other values.

  In this way, by controlling the temporal change in the light emission intensity of the odd-numbered light source units 21 and the even-numbered light source units 21, a desired illumination pattern can be displayed on the illumination unit 28. Moreover, the lifetime of the illumination production | generation part 40 can be achieved by implement | achieving the light source part 21 with LED.

  In the present embodiment, the same light emission control is performed for each of the red, green, and blue LEDs shown in FIG. 6, but the light source unit 21 is divided into an odd group and an even group, and one set ( For example, different light emission intensities may be performed for each of R, G, and B), whereby full-color fluctuations can be generated.

  Further, by providing sound measuring means (for example, a well-known volume meter, FFT analyzer, etc.) for measuring the microphone input sound (performance music and singing voice), the measurement result is output to the light emission control unit 51. The illumination of the illumination unit 28 can be changed.

  In the conventional configuration, since noises such as motor rotation noise and gears are also input to the microphone, it is difficult to use the microphone input sound for illumination change control. However, in this embodiment, since noise as in the conventional configuration does not occur, “fluctuation” can be generated only by a performance song or singing voice, so “fluctuation” by microphone input sound is used as a karaoke performance effect. be able to.

  As described above, according to the present embodiment, the emitted light from each light source unit 21 whose emission intensity is controlled passes through the optical path changing unit 30 and is projected onto the projection plate 26. Then, by forming the recess 33 in the optical path changing unit 30, it is possible to change a part of the optical path of the emitted light. That is, the illumination intensity control with respect to the emitted light and the depression 33 can be combined to display an illuminated illumination pattern on the illumination unit 28. And since it is the structure which does not require a moving mechanism, an effective illumination can be produced for karaoke, without generating an unpleasant sound and an unnecessary sound.

  The present invention is not limited to the above-described embodiment, and it goes without saying that various improvements and modifications can be made without departing from the scope of the present invention.

  For example, in the above-described embodiment, the light source unit 21 is divided into two groups of the odd group and the even group, and the light emission control is performed, but the issue control may be performed by dividing into three or more groups.

DESCRIPTION OF SYMBOLS 20 ... Front panel 21 ... Light source part 22 ... Light-shielding part 24 ... 1st reflecting plate 25 ... 2nd reflecting plate 26 ... Projection part 28 ... Illumination part 30 ... Optical path change part 40 ... Illumination generation part 51 ... Light emission control part

Claims (2)

A karaoke device front panel provided on the front of the karaoke device housing,
The panel is
On the inner bottom surface of the panel, a plurality of light source units arranged at predetermined intervals in the width direction of the panel, and
A first optical path changing section having a circular arc shape in a side view fixed at a position covering the light source section;
A second optical path changing unit having an arc shape in a side view fixed on the upper side of the first optical path changing unit;
A projection plate;
With
Concavities and convexities are formed on the inner surfaces of the first and second optical path changing portions,
The light emission intensity of each light source unit is controlled based on a predetermined control signal so as to include a period in which the direction of change of the light emission intensity in the adjacent light source unit is different,
A part of the emitted light from each of the light source units whose emission intensity is controlled is changed on the optical path by the first and second optical path changing units and projected onto the projection plate, thereby moving on the projection plate. A certain illumination pattern of is formed,
A front panel for a karaoke device. The panel is a light-shielding part disposed between the light source parts on the inner bottom surface of the panel,
A karaoke apparatus front panel, further comprising: