JP2008058426A - Light emitting display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light emitting display device for an operation part of a voice research console which is superior in light diffusion property, visibility, and shock resistance and can have a lens easily attached and detached. <P>SOLUTION: A display panel 3 is formed by stacking and uniting two metal plates together, and has a large-diameter opening part formed in the top-side metal plate and a small-diameter opening part formed in the reverse-side metal plate. A flange part 4a provided on the lens 4 as a light guide member is engaged with an edge of the small-diameter opening part on the reverse side to stably mount the display panel 3 and lens 4. Further, a projection part is formed at an outer periphery of the lens 4, and is engaged with a step part formed on an internal surface of a lens holder 5 as a light shielding member. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a light-emitting display device that displays function information of an operation unit using a light-emitting element in an operation unit such as various switches installed on a voice control console, for example.

  When a broadcast program is produced, an audio adjusting table called a mixer is generally used. This voice adjustment console is connected to a number of voice input devices such as speakers and microphones, and also includes input line selection, input level setting and correction, tone adjustment, output destination selection and adjustment, etc. Various switches for performing adjustment parameter setting operations corresponding to ten adjustment functions and rotary and slide operation units are installed.

  Character information indicating the function for displaying the function of each operation unit is written on the operation unit of the voice adjustment console. Here, in order to clarify the function display of each operation unit, an LED is installed as a light emitting element next to the function display to illuminate, or the function display is written on the surface of the lens such as acrylic resin, and the function display The function display itself is displayed by installing the LED so as to face the surface opposite to the surface.

  As shown in FIG. 3, the light-emitting display device using LEDs as the light-emitting elements includes an LED 31 installed on a certain substrate, a lens 32 arranged to face the LED 31, and a light-shielding plate 33 that holds the lens 32. , And a knob 34 that shields the periphery of the display surface of the lens 32. That is, with these configurations, the light emitted from the LED 31 is incident on the incident surface 32a of the lens 32 and is emitted to the outside from the display surface 32b of the lens 32.

  By the way, when the above lens is installed in the function display device, since the locking portion is not provided, it cannot be stably attached, and it is inevitable that the lens vibrates up and down, left and right while the device is in operation. It was. On the other hand, a method of adhering the knob or the lens to the light shielding plate that supports the side surface is also conceivable, but it is difficult to attach and detach the lens, and it is difficult to replace the lens when the lens is damaged.

  In addition, the above lens is made of acrylic resin or polycarbonate resin with excellent productivity, but it is not satisfactory in terms of light diffusivity, and it is possible to avoid the image from appearing blurred or blurred. There wasn't. Furthermore, since the light emitting element is not on the lens display surface, it is in a situation where it is not possible to clearly express the color as a function display of the operation unit.

  Therefore, the present invention is to provide a functional light emitting display device of an operation unit in a voice surveying table which is excellent in light diffusibility, visibility and impact resistance and which can be easily attached and detached.

  In order to solve the above problems, the invention of claim 1 includes a substrate provided with a light emitting element, and a display panel having a display unit through which light from the light emitting element passes, the light emitting element and the display panel, In the light emitting display device, a light guide member having one end opposed to the light emitting element and the other end opposed to the display portion is disposed, and the light guide member is covered with a light shielding member on the outer peripheral side surface thereof. A flange portion projecting to the outer periphery is formed at the end portion of the optical member on the display portion side, and this flange portion engages with the edge of the opening portion of the display panel from the surface side of the display panel and The optical member and the light shielding member are formed with a fitting structure that locks the light shielding member when the light shielding member is fitted into the light guide member.

  In the above-described aspect, since the flange portion protruding to the outer periphery is formed at the end portion of the light guide member on the display portion side, this flange portion is engaged with the edge of the opening portion of the display panel, and the stable guide is provided. Mounting of the optical member and the display panel can be realized. That is, since the bonding and welding are not performed, the light guide member can be easily attached and detached. In addition, when the light shielding member is fitted into the light guide member, a fitting structure for locking the light shielding member is formed, so that a strong and stable assembly is possible, and a light emitting display device with excellent impact resistance is provided. be able to.

  According to a second aspect of the present invention, in the light emitting display device according to the first aspect, a sheet-like member that covers the surface of the light guide member engaged with the display panel is provided on the upper surface of the display panel. A transparent portion is formed at a portion facing the light guide member, and an opaque portion is formed around the transparent portion.

  In the above-described aspect, since the sheet member that covers the surface of the light guide member engaged with the display panel is provided, the light emitting display from the light emitting element can be performed in the transparent portion, and the portion where the light emitting display is not performed is provided. Light can be blocked by the opaque portion. For this reason, it is possible to clearly illuminate the function information by forming a portion to be displayed as the function information as a transparent portion of the sheet member and making the other portion an opaque portion.

  According to a third aspect of the present invention, in the light emitting display device according to the first or second aspect, the display panel is formed by laminating and integrating two metal plates, and is formed on the upper metal plate. The flange portion of the light guide member enters the large diameter opening portion, and the main body portion of the light guide member is inserted into the small diameter opening portion formed in the metal plate on the lower surface side, thereby opening the flange portion and the lower surface side opening. The edge with the part is engaged.

  In the above aspect, since the edge of the opening part of the lower surface side of the display panel which laminated | stacked the flange part of the light guide member and two metal plates engages, the attachment of the stable light guide member and a display panel is possible. The light guide member can be easily attached and detached because the edge of the small-diameter opening only supports the flange portion.

  According to a fourth aspect of the present invention, in the light-emitting display device according to any one of the first to third aspects, a protrusion is provided on one of the light guide member outer peripheral side and the light shielding member inner peripheral side, and the other is associated therewith. A stepped portion is formed, and the protruding portion and the stepped portion engage with each other when they are fitted.

  In the aspect as described above, the protrusion is formed on one of the outer peripheral side surface of the light guide member and the inner peripheral side surface of the light shielding member, and the step portion that engages with this is provided on the other side. By engaging the portions, the light guide member and the light shielding member can be stably fitted. In addition, it is possible to provide a light-emitting display device that has excellent impact resistance due to stable fitting and does not leak light emitted from the light-emitting element from the light guide member, and has high visibility.

  According to a fifth aspect of the present invention, in the light emitting display device according to the fourth aspect of the invention, any one of the projecting portion and the step portion that slides when the light guide member and the light shielding member are fitted is inclined along the sliding direction. It is characterized by being part.

  In the aspect as described above, the protrusion or step has an inclined portion along the sliding direction, so that the protrusion and the step are easily engaged when the light guide member and the light shielding member are fitted. The light shielding member can be fitted into the light guide member quickly and accurately.

  According to a sixth aspect of the present invention, in the light-emitting display device according to any one of the first to fifth aspects, the light guide member is related to a display panel having a flange engaged with the light guide member and an outer peripheral side surface of the light guide member. It is characterized in that it is sandwiched between the combined light shielding members and fixed to the display panel.

  In the above aspect, since the light guide member is sandwiched between the display panel and the light shielding member, the light guide member can be prevented from shaking during operation of the device, and a highly stable display device can be realized. Is possible. Further, since the light guide member faces the display unit and the outer peripheral side surface is fitted with the light shielding member, the light emitted from the light emitting element can be transmitted through the light guide member without leaking to the outside. Accordingly, it is possible to provide a light-emitting display device with high visibility.

  The light-emitting display device according to any one of claims 1 to 6, wherein the light guide member is made of a transparent resin in which a light diffusion member is mixed. It is characterized by that.

  In the above aspect, since the light diffusing member is mixed in the light guide member, the light diffuses in the light guide member, and uniform light can be illuminated in the display portion of the display panel. Therefore, visibility can be improved by light diffusion in the light guide member, and a light emitting display device that can identify each color to be illuminated can be provided.

  According to an eighth aspect of the present invention, in the light emitting display device according to any one of the first to seventh aspects, at least one of an end surface on the light emitting element side and an end surface on the display panel side of the light guide member emits light. It is characterized by being subjected to rough surface treatment for irregular reflection.

  In the above-described aspect, since the rough surface treatment is performed on the end surface on the light emitting member side of the light guide member or on the end surface on the display panel side, the light emitted from the light emitting element is diffusely reflected to thereby display the display unit of the display panel. It is possible to illuminate uniformly in all directions from the top, improving visibility.

  According to the present invention as described above, the flange portion provided at the end portion of the light guide member on the display portion side and the edge of the metal plate on the lower surface side constituting the display panel are engaged with each other. The light member and the display panel can be attached, and a light emitting display device excellent in impact resistance can be provided. In addition, a protrusion is formed on one of the outer peripheral side surface of the light guide member and the inner peripheral side surface of the light shielding member, and a step portion that engages with the other is provided on the other side. Accordingly, the fitting between the light guide member and the light shielding member is stabilized, and furthermore, light emitted from the light emitting element does not leak from the light guide member, so that visibility can be kept high.

  Furthermore, by mixing a light diffusing medium in the light guide member, light diffusion can be performed using the characteristics of this material, and the light from the light emitting element can be uniformly illuminated on the display portion of the display plate. It is possible to clearly identify functional information by color.

[1. Constitution]
Hereinafter, the configuration of the embodiment of the present invention will be specifically described with reference to FIG.
The overall configuration uses an LED 1 as a light emitting element, a printed circuit board 2 on which the LED 1 is installed, a display panel 3 having a display unit through which light from the LED 1 passes, one end facing the LED 1, and the other end a display unit. And a lens holder 5 that is a light-shielding member that covers the outer periphery of the lens 4. A sheet-like member 6 that covers the surface of the lens 4 engaged with the display panel 3 is provided on the upper surface of the display panel 3.

  The LED 1 used as a light emitting element is a directional self-luminous device having a constant viewing angle, and is installed on the printed circuit board 2. The LED 1 uses an RGB chip type, and all colors can be expressed by combining red, green, and blue. The light emitted from the LED 1 passes through a lens 4 that is a light guide member to be described later, and is emitted to the outside at the display unit of the display panel 3.

  The display panel 3 is formed by stacking and integrating two metal plates. A large-diameter opening is formed in the upper-surface metal plate, and a small-diameter opening is formed in the lower-surface metal plate. Yes. The edge of the small-diameter opening on the lower surface side is engaged with the flange portion 4a provided on the lens 4 that is the light guide member, so that the display panel 3 and the lens 4 can be mounted stably. A large-diameter opening formed in the upper metal plate corresponds to the display unit.

  As an example, the lens 4 which is a light guide member is made of a polycarbonate resin whose basic material is produced from bisphenol A and carbonyl chloride (or diphenyl carbonate). The polycarbonate lens 4 is characterized by lightness, impact resistance, heat resistance, nonflammability, electrical conductivity, and high transparency, and is superior to other synthetic resins. In addition to this carbonate resin, calcium carbonate or the like is mixed as a light diffusing material in order to spread light in the display portion of the display panel.

  The lens 4 is formed with a flange portion 4 a that protrudes from the outer periphery of the display side end portion, and the flange portion 4 a is opposed to the edge of the opening of the metal plate on the lower surface side of the display panel 3. 3 is engaged from the surface side. This makes it possible to mount the lens 4 and the display panel 3 stably, and since the lens 4 is not bonded or welded to the display panel 3, the lens 4 can be easily attached and detached.

  Further, a protrusion is formed on the outer peripheral side surface of the lens 4 and has a structure that engages with a step formed on the inner surface of a lens holder 5 that is a light shielding member described later. In the present embodiment, this protrusion is formed on the side of the lens 4 that is the light guide member that faces the LED 1, but can be provided on the outer peripheral side surface of the lens 4 without any particular limitation. It is.

  Note that the end surface of the lens 4 on the LED 1 side is subjected to a rough surface treatment to diffusely reflect light. By this rough surface treatment, the light emitted from the LED 1 is reflected in various directions on the end surface of the lens 4 on the display unit side. Therefore, since the light emitted from the end face of the lens 4 can be detected from various directions, it is possible to identify highly visible light that is illuminated uniformly even in a three-dimensional space.

  As an example, the lens holder 5 is formed from polyacetal (polyoxymethylene), and is formed as a black light shielding member so as to cover the outer periphery of the lens 4 so that light from the lens 4 does not leak. A step portion for engaging a protrusion formed on the outer periphery of the lens 4 is provided on the inner peripheral surface of the lens holder 5 that covers the outer peripheral surface of the lens 4. The shape of the stepped portion is not particularly limited as long as it corresponds to the protruding portion of the lens 4. In addition, when the lens 4 and the lens holder 5 are fitted, the stepped portion is an inclined surface that is subjected to a taper process or the like along the sliding direction in correspondence with the projecting portion that slides.

  The polyacetal (commonly known as POM), which is the material of the lens holder 5, is a highly crystalline thermoplastic resin that is a polymer formed by continuous oxymethylene, and has high physical properties and moldability, as well as lubricity and abrasion resistance. Excellent wear resistance, fatigue resistance, creep resistance, chemical resistance, etc.

  The sheet-like member 6 is made of the same polycarbonate as the material of the lens 4, and is provided on the upper surface of the display panel 3 so as to cover the surface of the lens 4 engaged with the display panel 3. In the sheet-like member 6, a transparent portion is formed by a mat printing process on a portion facing the lens 4 to be luminescently displayed, while an opaque portion that does not perform a luminescent display is formed around the transparent portion by a light shielding printing process. Has been. Thereby, it is possible to transmit light only at a portion where light emission display is desired, and light which is not displayed can be shielded by back side shading printing.

[2. Action]
The operation of the light emitting display device of the present embodiment having the above-described configuration is as follows.
First, when the lens 4 which is a light guide member is fitted into the opening of the display panel 3, the flange 4a provided at the end of the lens 4 on the display unit side is formed of two metal plates constituting the display panel. Of these, it engages with an edge formed with a small-diameter opening on the lower surface side. Thereby, the lens 4 and the display panel 3 are attached in a stable manner. Then, on the upper surface of the display panel 3, a transparent portion that performs matt printing processing and a non-light emitting display opaque portion that is subjected to light-shielding printing processing are formed on the upper surface of the display panel 3 so as to cover the surface of the lens 4 engaged with the display panel 3. A polycarbonate sheet-like member 6 is attached.

  Next, the lens 4 fitted into the opening of the display panel 3 and the lens holder 5 which is a light shielding member are fitted, but in order to enable stable assembly, the protrusions formed on the outer peripheral side surface of the lens 4 and the lens The step formed on the inner peripheral side surface of the holder 5 is engaged. The lens 4 is sandwiched between the display panel 3 engaged with the flange portion 4 a and the lens holder 5, which is a light shielding member engaged with the outer peripheral side surface of the lens 4, and is fixed to the display panel 3. Then, the light emitting display device is completed by assembling the printed circuit board 2 on which the LED 1 is installed so as to face the lens 4 to the lens holder 5.

  In the light-emitting display device assembled as described above, the LED 1 installed on the printed circuit board 2 emits light so that the light is diffused and guided in the lens 4 that is a light guide member, and is attached to the upper surface of the display panel 3. From the transparent portion that has been subjected to the mat printing process as the light emitting display portion of the sheet member 6, each color is uniformly illuminated in such a manner that it can be identified.

  According to the present embodiment as described above, the flange portion provided at the end portion on the display portion side of the light guide member is engaged with the edge of the metal plate on the lower surface side that constitutes the display panel. Thus, the light guide member and the display panel can be mounted, and a light emitting display device excellent in impact resistance can be provided. In addition, since the protrusion is formed on one of the light guide member outer peripheral side and the light shielding member inner peripheral side, and the other is provided with a stepped portion that engages with this, the protrusion and the stepped portion engage with each other. Accordingly, the fitting between the light guide member and the light shielding member is stabilized, and furthermore, light emitted from the light emitting element does not leak from the light guide member, so that the visibility can be kept high.

  Furthermore, by mixing a light diffusing medium in the light guide member, light diffusion can be performed using the characteristics of this material, and the light from the light emitting element can be uniformly illuminated on the display portion of the display plate. It is possible to clearly identify functional information by color.

[3. Other Embodiments]
In the embodiment as described above, the display panel is composed of two metal plates, a large-diameter opening is formed in the upper metal plate, and a small-diameter opening is formed in the lower metal plate. The present invention is not limited to the one in which the portion is formed, and includes a configuration in which an edge corresponding to the large-diameter opening and the small-diameter opening is formed on one metal plate or plastic plate.

  In the present embodiment, only one LED 1 is installed on the printed circuit board 2, but a configuration in which a plurality of LEDs 1 are provided in accordance with the cross-sectional area of the lens 4 is also possible. As a result, even when displaying functional information having a relatively large area, it is possible to diffuse and guide the light with a sufficient amount of light, so that it is possible to clearly display the functional information with a uniform emission color ( Figure 2).

  In addition, in the present embodiment, a protrusion is formed on the outer periphery of the lens 4. However, the protrusion is formed on the inner periphery of the lens holder 5 that is a light shielding member, and a step portion that engages with the protrusion is formed on the lens 4. It is also possible to adopt a configuration formed on the outer periphery of the. In this case, the stepped portion of the lens 4 has a configuration in which an inclined surface is formed by taper processing or the like along the direction in which the stepped portion slides.

The side view which shows one Embodiment of this invention. The side view which shows other embodiment of this invention. The top view which shows a prior art.

Explanation of symbols

1 ... LED
DESCRIPTION OF SYMBOLS 2 ... Printed circuit board 3 ... Display panel 3a ... Metal plate 3b of large diameter opening part ... Metal plate 4 of small diameter opening part ... Lens 4a ... Flange part 5 ... Lens holder 6 ... Sheet member 31 ... LED (prior art)
32. Lens (prior art)
32a: Incident surface (prior art)
32b ... display surface (prior art)
33 ... Shading plate (prior art)
34 ... Knob (prior art)

Claims (8)

A substrate having a light emitting element and a display panel having a display unit through which light from the light emitting element passes, one end facing the light emitting element and the other end displaying between the light emitting element and the display panel In the light emitting display device in which a light guide member facing the part is disposed, and a light shielding member is coated on an outer peripheral side surface of the light guide member,
At the end of the light guide member on the display portion side, a flange portion protruding to the outer periphery is formed, and this flange portion engages with the edge of the opening portion of the display panel from the surface side of the display panel,
The light-emitting display device, wherein the light guide member and the light shielding member are formed with a fitting structure for locking the light shielding member when the light shielding member is fitted into the light guide member.   A sheet-like member that covers the surface of the light guide member engaged with the display panel is provided on the upper surface of the display panel, and a transparent portion is formed on a portion of the sheet-like member that faces the light guide member. The light emitting display device according to claim 1, wherein an opaque portion is formed around the transparent portion.   The display panel is formed by laminating and integrating two metal plates. The flange portion of the light guide member enters the large-diameter opening formed in the upper metal plate, and the lower metal plate. The edge part of the said flange part and the opening part of a lower surface side is engaging by inserting the main-body part of a light guide member in the small diameter opening part formed in this, The Claim 1 or Claim characterized by the above-mentioned. Item 3. A light-emitting display device according to Item 2.   A protrusion is formed on one of the light guide member outer peripheral side and the light shielding member inner peripheral side, and the other is formed with a stepped portion that engages with the other. The light-emitting display device according to any one of claims 1 to 3, wherein   5. The light emitting display according to claim 4, wherein one of the protrusion and the step that slides when the light guide member and the light shielding member are fitted is an inclined portion along the slide direction. apparatus.   The said light guide member is clamped by the display panel with which the flange engaged, and the light-shielding member engaged with the light guide member outer peripheral side surface, and is being fixed to the display panel. 6. The light emitting display device according to any one of 5 above.   The light-emitting display device according to any one of claims 1 to 6, wherein the light guide member is made of a transparent resin in which a light diffusion member is mixed.   At least one of the end surface on the light emitting element side and the end surface on the display panel side of the light guide member is subjected to a bare surface treatment for irregularly reflecting light, according to any one of claims 1 to 7. The light-emitting display device described.

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