JP4966126B2 - Luminescent display and LED indicator - Google Patents

Description

  The present invention relates to a light-emitting display body using an LED and an LED display lamp using the light-emitting display body, and particularly to a light-emitting display body and an LED display lamp that make it easy to visually recognize the light emission of an LED when used outdoors. is there.

  An LED (light emitting diode) is a semiconductor element having high color purity due to its narrow spectrum half width, and is a light emitting element that emits light in a small, efficient, and vivid color. In recent years, blue LEDs have been put into practical use, and as a result, LEDs of three primary colors of red, green, and blue are prepared, and full-color display can be performed using these LEDs.

  In addition, the LED has low power consumption, does not generate heat, and has a long life. Therefore, the LED is used in various display portions, and is suitably applied to road signs, guide signs inside buildings, and the like. The contents displayed by these display devices are, for example, predetermined phrases such as “under construction” and “accidents happening ahead”, and display contents stored in the built-in memory are displayed. .

  Moreover, the LED display lamp installed outdoors can also be configured by controlling the light emitting section and the light emission order of the light emitting display body simply arranged in the shape of an arrow or a plurality of light emitting display bodies arranged in the sign frame. it can.

  This LED indicator lamp includes a memory for storing a plurality of display data in advance, display instruction means for instructing data to be displayed, and a control device for taking out the instructed data from the memory and displaying it on the display unit. It is configured.

  Further, since the LED diffuses light and the irradiated surface becomes dark, a condensing lens that does not diffuse light is required when a light emitting display is used for an indicator lamp or a warning lamp installed outdoors.

  However, a condensing lens is provided in front of the LED, and it is possible to focus and project the light emitted from the LED in the front direction without diffusing the light, but side radiation that cannot be captured by the lens. There is light. In particular, when the focal length of the lens is long and the distance between the light emitting display and the lens is long, the side radiation light that cannot be captured by the lens increases.

Therefore, an LED light projecting device having a lens body having a central prism portion for converging a light beam at a central portion and an outer ring prism portion for converging side radiation light has already been filed (for example, see Patent Document 1). .
JP 2002-43629 A

  However, if the lens body has a complicated shape integrally including the central prism portion and the outer ring prism portion, it is not easy to manufacture and the manufacturing cost increases. Furthermore, in order to construct LED indicator lamps installed outdoors, it is desirable to make the brightness in the front direction of the display panel brighter for easy visual recognition and to effectively use the light of each LED as the light emission of the light emitting display. .

  Therefore, there is a demand for a light-emitting display body that has a simpler configuration, brightens the front luminance, and can focus side radiation.

  In order to solve the above problems, an object of the present invention is to provide a light-emitting display body that has a simpler configuration, brightens the front luminance, and can focus side radiation, and uses and recognizes the light-emitting display body. It is providing the LED indicator lamp which enables the display which is easy to do.

In order to achieve the above object, an invention according to claim 1 is a light-emitting display body including an LED (light-emitting diode) and a surface panel provided on the front surface of the LED, and is provided between the LED and the surface panel. A convex lens body that focuses light emitted from the LED at a central portion within a predetermined angle range from the light source, a first cylindrical portion that integrally covers the LED, and a diameter that expands from the cylindrical portion in a tapered shape a cylindrical inner surface and a second cylindrical portion contiguous with the parts and the enlarged diameter portion covers the outer edge of the convex lens body, suddenly contiguous to the first outer peripheral portion and said first outer peripheral portion positioned at the site of the LED A first taper portion that expands the diameter, a second outer peripheral portion that continues to the first taper portion, and that gradually increases in diameter, and a second taper portion that continues to the second outer peripheral portion and reaches the front end surface that contacts the surface panel. And a prism body that is entirely cylindrical. The predetermined angle range of the light, and projected to the front face of the lens body and prism body, is characterized by defining the viewing angle to be emitted.

  According to the first aspect of the present invention having the above-described configuration, it is possible to improve the visibility of the central portion and increase the front luminance through the convex lens body that focuses the light beam at the central portion. In addition, by projecting light outside the predetermined angle range in the front direction and emitting light from the front end face that contacts the front panel, the side radiated light is collected and displayed at a predetermined viewing angle. A light-emitting display body can be obtained.

  According to a second aspect of the present invention, the front panel is made of a light-transmitting material, and the convex lens body is integrally formed so as to protrude like a convex lens on the back side or front side of the front panel or on both sides. It is characterized by that.

  According to the invention according to claim 2 having the above-described configuration, since the front panel has a function as a display panel and a function as a lens, the number of parts can be reduced and a compact light-emitting display body is formed. Can do.

  According to a third aspect of the present invention, there is provided a protrusion guide that defines the position of the second tapered portion around the position where the prism body abuts on the back side of the front panel, and the front end surface with respect to the convex lens body is provided. The contact position is defined.

  According to the invention of claim 3 having the above-described configuration, the front end surface can be engaged between the outer edge portion of the convex lens body and the inner diameter portion of the projection guide, and can be fixed at a correct position. The positional relationship between the prism body and the surface panel can always be fixed correctly.

The invention according to claim 4 is an LED display in which a plurality of light-emitting display bodies having LEDs (light-emitting diodes) are arranged inside the display panel, and a surface panel having light transmissivity as a display unit is provided on the surface of the display panel. The light emitting display body does not interfere with the light beam emitted from the LED and the convex lens body for converging the light beam at the central portion within a predetermined angle range from the light source, and the light beam at the central portion, A prism body that defines a viewing angle for emitting and displaying light outside the predetermined angle range in a front direction where the convex lens body is positioned, and the convex lens body is arranged on one of the back side or the front side of the front panel. A first cylindrical portion that protrudes in the form of a convex lens at a predetermined position facing the LED, or is formed integrally with the prism body, and the prism body is a cylindrical body and integrally covers the outer surface of the LED When A cylindrical inner surface and a second cylindrical portion that covers the outer edge of the convex lens body continuous with the enlarged diameter portion and the enlarged diameter portion extending in a tapered shape from the cylindrical portion, a first outer circumferential portion located at a site of the LED A first taper portion that is connected to the first outer peripheral portion and suddenly increases in diameter; a second outer peripheral portion that is connected to the first taper portion and that gradually increases in diameter; and a front end surface that is connected to the second outer peripheral portion and contacts the surface panel. The second taper portion is provided .

  According to the invention according to claim 4 having the above-described configuration, the central lens improves the visibility through the convex lens body that focuses the light beam at the central portion, the front luminance is increased, and light outside the predetermined angle range is projected to the convex lens. Since the display lamp is provided with a plurality of light-emitting display bodies capable of collecting the side radiation light through the prism body that projects in the front direction where the body is located, the LED display lamp can be easily recognized. Moreover, since the several convex lens body is integrally molded with the surface panel, a number of parts can be reduced and a low-cost LED indicator lamp can be obtained.

According to the invention according to claim 4 having the above-described configuration, the cylindrical inner surface portion allows the central portion of the light beam within the predetermined angle range from the light source to be inserted as it is, so that it does not interfere with the light beam of the central portion. The front end surface that collects light outside a predetermined angle range through the first outer peripheral portion, the first tapered portion, and the second outer peripheral portion, projects the light in the front direction where the convex lens body is located, and contacts the front panel Since the prism body that emits light is provided, it is possible to obtain an LED indicator lamp that includes a light-emitting display body that can increase the front luminance and focus the side radiation light.

According to a fifth aspect of the present invention, there is provided a projection guide for defining the arrangement position of the second tapered portion around the position where the prism body abuts on the back side of the front panel, The contact position of the front end surface is defined.

According to the invention according to claim 5 having the above-described configuration, the positional relationship among the LEDs, the convex lens body, and the prism body can be always fixed correctly, and a plurality of light-emitting display bodies are aligned at desired predetermined positions. A compact and low-cost LED indicator lamp can be obtained.

According to a sixth aspect of the present invention, the display panel is mounted on an upper portion of a leg via a support shaft, and the display panel is attached to a strip-shaped outer frame, a central frame portion, the central frame portion, and the strip-shaped outer frame. A plurality of strip-shaped connecting portions connected to each other, the support shaft is provided in the central frame portion, and a plurality of the light-emitting display bodies are disposed in the strip-shaped outer frame and the strip-shaped connecting portion. It is characterized by being.

According to the invention according to claim 6 having the above-described configuration, it is possible to display various patterns by controlling the order and timing of light emission of the light-emitting display body provided in the belt-like outer frame and the plurality of belt-like connecting portions. Become.

According to a seventh aspect of the present invention, there is provided an LED display control unit for controlling light emission of the light emitting display body so as to display a predetermined light emission pattern, and a memory for storing patterned display contents in the display panel. And an on / off switch, a lighting pattern switch, and a lighting time zone switch are provided on the back surface of the central frame.

According to the invention according to claim 7 having the above-described configuration, the light-emitting display body provided in the polygonal belt-like outer frame and the plurality of belt-like connecting portions blinks or emits light, and by controlling the order and timing thereof, Various patterns can be displayed with easy recognition. Furthermore, not only the contents to be displayed can be selected but also the setting or control can be performed so that the contents are displayed when necessary or at a necessary time zone.

  As described above, according to the present invention, a convex lens body that focuses a light beam at a central portion within a predetermined angle range from a light source of light emitted from an LED, and a front direction in which the convex lens body positions light outside the predetermined angle range. Since the light-emitting display body is provided with the prism body that projects the light, the front-side brightness is increased and the side radiation light is condensed to obtain a light-emitting display body excellent in front view. Furthermore, since a plurality of light-emitting display bodies are provided and the LED display lamp uses a surface panel integrally formed with a convex lens body corresponding to each light-emitting body, a compact, low-cost and easy-to-recognition display is provided. Possible LED indicator lights can be obtained.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a light emitting display and an LED indicator according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an example of a light-emitting display according to the present invention, where (a) is a cross-sectional view and (b) is a schematic explanatory view showing an optical path. FIG. 2 is a cross-sectional view illustrating an example of a display unit including a plurality of light-emitting display bodies according to the present invention. FIG. 3 shows an example of an LED indicator lamp according to the present invention, in which (a) is an overall front view and (b) is an enlarged view of a main part.

  As shown to Fig.1 (a), the light emission display body 1 is provided with LED (light emitting diode) 3 with which the board | substrate 4 is mounted | worn, and the surface panel 2 used as a light emission display surface. Further, the front panel 2 is formed with a convex lens body 20 for converging a light beam at a central portion within a predetermined angle range from a light source of light emitted from the LED 3, and includes a prism body 30 provided so as to cover the LED 3. ing. The prism body 30 exhibits a function of projecting light outside the predetermined angle range, which becomes side radiated light, in the front direction where the convex lens body 20 is located, and widening the viewing angle of light emitted from the small-diameter LED 3. .

  The prism body 30 is a cylindrical body, and is connected to the first cylindrical portion 31 that integrally covers the LED 3, the enlarged diameter portion 32 that extends from the cylindrical portion 31 in a tapered shape, and the enlarged diameter portion 32 of the convex lens body 20. A cylinder inner surface portion 40 having a second cylindrical portion 33 covering the outer edge portion, a first outer peripheral portion 34 located in the LED portion, and a first tapered portion 35 that is connected to the first outer peripheral portion 34 and suddenly expands in diameter. A second outer peripheral portion 36 that is continuous with the first taper portion 35 and gradually expands in diameter, and a second taper portion 37 that is continuous with the second outer peripheral portion 36 and reaches the front end face 38 that contacts the surface panel.

  Further, the arrangement positions of the front end face 38 and the second tapered portion 37 are defined around the position where the prism body abuts on the back side of the front panel 2, which corresponds to the periphery of the convex lens body 20 provided on the front panel 2. The protrusion guide 21 is provided to define the contact position of the front end face 38. The shape of the protrusion guide 21 is not particularly limited, but is an annular protrusion shape having an inner diameter that can completely accommodate the outer periphery of the front end surface 38 and a tapered guide surface that can slide against the front end surface 38. It is preferable.

  The convex lens body 20 can be provided on one of the back side and the front side of the light-transmitting front panel 2 or projecting into a convex lens shape on both sides and integrally molded. Further, as shown in the figure, when a convex lens is provided on the back side of the front panel 2, the front side of the front panel 2 serving as the display surface becomes a smooth display surface, so that good display is possible and contamination is difficult. It is easy to clean and is suitable.

  The inner diameter of the front end surface 38 is preferably large enough to match the outer edge portion of the convex lens body 20, and the front end surface 38 is engaged between the outer edge portion of the convex lens body 20 and the inner diameter portion of the projection guide 21. The position can be fixed.

  Therefore, the LED 3 and the prism body 30 and the convex lens body 20 that are mounted so as to cover the LED 3 have a desired correct positional relationship, and among the light emitted from the LED 3, the center within a predetermined angle range from the light source 3a. The luminous flux of the portion passes through the cylindrical inner surface portion 40 and is directly projected onto the convex lens body 20. Further, the light outside the predetermined angle range is incident on the prism body 30 and reflected from the inside, and is projected in the front direction where the convex lens body 20 is located, and the front end contacting the convex lens body 20 and the front panel 2. Radiated from part 38.

  As described above, light outside the predetermined angle range, which is side radiation, is converged and emitted from the front end face 38 of the prism body 30, so that the light emitted from the LED 3 is larger than the front end face 38. The display portion that emits light in a uniform manner can be used, and the viewing angle for light emission display can be defined while maintaining the light emission luminance.

  The outline of the optical path is shown in FIG. 1B, and the light that passes through the cylindrical inner surface portion 40 is directly emitted onto the convex lens body 20 to be focused light emission 300. The light passing through the prism body 30 is reflected to become light emission 310 from the convex lens body 20 part and light emission 320 emitted from the front end face 38 part.

  As described above, the light projected from the light source 3a is focused on the central light emitting part A1 corresponding to the convex lens body 20 part region and the outer ring light emitting part B1 located around and corresponding to the front end face 38 part. It has a configuration. That is, the light projected from the light source 3 a increases the front luminance via the convex lens body 20 and widens the viewing angle via the prism body 30.

  For this purpose, a plurality of light emitting display bodies 1 according to the present invention are provided at a predetermined interval, thereby forming a display portion with a bright front luminance and easy to visually recognize.

  An example is shown in FIG. In this example, the light emitting displays 1A, 1B, 1C, 1D, and 1E are arranged in a vertical row. The substrate 5 is held on the frame 5 via a plurality of support members 51, and a plurality of light emitting display bodies 1 (1A, 1B, 1C, 1D, 1E) are mounted on the substrate 4. Control signals are transmitted and power is supplied to each light emitting display 1 via a cable 6, and the cable 6 is connected to a control device via a connection plug 7 and a main body control cable 6A.

  If it is said structure, the timing of light emission of each light emission display body 1 (1A, 1B, 1C, 1D, 1E), the light emission time, and the light emission order can each be set freely and controlled by the control apparatus which is not shown in figure. It is possible to turn on all at once, repeatedly blink, or turn on in order and scroll display.

  The plurality of light emitting display bodies 1 are respectively a light emitting display body 1A including an LED 3A, a convex lens body 20A, and a prism body 30A, a light emitting display body 1B including an LED 3B, a convex lens body 20B, and a prism body 30B, an LED 3C, a convex lens body 20C, and a prism body 30C. A light-emitting display body 1C including the LED 3D, the convex lens body 20D, and the prism body 30D, and a light-emitting display body 1E including the LED 3E, the convex lens body 20E, and the prism body 30E.

  The convex lens bodies 20 </ b> A to 20 </ b> E can be integrally formed in a convex lens shape on one side or both sides of the front panel 2 having light transmittance. Further, the protrusion guides 21 described above are also integrally formed at the corresponding positions, and a plurality of light-emitting display bodies are aligned at a desired predetermined position, so that a compact and low-cost LED indicator lamp can be obtained.

  Next, an LED indicator lamp having a configuration capable of easily recognizing using a front panel that is provided with a plurality of light emitting display bodies and integrally formed with a convex lens body corresponding to each LED will be described with reference to FIG.

  FIG. 3A shows an embodiment of the LED indicator lamp 100 according to the present invention.

  The LED indicator lamp 100 has a leg body 110 and a display panel 120 mounted on the leg body 110 via a support shaft 134. Further, LED display portions 8A, 8B, 8C, 8D, 8E,... On which a plurality of light emitting display bodies 1 are disposed are provided on the surface of the display panel 120. There are provided an LED display control unit 106 for controlling the light emission of the light emitting display 1 to a predetermined display content, a memory unit 107 for storing patterned display content, and a battery 105. . Further, a solar panel 101 is installed on the top of the display panel 120.

  Further, the display panel 120 is provided with an outer light emitting portion provided in an annular shape and a plurality of inner light emitting portions provided in a radial direction. For this purpose, the display panel 120 may be formed in a disc shape or a polygonal plate shape, and the inner light emitting portion and the outer light emitting portion may be provided on the surface. A frame body including a frame 131, a central frame portion 132, and a plurality of belt-like connecting portions 133 connected to the central frame portion 132 and the belt-like outer frame 131 may be used. If it is this structure, the said light emission display body 1 will be arrange | positioned to the said strip | belt-shaped outer frame 131 and the said strip | belt-shaped connection part 133 which are strip | belt-shaped frames, respectively, and LED display part 8A, 8B-on the surface of the display panel 120. Can be formed into a desired shape.

  For this purpose, various patterns can be displayed (flashing display and scrolling display) by controlling the order and timing of flashing and light emission of the respective light-emitting display bodies 1 installed on the strip-shaped outer frame 131 and the strip-shaped connecting portion 133. LED display that can be easily recognized is possible. That is, the entire surface of the frame can be used as the LED display unit.

  The belt-like outer frame 131 may be in an annular shape or a polygonal shape, as long as the light-emitting display body 1 is continuously arranged along the outer shape.

  The LED display portion 8A shown in FIG. 3B has a shape in which a belt-like outer frame 131 and a belt-like connecting portion 133 are connected in a T-shape, and a plurality of LED display portions 8A, 8B˜ of this shape are combined. A disk-shaped or polygonal-plate-shaped display board 120 can be formed. In each LED display section, for example, light-emitting display bodies 1A, 1B, 1C, 1D, and 1E are arranged at predetermined intervals in a vertical row in the center. In addition, the light emitting display bodies 1F and 1G are provided in the belt-like outer frame 131 on the side of the light emitting display bodies 1A and 1B, respectively.

  The display contents of the plurality of light emitting display bodies are controlled via the memory unit 107 and the LED display control unit 106, and a control command for performing a predetermined display is generated. The display is displayed on the LED display. Display patterns include a display in which a large number of light-emitting display bodies arranged in a ring on the belt-shaped outer frame 131 blink in order, a display that blinks all at once, or a scroll that emits light so as to flow clockwise or counterclockwise. For example, a display or a display in which the light-emitting display bodies installed in the plurality of strip-shaped connecting portions 133 from the center to the outer frame are sequentially blinked or scrolled from the outside to the inside can be considered.

  In addition, a brightness change function that automatically adjusts the brightness between daytime and nighttime is provided, and an overheat prevention function and overcurrent protection function that monitor the heat generation of electrical components are provided, and the power is automatically shut down when an abnormality is detected It can also be set as the structure to do.

  Furthermore, a plurality of these display patterns are set in advance and stored in the memory unit 107, and a display corresponding to during construction, a display corresponding to this dead end, a display corresponding to the occurrence of an accident, etc. are arbitrarily set. Can be displayed.

  The forward feed speed, lighting time, etc. at the time of blinking can be set to any speed and time, and the scroll speed can also be set arbitrarily.

  In addition, on the operation surface (provided on the back surface of the central frame portion 132 in the present embodiment), an on / off switch serving as a power switch input unit, a lighting pattern switching switch for switching display contents, and nighttime It is possible to provide a lighting time zone switch for switching between daytime and daytime / nighttime continuous display.

  These operating conditions set by the on / off switch, lighting pattern switch, and lighting time zone switch are all communicated to the LED display control unit 106 having the memory unit 107 to perform a predetermined display. A control command is generated, and a predetermined display is displayed on the LED display unit by the control command.

  As described above, various patterns can be displayed (flashing display and scrolling display) by controlling the order and timing of flashing and light emission of each of the light emitting display bodies installed on the strip outer frame 131 and the strip connecting part 133. ) Is possible.

  The leg body 110 that supports the display panel 120 includes a foldable tripod 112 and a support column 111 that can be extended vertically. A center frame 132 of the display panel 120 is swung on the support column 111. Wearing freely. Therefore, if the tripod 112 is folded and the column 111 is shortened, the tripod 112 becomes compact and easy to carry. Moreover, it can be easily installed at an arbitrary place via the tripod 112, and the indicator lamp can be installed at an arbitrary height desired by expanding and contracting the support column 111.

  As described above, according to the present invention, the convex lens body that converges the light beam in the center within the predetermined angle range emitted from the light source of the LED, and the light outside the predetermined angle range in the front direction where the convex lens body is located. Since the light-emitting display body is provided with the projecting prism body, it is possible to obtain a light-emitting display body excellent in front view by increasing the front luminance and concentrating the side radiation light. In addition, a plurality of light-emitting display bodies are provided, and an LED display lamp using a front panel in which a convex lens body corresponding to each LED and prism body and a projection guide are integrally formed is used. An LED indicator lamp can be obtained.

  Furthermore, since the front end face can be engaged between the outer edge portion of the convex lens body and the inner diameter portion of the projection guide to fix the position of the prism body, the prism body mounted so as to cover the LED and the LED Even if it is an LED indicator lamp in which a plurality of LEDs are arranged, the front luminance and the viewing angle of light emitted from all the LEDs are aligned at a stable level. The LED indicator lamp can be easily viewed.

An example of the light emission display body which concerns on this invention is shown, (a) is sectional drawing, (b) is a schematic explanatory drawing which shows an optical path. It is sectional drawing which shows an example of a display part provided with two or more the light emission display bodies which concern on this invention. An example of the LED indicator lamp which concerns on this invention is shown, (a) is a whole front view, (b) is a principal part enlarged view.

Explanation of symbols

1 Luminescent display
2 Front panel
3 LED
4 Substrate 20 Convex lens body 21 Projection guide 30 Prism body 38 Front end face 40 Tube inner surface part

Claims (7)

A light emitting display comprising an LED (light emitting diode) and a front panel provided on the front surface of the LED,
A convex lens body that focuses light emitted from the LED between the LED and the front panel, and that converges a light beam at a central portion within a predetermined angle range from the light source;
A cylinder inner surface portion comprising a first cylindrical portion that integrally covers the LED, a diameter-expanded portion that extends in a tapered shape from the cylindrical portion, and a second cylinder portion that continues to the diameter-expanded portion and covers the outer edge portion of the convex lens body. And a first outer peripheral portion located at the LED portion , a first tapered portion that is connected to the first outer peripheral portion and suddenly increases in diameter, a second outer peripheral portion that is connected to the first tapered portion and gradually increases in diameter, and the first A prism body that includes a second taper portion that is continuous with two outer peripheral portions and reaches a front end surface that comes into contact with the surface panel, and is formed into a cylindrical body,
A light-emitting display body characterized in that light outside the predetermined angle range is projected onto the front end face portions of the convex lens body and the prism body to define a viewing angle to emit light.   2. The surface panel is made of a light-transmitting material, and the convex lens body is integrally formed so as to protrude into a convex lens shape on one of the back side or the front side of the surface panel or on both sides. The light-emitting display body as described in 2.   Protrusion guides are provided around the position where the prism body abuts on the back side of the front panel to define the arrangement position of the second tapered portion, and the abutment position of the front end surface with respect to the convex lens body is defined. The light-emitting display body according to claim 2, wherein An LED indicator lamp comprising a plurality of light emitting display bodies having LEDs (light emitting diodes) inside a display panel, and a surface panel having a light transmission function as a display unit on the surface of the display panel,
The light-emitting display body includes a convex lens body that focuses an LED and light emitted from the LED at a central portion within a predetermined angle range from a light source, and does not interfere with the central light beam and is out of the predetermined angle range. A prism body that defines a viewing angle for projecting the light in the front direction where the convex lens body is located and emitting and displaying the light,
The convex lens body is integrally molded by projecting into a convex lens shape at a predetermined position facing the LED on one side or both sides of the back panel or the front side of the front panel ,
The prism body is a cylindrical body, and includes a first cylindrical portion that integrally covers the outer surface of the LED, an enlarged diameter portion that extends in a tapered shape from the cylindrical portion, and an outer edge portion of the convex lens body that is connected to the enlarged diameter portion. A cylindrical inner surface portion including a second cylindrical portion covering the first outer peripheral portion, a first outer peripheral portion located at the site of the LED , a first tapered portion that is connected to the first outer peripheral portion, and suddenly increases in diameter; An LED indicator lamp , comprising: a second outer peripheral portion that gradually increases in diameter and a second taper portion that continues to the second outer peripheral portion and reaches the front end surface that contacts the front panel . Protrusion guides are provided around the position where the prism body abuts on the back side of the front panel so as to define the arrangement position of the second taper portion, and the arrangement position of each front end surface with respect to the convex lens body is defined. The LED indicator lamp according to claim 4 , wherein The display panel is mounted on the upper portion of the leg via a support shaft, and the display panel is connected to the belt-shaped outer frame, the central frame portion, the central frame portion, and the belt-shaped outer frame. And a plurality of the light-emitting display bodies are disposed in the belt-like outer frame and the belt-like connecting portion. The LED indicator lamp according to 4 or 5 . An LED display control unit for controlling light emission of the light emitting display body so as to display a predetermined light emission pattern and a memory unit for storing patterned display contents are provided inside the display panel, and the central frame The LED indicator lamp according to any one of claims 4 to 6 , wherein an on / off switch, a lighting pattern switch, and a lighting time zone switch are provided on a rear surface of the unit.

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