JP2008173899A - Image forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus which can suppress the increase in the number of parts, and at the same time, make the luminescent surface shine without unevenness. <P>SOLUTION: This image forming apparatus includes an LED 11 for displaying, and a light guiding member 32. In this case, the LED 11 for displaying emits light for displaying. The light guiding member 32 is arranged in a manner to surround the LED 11 for displaying. At the same time, the light guiding member 32 includes the circumferential luminescent surface, a circumferential light guiding section 32b, and a dome section 32c having a light guiding function. In this case, the circumferential light guiding section 32b guides the light being emitted from the LED 11 for displaying to the luminescent surface 32a. The dome section 32c continues from the light guiding section 32b, and at the same time, is installed in a manner to cover the LED 11 for displaying on the internal side of the circumferential light guiding section 32b. The dome section 32c of the light guiding member 32 has an adjusting hole section 32d which adjusts the light being emitted from the LED 11 for displaying which is guided to the circumferential luminescent surface 32a. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image forming apparatus, and more particularly, to an image forming apparatus including a light emitting element portion that emits display light.

  2. Description of the Related Art Conventionally, switches and buttons (for example, see Patent Documents 1 to 5) each having a light emitting element portion that emits display light, or image forming apparatuses including such switches and buttons are known.

  Patent Document 1 includes a click rubber (switch part) having a light emitting surface and a function as a push button, an LED (light emitting element part), an LED inside, and a position below the click rubber. An illuminated pushbutton switch including a housing that supports a click rubber is disclosed. In the illuminated pushbutton switch described in Patent Document 1, the light emitting surface of the click rubber can be illuminated evenly by arranging the LED at a position facing the center of the click rubber of the housing.

  The above-mentioned Patent Document 2 includes a holding sheet (switch part) that has a light emitting surface and functions as a push button, a light source (light emitting element part), a light source, and a light source. An illuminated switch device including a printed circuit board installed on the lower side is disclosed. In the switch device with illumination described in Patent Document 2, the light source is arranged at a position facing the central portion of the holding sheet, so that the light emitting surface of the holding sheet can be illuminated uniformly.

  Patent Document 3 discloses a push button including a push button (switch unit) having a light emitting surface and a light emitting element. In the push button described in Patent Document 3, the light emitting element is disposed at a position facing the center of the surface on the opposite side of the push surface of the push button, so that the light emitting surface of the push button can be illuminated uniformly.

  In Patent Document 4, an illumination button (switch unit) having a light emitting surface on one surface and a Fresnel prism formed on the other surface for uniformizing light, and a light emitting diode (light emitting element unit) are provided. A button device is disclosed. In the illumination button device described in Patent Document 4, the Fresnel prism is formed concentrically around the center of the illumination button, and the light emitting diode is disposed at a position facing the center of the illumination button. Thus, the light emitting surface of the illumination button can be illuminated uniformly.

  Patent Document 5 discloses a button switch including a light emitting body (light emitting element portion) and a light guide member that has a light emitting surface and guides light emitted from the light emitting body to the light emitting surface. In the button switch described in Patent Document 5, the light guide member is a member made of different materials including a light guide base end portion disposed on the light emitter side and a light guide tip end portion having a light emitting surface and including a light diffusing material. It is constituted by. Further, in this button switch, the light emitted from the light emitter passes through the light guide tip including the light diffusing material, so that the light emitting surface can be illuminated uniformly.

JP 05-307922 A JP 2002-260479 A JP 09-282972 A Japanese Patent Laid-Open No. 05-041134 Japanese Patent Laying-Open No. 2005-084460

  However, in the various switches and buttons described in Patent Documents 1 to 3, the light emitting element portion is arranged at a position facing the central portion of the light emitting surface of the switch portion in order to illuminate the light emitting surface of the switch portion evenly. When the light emitting element portion is disposed at a position shifted from the position facing the central portion of the light emitting surface of the switch portion, there is a problem that it is difficult to light the light emitting surface of the switch portion evenly.

  Further, in the illumination button device described in Patent Document 4, in order to emit light uniformly from the light emitting surface of the illumination button, the Fresnel prism is formed concentrically around the center of the illumination button, and the light emitting diode is disposed in the illumination button. When the light emitting diode is arranged at a position that is opposed to the center of the illumination button and is shifted from the position that is opposed to the center of the illumination button, it is difficult to uniformly illuminate the light emitting surface of the illumination button. There is a point.

  Moreover, in the button switch of the said patent document 5, in order to make a light emitting surface shine uniformly, the light guide member is comprised by the member which consists of a different material of a light guide base end part and a light guide front-end | tip part. There is a problem that the number of parts increases.

  Therefore, when such a switch or button is used in an image forming apparatus, there is a problem that it is difficult to illuminate the light emitting surfaces of the switch and button of the image forming apparatus evenly.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to suppress an increase in the number of parts and to shift the light emitting element portion from the central portion of the light emitting surface. It is an object of the present invention to provide an image forming apparatus capable of making a light emitting surface shine evenly even when arranged at a different position.

Means for Solving the Problems and Effects of the Invention

  An image forming apparatus according to a first aspect of the present invention is an image forming apparatus including a plurality of light emitting element units that emit display light, and is disposed so as to surround the plurality of light emitting element units, and has a circumferential shape. A light emitting surface, a circumferential light guide that guides light emitted from the plurality of light emitting elements to the light emitting surface, and a plurality of light emitting elements that are continuous with the light guide inside the circumferential light guide A light guide member including a dome portion having a light guide function provided so as to cover the light receiving portion, and a receiving portion for infrared communication arranged in the vicinity of the arrangement region of the plurality of light emitting element portions. The dome portion of the light guide member has a hole portion for adjusting light emitted from the plurality of light emitting element portions guided to the circumferential light emitting surface, and the circumferential light emitting surface is a circle when viewed in a plan view. The hole portion of the dome portion has an arc-shaped elongated hole shape formed along the circumferential light emitting surface, and the width of the elongated hole shape of the hole portion is substantially It is uniformly formed, the hole is arranged on the arrangement region side of the plurality of light emitting element units, and the central part of the region where the plurality of light emitting element units are arranged is in plan view with respect to the central part of the dome unit Are arranged at positions on the hole side.

  In the image forming apparatus according to the first aspect, as described above, the light emitting element portion that emits the display light, the light emitting element portion, the circumferential light emitting surface, and the light emitting element portion are disposed so as to surround the light emitting element portion. A circumferential light guide part that guides light emitted from the light emitting surface, and a light guide function provided inside the circumferential light guide part so as to be continuous with the light guide part and to cover the light emitting element part A light guide member including a dome portion, and the dome portion of the light guide member is configured to have a hole for adjusting light emitted from the light emitting element portion guided to the circumferential light emitting surface. Since the light from the light emitting element portion passing through the dome portion can be guided to the circumferential light emitting surface in a state adjusted by the hole portion, the light emitting element portion is positioned from the position facing the central portion of the light emitting surface of the light guide member. Even when it is placed at a shifted position, make the light emitting surface shine evenly It can be. In addition, the light emitting surface can be illuminated evenly only by configuring the dome portion of the light guide member to have a hole for adjusting the light emitted from the light emitting element portion guided to the circumferential light emitting surface. Therefore, unlike the case where the light guide member is composed of two members made of different materials, it is possible to suppress an increase in the number of parts.

  In the image forming apparatus according to the first aspect, the circumferential light emitting surface is formed in a circular shape when viewed in plan, and the hole portion of the dome portion is formed along the circumferential light emitting surface. Since the hole portion can be arranged along the circumferential light emitting surface by having the arc-shaped elongated hole shape, the light from the light emitting element portion passing through the dome portion is easily adjusted. It can be led to a circumferential light emitting surface. In addition, since the width of the long hole shape of the hole portion is substantially uniform, the hole portion can be easily formed into an arc-shaped long hole shape along the circumferential light emitting surface. it can. Further, it further includes a receiving unit for infrared communication arranged in the vicinity of the arrangement region of the light emitting element unit, and a plurality of the light emitting element units are arranged, and a central part of the region in which the plurality of light emitting element units are arranged is planar. As seen, by being arranged at a position on the hole side with respect to the center part of the dome part, the hole part of the dome part can be arranged close to the plurality of light emitting element parts, so that it passes through the dome part. Light from the plurality of light emitting element portions can be easily adjusted by the hole portions.

  An image forming apparatus according to a second aspect of the present invention is disposed so as to surround a light emitting element portion that emits light for display, a circumferential light emitting surface, and the light emitting element portion. A circumferential light guide part that guides light to the light emitting surface, and a dome part having a light guide function provided inside the circumferential light guide part so as to be continuous with the light guide part and to cover the light emitting element part The dome part of the light guide member includes a hole part for adjusting the light emitted from the light emitting element part guided to the circumferential light emitting surface.

  In the image forming apparatus according to the second aspect, as described above, the light emitting element portion that emits the display light, the light emitting element portion that surrounds the light emitting element portion, the circumferential light emitting surface, and the light emitting element portion A circumferential light guide part that guides light emitted from the light emitting surface, and a light guide function provided inside the circumferential light guide part so as to be continuous with the light guide part and to cover the light emitting element part A light guide member including a dome portion, and the dome portion of the light guide member is configured to have a hole for adjusting light emitted from the light emitting element portion guided to the circumferential light emitting surface. Since the light from the light emitting element portion passing through the dome portion can be guided to the circumferential light emitting surface in a state adjusted by the hole portion, the light emitting element portion is positioned from the position facing the central portion of the light emitting surface of the light guide member. Even when it is placed at a shifted position, make the light emitting surface shine evenly It can be. In addition, the light emitting surface can be illuminated evenly only by configuring the dome portion of the light guide member to have a hole for adjusting the light emitted from the light emitting element portion guided to the circumferential light emitting surface. Therefore, unlike the case where the light guide member is composed of two members made of different materials, it is possible to suppress an increase in the number of parts.

  In the image forming apparatus according to the second aspect, preferably, the circumferential light emitting surface is formed in a circumferential shape when seen in a plan view, and the hole portion of the dome portion extends along the circumferential light emitting surface. It has an arc-shaped long hole shape formed in the above manner. If comprised in this way, since a hole part can be arrange | positioned along the circumferential light-emitting surface, the light-emitting surface of a circumferential shape in the state which adjusted the light from the light-emitting element part which passes the inside of a dome part easily Can lead to.

  In this case, preferably, the width of the long hole shape of the hole portion is formed substantially uniformly. If comprised in this way, a hole part can be easily formed in circular arc long hole shape along the circumferential light emission surface.

  The image forming apparatus according to the second aspect preferably further includes a receiving unit for infrared communication arranged in the vicinity of the arrangement region of the light emitting element unit, and the hole is arranged on the arrangement region side of the light emitting element unit. Yes. If comprised in this way, since the hole part of a dome part can be arrange | positioned close to a light emitting element part, the light from the light emitting element part which passes the inside of a dome part can be easily adjusted with a hole part. .

  In the image forming apparatus according to the second aspect, preferably, a plurality of light emitting element portions are arranged, and a central portion of a region where the plurality of light emitting element portions are arranged is located at a central portion of the dome portion when seen in a plan view. On the other hand, it is arranged at a position on the hole side. If comprised in this way, since the hole part of a dome part can be arrange | positioned close to several light emitting element parts, the light from the several light emitting element part which passes the inside of a dome part is easily adjusted with a hole part. can do.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view showing the overall configuration of a sublimation printer according to an embodiment of the present invention. 2 to 11 are views showing details of the sublimation printer according to the embodiment of the present invention shown in FIG. First, the structure of a sublimation printer 1 according to an embodiment of the present invention will be described with reference to FIGS. In the present embodiment, a case where the present invention is applied to a sublimation printer which is an example of an image forming apparatus will be described.

  As shown in FIGS. 1 and 2, the sublimation printer 1 according to the present embodiment is disposed on a housing 10, a printing unit 20 (see FIG. 2) housed in the housing 10, and a housing upper surface 10 a. The power button 30 is provided. A paper cassette 50 that stores paper 40 is detachably mounted on the front surface 10b of the housing 10 in the arrow A direction. In the present embodiment, a mobile phone 60 having a camera function is assumed as a device capable of infrared communication with the sublimation printer 1.

  As shown in FIG. 1, the housing 10 includes a housing back surface 10c in the direction of arrow B, a housing bottom surface 10d, and a direction of arrow C in addition to the housing top surface 10a and the housing front surface 10b in the direction of arrow A described above. Housing side surface 10e and a housing side surface 10f in the direction of arrow D. As shown in FIG. 2, the housing upper surface 10a is formed so as to be inclined with respect to a horizontal plane, and has an opening 10g for attaching the power button 30 to the inclined surface. Further, the housing upper surface 10a is integrally provided with a protrusion (boss portion) 10h for attaching the power button 30 to the inner surface on the front side (arrow A direction side) of the opening 10g. Further, a paper cassette mounting opening 10i for mounting a paper cassette 50 (see FIG. 1) is provided on the front surface 10b of the housing.

  Here, in the present embodiment, as shown in FIGS. 2 and 3, four display LEDs 11 that emit display light are provided above the printing unit 20 inside the housing 10. An infrared receiver 12 capable of receiving an infrared signal is disposed at a position adjacent to the display LED 11. The display LED 11 is an example of the “light emitting element portion” in the present invention. The infrared receiver 12 is an example of the “receiver for infrared communication” in the present invention.

  The infrared receiver 12 is configured to receive an infrared signal from the mobile phone 60 (see FIG. 1) in a range of about 30 degrees (± about 15 degrees). Further, the four display LEDs 11 are arranged on a substrate 13 installed horizontally as shown in FIGS. 2 and 3. Further, on the substrate 13, a switch unit 14 is disposed at a position surrounded by the four display LEDs 11, and electronic components 13 a and 13 b are disposed on the arrow C direction side and the arrow D direction side of the four display LEDs 11, respectively. Has been. Further, as shown in FIG. 2, the infrared receiving unit 12 is disposed on a substrate 15 installed in an upward direction (arrow U direction) about 15 degrees with respect to the horizontal direction. As a result, the infrared receiver 12 capable of receiving infrared signals in a range of about 30 degrees (± about 15 degrees) is ± 15 degrees upward with respect to the upward direction of about 15 degrees when the housing 10 is horizontally installed. Infrared signals can be received within a range of about 15 degrees (a range of about 30 degrees upward from the horizontal plane). In addition, electronic components 15 a, 15 b, and 15 c are installed on the substrate 15 on the rear side (arrow B direction side) of the infrared receiver 12. As shown in FIGS. 2 and 3, the substrate 15 is supported by a substrate table 17 disposed on the pedestal 16. Further, a substrate 13 is installed on the rear side (arrow B direction side) of the upper surface of the pedestal 16 via a leg portion 18 (see FIG. 2).

  As shown in FIG. 2, the printing unit 20 is configured such that the bottom and sides are covered with a metal chassis 21, and an ink sheet cartridge 22 in which an ink sheet 22a is stored can be mounted. The printing unit 20 includes a print head unit 23 for performing printing, a platen roller 24a disposed so as to face the print head unit 23, a metal feed roller 24b, and a feed roller with a predetermined pressing force. Metal pressing roller 24c that presses 24b, rubber paper feed roller 24d, rubber paper discharge roller 24e, resin lower paper guide 25a, resin upper paper guide 25b, and ink sheet An ink sheet cartridge support portion 26 that supports the cartridge 22, a main substrate 27, and a top plate 28 are included.

  The chassis 21 is formed by a bottom surface 21a, one side surface (not shown) on the arrow C direction side in FIG. 1, and the other side surface 21b on the arrow D direction side. In addition, two attachment portions 21c for attaching the main board 27 are formed on the upper end portion of one side surface (not shown) and the upper end portion of the other side surface 21b, respectively. The attachment portion 21c is formed with a screw hole 21d into which a screw 29a for fixing the main board 27 is screwed. The ink sheet cartridge 22 includes a winding unit 22b that winds up the ink sheet 22a and a supply unit 22c that supplies the ink sheet 22a. Further, the winding unit 22b and the supply unit 22c of the ink sheet cartridge 22 each have a winding bobbin 22d and a supply bobbin 22e. The main board 27 is attached to the attachment portion 21 c of the chassis 21 via the top plate 28. Specifically, the main board 27 includes four holes 29 a provided in the main board 27 and four screws 29 a passed through the four holes 28 a provided in the top plate 28. It is fixed by tightening in the hole 21d. Further, the base 16 is attached to the upper surface of the main board 27 with two screws 29b at a position facing the opening 10g provided on the upper surface 10a of the housing. Thus, the four display LEDs 11, the switch unit 14, and the infrared receiving unit 12 are arranged at positions facing the opening 10g.

  As shown in FIGS. 4 and 5, the power button 30 (see FIG. 1) includes an infrared filter member 31, a light guide member 32, and a button support portion 33. As shown in FIG. It is attached to the opening 10g of the housing upper surface 10a. In addition, the infrared filter member 31 has a dome shape and a filter function capable of transmitting infrared rays while blocking visible light.

  Here, in this embodiment, as shown in FIGS. 5 and 6, the light guide member 32 includes a circumferential light emitting surface 32 a and light emitted from the four display LEDs 11. The circular light guide part 32b led to 32a and the circular dome part 32c formed integrally inside the circular light guide part 32b are configured to cover the display LED 11. Is arranged. Further, the dome portion 32c has a light guiding function similarly to the light guiding portion 32b.

  In the present embodiment, as shown in FIGS. 5 and 6, the dome portion 32c of the light guide member 32 is provided with an adjustment hole portion 32d for adjusting the light amount of the display LED 11 guided to the light emitting surface 32a. It has been. The adjustment hole 32d is an example of the “hole” in the present invention.

  As shown in FIGS. 5, 6 and 7, the infrared signal transmitted from the mobile phone 60 (see FIG. 1) is received by the dome portion 32c of the light guide member 32 through the dome portion 32c. A passage hole portion 32e is provided for the portion 12 to receive.

  Here, in this embodiment, as shown in FIGS. 6 and 7, when the light guide member 32 is viewed from above, the adjustment hole portion 32 d of the dome portion 32 c extends along the light emitting surface 32 a of the light guide member 32. In this way, it is formed in an arc-shaped long hole shape. Specifically, the dome portion 32c (light guide member 32) is formed in a circular shape centering on a center point (center portion) X where the center line X1 and the center line X2 intersect, and the adjustment hole portion. 32d is also formed in the shape of a long hole in a circular arc shape so as to have a predetermined angle α of less than 180 degrees with the same center point (center portion) X as the light guide member 32 as the center.

  In the present embodiment, as shown in FIG. 7, the width W of the elongated hole-shaped adjustment hole 32 d of the light guide member 32 is formed substantially uniformly. The length L1 of the adjustment hole 32d in the arrow C direction and the arrow D direction is configured to be larger than the length L2 of the passage hole 32e in the arrow C direction and the arrow D direction.

  Moreover, in this embodiment, as shown in FIG. 6, the adjustment hole 32d of the light guide member 32 is arranged so as to be positioned on the display LED 11 side (arrow B direction side) with respect to the center line X1. Yes. The adjustment hole 32d is configured to adjust the light of the display LED 11 by adjusting the arc-shaped angle α and the width W of the adjustment hole 32d.

  Further, in the present embodiment, as shown in FIG. 6, the four display LEDs 11 are disposed two by two on the arrow C direction side and the arrow D direction side of the switch unit 14, and the center part of the four LEDs is a switch. The center point (center part) Y of the switch part 14 consisting of the center line Y1 and the center line X2 is arranged on the adjustment hole part 32d side with respect to the center point X of the dome part 32c. Is arranged. That is, the central part of the four display LEDs 11 and the switch part 14 are arranged closer to the adjustment hole part 32d than the central position (center point X) of the dome part 32c.

  Further, as shown in FIGS. 8 and 9, the light guide member 32 has β with respect to the horizontal plane such that the front side (arrow A direction side in FIG. 2) is lowered along the inclination of the housing upper surface 10 a. Inclined at an angle.

  In addition, as shown in FIG. 10, the light emitting surface 32a and the light guide portion 32b of the light guide member 32 are subjected to a textured process that forms a fine uneven shape for diffusing light, thereby emitting light in a diffused state. Thus, the light emitting surface 32a can be uniformly illuminated.

  Further, as shown in FIG. 8, the dome portion 32c has a switch pressing portion 32f for pressing the switch portion 14 (see FIG. 3) when the power button 30 (see FIG. 1) is pressed. It is provided at a position facing the portion 14. In addition, the outer surface 32g of the dome portion 32c has a function of reflecting light in order to prevent light emitted from the display LED 11 and entering the inside of the dome portion 32c from being emitted from the outer surface 32g. A reflective layer 34 made of white paint is formed. An infrared filter member 31 is attached to the outer surface 32g of the dome portion 32c where the reflective layer 34 is formed by a double-sided tape (not shown).

  Further, as shown in FIGS. 5, 8, and 11, the button support portion 33 has an attachment portion 33a for attachment to the projection portion 10h of the housing upper surface 10a and an inner side so as to contact the outer peripheral side surface of the light guide portion 32b. It is comprised by the ring part 33c in which the surrounding surface 33b is formed, and the arm part 33d which connects the attaching part 33a and the ring part 33c. The attachment portion 33a has an insertion hole 33e that can be inserted (press-fitted) into the protrusion 10h. Further, the mounting portion 33a is configured such that the projection 10h is lightly press-fitted into the insertion hole 33e so that the upper portion is attached to the housing upper surface 10a and the lower surface is in contact with the upper surface of the top plate 28. The mounting portion 33a of the button support portion 33 is fixed. The ring 33c has an L-shaped receiving portion 33f that prevents the light guide member 32 from falling off at the lower portion of the inner peripheral surface 33b. As shown in FIG. 5, the light guide member 32 to which the infrared filter member 31 is attached is inserted into the ring portion 33c in the direction of arrow E, and the power button 30 is assembled. The arm portion 33d has one end fixed to the upper end of the attachment portion 33a and the other end fixed to the lower surface of the ring portion 33c. That is, the assembled power button 30 is supported by the arm portion 33d extending from the fixed mounting portion 33a. Specifically, as shown in FIG. 8, the power button 30 to which the mounting portion 33a of the button support portion 33 is fixed has the arm portion 33d attached to the arm portion 33d with respect to the pressing force P in the arrow E direction. It is supported so as to be movable in the pressing direction (arrow E direction) by bending with one end on the side of the portion 33a as a fulcrum. Thus, when the power button 30 is pressed in the direction of arrow E, the arm portion 33d bends with the one end portion on the attachment portion 33a side as a fulcrum, so the switch pressing portion 32f provided on the light guide member 32 is The switch part 14 is pressed by moving in the pressing direction. Further, when the pressing force P is released, the arm portion 33d that has been bent and deformed is moved upward by the upward biasing force, and the power button 30 is returned to the original position.

  12 and 13 are a cross-sectional view and a plan view for explaining a passage path of light emitted from the display LED of the sublimation printer according to the embodiment of the present invention. Next, with reference to FIG. 6, FIG. 7, FIG. 12, and FIG. 13, the passage route of the light emitted from the display LED 11 of the sublimation printer 1 according to the embodiment of the present invention will be described.

  As shown in FIGS. 12 and 13, the light emitted from the display LED 11 is applied to the inner surface of the dome portion 32 c of the light guide member 32 and the inner peripheral side surface of the light guide portion 32 b. The light that is irradiated on the inner surface of the dome portion 32c and is incident on the inside of the dome portion 32c is reflected by the reflective layer 34 on the outer surface 32g. The reflected light reaches the light emitting surface 32a through the inside of the dome portion 32c while being repeatedly reflected by the inner surface and the outer surface 32g. Further, the light that is irradiated on the inner peripheral side surface of the light guide unit 32b and enters the light guide unit 32b is repeatedly reflected on the lower surface, the outer peripheral side surface, and the inner peripheral side surface of the light guide unit 32b. It reaches the light emitting surface 32a through the inside.

  Here, as described above, the center portions of the four display LEDs 11 are arranged on the adjustment hole portion 32d side (arrow B direction side) with respect to the center line X1 (see FIG. 6) of the light guide member 32. Therefore, the light emitted from the display LED 11 is likely to reach the adjustment hole 32d side (arrow B direction side) of the dome portion 32c. On the other hand, since the infrared receiver 12 is disposed on the opposite side (arrow A direction side) to the adjustment hole 32d with respect to the center line X1 (see FIG. 6) of the light guide member 32, the infrared receiver 12 Becomes an obstacle to the light path, and the light emitted from the display LED 11 is unlikely to reach the portion of the dome portion 32c opposite to the adjustment hole portion 32d (arrow A direction side). That is, the portion on the arrow B direction side of the dome portion 32c is more easily reached than the portion on the arrow A direction side, so the portion on the arrow B direction side of the circumferential light emitting surface 32a is on the arrow A direction side. It becomes brighter and easier to shine than the part of.

  Further, since a passage hole 32e is formed in the portion on the arrow A direction side of the dome portion 32c, the light passing through the inside of the dome portion 32c toward the passage hole 32e reaches the passage hole 32e. In this case, the light is emitted from the dome portion 32c and hardly reaches the light guide portion 32d and the light emitting surface 32a. For this reason, the portion on the arrow A direction side of the circumferential light emitting surface 32a tends to be dark.

  Here, in this embodiment, since the adjustment hole 32d is formed in the portion on the arrow B direction side of the dome part 32c, the light passing through the inside of the dome part 32c toward the adjustment hole 32d When reaching the adjustment hole 32d, the light is emitted from the dome 32c and hardly reaches the light guide 32b and the light emitting surface 32a. Furthermore, in the present embodiment, the length L1 (see FIG. 7) of the adjustment hole 32d in the arrow C direction and the arrow D direction is configured to be larger than L2 (see FIG. 7), and the dome portion 32c. The light passing through the arrow B direction side and reaching the light guide portion 32b and the light emitting surface 32a is comparable to the light passing through the arrow A direction side of the dome portion 32c and reaching the light guide portion 32b and the light emitting surface 32a. It becomes the brightness. That is, in the present embodiment, the light passing through the dome portion 32c is guided to the light emitting surface 32a in a state where the light passing through the dome portion 32c is adjusted by the adjustment hole portion 32d, so that the light emitting surface 32a shines evenly.

  In the present embodiment, as described above, the display LED 11 that emits the display light, and the light emitted from the circumferential light emitting surface 32a and the display LED 11 are arranged so as to surround the display LED 11. A circumferential light guide 32b that guides the light to the light emitting surface 32a, and a light guide function provided inside the circumferential light guide 32b so as to be continuous with the light guide 32b and to cover the display LED 11. A light guide member 32 including a dome portion 32c. The dome portion 32c of the light guide member 32 has an adjustment hole portion 32d for adjusting light emitted from the display LED 11 guided to the circumferential light emitting surface 32a. By configuring as described above, the light from the display LED 11 passing through the dome portion 32c can be guided to the circumferential light emitting surface 32a in a state adjusted by the adjustment hole portion 32d. 11 even when disposed in a position displaced from a position facing the center of the light emitting surface 32a of the light guide member 32 can be brightened the emitting surface 32a uniformly. Further, the light emitting surface is made uneven only by configuring the dome portion 32c of the light guide member 32 to have the adjustment hole portion 32d for adjusting the light emitted from the display LED 11 guided to the circumferential light emitting surface 32c. Since it can be made to shine, it can suppress that the number of parts increases unlike the case where the light guide member 32 is comprised with two members which consist of a different material.

  Further, in the present embodiment, the circumferential light emitting surface 32a is formed in a circumferential shape when seen in a plan view, and the adjustment hole 32d of the dome portion 32c is predetermined along the circumferential light emitting surface 32a. Since the adjustment hole portion 32d can be disposed along the circumferential light emitting surface 32a by passing through the dome portion 32c by having the arc-shaped elongated hole shape formed so as to have an angle α of Light from the display LED 11 can be easily adjusted to the circumferential light emitting surface 32a. Further, by adjusting the angle α of the adjustment hole portion 32d, the light from the display LED 11 passing through the dome portion 32c can be easily adjusted by the adjustment hole portion 32d.

  In the present embodiment, the width W of the elongated hole shape of the adjustment hole portion 32d is substantially uniform, so that the adjustment hole portion 32d can be easily formed along the circumferential light emitting surface 32a. It can be formed in an arc-shaped long hole shape. In addition, the width W of the elongated hole shape of the adjustment hole portion 32d can be adjusted more easily by adjusting the length of the width W so that the light from the display LED 11 passing through the dome portion 32c can be more easily transmitted through the adjustment hole portion 32d. Can be adjusted.

  Moreover, in this embodiment, the infrared receiving part 12 arrange | positioned near the arrangement | positioning area | region of LED11 for a display is further provided, and adjustment hole part 32d is arrange | positioned at the arrangement | positioning area | region side of LED11 for a display, Therefore Dome part 32c Since the adjustment hole 32d can be disposed close to the display LED 11, the light from the display LED 11 passing through the dome 32c can be adjusted more easily by the adjustment hole 32d.

  Further, in the present embodiment, the central portion of the region where the four display LEDs 11 are disposed is disposed at a position on the adjustment hole portion 32d side with respect to the central portion of the dome portion 32c as seen in a plan view. Thus, the adjustment hole portion 32d of the dome portion 32c can be disposed close to the four display LEDs 11, so that the light from the four display LEDs 11 passing through the dome portion 32c is further transmitted by the adjustment hole portion 32d. It can be adjusted easily.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiment but by the scope of claims for patent, and includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above-described embodiment, an example in which the present invention is applied to a sublimation printer as an example of an image forming apparatus has been described. However, the present invention is not limited thereto, and a light-emitting element unit that emits display light is provided. Any image forming apparatus can be applied to other image forming apparatuses other than the sublimation printer.

  Moreover, in the said embodiment, although the example which forms the hole part of a dome part in circular arc-shaped long hole shape was shown, this invention is not limited to this, Even if it forms in shapes other than circular arc-shaped long hole shape Good.

  Moreover, in the said embodiment, although the LED for display was arrange | positioned at the adjustment hole part side with respect to the center point X of the circumferential light guide member, this invention is not limited to this, LED for display May be arranged so as to be located at the center point of the light guide member.

  In the above embodiment, a mobile phone is shown as a device capable of infrared communication. However, the present invention is not limited to this, and any device other than a mobile phone may be used as long as it is a device capable of infrared communication. Good.

1 is a perspective view illustrating an overall configuration of a sublimation printer according to an embodiment of the present invention. It is sectional drawing of the sublimation type printer by one Embodiment of this invention shown in FIG. FIG. 2 is a plan view showing the periphery of display LEDs of the sublimation printer according to the embodiment of the present invention shown in FIG. 1. FIG. 2 is a perspective view showing the vicinity of a power button of the sublimation printer according to the embodiment of the present invention shown in FIG. 1. FIG. 2 is an exploded perspective view showing a configuration around a power button of the sublimation printer according to the embodiment of the present invention shown in FIG. 1. FIG. 2 is a plan view showing the vicinity of a power button of the sublimation printer according to the embodiment of the present invention shown in FIG. 1. It is a top view which shows the light guide member of the sublimation type printer by one Embodiment of this invention shown in FIG. FIG. 2 is a cross-sectional view illustrating the vicinity of a power button of the sublimation printer according to the embodiment of the present invention illustrated in FIG. 1. It is a side view which shows the light guide member of the sublimation type printer by one Embodiment of this invention shown in FIG. It is an expanded sectional view which shows the fine uneven | corrugated shape of the light guide part of the sublimation type printer by one Embodiment of this invention shown in FIG. It is a top view which shows the button support part of the sublimation type printer by one Embodiment of this invention shown in FIG. It is sectional drawing for demonstrating the passage route of the light radiate | emitted from LED for display of the sublimation type printer by one Embodiment of this invention shown in FIG. It is a top view for demonstrating the passage route of the light radiate | emitted from LED for display of the sublimation type printer by one Embodiment of this invention shown in FIG.

Explanation of symbols

1 Sublimation printer (image forming device)
11 LED for display (light emitting element part)
12 Infrared receiver (receiver for infrared communication)
32 Light guide member 32a Light emitting surface 32b Light guide portion 32c Dome portion 32d Adjustment hole (hole)

Claims (6)

In an image forming apparatus including a plurality of light emitting element units that emit display light,
A circumferential light emitting surface, a circumferential light guide that guides light emitted from the plurality of light emitting element portions to the light emitting surface, and the circumferential shape. A light guide member that includes a dome portion having a light guide function provided so as to cover the plurality of light emitting element portions while being continuous with the light guide portion inside the light guide portion.
A receiving unit for infrared communication arranged in the vicinity of the arrangement region of the plurality of light emitting element units,
The dome portion of the light guide member has a hole for adjusting light emitted from the plurality of light emitting element portions guided to the circumferential light emitting surface,
The circumferential light emitting surface is formed in a circumferential shape when seen in a plan view,
The hole portion of the dome portion has an arc-shaped elongated hole shape formed along the circumferential light emitting surface,
The width of the elongated hole shape of the hole is formed substantially uniformly,
The image forming apparatus, wherein a central portion of a region where the plurality of light emitting element portions are disposed is disposed at a position on the hole portion side with respect to the central portion of the dome portion in a plan view. A light emitting element for emitting light for display;
A circumferential light emitting surface, a circumferential light guide that guides the light emitted from the light emitting device to the light emitting surface, and the circumferential light guide. And a light guide member including a dome part having a light guide function provided so as to cover the light emitting element part while being continuous with the light guide part,
The image forming apparatus, wherein the dome portion of the light guide member has a hole for adjusting light emitted from the light emitting element portion guided to the circumferential light emitting surface. The circumferential light emitting surface is formed in a circumferential shape when seen in a plan view,
The image forming apparatus according to claim 2, wherein the hole portion of the dome portion has an arc-shaped long hole shape formed along the circumferential light emitting surface.   The image forming apparatus according to claim 3, wherein a width of the long hole shape of the hole portion is substantially uniform. It further includes a receiving unit for infrared communication arranged in the vicinity of the arrangement region of the light emitting element unit,
5. The image forming apparatus according to claim 2, wherein the hole portion is disposed on an arrangement region side of the light emitting element portion.   A plurality of the light emitting element portions are arranged, and a central portion of a region where the plurality of light emitting element portions are arranged is arranged at a position on the hole side with respect to the central portion of the dome portion when seen in a plan view. The image forming apparatus according to any one of claims 2 to 5.

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