JP2007032045A - Door panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve design while reducing manufacturing cost of a door panel of a heat insulating structure having a natural lighting part. <P>SOLUTION: This door panel has the heat insulating structure of sandwiching a heat insulating panel 3 between inside-outside surface materials 1 and 2. Mutually communicating through-openings 1c, 2c and 31 are respectively formed in the surface materials 1 and 2 and the heat insulating panel 3. When sticking the surface materials 1 and 2 and the heat insulating panel 3, a light transmissive plate 4 passing the light is arranged between the surface materials 1 and 2 and the heat insulating panel 3 so as to block up the through-openings 1c, 2c and 31. A recessed part 32 storing the light transmissive plate 4 is also formed in the heat insulating panel 3. A drawing process is applied to the through-openings of the surface materials 1 and 2, and peripheral parts 1d and 2d projecting to the reverse side by the drawing process, are inserted into a groove 41 formed on the light transmissive plate 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a door panel used for various doors such as a front door, and more particularly to a door panel capable of collecting light outside the door to the inside of the door.

2. Description of the Related Art Conventionally, entrance doors that use a door panel having a heat insulating structure in which a heat insulating material is sandwiched between two surface materials constituting an outer surface and an inner surface are known. There is also known a door panel in which an opening is provided in the door panel, a frosted glass (a normal glass plate or a double glass plate having high heat insulation) is fitted into the opening, and outside light is collected inside.
For example, a double glass plate is fitted between the inner frame and the outer frame by fitting the outer frame from the outside of the opening of the door body having a heat insulating structure, fitting the double glass plate from the inside and fitting the inner frame. There has been proposed a structure in which the outer frame and the inner frame are fixed to the door body in a state of sandwiching the frame (see, for example, Patent Document 1).

Also, a frame is used in substantially the same manner as in the above example, acrylic is used instead of glass as a transparent member (semi-transparent member), and a crosspiece is provided in the frame portion to shield across the opening in the frame. It has been proposed that one opening is divided into a plurality of parts (for example, see Patent Document 2).
Further, the outer frame, a front plate disposed on the front and back surfaces, and a back plate are provided, and the laminated glass plate is configured to be held by a locking member of the inner frame portion disposed on the inner side of the outer frame. It has been proposed that the outer frame, the front plate, and the back plate that hold the glass plate are stacked and bonded together, and the door is manufactured by holding the glass plate at a predetermined temperature while applying pressure to cure the adhesive (for example, patents). Reference 2).

In addition, as described above, the double glass plate is held using the frame, and the inner frame is configured to sequentially expand from the double glass plate side toward the indoor side, and the light that has been collected and incident on the indoor side is wide. It has been proposed to have a structure that illuminates the range (see, for example, Patent Document 3).
JP-A-7-217324 Japanese Patent No. 2945509 Japanese Patent Laid-Open No. 10-184210

By the way, in the door panel which has the conventional lighting part, in order to hold | maintain a glass plate as a transparent or semi-transparent member, an internal and external frame is used, or another attachment member is used. That is, many parts are used to fix the glass plate to the door panel, and many operations are required to attach the glass plate. For these reasons, it has been expensive to manufacture a door panel having a daylighting unit using a transparent or translucent member such as a glass plate.
In addition, in the conventional door panel, once the design such as the shape of the daylighting part is decided, it is difficult to change the design, and not only the surface material of the glass plate and door panel, but also the mounting member of the glass plate is changed. It is necessary to do this, and design changes will also be costly.

  The present invention has been made in view of the above circumstances, and can be manufactured very easily, in particular, a light transmitting plate for daylighting can be easily attached, and the shape of the daylighting unit, An object is to provide a door panel whose number, arrangement, etc. can be changed.

  In order to achieve the object, the door panel according to claim 1 includes an outer surface material, an inner surface material, and a heat insulating panel arranged between the outer and inner surface materials. A through-opening is formed so as to communicate with the inner surface material and the heat insulating panel, and a light-transmitting light transmitting plate closes the through-opening between each of the heat insulating panel and the outer inner surface material. The heat insulation is disposed between the outer inner surface material and the outer inner surface material, and a recess is formed around the through opening on the front and rear surfaces of the heat insulating panel. A panel is bonded to the through-opening portion with the light-transmitting plate sandwiched therebetween.

In the first aspect of the present invention, a daylighting portion capable of collecting light from the outside is formed by the through-opening and the transparent member. Since it is fixed between the heat insulating panel and the inner surface material and the heat insulating panel, it does not require a member for mounting to fix the translucent plate, and in the door panel having a daylighting unit, The number of parts can be reduced, and the number of processes for manufacturing can be reduced. Therefore, a door panel having a daylighting section and a heat insulating structure and suitable for a front door can be manufactured at low cost.
In addition, the design can be easily changed simply by changing the shape, number and arrangement of the through-openings and changing the arrangement of the light-transmitting plates having a size corresponding to the through-openings. That is, in the present invention, since there is no mounting member for the translucent plate, even when changing the shape, arrangement, or number of holes when drilling holes in the outer surface material or the heat insulating panel, the position of the hole is maintained. Correspondingly, it is possible to cope by simply arranging the translucent plate, and it is not necessary to change the mounting member of the translucent plate, and the design can be easily changed.

In consideration of the ease of design change, the strength of the daylighting portion, and the like, the diameter of the through opening is preferably a small one such as 1/20 or less of the area of the door panel. This makes it possible to easily change the design easily with the number and arrangement of the through openings. Moreover, a door panel with a novel design can be manufactured by arranging a large number of small through openings.
Moreover, it is preferable that the translucent plate is bonded and fixed to the back surface of the surface material together with the heat insulating panel. Thereby, the through-opening of a surface material can be made into the state completely obstruct | occluded with the translucent board, and watertightness can be provided.

  The door panel according to claim 2 is the invention according to claim 1, wherein the heat insulation panel is divided into a plurality of divided bodies, and the divided body in which the through openings are formed serves as a through opening of the outer surface material. They are arranged at corresponding positions.

In the invention according to claim 2, when changing the design, particularly when changing the arrangement of the through openings, it is not necessary to create a heat insulation panel having different arrangement of the through openings, and the plurality of divided bodies are used. In the heat insulation panel, by changing the position of the divided body in which the through openings are formed, the arrangement of the through openings can be changed, and the design can be changed more easily.
Further, by changing the number of divided bodies in which the through openings are formed, it is possible to easily cope with a design change due to a change in the number of through openings. Moreover, although the division body in which the through-opening of another shape was formed is needed, the change of the shape of a through-opening becomes easy by using the division body which has a through-opening of a different shape.

  The door panel according to claim 3 is a drawing process according to claim 1 or claim 2, wherein the outer peripheral surface material has a through-opening portion projecting a peripheral portion of the surface material through-opening to the back side. And a groove into which the peripheral portion is inserted is formed along the peripheral portion protruding to the back side of the surface material on the surface facing the surface material outside or inside the translucent plate. And

In the invention according to claim 3, since the peripheral portion of the through-opening enters the groove of the translucent plate in the through-opening portion of the outer and inner surface material, the translucent plate mounting member is used. Even if not, the inner peripheral surface of the through-opening of the surface member cannot be seen, and the drawn peripheral edge portion of the peripheral portion is not visible by entering the groove, which is excellent in terms of design.
In addition, it becomes a novel design for the case where a picture frame is used for attaching a translucent plate, and when a seal material is used for fixing a glass plate, the seal material is not visible, and more Excellent design. That is, a novel design can be formed in a door panel that has a very simple structure and can be manufactured at low cost.

  In addition, when the surface material is a metal plate, the fore edge portion when drilling is further drawn, and the tip of the peripheral portion formed by drawing is in the groove formed on the translucent plate. Since it enters, cannot be seen, and cannot be touched, it is not necessary to chamfer or polish the holed portion.

  Moreover, when attaching a translucent plate to the back side of the surface material, the translucent plate is easily positioned with respect to the surface material by aligning the peripheral portion protruding to the back side of the surface material and the groove of the translucent plate. be able to. That is, positioning can be performed. Moreover, the shift | offset | difference to the surface direction of the surface material of a translucent board can be prevented because it will be in the state which the surrounding part of the surface material fitted in the groove | channel of the translucent board.

  According to the door panel of the present invention, a simple structure that has a heat insulating structure and is optimal for a front door having a daylighting section, and that can be easily manufactured with a novel and diverse design that has never been seen before. And such a door panel can be provided at low cost.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1-6 is a figure which shows the door panel which concerns on embodiment of this invention, Comprising: FIG. 1 is a front view, FIG. 2 is a rear view, FIG. 3 is a cross section, FIG. FIG. 5 is an enlarged cross-sectional view of a main part, and FIG. 6 is a perspective view showing a door panel manufacturing process.
As shown in these drawings, the door panel of this embodiment is a door panel for an entrance door, and is arranged between an outer surface material 1, an inner surface material 2, and these outer and inner surface materials 1, 2. The heat insulation panel 3 and the translucent plate 4 are provided.

  The outer surface material 1 is a member constituting an outer surface that is an outer side with respect to a portion (for example, a house or a room) where a door is provided, and the inner surface material 2 is an inner side with respect to a portion where the door is provided. It is the member which comprises the inner surface which becomes. In this embodiment, the outer surface material 1 and the inner surface material 2 are opposite to each other, but have substantially the same shape. The inner and outer surface materials 1, 2 are made of steel plates. In addition, as a steel plate, the hot dip plated steel plate etc. with high corrosion resistance are used, for example.

The outer and inner surface materials 1 and 2 are formed in a rectangular shape in which the plate bodies 1a and 2a constituting the outer surface or the inner surface described above are vertically long, and among the four sides constituting the periphery of the plate bodies 1a and 2a As shown in FIG. 6, folding sides 1b and 2b in a state where the plates 1a and 2a are folded at right angles toward the back side are provided on the sides excluding the long side serving as the open end of the door. In addition, the height of the folding sides 1b and 2b is about half of the thickness of the door panel.
The surface materials 1 and 2 have a plurality of through openings 1c and 2c formed in the plate bodies 1a and 2a. In this example, nine pairs of through-openings 1c and 2c are provided in the vertical direction at the center in the left-right direction of the surface materials 1 and 2 to form a pair of two side-by-side openings. The arrangement positions and the numbers of the through-openings 1c and 2c are design problems and are not limited to the arrangement shown in the figure, and can be various arrangements.

The shape of each through opening 1c, 2c is a circle, and the diameter is, for example, 10-60 mm, and in this example, 50 mm. The shapes and diameters of the through openings 1c and 2c are also a problem in design, and the shape is not limited to a circle, and may be a polygonal shape such as a triangle or a square, or a curve other than a circle is used. The shape may be an ellipse or a water droplet, or any shape that can be formed as a hole.
Further, the size of the through openings 1c and 2c is not limited to the above-mentioned diameter, but by setting the range of the diameter as described above, it is possible to ensure the diversity of the design and the strength of the door. Thus, the range of the exposed surface of the acrylic plate used as the translucent plate 4 is limited to prevent generation of scratches on the acrylic plate surface. Moreover, by setting it as the range of the above-mentioned diameter, the drilling process and drawing process with the below-mentioned saucepan processing machine can be enabled.

Further, as shown in FIG. 5, the through openings 1c and 2c are drawn, and the peripheral portions 1d and 2d of the through openings 1c and 2c of the plate bodies 1a and 2a of the surface materials 1 and 2 are penetrated. It protrudes to the back side along the periphery of the openings 1c and 2c.
For example, a turret punch press (sallet pan) processing machine is used for the drilling and drawing of the through openings 1c and 2c subjected to the drawing. By using the saucer processing machine, it is possible to form the through holes 1c and 2c having the same shape in an arbitrary number and in an arbitrary arrangement. That is, if there are molds with through-openings 1c and 2c, the arrangement and number of through-openings 1c and 2c can be easily changed, and even one type of mold can have various designs. Two or more molds may be used. Further, the through-opening 1c of the outer surface material 1 and the through-opening 2c of the inner surface material 2 are bonded to the outer surface material 1 and the inner surface material 2 as the outer and inner surfaces of the door panel. In this state, they are arranged at positions where they overlap completely in the front-rear direction, and communicate with each other including a through-opening 31 of the heat insulation panel 3 described later.
That is, the through openings 1c, 2c, and 31 are formed so as to communicate with the outer surface materials 1 and 2 and the heat insulating panel 3, respectively.

  The outer surface material 1, the inner surface material 2, and the through openings 1 c, 2 c, 31 of the heat insulating panel 3 may have different shapes as long as they communicate with each other. It is good also as a different design by changing the shape of the through-openings 1c and 2c with the surface material. As shown in FIGS. 1 and 2, the door panel is provided with, for example, two upper and lower locks 6 and 6, a push-pull handle 7 provided between these locks 6 and 6, and a hinge 8. ing.

The heat insulating panel 3 is disposed between the outer and inner surface materials 1 and 2, and the outer surface material 1 is bonded to the front surface thereof, and the inner surface material 2 is bonded to the rear surface thereof. . In addition, the front and back of the heat insulation panel have substantially the same shape. Moreover, the heat insulation panel 3 consists of foamed polystyrene etc., for example.
Moreover, the heat insulation panel 3 consists of several division body 3a, 3b, 3c, as shown in FIG. And in the divided bodies 3a, 3b, 3c, the divided body 3a in which the through-openings 31 corresponding to the through-openings 1c, 2c of the surface materials 1, 2 are formed, and the two left and right side edges of the door respectively. The divisions 3b and 3b, and the divisions 3a arranged side by side vertically, above the uppermost division 3a and below the lowermost division 3a, and function as spacers There is a body 3c. That is, the heat insulation panel 3 is divided into a plurality (a plurality of types) of divided bodies 3a, 3b, and 3c, and the divided body 3a in which the through openings 31 are formed is the through openings 1c and 2c of the outer surface materials 1 and 2. It is arranged at a position corresponding to.
Thereby, for example, by changing the number and position of the divided bodies 3a having the through openings 31 and further changing the divided bodies 3c functioning as spacers, the interval and the number of the upper and lower arrangements of the paired through openings 31 are changed. Can be easily changed. In addition, it is good also as a structure which can replace the position of each division body 3a, 3b, 3c freely by making the external shape of main division bodies 3a, 3b, 3c into the same shape.

  In addition, a recess 32 that can accommodate the translucent plate 4 is formed around the through opening 31 of the divided body 3 a of the heat insulating panel 3 in which the through opening 31 is formed. The concave portion 32 has a shape corresponding to the shape of the translucent plate 4 when viewed from the front, and is formed in a rectangular shape here. Further, the depth of the concave portion 32 corresponds to the thickness of the translucent plate 4. That is, the recessed part 32 which accommodates the said translucent board in the circumference | surroundings of the through-opening 31 of the front and back of the heat insulation panel 3 is formed.

The translucent plate 4 is made of, for example, an acrylic resin, and uses, for example, a cast plate that has been matted. However, an extruded plate may be used, or a mat that is not matted may be used. good.
The translucent plate 4 may basically be any material that transmits light, and may use a transparent resin other than acrylic resin or glass. In the present invention, since it is difficult to replace the translucent plate 4, an acrylic plate that has excellent impact resistance and is difficult to crack is used.
The translucent plate 4 may be transparent or translucent, colorless, or colored such as white, green, blue, red, yellow.

  The translucent plate 4 is disposed between the outer surface materials 1 and 2 and the heat insulating panel 3, and has the through openings 1 c and 2 c of the surface materials 1 and 2 and the through opening 31 of the heat insulating panel 3. Arranged to close. That is, on one surface side of the heat insulating panel 3, the translucent plate 4 closes the through opening 31 and the through opening 1 c of the outer surface material 1, and on the other surface side of the heat insulating panel 3, The translucent plate 4 closes the through opening 2c of the surface material 2.

Therefore, the translucent plate 4 has a larger area than the through openings 1c and 2c and the through opening 31, and has a shape that completely covers the through openings 1c and 2c and the through opening 31. Here, the through-openings 1c, 2c and the through-opening 31 are circular with the same diameter and are arranged so as to overlap each other almost completely. It has a long rectangular shape.
From the above, the translucent plate 4 that transmits light is disposed so as to close the through openings 1c, 2c, and 31 between the heat insulating panel 3 and the outer and inner surface materials 1 and 2, respectively.

  3 and 4, a single translucent plate 4 covers two adjacent through openings 1 c, 2 c, and 31 that are paired as described above. However, as shown in FIG. It is good also as a structure which covers the through-opening 1c, 2c, and 31 of a translucent board. That is, when the plurality of through-openings 1c, 2c, 31 are formed close to each other, the plurality of through-openings 1c, 2c, 31 may be closed with one translucent plate 4, respectively. The through openings 1c, 2c, and 31 may be closed by different light-transmitting plates 4.

  The translucent plate 4 is attached to the back surfaces of the surface materials 1 and 2 by adhesion, but the back surface of the through-openings 1c and 2c of the surface materials 1 and 2 has a peripheral portion by drawing. 1d and 2d protrude. Correspondingly, a groove 41 having a shape corresponding to the peripheral portions 1d and 2d is formed in the translucent plate 4. That is, the peripheral portions 1d and 2d are inserted along the peripheral portions 1d and 2d protruding on the back side of the surface materials 1 and 2 on the surface facing the surface materials 1 and 2 outside or inside the translucent plate 4. A groove 41 is formed.

  In this example, a groove 41 is formed on the surface of the translucent plate 4 facing the surface materials 1 and 2 corresponding to the annular peripheral portions 1d and 2d as shown in FIG. Further, the width of the groove 41 is wider than the thickness of the peripheral portions 1d and 2d so that the peripheral portions 1d and 2d can be inserted, so that some shape errors can be absorbed. In practice, the width of the groove 41 is several times as large as the thickness of the peripheral portions 1d and 2d. However, the peripheral portions 1d and 2d are disposed more than the inner periphery of the groove 41, so that the groove 41 The outer peripheral side of 41 is covered with the surface materials 1 and 2, and the exposed portions of the surface material 1 and 2 of the groove 41 from the through openings 1c and 2c are slight.

And in the state which bonded the translucent board 4 to the position of the through-openings 1c and 2c of the back surface side of the surface materials 1 and 2, it exposes from the surface of the surface materials 1 and 2 and the through-openings 1c and 2c of the translucent board 4. The position of the surface is shifted by the thickness of the surface materials 1 and 2, and a slight level difference is generated at the outer peripheral portion of the through openings 1 c and 2 c. However, since this is a slight step, the appearance is almost flush with no step. In addition, the peripheral portions 1d and 2d of the surface materials 1 and 2 enter the groove 41 of the translucent plate 4 so that the inner peripheral edges of the through openings 1c and 2c of the surface materials 1 and 2 are hidden. In particular, a novel design in which the parting part (the outer peripheral edge of the through openings 1c and 2c) between the surface materials 1 and 2 and the translucent plate 4 can be formed without using a member such as a frame.
Further, when the peripheral portions 1d and 2d of the surface materials 1 and 2 enter the groove 41 of the translucent plate 4, the tip portions of the peripheral portions 1d and 2d do not touch other parts, and when the hole is processed. There is no need to chamfer or polish the front end portions of the surrounding portions 1d and 2d that become cut edges, and the cost can be reduced.

  In addition, since the translucent plate 4 is bonded to a portion surrounding the through openings 1c and 2c outside the through openings 1c and 2c on the back surfaces of the surface materials 1 and 2, the translucent plate 4 is made of the surface material 1. , 2 through-opening 1c, 2c is closed in a watertight manner, and rainwater enters the door panel from the through-opening 1c of the outer surface material 1 even if wind and rain may blow on the door panel during a typhoon or the like. And prevents rainwater from passing through the through-openings 1c, 2c and 31 communicating with the outer surface material 1, the heat insulating panel 3, and the inner surface material 2, and preventing rainwater from entering the inside from the outside of the door. it can.

  As described above, the outer surface materials 1, 2 and the heat insulating panel 3 disposed between the outer surface materials 1, 2 sandwich the light-transmitting plate 4 between the through openings 1c, 2c, 31 portions. The door panel is configured by bonding in a state.

Next, a method for assembling the door panel configured as described above will be described.
First, the through-openings 1c and 2c are previously formed in the surface materials 1 and 2 by a saucer machine. In this case, the arrangement and number of the through-openings 1c and 2c can be changed by changing the program (data) of the panning machine for each of the surface materials 1 and 2. Furthermore, the shape of the through openings 1c and 2c can be changed by changing the mold.

Moreover, since the heat insulation panel 3 consists of several division body 3a, 3b, 3c as mentioned above, the above-mentioned surface material is changed by changing the arrangement position and number of division bodies 3a provided with the through opening 31, for example. It is possible to easily cope with a change in the arrangement and number of the through openings 1c and 2c of 1c and 2c.
Further, by stocking the divided bodies 3a having the through openings 31 having different shapes in advance, it is possible to easily cope with a change in the shape of the through openings 1c and 2c of the surface materials 1 and 2.
Accordingly, it is possible to produce the door panel design by receiving an order on a custom-made basis.

  In assembling the door panel, as one of the surface materials 1 and 2, for example, an adhesive is applied to almost the entire back surface of the outer surface material 1 (or the inner surface material 2). Next, the translucent plate 4 is attached to the position of each through opening 1 c on the back surface of the surface material 1. At this time, the peripheral portion 1 d formed by drawing the through-opening 1 c of the surface material 1 enters the groove 41 of the translucent plate 4, so that it can be easily placed at the position of the through-opening 1 c of the surface material 1. The translucent plate 4 can be aligned.

And after attaching the translucent board 4 to all the through-opening 1c parts of the surface material 1, the heat insulation panel 3 is adhere | attached on the back surface of the surface material 1. FIG. At this time, each of the divided bodies 3a, 3b, and 3c of the heat insulating panel 3 is pasted, but the divided body 3a having the through opening 31 has a recess for accommodating the light transmitting plate 4 as described above. 32 is formed, by attaching the divided body 3a to the surface material 1 so that the translucent plate 4 is put in the recess 32, the through-opening 31 of the divided body 3a can be easily formed in the through-opening 1c of the surface material 1. It can be aligned to communicate.
Further, when the heat insulating panel 3 is attached to the back surface of the surface material 1, an outer frame 5 (shown in FIGS. 3 and 4) on the rectangular frame is disposed so as to surround the heat insulating panel 3. The outer frame 5 is a channel-shaped steel material formed in a frame shape.

In addition, an adhesive is applied to the back surface of the other surface material 2, and the translucent plate 4 is attached in the same manner as the one surface material 1. And the heat insulation panel 3 affixed on one surface material 1 and the other surface material 2 are bonded together as mentioned above, and it is set as one door panel.
Thereafter, the bonded door panel is held in a state of being pressurized at a predetermined temperature to cure the adhesive.
Further, the above-described locks 6, 6, the handle 7, the hinge 8, etc. are attached.

  According to the door panel as described above, it is possible to easily manufacture a door panel having a heat insulating structure having an optimal daylighting portion as a front door at an extremely low cost. In particular, the light-transmitting plate that forms the daylighting portion can be easily attached by simply bonding without using an attachment member such as a frame. In addition, since the door panel can have a novel design and the door panel can be easily manufactured by changing the design, the door panel can be provided in a custom-made manner.

  INDUSTRIAL APPLICABILITY The present invention can be applied to various doors of buildings and can be suitably used for a front door of a house.

It is a figure which shows the door panel which concerns on embodiment of this invention, Comprising: It is a front view. FIG. FIG. FIG. It is an expanded sectional view of the principal part. It is a perspective view for demonstrating the manufacturing process of a door panel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer surface material 1c Through-opening 1d Surrounding part 2 Inside surface material 2c Through-opening 2d Surrounding part 3 Thermal insulation panel 31 Through-opening 32 Recessed part 3a Divided body 3b Divided body 3c Divided body 4 Translucent plate 41 Groove

Claims (3)

Outer surface material,
Inside surface material,
A heat insulating panel disposed between these outer and inner surface materials,
A through opening is formed so as to communicate with the outer surface material and the heat insulation panel, respectively,
A translucent plate that transmits light is disposed so as to close the through opening between the heat insulating panel and the outer surface material,
A recess for accommodating the light transmitting plate is formed around the through opening on the front and back surfaces of the heat insulating panel,
The door panel characterized in that the outer surface material and the heat insulating panel disposed between these outer surface materials are bonded to each other with the light-transmitting plate sandwiched between the through-opening portions.   The said heat insulation panel is divided | segmented into several division body, The division body in which the said through-opening was formed is arrange | positioned in the position corresponding to the through-opening of the surface material inside and outside. Door panels. The through-opening portion of the outer surface material is subjected to a drawing process for projecting the periphery of the surface material through-opening to the back side,
The groove into which the peripheral portion is inserted is formed along the peripheral portion protruding to the back side of the surface material on a surface facing the surface material outside or inside the light transmitting plate. The door panel of Claim 1 or Claim 2.

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