JP6050056B2 - Lighting cover member - Google Patents

Description

  The present invention relates to an illumination cover member that is disposed in an air conditioner operation unit, a shift lever operation unit, a start switch, or the like of an automobile and emits an illumination unit by illumination from the back side.

  2. Description of the Related Art A lighting cover member having a light-transmitting illumination unit on a design surface is known for an air conditioner operation unit, a shift lever operation unit, a start switch, and the like of an automobile. Such an illumination cover member is generally a resin molded product in which a decorative film is laminated and integrated on the surface, and the portion of the illumination part has translucency, and is illuminated by illumination from the back side of the illumination cover member. The illumination unit is configured to shine. Moreover, the design surface of such an illumination cover member is often provided with a metallic decoration part having a metallic luster in a place different from the illumination part. For example, in the illumination cover member described in Patent Document 1, a thin film metal layer capable of transmitting light is provided on a decorative film, and a printed layer is formed on the front side of the thin film metal layer. The part to be formed is transparent, the part not forming the metallic decoration part is opaque, and the part forming the illumination part is light-transmitting.

JP 2010-20047 A

  By the way, the illumination cover member described in Patent Document 1 is illuminated from the back side, so that the illumination unit emits light. Even when the illumination cover member is not illuminated from the back side, the front side (design surface side) of the illumination cover member. Since the pattern formed by the printed layer is visible, there is only a difference in whether the illumination part looks bright or not when illuminating the lighting cover member and when the illumination cover member is not illuminated. It was.

  This invention is made | formed in view of this present condition, and aims at provision of the illumination cover member which was rich in the designability.

  The present invention is an illumination cover member that is formed by laminating and integrating a decorative film on the surface of a support substrate, and includes an illumination unit that emits light by illumination from the back side, the decorative film having a metallic luster and light A thin film metal layer capable of transmitting light, a light-transmitting back surface protective layer integrally disposed on the back surface of the thin film metal layer, and a light-opaque light-shielding print printed on the back side of the back surface protective layer A metal-like decorative portion having a metallic luster formed on the surface, and the light-shielding printed layer is missing in a predetermined shape at a portion where the metal-like decorative portion is formed. The illumination cover member is characterized in that an illumination part is formed in the missing part.

  In such a configuration, since the light-shielding printed layer is formed on the back side of the thin film metal layer, the missing portion of the light-shielding printed layer is blocked by the metallic luster of the thin film metal layer when the illumination unit is not illuminated from the back side. Thus, it becomes impossible to discriminate, and the illumination part is buried in the metallic decoration part. On the other hand, in a state where the illumination unit is illuminated from the back side, the light is transmitted through the missing portion of the light-shielding print layer, so that the illumination unit shines and is visually recognized in the metallic decoration portion. Thus, in the present invention, in the state where the illumination unit is not illuminated from the back side, it becomes difficult to determine the shape of the illumination unit, and only when the illumination unit is illuminated from the back side, the illumination unit shines and appears. The design of the illumination cover member can be greatly changed depending on the presence or absence.

  In the present invention, the support base is provided with a light guide diffusing portion that is in contact with the back surface of the decorative film, is exposed on the back side, transmits and diffuses illumination light from the back side, and transmits the light to the back surface of the decorative film. A configuration is proposed.

  In such a configuration, the light irradiated from the back side is diffused by the light guide diffusing unit and reaches the entire illumination unit uniformly, so that the illumination unit can emit light without spots.

  Further, in the present invention, a film insert molded product manufactured by injection molding a support base material in a state where the decoration film is set in a mold, and a portion of the support base material that comes into contact with the decoration film; It is proposed that the back surface protective layer of the decorative film is composed of a compatible resin.

  In such a configuration, since the decorative film can be integrated with the surface of the supporting base material simultaneously with the forming of the supporting base material, the trouble of sticking the decorative film to the surface of the supporting base material can be saved. There is an advantage that can be.

  As described above, according to the present invention, the design of the illumination cover member changes greatly between when the illumination cover member is illuminated from the back side and when it is not illuminated. A rich design can be realized. Moreover, in this invention, the novel design which is not in the conventional illumination cover member is implement | achieved by forming an illumination part in a metallic decoration part.

It is a perspective view of the illumination cover member 1 of Example 1. FIG. It is a perspective view which cut | disconnects and shows the illumination cover member 1 of Example 1. FIG. FIG. 3 is a rear view of the illumination cover member 1 according to the first embodiment. It is explanatory drawing which shows the layer structure of the decorative film 11 of Example 1. FIG. It is explanatory drawing which shows the effect | action of the illumination cover member 1 of Example 1. FIG. FIG. 3 is an explanatory diagram of a usage state of the illumination cover member 1 according to the first embodiment. It is a perspective view of the illumination cover member 1a of Example 2. FIG. It is a perspective view which shows the assembly | attachment aspect of the illumination cover member 1a of Example 2. FIG. It is explanatory drawing which shows the effect | action of the illumination cover member 1a of Example 2. FIG.

  Embodiments of the present invention are described according to the following examples.

  The illumination cover member 1 of a present Example is a bezel which comprises the start button of the engine of a motor vehicle, as shown in FIGS. The illumination cover member 1 has a short cylindrical shape, and is configured to fit the start switch body P in the center through hole 2 so as to be slidable in the front-rear direction. In addition, the illumination cover member 1 is formed with an annular hollow groove 6 that opens to the back side. On the front side of the illumination cover member 1, a metallic decorative portion 3 having a metallic luster is provided over the entire circumference. In the present embodiment, in this metallic decoration part 3, three illumination parts 4 composed of characters “OFF”, “ACC”, and “ON” are provided. That is, the illumination cover member 1 is configured so that light can pass through a portion where the illumination unit 4 is formed, and each illumination unit 4 is illuminated from the back side of the illumination unit 4 using a light source such as an LED (light emitting diode). Is configured to emit light. Here, as shown in FIG. 3, in the hollow groove 6, the back side region of each illumination unit 4 is partitioned separately by the partition plate 7, and a light source is installed in the back side region of each illumination unit 4 of the hollow groove 6. By doing so, the three illumination parts 4 can be made to emit light individually.

  The configuration of the illumination cover member 1 will be specifically described. As shown in FIGS. 2 and 3, the illumination cover member 1 includes a short cylindrical support base 10 that is the main body of the illumination cover member 1, and the support base. 10 is provided with a decorative film 11 which is laminated and integrated on the front side of 10 to form the metallic decorative portion 3. The support substrate 10 includes a light transmissive light guide diffusion portion 13 and a light opacity light shielding portion 14. The light guide diffusing unit 13 is made of a transparent ABS resin containing a light diffusing agent and transmits light irradiated from the back side to the back side of the decorative film 11 and is arranged on the front side of the support substrate 10. It is provided and is configured to be able to irradiate the back surface of the decorative film 11 from the hollow groove portion 6 through the light guide diffusion portion 13 by being in contact with the back surface of the decorative film 11 and being exposed to the hollow groove portion 6 on the back side. Has been. On the other hand, the light shielding part 14 is made of black ABS resin that does not transmit light, and is disposed on the back side of the light guide diffusion part 13 to form the outer peripheral part and inner peripheral part of the support base material 10. The light irradiated from the hollow groove 6 is prevented from leaking out to the surroundings.

  The decorative film 11 is formed with a metallic decoration having a metallic luster on the entire surface. As shown in FIG. 4, a thin film metal layer 21 having a metallic luster and a surface provided on the surface of the thin film metal layer 21. The protective layer 22 includes a back surface protective layer 23 provided on the back side of the thin film metal layer 21, and a printed layer 24 printed on the back side of the back surface protective layer 23. The thin metal layer 21 is made of a metal thin film such as indium. The thin metal layer 21 reflects a portion of the irradiated light and transmits a portion of the light, thereby exhibiting a metallic luster by the light from the front side and the back side. The light from is partially transmitted to the front side. As the metal thin film, a vacuum deposited film formed by vacuum deposition on a resin film or a sputtered film formed by sputtering on a resin film is preferably used. The thickness of the metal thin film is preferably 400 to 700 mm. If the film thickness is 400 mm or more, the thin metal layer 21 exhibits a sufficient metallic luster, and if the film thickness is 700 mm or less, a sufficient amount of light can be transmitted through the thin film metal layer 21. The surface protective layer 22 includes a PET resin layer 22b serving as a metal thin film substrate of the thin film metal layer 21, and an acrylic resin layer 22a formed on the surface of the PET resin layer 22b. The acrylic resin layer 22a and the PET resin layer 22b are made of a transparent resin, protect the surface of the thin film metal layer 21, and make the metallic luster of the thin film metal layer 21 visible from the front side. On the other hand, the back surface protective layer 23 is composed of a light-transmitting ABS resin film having a thickness of about 200 to 250 μm, and the thin metal layer 21 is heated when the support substrate 10 is injected to the back side. It functions as a heat insulating layer that prevents whitening. Further, the back surface protective layer 23 constitutes the printing surface of the printing layer 24. The printing layer 24 includes a light-shielding printing layer 24a formed of a light-impermeable black ink and a colored printing layer 24b formed of a light-transmitting blue ink. As shown in FIG. 4, the light-shielding print layer 24 a is missing at a portion where the illumination unit 4 is formed, so that light irradiated from the back side is transmitted only through the illumination unit 4. On the other hand, the colored printing layer 24b is formed of a light-transmitting blue ink, and colors light transmitted through the illumination unit 4 in blue.

  According to the decorative film 11, when the illumination unit 4 is illuminated from the back side, the illumination unit 4 shines and is visually recognized in the metallic decoration unit 3 by transmitting light through the portion of the illumination unit 4. . On the other hand, in a state where the illumination unit 4 is not illuminated from the back side, the missing portion 25 of the light-shielding print layer 24a is obstructed by the metallic luster of the thin film metal layer 21, making it difficult to visually recognize, so that the shape of the illumination unit 4 is determined from the front side. It becomes difficult.

  In the state in which the start switch Q is configured, the lighting cover member 1 of the present embodiment is provided with an LED 9 serving as a light source inside the hollow groove portion 6 and behind the lighting portion 4 as shown in FIG. Established. When the LED 9 is turned off, the illumination unit 4 does not emit light as shown in FIGS. 5A and 6A, and the illumination unit 4 is in the metallic luster of the metallic decoration 3. It becomes buried and difficult to distinguish. On the other hand, when the LED 9 is turned on, as shown in FIG. 5B, the irradiation light of the LED 9 is transmitted through the illuminating unit 4, and the illuminating unit 4 shines in the metallic decoration 3. Here, since one LED 9 is disposed on the back side of each illumination unit 4, each illumination unit 4 corresponds to the operation state of the start switch Q as shown in FIGS. 6 (b) to 6 (d). By turning on the light source on the back side, the illumination part 4 can be selectively illuminated in the metallic decoration part 3. Further, in this embodiment, since the light diffusing agent is mixed in the resin constituting the light guide diffusing portion 13, the irradiation light of the LED 9 diffuses when passing through the light guide diffusing portion 13, The entire illumination unit 4 is irradiated substantially uniformly. For this reason, in a present Example, each part of the illumination part 4 can be made to shine with substantially equal brightness.

  The lighting cover member 1 of the present embodiment can be easily manufactured by film insert molding. Specifically, first, a film having the protective layers 22 and 23 on both sides of the thin metal layer 21 is manufactured, and then the printing layer 24 is printed on the back surface of the film, whereby the decorative film 11 without unevenness is formed. obtain. Then, the decorative film 11 is shaped by pressure forming or the like, and the periphery is cut so that it can be set in a mold. Then, the decorative film 11 obtained is set so that the front side is in contact with the mold surface of the mold, and two-color molding is performed in the order of the light guide diffusion portion 13 and the light shielding portion 14, so that the surface of the support substrate 10 is formed. The lighting cover member 1 in which the decorative film 11 is laminated and integrated is manufactured.

  As described above, the illumination cover member (bezel) 1 of the present embodiment cannot be discriminated in the metallic decoration portion 3 when the illumination cover member (bezel) 1 is not illuminated from the back side, and is not shielded when illuminated from the back side. Light is transmitted through the missing portion 25 of the printed layer 24a, and the illumination unit 4 is illuminated and visually recognized. Therefore, in this embodiment, the illumination part 4 appears in the metallic decoration part 3 only when the illumination cover member 1 is illuminated from the back side. Therefore, the design of the illumination cover member 1 is turned on and off when the illumination is turned on. There is an advantage that can be greatly changed. Further, by forming the illumination part 4 in the metallic decoration part 3, there is also an advantage that a novel design that has not existed before can be realized.

  Further, in this embodiment, since the light from the light source is diffused by the light guide diffusing unit 13 that is in contact with the back surface of the decorative film 11, there is an advantage that the illumination unit 4 can emit light without spots.

  In the present embodiment, the support base material 10 (the light guide diffusion portion 13 and the light shielding portion 14) and the back surface protective layer 23 of the decorative film 11 are made of compatible resins (both are ABS resins). When the lighting cover member 1 is manufactured by film insert molding, there is an advantage that the decorative film 11 can be laminated and integrated on the surface of the support base 5 without using an adhesive or the like.

  FIG. 7 is a perspective view of the illumination cover member 1a according to the second embodiment. As shown in FIG. 8, the illumination cover member 1 a is assembled at the upper center of the operation knob R to form a metallic decoration on the surface of the operation knob R. Specifically, as shown in FIG. 7, the lighting cover member 1 a is formed by covering the front side (upper side) of the support base material 10 a with the decorative film 11 a and arranging the metallic decoration portion 3 a on the front side. In the metallic decoration portion 3a, a rectangular illumination portion 4a is provided on the right side portion. In addition, the structure of the decoration film 11a is the same as Example 1 except the shapes of the illumination part 4a differing. The support base material 10a is a rectangular parallelepiped main body portion 26 provided at an upper portion and covered with the decorative film 11a, a light guide leg portion 27 extending from the right side of the main body portion 26 to the back side, and a left side of the main body portion 26. The locking claw 28 extends to the back side and engages with the operation knob R. This support base material 10a is composed only of a transparent ABS resin containing a light diffusing agent. In this embodiment, the entire support base material 10a diffuses light irradiated from the back side while the back surface of the decorative film 11a. The light guide diffusing unit that transmits the light is configured. In this embodiment, as shown in FIG. 9, the LED (light source) 9 is disposed at the tip of the light guide leg 27, and the irradiation light of the LED 9 extends from the tip of the light guide leg 27 to the inside of the support base material 10 a. And the received irradiation light is transmitted to the back surface of the decorative film 11a through the inside of the support substrate 10a. Thus, in the present invention, the light of the light source may be guided to the back surface of the decorative film through the inside of the support base material without being applied from the back of the decorative film. Moreover, the support base material which concerns on this invention can also be comprised only with transparent resin.

  According to the above configuration, when the LED (light source) 9 is turned off, the illumination cover member 1a of the present embodiment does not emit light, as shown in FIG. 9A, and the metallic decoration 3a. It is difficult to distinguish it because it is buried in the metallic luster. On the other hand, in the lighting state of the LED 9, as shown in FIG. 9B, the irradiation light of the LED 9 is irradiated from the tip of the light guide leg portion 27 to the inside of the support base material 10a, and through the inside of the support base material 10a. When the irradiation light that has reached the back surface of the decorative film 11a passes through the illumination unit 4a, the illumination unit 4a is illuminated and visually recognized in the metallic decoration unit 3a.

  In addition, the illumination cover member of this invention can add a various change in the range which does not deviate from the summary of not only the form of the said Example but this invention. For example, the illumination cover member of the above embodiment is a bezel of a start switch, but the illumination cover member of the present invention is not limited to the shape of the illumination cover member of the embodiment, and illumination that emits light by illumination from the back side. If it has a part, the shape will not be specifically limited.

  Further, the lighting cover member of the above embodiment was decorated with a metallic tone on the entire front side by a decorative film, but the lighting cover member according to the present invention is not limited to being decorated only by a decorative film, but is painted. Or decoration with other films can be used together. In addition, the decorative film according to the present invention is not limited to the one having a metallic luster on the entire surface, and a decoration other than the metallic decoration portion can be applied to a part of the decorative film.

  Moreover, in the said Example, although the illumination cover member 1 is illuminated by LED9 from the back side, the light source which illuminates a illumination cover member from the back side is not restricted to LED, An incandescent lamp, EL (electroluminescence), etc. can be used. .

DESCRIPTION OF SYMBOLS 1,1a Illumination cover member 2 Through-hole 3 Metal decoration part 4,4a Illumination part 6 Hollow groove part 7 Partition plate 9 LED
DESCRIPTION OF SYMBOLS 10,10a Support base material 11,11a Decoration film 13 Light guide diffusion part 14 Light-shielding part 21 Thin film metal layer 22 Surface protective layer 23 Back surface protective layer 24 Print layer 24a Light-shield print layer 24b Colored print layer 25 Missing part 26 Body part 27 Conduction Light leg 28 Locking claw P Start switch body Q Start switch R Operation knob

Claims (3)

A lighting cover member comprising a decorative film laminated and integrated on the surface of the support substrate, and having an illumination part that emits light by illumination from the back side,
Decorative film
Printed on the back side of the backside protective layer, which has a metallic luster and is capable of transmitting light, a light-transmitting backside protective layer integrally disposed on the backside of the thinned metal layer A light-opaque light-shielding printing layer, and a metallic decorative part having a metallic luster is formed on the surface,
The light-shielding print layer is missing in a predetermined shape at the part that forms the metallic decoration part, and the illumination part is formed at the lacking part of the light-shielding print layer,
The support substrate is a two-color molded product composed of a light guide diffusion part made of a light transmissive resin and a light shielding part made of a resin that does not transmit light, and has a hollow groove part for installing a light source on the back side of the illumination part. It is equipped with
The light guide diffusion part is disposed on the front side of the support base material and abuts on the back surface of the decorative film, and is exposed to the hollow groove part on the back side, so that the back surface of the decoration film is passed through the light guide diffusion part from the hollow groove part. Is configured to be able to irradiate light from the light source,
The light shielding part is configured to form a peripheral part of the support base on the back side of the light guide diffusion part, and to prevent light from the light source from leaking out of the hollow groove part. Lighting cover member.   2. The illumination cover according to claim 1, wherein the light guide diffusion part is made of a resin containing a light diffusing agent, transmits and diffuses light from the light source of the hollow groove part, and transmits the light to the back surface of the decorative film. Element. It is a manufacturing method of the lighting cover member according to claim 1 or 2,
In a state where the decorative film is set in a mold, a film insert molding process for injection-molding a support base material is included.
In the film insert molding step, a two-color molding is performed in the order of the light guide diffusing portion and the light shielding portion, and the method of manufacturing the illumination cover member.

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