JP5728100B1 - Manufacturing method for vehicle interior lighting device and vehicle interior lighting device - Google Patents

Abstract

Provided is a vehicle interior lighting device that is converted to an LED within a reasonable cost without impairing the sense of unity of illuminance and hue. A plurality of regions 104, 106, etc. are divided on the surface of a substrate 102 constituting a vehicle interior lighting device 100 in accordance with the shape of an opening for mounting a rear room lamp, a luggage lamp, etc., respectively. A portion corresponding to the peripheral edge of the divided area is removed from the substrate 102 except for a part of the bridge 104 a and the like, and each area is formed in an island shape connected to the substrate 102. The LED element 116 and the like are arranged in each region, and the substrate-side electrode provided on the back surface of the substrate 102 is connected to the electrode of each LED element through a conductive pattern (not shown). [Selection] Figure 1

Description

  The present invention relates to a method for manufacturing a vehicle interior lighting device and a vehicle interior lighting device that use a light emitting diode (hereinafter referred to as LED).

  While power saving is required in every field of society, so-called LED conversion is rapidly progressing, where lighting fixtures used in homes, stores, and offices are replaced with light emitting diodes (LEDs). Yes. LED lighting fixtures have characteristics of low power consumption and long life compared to conventional incandescent bulbs and fluorescent lamps. Therefore, it contributes to power saving and running cost reduction related to illumination.

  In automotive lighting, LED lighting started with exterior lighting such as stop lamps. Since then, with the aim of enhancing the production effect in the passenger compartment, the use of LEDs that enable illumination-like foot lighting and indirect lighting has been promoted. For illumination, there is a tendency that colored light is preferred over white light, and contrivances such as producing a calm atmosphere with low illuminance have been elaborated.

  On the other hand, since bright white light is indispensable for vehicle interior lighting (for example, room lamps, map lamps, etc.), an LED-based light source with sufficient brightness with white light is reasonable for its LED conversion. We had to wait for the price to be offered to the market. Since these requests have been satisfied in recent years, the use of LEDs for vehicle interior lighting is expanding.

  A light source (light bulb or LED lighting unit) for vehicle interior lighting such as a room lamp is usually covered with a cover, but is disposed at a position where a user's hand can reach. Therefore, if the user has some knowledge and experience about automobile parts, a so-called genuine room lamp can be replaced with an LED lighting unit (one or more LED elements mounted on a substrate). . LED lighting units are commercially available for such users (see Non-Patent Document 1, for example).

Author name unknown, “LED for Room Lamp”, [online], date of publication unknown, PIAA Corporation, [searched on January 10, 2014], Internet <URL: http://www.piaa.co. jp / products / car / led / sparkmoon /〉

  A vehicle interior lighting unit such as a room lamp is configured by attaching a unit body to which a light source (light bulb or LED) is connected to a ceiling of a vehicle compartment and covering the light emitting side opening of the unit body with a lens cover. Has been. Since the shape of the opening varies depending on the vehicle model, the shape of the LED lighting unit can be reduced in size and size (for example, rectangular) to suit many vehicle models, or a product lineup that matches the shape of the opening for each vehicle type is available. You need to choose what to do.

Since the shape of the opening for the vehicle interior lighting unit varies depending on the vehicle type, processing the shape of the outer edge of the substrate in accordance with the shape tends to increase the cost. For this reason, commercially available LED lighting units are often small and fixed types as described in Non-Patent Document 1. However, naturally, in such an LED lighting unit, since the light source cannot be disposed all over the opening for the vehicle interior lighting unit, the effect of the obtained illumination is limited.

  On the other hand, products in which LED lighting units in which the shape of the outer edge of the substrate is processed according to the vehicle type are set are also sold. However, in such an LED lighting unit, for example, the ceiling lamp and the map lamp may be manufactured in different lots. In that case, the possibility of impairing the unity of illuminance and color cannot be denied.

The present invention has been made in order to solve such a problem, and it is possible to select the shape of the outer edge of the vehicle interior lighting unit in accordance with the shape of the opening that is different for each vehicle type while mounting the LED element. It is an object of the present invention to provide a vehicle interior lighting device that is configured using a substrate and that does not impair the sense of unity of illuminance and hue within a reasonable cost.

  In order to solve the above-described problems, a method for manufacturing a vehicle interior lighting device according to the present invention includes a method for manufacturing a vehicle interior lighting device for an automobile, wherein two or more vehicle interior lighting units of a target vehicle type are provided on a substrate surface. Two or more regions are divided in accordance with the shape of each of the openings to be attached, and in each of the divided regions, a conductive pattern that determines an attachment position of the LED element and can be connected to an electrode of the LED element to be attached. A portion corresponding to the periphery of the partitioned area is removed from the substrate, leaving a part, and the LED element is attached to the mounting position of the LED element provided in the partitioned area, and the LED element The electrode is connected to the conductive pattern.

  In the vehicle interior lighting device according to the present invention, in the vehicle interior lighting device for an automobile, two or more regions are divided according to the shape of the opening to which each of the two or more vehicle interior lighting units of the target vehicle type is attached. And a portion corresponding to the periphery of the partitioned region is removed except for a part, and a substrate provided with a conductive pattern is attached to the partitioned region, and an electrode is provided on the conductive pattern. And a connected LED element.

According to the present invention, the LED element is mounted and the board is configured using a substrate that can select the shape of the outer edge in accordance with the shape of the opening for the vehicle interior lighting unit that is different for each vehicle type. A vehicle interior lighting device that does not impair the feeling can be provided within a reasonable cost.

The top view showing the structure of the vehicle interior lighting apparatus which concerns on embodiment of this invention. The top view and additional drawing showing the structure of the back surface of 1 area | region of the board | substrate with which the vehicle interior lighting apparatus which concerns on embodiment of this invention was formed. The flowchart explaining the manufacturing method of the vehicle interior lighting device which concerns on embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a plan view showing the configuration of a vehicle interior lighting device 100 according to an embodiment of the present invention. The vehicle interior lighting device 100 is intended to be applied to a specific vehicle type. The vehicle interior lighting device 100 is formed on a substrate 102 made of, for example, a glass epoxy material. Regions 104, 106, 108, 110, 112, and 114 are divided and formed on the surface of the substrate 102 on the side shown in FIG.

  Each of the above-described regions is formed by removing a part corresponding to the periphery from the substrate 102 leaving a part. In FIG. 1, for example, a portion corresponding to the periphery of the region 104 is represented by a thick black line, and five places where the thick line is traced (one of which is denoted by reference numeral 104 a).

  The black thick line represents a portion that is removed from the substrate 102 to form a slit. The traces of the bold lines represent the portions left without being removed from the substrate 102. As a result, the region 104 is formed in an island shape that is surrounded by the slit and is connected to the substrate 102 by a mark portion (called a bridge) 104a or the like. The other regions 106, 108, 110, 112, and 114 are formed so as to be connected to the substrate 102 in the same manner as the region 104.

  The shape of the region 104 corresponds to the shape of an opening to which, for example, a rear seat indoor lamp (rear room lamp) is attached in a vehicle type to which the vehicle interior lighting device 100 is applied. The shape of the region 106 is adapted to the shape of an opening to which, for example, a luggage compartment lamp (luggage lamp) is attached in the same vehicle type.

  The shapes of the regions 108 and 110 are adapted to the shape of the opening to which the driver's seat and passenger's seat interior lights (or map lamps) are attached, for example. The shape of the regions 112 and 114 is adapted to the shape of the opening to which a so-called vanity lamp for a driver seat and a passenger seat is attached in the same vehicle type.

  An LED element is attached to the inside of the region 104 (one of them is denoted by reference numeral 116). In FIG. 1, each LED element is represented by a hatched rectangular symbol. As the LED element, for example, a surface mount device (SMD) structure capable of obtaining brightness suitable for vehicle interior lighting can be used, but the present invention is not limited to this. The LED element is similarly attached inside the other regions 106, 108, 110, 112 and 114.

  The LED element 116 is attached at an attachment position defined inside the region 104. A conductive pattern (not shown) provided in advance on the substrate 102 is connected to an electrode (not shown) of the LED element 116. Similarly, a conductive pattern (not shown) is connected to the electrodes of other LED elements (not labeled) attached to the inside of the region 104. Similarly, a conductive pattern (not shown) is connected to the electrode of each LED element that is not labeled and is attached inside the other regions 106, 108, 110, 112, and 114.

  FIG. 2 is composed of a plan view (upper view) and a supplementary view (lower view) showing the configuration of the back surface of the region 104. Substrate side contacts 120 and 122 are attached to the back surface of the region 104. The attached drawing is a view showing the substrate side contacts 120 and 122 in parallel with the surface formed by the substrate 102 from the bottom to the top in the plan view. Each of the substrate-side contacts 120 and 122 is formed, for example, by forming a conductive material in a cylindrical shape and further forming one of the bottom surfaces on a cone.

  The two broken lines in the drawing show the correspondence between the tops of the conical portions of the substrate-side contacts 120 and 122 in the plan view and the accompanying drawings. Each of the configurations denoted by reference numerals 124 and 126 in the accompanying drawings is, for example, a metal plate. The metal plate 124 mechanically supports the substrate-side contact 120 and electrically connects to a conductive pattern (not shown) of the substrate 102. The metal plate 126 mechanically supports the substrate side contact 122 and electrically connects to a conductive pattern (not shown) of the substrate 102.

  The substrate side contacts 120 and 122 are mechanically coupled via a connecting portion 128 made of, for example, a non-conductive material. The substrate side contacts 120 and 122, the metal plates 124 and 126, and the connecting portion 128 are combined with each other to form the substrate side electrode 130. The position of the board-side electrode 130 is composed of a vehicle-side electrode (a positive electrode and a negative electrode) provided inside an opening of a vehicle type to which the vehicle interior lighting device 100 is applied, for example, a rear seat interior light. Z)). The shape of the substrate-side electrode 130 is such that it can be connected to the vehicle-side electrode (one of the substrate-side contacts 120 and 122 is connected to the positive electrode and the other is connected to the negative electrode).

  A method of using the vehicle interior lighting device 100 will be described. As described above, the regions 104 and 106 of the substrate 102 on which the vehicle interior lighting device 100 is configured are formed in an island shape surrounded by the slits. Therefore, for example, by cutting a bridge 104a or the like that hits a portion of the slit surrounding the region 104 using a tool such as a nipper, the portion of the region 104 can be separated from the substrate 102.

  The region 104 has an outer shape that matches the shape of the opening to which the rear seat room lamp for the applicable vehicle type is attached. Therefore, it is possible to remove a so-called genuine rear seat interior light (lens cover and light bulb) from the vehicle body of the vehicle type and insert the region 104 into the vacant opening. The region 104 includes a substrate side electrode 130 whose position and shape are matched to the vehicle body side electrode as shown in FIG. The substrate side electrode 130 can be connected to the vehicle body side electrode by inserting the region 104 into the opening and pushing it toward the vehicle body side.

  Then, electricity can be supplied from the vehicle body side electrode to the LED element 116 in the LED element 116 and other regions 104 through the conductive pattern (not shown) of the substrate side electrode 130 and the substrate 102. If the lens cover is attached again covering the area 104, the rear seat interior light bulb is replaced with the LED.

  Referring to FIG. 1, inside the region 104, LED elements are attached at a relatively high density around the LED elements 116. Since the periphery of the LED element 116 corresponds to the position where the genuine light bulb is attached, the concentration of the LED element in that portion is increased to bring the brightness closer to that when the genuine product is attached. be able to. In addition, as shown in FIG. 1, by arranging the LED elements all the way to the periphery of the region 104, the room lamp can be turned on over the entire surface of the lens cover.

  It is also possible to select the mounting position in the area of the LED element so that the uniformity of the illuminance of the indoor lamp after replacement with the LED can be improved according to the optical characteristics of the lens cover used. . If it does in this way, the optimization of the vehicle interior lighting after replacing with LED can be aimed at for every target vehicle type.

  Similarly, the other regions 106 and the like can be used for replacing the luggage compartment lights and other interior lights corresponding to the shapes of the openings with the LEDs. As described above, the LED elements in which each room light is replaced are attached to the same substrate 102, and are usually products of the same lot. Therefore, the sense of unity of illuminance and color is not impaired as the whole room light.

  Means capable of hanging a jig having a hook-shaped tip can be appropriately provided inside the region 104 or the like. As such means, a hole penetrating from the front surface to the back surface may be formed in an empty space in the region, or a ring-shaped member may be attached. By attaching a jig having a hook-shaped tip to such a hole or member, workability in the case where the room lamp is replaced again at a later date can be improved.

  FIG. 3 is a flowchart for explaining a method of manufacturing vehicle interior lighting device 100 according to the present embodiment. First, the substrate 102 is prepared, and the region 104 and others are divided according to the shape of the opening to which each of the interior vehicle lamps of the applicable vehicle type is attached (step S1).

  The attachment position of the LED element in each region is determined. For this purpose, in consideration of the mounting position of the genuine bulb, the optical characteristics of the lens cover, the characteristics of the LED elements to be used, and the like, how many LED elements are to be arranged and how are selected (step S2). ).

  A land for the electrode of the LED element is provided at the mounting position of the LED element, and a conductive pattern connected thereto is provided (step S3). This step can be performed by a known method for producing a printed board.

  The portion corresponding to the region 104 and other peripheral edges delimited in step S1 is removed from the substrate 102 while leaving a bridge portion such as the bridge 104a (step S4). Specifically, a method such as die cutting by press working is conceivable, but the method is not limited to this.

  The LED element is attached to the attachment position determined in each region of the substrate, and the electrode of the LED element is connected to the conductive pattern of the substrate 102 (step S5). This step can be performed by a known method for producing a printed circuit board circuit unit.

  The order of the above steps is not limited as described above, and can be appropriately selected according to the convenience of facilities and personnel. Further, for example, following step S3 or step S4, a means capable of hanging a jig whose tip is a hook shape may be attached. Further, for example, following step S <b> 5, the substrate-side electrode 130 may be attached to the back surface of the substrate 102.

  According to the embodiment described above, it is possible to select each of the interior lamps by simply selecting a vehicle interior lighting device product suitable for the target vehicle type, separating each area of the board from the board, and mounting it in a predetermined opening. It is very easy to replace the LED and obtain a balanced lighting effect.

  The above embodiment has been described by way of example and can be modified as appropriate within the scope of the present invention. For example, the substrate-side electrode 130 is not fixed to the back surface of the substrate 102 but may be connected to the substrate 102 via a lead wire. The configuration of the substrate-side electrode 130 is not limited to that shown in FIG. Although it is assumed that the LED element is of a single type, a plurality of types of LED elements may be used in some cases. The material of the substrate 102 is not limited to glass epoxy. The shape of the region 104 and the like can be changed according to the target vehicle type.

DESCRIPTION OF SYMBOLS 100 Car interior lighting apparatus 102 Board | substrate 104,106,108,110,112,114 area | region 104a Bridge 116 LED element 120,122 Board | substrate side contact 124,126 Metal plate 128 Connection part 130 Board | substrate side electrode

Claims (8)

In a method for manufacturing a vehicle interior lighting device for an automobile,
Two or more areas are separated on the surface of the substrate in accordance with the shape of the opening to which two or more vehicle interior lighting units of the target vehicle type are attached,
In each of the divided areas, a conductive pattern that can be connected to the electrode of the LED element to be attached and to determine the attachment position of the LED element,
Removing a portion corresponding to the periphery of the partitioned region from the substrate leaving a part;
A method for manufacturing a vehicle interior lighting device, comprising: attaching an LED element to an attachment position of the LED element provided in the partitioned area; and connecting an electrode of the LED element to the conductive pattern. A vehicle body side electrode provided on the inner side of the opening on the surface opposite to the surface on which the LED element is mounted inside the region partitioned in accordance with the shape of the opening to which the vehicle interior lighting unit is mounted The method for manufacturing a vehicle interior lighting device according to claim 1, further comprising: attaching a substrate-side electrode to a position corresponding to 1 so as to be connected to the electrode on the vehicle body side. The mounting position of the LED element,
A part of the board to which the LED element is attached is removed from the board in the divided area and attached to an opening to which the vehicle interior lighting unit is attached, and a lens cover of the vehicle interior lighting unit is further attached. And when energized from the electrode on the vehicle body provided inside the opening with respect to the conductive pattern, so that the uniformity of illuminance can be enhanced in accordance with the characteristics of the lens cover,
The method of manufacturing a vehicle interior lighting device according to claim 1, wherein the vehicle interior lighting device is defined.   The method for manufacturing a vehicle interior lighting device according to claim 1, further comprising means capable of hanging a jig having a hook-shaped tip inside the partitioned area. In the interior lighting device for automobiles,
Two or more regions are divided according to the shape of the opening to which two or more vehicle interior lighting units of the target vehicle type are respectively attached, and a part corresponding to the periphery of the divided region is left partially. A substrate which is removed and provided with a conductive pattern;
A vehicle interior lighting device comprising: an LED element attached to the partitioned area and having an electrode connected to the conductive pattern. The vehicle body side provided inside the opening on the surface opposite to the surface on which the LED element is attached, inside the area partitioned in accordance with the shape of the opening to which the vehicle interior lighting unit is attached The vehicle interior lighting device according to claim 5, further comprising a substrate side electrode provided so as to be connected to the vehicle body side electrode at a position corresponding to the electrode. The LED element is
A part of the board to which the LED element is attached is removed from the board in the divided area and attached to an opening to which the vehicle interior lighting unit is attached, and a lens cover of the vehicle interior lighting unit is further attached. In addition, when the conductive pattern is energized from an electrode on the vehicle body provided inside the opening, the position is fixed and attached so that the illuminance uniformity can be enhanced in accordance with the characteristics of the lens cover. The vehicle interior lighting device according to claim 5.   The vehicle interior lighting device according to claim 5, further comprising means capable of hanging a jig having a hook-shaped tip inside the partitioned area.

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