Vehicular illuminating device, and vehicular lighting fixture

Abstract

To provide a vehicular illuminating device that can restrain a short circuit between a circuit element and a socket terminal of a socket, and a vehicular lighting fixture.SOLUTION: A vehicular illuminating device according to an embodiment comprises: a base part; a light emitting element provided on the side of a first end part of the base part in a first direction; a first terminal provided near a second end part opposed to the first end part of the base part in the first direction; and a first circuit element provided near the first terminal on the base part, and on the side opposite to the side of the first end part with respect to the first terminal, and comprising a second terminal electrically connected to the light emitting element, and a third terminal electrically connected to the first terminal. The second terminal and the third terminal are provided in an end part of the first circuit element in a second direction intersecting with the first direction.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] An embodiment of the present invention relates to a vehicle lighting device and a vehicle lamp. [Background technology]

[0002] Wedge base light bulbs that do not have a base are used as vehicle lighting devices. Wedge base light bulbs are incandescent light bulbs. Therefore, from the viewpoints of power saving and life extension, wedge base light bulbs are being replaced with vehicle lighting devices equipped with light emitting elements such as light emitting diodes. In this case, the vehicle lighting device equipped with the light emitting element is provided with circuit elements such as diodes and resistors that are electrically connected to the light emitting element.

[0003] Here, the wedge base bulb is mounted in a socket provided in the vehicle lamp by being pushed in. When using a vehicle lighting device equipped with a light emitting element instead of the wedge base bulb, it is preferable to be able to mount the vehicle lighting device equipped with a light emitting element in the socket in which the wedge base bulb was mounted.

[0004] However, since a circuit element is provided in a vehicle lighting device equipped with a light-emitting element, there is a risk of a short circuit between the circuit element and the socket terminal of the socket when the vehicle lighting device equipped with a light-emitting element is attached to a socket. Therefore, there has been a demand for the development of a technique capable of preventing short circuits between the circuit element and the socket terminal of the socket. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2021-106078 A Summary of the Invention [Problem to be solved by the invention]

[0006] An object of the present invention is to provide a vehicle lighting device and a vehicle lamp capable of suppressing a short circuit between a circuit element and a socket terminal of a socket. [Means for solving the problem]

[0007] A vehicle lighting device according to an embodiment includes a first circuit element having a base, a light-emitting element provided on a first end of the base in a first direction, a first terminal provided near a second end of the base facing the first end in the first direction, a second terminal provided on the base near the first terminal and on the opposite side of the first terminal from the first end, electrically connected to the light-emitting element, and a third terminal electrically connected to the first terminal. The second terminal and the third terminal are provided at ends of the first circuit element in a second direction intersecting the first direction. Effect of the Invention

[0008] According to the embodiments of the present invention, it is possible to provide a vehicle lighting device and a vehicle lamp that are capable of suppressing a short circuit between a circuit element and a socket terminal of a socket. [Brief description of the drawings]

[0009] [Figure 1] 1 is a schematic perspective view illustrating a vehicle lighting device according to an embodiment of the present invention; [Diagram 2] 2 is a schematic plan view of the vehicle lighting device in FIG. 1 as viewed from the Z direction. [Diagram 3] 2 is a schematic side view of the vehicle lighting device in FIG. 1 as viewed from a Y direction. [Figure 4] 2 is a schematic side view of the vehicle lighting device in FIG. 1 as viewed from an X direction. [Diagram 5] 13 is a schematic perspective view illustrating a vehicle lighting device according to another embodiment. FIG. [Figure 6] 1 is a schematic diagram illustrating a vehicle lamp according to an embodiment of the present invention; [Figure 7] 10A and 10B are schematic diagrams illustrating a vehicle lamp according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment will be described with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals, and detailed description thereof will be omitted as appropriate. Examples of the vehicle lighting device 1 according to the present embodiment include room lamps, meter lamps, reading lights, brake lights, turn signals, tail lights, etc. that are provided in automobiles, railroad cars, etc. However, the uses of the vehicle lighting device 1 are not limited to these.

[0011] In addition, arrows X, Y, and Z in each drawing represent three directions perpendicular to each other. For example, the X direction (corresponding to an example of a first direction) can be the direction in which the vehicle lighting device 1 is attached to or detached from the socket 101 of the vehicle lamp 100 (the direction in which it is inserted or pulled out). The Y direction (corresponding to an example of a second direction) can be the width direction of the vehicle lighting device 1 (base 10). The Z direction can be the thickness direction of the vehicle lighting device 1 (base 10).

[0012] (Vehicle lighting device) FIG. 1 is a schematic perspective view illustrating a vehicle lighting device 1 according to the present embodiment. FIG. 2 is a schematic plan view of the vehicle lighting device 1 in FIG. 1 as viewed from the Z direction. FIG. 3 is a schematic side view of the vehicle lighting device 1 in FIG. 1 as viewed from the Y direction. FIG. 4 is a schematic side view of the vehicle lighting device 1 in FIG. 1 as viewed from the X direction. As shown in FIGS. 1 to 4, a vehicle lighting device 1 includes a base 10 and a light-emitting circuit 20, for example.

[0013] The base 10 is, for example, a plate-like body. The shape of the base 10 when viewed from the Z direction is, for example, a rectangle. In order to easily replace a conventional wedge base light bulb, the dimension W (width dimension) of the base 10 in the Y direction can be 5.0 mm to 15.0 mm, for example, about 9.2 mm. The dimension T (thickness dimension) of the base 10 in the Z direction can be 0.5 mm to 3.0 mm, for example, about 1.9 mm. However, the dimensions W and T of the base 10 are not limited to those exemplified, and can be appropriately changed according to the dimensions of the recess of the socket 101 into which the base 10 is inserted.

[0014] The base 10 is made of an insulating material. The base 10 is made of, for example, an inorganic material such as ceramics (e.g., aluminum oxide or aluminum nitride), or an organic material (e.g., paper phenol, glass epoxy, resin, etc.). The base 10 may also be a metal core substrate in which the surface of a metal plate is covered with an insulating material.

[0015] Heat generated in the light emitting element 21 is transferred to the base 10 and released from the base 10 to the socket 101, etc. Therefore, in consideration of suppressing the temperature rise of the light emitting element 21, it is preferable to form the base 10 using a material with high thermal conductivity. Examples of materials with high thermal conductivity include ceramics such as aluminum oxide and aluminum nitride, highly thermally conductive resins, and metal core substrates. Highly thermally conductive resins are, for example, resins such as PET (Polyethylene terephthalate) and nylon mixed with fillers using aluminum oxide, carbon, etc.

[0016] A wiring pattern 10a1 may be provided on one surface 10a of the base 10. The wiring pattern 10a1 is made of a low-resistance metal such as copper, aluminum, or silver. The wiring pattern 10a1 has, for example, a pad 10a1a and a terminal 10a1b (corresponding to an example of a first terminal).

[0017] A light emitting element 21 and a circuit element 22 that constitute a light emitting circuit 20 are electrically connected to the pad 10a1a. The terminals 10a1b may be provided as a pair. The pair of terminals 10a1b are provided near one end (corresponding to an example of a second end) of the base 10 in the X direction. When the base 10 is attached to the socket 101, each of the pair of terminals 10a1b contacts the socket terminals 101a and 101b provided in the socket 101 (see FIG. 6). For example, by bringing one socket terminal 101a provided in the socket 101 into contact with one terminal 10a1b, the one socket terminal 101a is electrically connected to an electrode of one polarity of the light-emitting element 21. For example, by bringing the other socket terminal 101a into contact with the other terminal 10a1b, the other socket terminal 101a is electrically connected to an electrode of the other polarity of the light-emitting element 21.

[0018] Terminal 10a1b may also be provided on the other surface 10b of base 10. Terminal 10a1b provided on surface 10b may be provided at a position facing terminal 10a1b provided on surface 10a. Terminal 10a1b provided on surface 10b is electrically connected to terminal 10a1b provided on surface 10a, for example, via a conductive via. If terminal 10a1b is also provided on surface 10b, the reliability of the electrical connection between socket terminals 101a, 101b provided on socket 101 and wiring pattern 10a1 can be improved.

[0019] As shown in FIG. 1 and FIG. 2, at least one of the surfaces 10a and 10b may have a protruding portion 10c. In the X direction, the protruding portion 10c may be provided between the terminal 10a1b and the end of the base portion 10. For example, one protruding portion 10c may be provided for each terminal 10a1b. In this case, the protruding portion 10c may be connected to the opposing terminal 10a1b or may be separated from the opposing terminal 10a1b. The dimension (thickness) of the protruding portion 10c in the Z direction may be larger than the dimension (thickness) of the terminal 10a1b. If the protruding portion 10c is provided, it is possible to prevent the vehicle lighting device 1 from falling off the socket 101 due to vibrations caused by driving (see FIG. 6).

[0020] The light emitting circuit 20 includes, for example, a light emitting element 21 and a circuit element 22 . At least one light emitting element 21 may be provided. In the X direction, the light emitting element 21 is provided on the end (corresponding to an example of the second end) side of the base 10 opposite the end on the side where the pair of terminals 10a1b are provided. In consideration of replacement with a wedge base bulb, it is preferable that the distance in the X direction between the center of the light emitting element 21 and the center of the terminal 10a1b is approximately the same as the distance between the center of the filament of the wedge base bulb and the center of the terminal.

[0021] The light emitting element 21 is, for example, a light emitting diode, an organic light emitting diode, a laser diode, or the like. There is no particular limitation on the form of the light emitting element 21. The light emitting element 21 can be, for example, a surface mount type light emitting element such as a PLCC (Plastic Leaded Chip Carrier) type, a light emitting element having a lead wire such as a bullet type, or a chip type light emitting element. In this case, in consideration of miniaturization of the vehicle lighting device 1, it is preferable that the light emitting element 21 is a surface mount type light emitting element or a chip type light emitting element. The light emitting element 21 illustrated in Figs. 1 to 4 is a surface mount type light emitting element.

[0022] When the light emitting element 21 is a surface mount type light emitting element, a terminal of the light emitting element 21 is electrically connected to a pad 10a1a of the wiring pattern 10a1.

[0023] When the light emitting element 21 is a chip-shaped light emitting element, the light emitting element 21 is electrically connected to the pad 10a1a of the wiring pattern 10a1 by COB (Chip On Board). The chip-shaped light emitting element may be any of an upper electrode type light emitting element, an upper and lower electrode type light emitting element, and a flip chip type light emitting element. When the light emitting element 21 is a chip-shaped light emitting element, a frame-shaped member surrounding the light emitting element 21 and a sealing part provided inside the frame-shaped member and covering the light emitting element 21 can be provided on the surface 10a of the base 10. The sealing part can contain a phosphor. The type of phosphor can be appropriately changed so as to obtain a desired emission color depending on the application of the vehicle lighting device 1.

[0024] The light emission surface of the light emitting element 21 may be substantially parallel to the surface 10a of the base 10. For example, the light emitting element 21 mainly emits light in a direction perpendicular to the surface 10a of the base 10. The number, size, arrangement, etc. of the light-emitting elements 21 are not limited to those exemplified, and can be appropriately changed depending on the size and use of the vehicle lighting device 1. When a plurality of light-emitting elements 21 are provided, the plurality of light-emitting elements 21 can be connected in series.

[0025] The circuit element 22 is a passive element or an active element used to configure the light-emitting circuit 20 having the light-emitting element 21. A terminal of the circuit element 22 is electrically connected to the pad 10a1a of the wiring pattern 10a1. Therefore, the circuit element 22 is electrically connected to the light-emitting element 21 via the wiring pattern 10a1.

[0026] Here, after the vehicle lighting device 1 is mounted in the socket 101 of the vehicle lamp 100, a cover 103 may be placed over the portion of the vehicle lighting device 1 exposed from the socket 101 (see FIG. 6). Furthermore, there are cases where the portion of the vehicle lighting device 1 that is exposed from the socket 101 is inserted inside the housing 104 of the vehicle lamp 100 (see FIG. 7). In this case, if the circuit element 22 is provided in a region between the end of the base 10 opposite to the terminal 10a1b side and the end of the light-emitting element 21 opposite to the terminal 10a1b side, the cover 103 and the circuit element 22 tend to interfere with each other when the cover 103 is placed on the vehicle lighting device 1. In addition, the housing 104 and the circuit element 22 tend to interfere with each other when the vehicle lighting device 1 is inserted into the housing 104. If the cover 103 and the circuit element 22 interfere with each other or if the housing 104 and the circuit element 22 interfere with each other, the circuit element 22 may fall off or an electrical connection between the circuit element 22 and the pad 10a1a may not be established.

[0027] Therefore, it is preferable that the circuit element 22 is not provided in the region between the end of the base 10 opposite the terminal 10a1b side and the end of the light emitting element 21 opposite the terminal 10a1b side.

[0028] 2, the circuit element 22 can be provided in a region between the end of the light-emitting element 21 opposite to the terminal 10a1b side and the end of the terminal 10a1b on the light-emitting element 21 side. In this way, the light-emitting element 21, which has a large bonding strength, acts as a guard, so that it is possible to prevent the cover 103 and the housing 104 from interfering with the circuit element 22.

[0029] In addition, the region between the end of the base 10 opposite to the terminal 10a1b side and the end of the light-emitting element 21 opposite to the terminal 10a1b side can be an area that an operator holds when mounting the vehicle lighting device 1 to the socket 101. This region can also be an area that dissipates heat from the light-emitting element 21. Therefore, it is preferable that this region is large. However, if this region is made too large, it may be difficult to attach the cover 103 or the cover 103 may become large. Therefore, as shown in FIG. 2, it is preferable that the distance L between the end of the light-emitting element 21 opposite to the terminal 10a1b side and the end of the base 10 opposite to the terminal 10a1b side in the X direction is larger than the outer dimension L1 of the light-emitting element 21 and smaller than twice the outer dimension L1 of the light-emitting element 21.

[0030] As shown in Figs. 1 to 4, the circuit element 22 may be, for example, a capacitor 22a, a resistor 22b (corresponding to an example of a second circuit element), and a diode 22c (corresponding to an example of a first circuit element). However, the type of the circuit element 22 is not limited to the exemplified ones, and may be appropriately changed according to the configuration of the light-emitting circuit 20. For example, the circuit element 22 may be a positive characteristic thermistor, a negative characteristic thermistor, an inductor, a surge absorber, a varistor, a transistor, an integrated circuit, a calculation element, or the like, in addition to the above-mentioned ones. The integrated circuit may include, for example, at least one of a flashing circuit, a constant current circuit, and a lighting circuit (drive circuit).

[0031] The capacitor 22a can be provided, for example, as a measure against noise or a measure against electrostatic breakdown of the light-emitting element 21. Therefore, it is preferable that the capacitor 22a is provided near the light-emitting element 21. For example, as shown in FIG. 1 and FIG. 2, the capacitor 22a can be provided in a region between the end of the light-emitting element 21 on the terminal 10a1b side and the end of the light-emitting element 21 on the opposite side to the terminal 10a1b side in the X direction. If the capacitor 22a is provided in such a region, the distance between the capacitor 22a and the light-emitting element 21 can be reduced, making it easier to protect the light-emitting element 21. Also, as shown in FIG. 1 and FIG. 2, the height of the capacitor 22a is lower than the height of the light-emitting element 21. Therefore, if the capacitor 22a is provided in such a region, it is possible to suppress interference between the cover 103 and the capacitor 22a.

[0032] Capacitor 22a can be, for example, a chip capacitor or a surface mount capacitor. In this case, if capacitor 22a is a chip capacitor, the mounting area can be reduced, making it easier to match dimension W of base 10 to the width dimension of the portion where the leads of the wedge base bulb are provided.

[0033] The resistor 22b can be provided, for example, on the base 10 on the side of the diode 22c opposite to the terminal 10a1b side. The resistor 22b may be, for example, a surface mount resistor, a chip resistor, a resistor with leads (metal oxide film resistor), a film resistor formed by using a screen printing method, etc. The resistor 22b illustrated in Fig. 1 and Fig. 2 is a surface mount resistor.

[0034] The dimension of resistor 22b in the X direction can be shorter than the dimension of resistor 22b in the Y direction. In this case, terminals can be provided at the ends of resistor 22b in the X direction. One terminal (corresponding to an example of the fourth terminal) is electrically connected to the terminal of diode 22c. The other terminal (corresponding to an example of the fifth terminal) is electrically connected to light-emitting element 21.

[0035] For example, resistor 22b can be a resistor with long side electrodes. A resistor with long side electrodes has higher heat dissipation than a rectangular resistor. Therefore, it can be made smaller than a rectangular resistor with the same rated power. As a result, if resistor 22b is a resistor with long side electrodes, the mounting area can be reduced, making it easier to match the dimension W of base 10 to the width dimension of the portion where the leads of the wedge base light bulb are provided.

[0036] Here, since there is variation in the forward voltage characteristics of the light-emitting element 21, when the voltage applied between the anode terminal and the ground terminal is constant, variation occurs in the brightness (luminous flux, luminance, luminous intensity, illuminance) of the light irradiated from the light-emitting element 21. Therefore, the value of the current flowing through the light-emitting element 21 can be set within a predetermined range by the resistor 22b so that the brightness of the light irradiated from the light-emitting element 21 falls within a predetermined range. In this case, by changing the resistance value of the resistor 22b connected in series with the light-emitting element 21, the value of the current flowing through the light-emitting element 21 can be set within the predetermined range.

[0037] For example, when the resistor 22b is a surface mount resistor, a chip resistor, a resistor with leads, or the like, the resistor 22b having an appropriate resistance value is selected according to the forward voltage characteristics of the light emitting element 21. Also, for example, when the resistor 22b is a film resistor, the resistance value can be increased by removing a part of the resistor 22b.

[0038] The resistor 22b can also have the further function of preventing an excessive current from flowing through the light emitting element 21. The number, size, etc. of the resistors 22b are not limited to those exemplified above, and can be changed as appropriate according to the number and specifications of the light emitting elements 21.

[0039] 1 and 2, diode 22c is provided near terminal 10a1b, on the opposite side of terminal 10a1b to the end side of base 10. For example, terminal 10a1b, diode 22c, and resistor 22b can be provided side by side in the X direction.

[0040] The diode 22c has a terminal (corresponding to an example of a second terminal) electrically connected to the light-emitting element 21, and a terminal (corresponding to an example of a third terminal) electrically connected to the terminal 10a1b. These terminals are provided at the ends of the diode 22c in a direction intersecting with the X-direction. The direction intersecting the X direction can be, for example, a direction perpendicular to the X direction (Y direction), or a direction shifted from the Y direction to the X direction (for example, within 30°). Diode 22c may be, for example, a surface-mounted diode.

[0041] Here, since the wedge base light bulb is an incandescent light bulb, one of the pair of leads can be electrically connected to the positive side of a power source, and the other lead can be electrically connected to the negative side of the power source. In other words, the wedge base light bulb has no polarity. In contrast, the light emitting element 21, such as a light emitting diode, has polarity. Therefore, a diode can be provided to prevent a reverse voltage from being applied to the light emitting element 21.

[0042] Furthermore, in consideration of replacing a wedge base bulb, it is preferable to provide a non-polar circuit in the vehicle lighting device 1. If the vehicle lighting device 1 is provided with a non-polar circuit, there will be no directionality in mounting the device to the socket 101, as with a wedge base bulb. This makes it easier to mount the vehicle lighting device 1.

[0043] For example, if a bridge circuit (bridge diode) is configured using four diodes, a non-polar circuit can be provided in the vehicle lighting device 1. The diode 22c illustrated in Figs. 1 and 2 is a so-called two-element diode. If the diode 22c is a two-element diode, a bridge circuit can be configured using two diodes 22c, so that the mounting area can be reduced. Therefore, it is easy to match the dimension W of the base 10 to the width dimension of the portion where the leads of the wedge base bulb are provided. Furthermore, if the diode 22c is provided near the terminal 10a1b, it becomes easy to configure a non-polarized circuit. If the diode 22c is a two-element diode, the dimension of the diode 22c in the X direction can be made longer than the dimension in the Y direction.

[0044] In the above, the case where the circuit element 22 is provided on the surface 10a of the base 10 has been exemplified, but at least a part of the circuit element 22 can also be provided on the surface 10b of the base 10. In this case, a wiring pattern may be provided on the surface 10b of the base 10, and at least a part of the circuit element 22 may be electrically connected to the wiring pattern. Also, a conductive via may be provided penetrating the base 10 in the thickness direction, and the conductive via may electrically connect the wiring pattern 10a1 provided on the surface 10a and the wiring pattern provided on the surface 10b.

[0045] Here, when the vehicle lighting device 1 is attached to the socket 101, the socket terminals 101a and 101b provided on the socket 101 come into contact with the terminal 10a1b provided on the base 10 (see FIG. 6). As described above, since the circuit element 22 is provided near the terminal 10a1b, when the socket terminals 101a and 101b come into contact with the terminal 10a1b, there is a risk that the socket terminals 101a and 101b may also come into contact with the terminal of the circuit element 22. If such a short circuit occurs, there is a risk that the circuit element 22 may malfunction or break down.

[0046] Therefore, it is preferable that the terminal of circuit element 22 provided closest to terminal 10a1b in the X direction is provided at an end of circuit element 22 in a direction intersecting the X direction (for example, the Y direction).

[0047] As described above, the circuit element 22 provided closest to the terminal 10a1b in the X direction can be, for example, the diode 22c. In this case, for example, as shown in FIG. 1 and FIG. 2, the terminal 22c1 can be provided at the end of the diode 22c in the Y direction. As shown in FIG. 3, the terminal 22c1 is provided near the end of the diode 22c on the base 10 side in the Z direction. Therefore, if the terminal 22c1 is provided at the end of the diode 22c in the Y direction, even if the diode 22c is provided near the terminal 10a1b, it is possible to prevent the terminal 22c1 from contacting the socket terminals 101a and 101b. As a result, it is possible to prevent the vehicle lighting device 1 attached to the socket 101 from malfunctioning or breaking down.

[0048] Although the case has been described in which the circuit element 22 provided closest to the terminal 10a1b in the X direction is the diode 22c, the same can be applied to the case in which the circuit element 22 provided closest to the terminal 10a1b is the resistor 22b or other circuit elements 22. Furthermore, the terminals of the circuit element 22 provided on the surface 10a of the base 10 have been described, but the same can be applied to the terminals of the circuit element 22 provided on the surface 10b of the base 10.

[0049] In addition, the position of the terminal of the other circuit element 22 provided in the region between the circuit element 22 provided closest to the terminal 10a1b and the light emitting element 21 in the X direction is not particularly limited. For example, as shown in Figs. 1 and 2, a diode 22c is provided between the resistor 22b and the terminal 10a1b. Therefore, the diode 22c acts as a guard, and it is possible to prevent the socket terminals 101a, 101b from contacting the terminal 22b1 of the resistor 22b. In this case, as shown in Figs. 1 and 2, the terminal 22b1 of the resistor 22b may be provided at the end of the resistor 22b in the X direction.

[0050] 5 is a schematic perspective view illustrating a vehicle lighting device 1a according to another embodiment. As shown in FIG. 5, the vehicle lighting device 1a includes a base 11 and a light-emitting circuit 20, for example.

[0051] The base 11 has, for example, a portion 11a and a portion 11b. The portion 11a is plate-shaped and has the same configuration as the base 10 described above. However, the light-emitting element 21 and the capacitor 22a are not provided in the portion 11a. The light-emitting element 21 and the capacitor 22a are provided on one end side of the base 11. For example, the light-emitting element 21 and the capacitor 22a are provided on the surface of the portion 11b opposite to the portion 11a side.

[0052] The portion 11b is plate-shaped and is provided at the end of the portion 11a opposite to the end where the terminal 10a1b is provided. That is, the base 10 described above is a plate-shaped body, but the base 11 has a three-dimensional structure such as a T-shape. The material of the portion 11a and the material of the portion 11b may be the same as the material of the base 10 described above.

[0053] As in the above-described vehicle lighting device 1, the terminal of the circuit element 22 provided closest to the terminal 10a1b in the X direction can be provided at the end of the circuit element 22 in the direction intersecting the X direction. For example, as shown in FIG. 5, when the circuit element 22 provided closest to the terminal 10a1b in the X direction is a diode 22c, the terminal 22c1 can be provided at the end of the diode 22c in the Y direction. In this way, as in the above-described vehicle lighting device 1, it is possible to prevent the terminal 22c1 from coming into contact with the socket terminals 101a and 101b. Therefore, it is possible to prevent the vehicle lighting device 1a attached to the socket 101 from malfunctioning or breaking down.

[0054] Although the case has been described in which the circuit element 22 provided closest to terminal 10a1b in the X direction is diode 22c, the same can be applied to the case in which the circuit element 22 provided closest to terminal 10a1b is resistor 22b or other circuit element 22. Furthermore, the terminal of circuit element 22 provided on one surface 11a1 of portion 11a has been described, but the same can be applied to the terminal of circuit element 22 provided on surface 11a2 opposite surface 11a1.

[0055] Furthermore, there is no particular limitation on the position of the terminal of another circuit element 22 provided in the region between the circuit element 22 provided closest to the terminal 10a1b and the light-emitting element 21 in the X direction. For example, as shown in Fig. 5, a diode 22c is provided between the resistor 22b and the terminal 10a1b. Therefore, the diode 22c acts as a guard, and it is possible to prevent the socket terminals 101a, 101b from contacting the terminal 22b1 of the resistor 22b. In this case, as shown in Fig. 5, the terminal 22b1 of the resistor 22b may be provided at the end of the resistor 22b in the X direction.

[0056] (Vehicle lighting fixture 100) FIG. 6 is a schematic diagram illustrating a vehicle lamp 100 according to the present embodiment. In the following, as an example, a case where one vehicle lighting device 1 is provided will be described, but it is sufficient that at least one vehicle lighting device 1 is provided. Also, at least one vehicle lighting device 1a may be provided. As shown in FIG. 6, the vehicle lamp 100 may be provided with the vehicle lighting device 1, a socket 101, wiring 102, and a cover 103.

[0057] The socket 101 has a space therein into which the base 10 provided on the vehicle lighting device 1 is inserted. The socket 101 may be, for example, a cylinder with one end open. However, the shape and size of the socket 101 are not limited to those exemplified, and may be changed as appropriate depending on the application and size of the vehicle lamp 100. The socket 101 can be made of, for example, an insulating material, such as urea resin.

[0058] A pair of socket terminals 101a, 101b are provided in a space of the socket 101 into which the base 10 is inserted. The pair of socket terminals 101a, 101b are arranged, for example, side by side in the Y direction. For example, a positive voltage is applied to the socket terminal 101a via a wiring 102. For example, a negative voltage is applied to the socket terminal 101b via a wiring 102. The socket terminals 101a, 101b are formed from a material having electrical conductivity and elasticity. The socket terminals 101a, 101b can be formed, for example, from a copper alloy such as beryllium copper.

[0059] One end of the wiring 102 is electrically connected to the socket terminals 101a and 101b. The other end of the wiring 102 is electrically connected to a lighting circuit or the like provided outside the vehicle lamp 100. Note that the wiring 102 is not necessarily required. For example, the socket terminals 101a and 101b may be exposed on an end face or an outer surface of the socket 101, and the socket terminals 101a and 101b may be electrically connected to a connection terminal provided on the vehicle.

[0060] When the base 10 is inserted into the socket 101, the base 10 is sandwiched between the socket terminals 101a and 101b. Therefore, the vehicle lighting device 1 is held in the socket 101. In addition, the socket terminals 101a and 101b are electrically connected to the terminal 10a1b of the base 10. Therefore, a lighting circuit or the like provided outside the vehicle lamp 100 can be electrically connected to the light-emitting circuit 20 of the vehicle lighting device 1. Note that, as described above, as long as the vehicle lighting device 1 is provided with a non-polarized circuit, the mounting direction of the vehicle lighting device 1 (base 10) in the Z direction is not limited.

[0061] The cover 103 covers a portion of the vehicle lighting device 1 that is exposed from the socket 101. The cover 103 may have a function such as a lens, or may suppress glare. The cover 103 may be detachably provided on the socket 101. The cover 103 may also be provided with an optical element such as a reflector.

[0062] FIG. 7 is a schematic diagram illustrating a vehicle lamp 100a according to another embodiment. As shown in FIG. 7, a vehicle lamp 100a may be provided with a vehicle lighting device 1, a socket 101, wiring 102, a housing 104, and an optical element 105.

[0063] The housing 104 has a space 104a therein. One end of the housing 104 is provided with a hole 104b that is connected to the space 104a. The part of the vehicle lighting device 1 that is exposed from the socket 101 is inserted into the space 104a through the hole 104b. In this case, the socket 101 to which the vehicle lighting device 1 is attached can be detachably attached to the housing 104. For example, a claw 104c provided on the housing 104 can be hooked onto a protrusion or the like provided on the socket 101. The housing 104 can be formed from, for example, a resin that does not transmit light.

[0064] The optical element 105 can be provided, for example, on a surface of the housing 104 that intersects with the end portion where the hole 104b is provided. The optical element 105 can be, for example, plate-shaped and can be adhered to the housing 104, or can be attached to the housing 104 using a screw or the like, or can be provided integrally with the housing 104, or can be detachably attached to the housing 104. The optical element 105 faces the light-emitting element 21 provided in the vehicle lighting device 1. Light emitted from the light-emitting element 21 is irradiated to the outside of the vehicle lamp 100a through the optical element 105. The optical element 105 can have, for example, a function such as a lens, or can suppress glare. The optical element 105 may be transparent or colored. The optical element 105 can be formed, for example, from a resin or glass that transmits light. When the optical element 105 is formed from a resin, it can be molded integrally with the housing 104 using, for example, a two-color molding method. When the optical element 105 is made of glass, it can be molded integrally with the housing 104 by, for example, insert molding.

[0065] Although some embodiments of the present invention have been illustrated above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, modifications, etc. can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims. In addition, the above-mentioned embodiments can be implemented in combination with each other.

[0066] Below, additional notes regarding the above-described embodiment are given.

[0067] (Appendix 1) With the base; a light emitting element provided on a first end side of the base in a first direction; a first terminal provided near a second end of the base opposite the first end in the first direction; a first circuit element including: a second terminal provided in the base portion near the first terminal and on a side of the first terminal opposite the first end side, the second terminal being electrically connected to the light emitting element; and a third terminal being electrically connected to the first terminal; Equipped with The second terminal and the third terminal are provided at ends of the first circuit element in a second direction intersecting the first direction.

[0068] (Appendix 2) 2. The vehicle lighting device according to claim 1, wherein the first circuit element has a dimension in the first direction that is longer than a dimension in the second direction.

[0069] (Appendix 3) a second circuit element is provided on the base portion on a side opposite to the first terminal side of the first circuit element, the second circuit element having a fourth terminal electrically connected to the second terminal of the first circuit element; and a fifth terminal electrically connected to the light emitting element; the fourth terminal and the fifth terminal are provided at an end of the second circuit element in the first direction, 3. The vehicle lighting device according to claim 1, wherein a dimension of the second circuit element in the first direction is shorter than a dimension of the second circuit element in the second direction.

[0070] (Appendix 4) the first terminal, the first circuit element, and the second circuit element are arranged side by side in the first direction; the first circuit element is a diode; 4. The vehicle lighting device according to claim 3, wherein the second circuit element is a resistor.

[0071] (Appendix 5) A vehicle lighting device according to any one of appendix 1 to 4; A socket into which a base provided on the vehicle lighting device is inserted; a socket terminal provided in the socket and electrically connected to a first terminal provided in the base; A vehicle lamp equipped with: [Explanation of symbols]

[0072] 1 Vehicle lighting device, 1a Vehicle lighting device, 10 Base, 10a Surface, 10a1b Terminal, 10b Surface, 11 Base, 11a Part, 11b Part, 20 Light emitting circuit, 21 Light emitting element, 22 Circuit element, 22a Capacitor, 22b Resistor, 22b1 Terminal, 22c Diode, 22c1 Terminal, 100 Vehicle lamp, 101 Socket, 101a Socket terminal, 101b Socket terminal

Claims

1. The base and; a light emitting element provided on a first end side of the base in a first direction; a first terminal provided near a second end of the base opposite the first end in the first direction; a first circuit element including: a second terminal provided in the base portion near the first terminal and on an opposite side of the first terminal from the first end side, the second terminal being electrically connected to the light emitting element; and a third terminal being electrically connected to the first terminal; Equipped with The second terminal and the third terminal are provided at ends of the first circuit element in a second direction intersecting the first direction.

2. The vehicle lighting device according to claim 1 , wherein the first circuit element has a dimension in the first direction longer than a dimension in the second direction.

3. a second circuit element provided on the base portion on a side opposite to the first terminal side of the first circuit element, the second circuit element having a fourth terminal electrically connected to the second terminal of the first circuit element; and a fifth terminal electrically connected to the light emitting element; the fourth terminal and the fifth terminal are provided at ends of the second circuit element in the first direction, 3. The vehicle lighting device according to claim 1, wherein the second circuit element has a dimension in the first direction that is shorter than a dimension in the second direction.

4. the first terminal, the first circuit element, and the second circuit element are arranged side by side in the first direction; the first circuit element is a diode; 4. The vehicle lighting device according to claim 3, wherein the second circuit element is a resistor.

5. The vehicle lighting device according to claim 1; A socket into which a base provided on the vehicle lighting device is inserted; a socket terminal provided on the socket and electrically connected to a first terminal provided on the base; A vehicle lamp equipped with:

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