JP4567611B2 - LED lamps for automotive interior lights - Google Patents

Description

  The present invention relates to a room light having a power feeding part configured to be detachable from a mounting base for an incandescent lamp of a room light arranged on an indoor ceiling part of an automobile, and a light emitting part having a plurality of LEDs fixed on a base. is there.

  In an LED indoor lamp having a power feeding portion that is detachably attached to a mounting base for an incandescent light bulb of a conventional indoor lamp disposed on a ceiling of a conventional automobile, a positive terminal and a negative side that are detachable from the mounting base 2. Description of the Related Art There is known an automotive interior lamp LED lamp that has a power supply connection portion composed of terminals and has a light emitting portion made of an LED disposed between the power supply connection portions.

  However, the above-mentioned LED lamps for automotive interior lights are limited in that the location of the LEDs is limited between a plus side terminal and a minus side terminal configured to be detachable from a mounting base for the incandescent bulb of the room light. The number of available lights is limited, and the amount of light is insufficient to read road maps and the like at night.

In order to solve the above problems, an LED lamp for an automotive interior light in which a plurality of LEDs are arranged on a substrate so as to match the internal shape of the interior light of the car is conceivable. Even if the interior shape of the interior light is different, the position of the power feeding unit is different, so for each vehicle type, LED lamps for automotive interior lighting with different LED arrangement shapes and power feeding unit positions are prepared. It was necessary to do so, and the versatility was low, and the increase in cost and product inventory was inevitable.
JP 2003-174198 A

  The present invention has been made to eliminate the above-described drawbacks, and ensures an amount of light capable of reading a road map and the like at night by an indoor lamp disposed on the interior ceiling of the automobile, and for each vehicle type. An object of the present invention is to provide a highly versatile LED lamp for indoor lighting corresponding to the difference in the internal shape of the indoor lighting and the position of the mounting base.

  The LED lamp for an interior lamp of an automobile according to the present invention includes a power supply section configured to be detachable from a mounting base for an incandescent bulb installed in an existing interior lamp of an automobile, and a light emitting section in which a plurality of LEDs are fixed on a substrate And a base member for holding the light emitting part, and a connecting means for fixing the power feeding part and the base member so that their positions can be relatively adjusted.

  In addition, in the LED lamp for an automotive interior light according to the present invention, the relative position adjustment between the power supply unit and the base member is performed in the horizontal and vertical directions and the rotational movement with respect to the vertical axis in the mounted state on the vehicle. It is good to include.

Furthermore, in the LED lamp for automotive interior lamps of the present invention, the horizontal direction area of the base member when mounted on the vehicle is 1600 mm ² or less, and the vertical thickness of the base member is 7 mm or less. good.

  The plurality of LEDs are composed of at least nine LEDs, and the illuminance measured at a position 30 cm directly below the tip from the light emitting portion when the current is supplied in the dark room under the conditions of a voltage of 12 V and a current of 75 mA is 86 Lx. It is good to be above.

  Since the LED lamp for automotive interior lamps of the present invention is composed of a power feeding part and a light emitting part separately, the arrangement position of the LEDs is not limited between the terminals of the power feeding part, and the existing automotive interior light The amount of light that can be used to read road maps and the like at night can be secured by effectively using the interior space of the vehicle. Furthermore, since it has a connection means for fixing the power feeding unit and the base member so that the position can be relatively adjusted, it can be used in accordance with the difference in the interior shape of the interior lamp and the position of the mounting base for each vehicle type. We can provide a high room light. In addition, since the power supply unit and the base member are connected by the connecting means, the base member is also fixed to the vehicle by mounting the power supply unit on the mounting base of the interior lamp of the vehicle, and the base member alone Fixing the interior of the interior light is unnecessary or can be simplified to the minimum necessary.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 3, the LED lamp for an automotive interior light of the present invention is configured to be attachable to and detachable from a mounting base for an incandescent light bulb of the standard “T10-31” installed in an indoor automotive interior light. A light-emitting unit 6 having a pair of positive and negative terminals 1 and a power supply unit 3 in which an electronic substrate 2 is disposed between the terminals, and a plurality of LEDs 4 fixed on the substrate 5, and the light-emitting unit 6 has a base member 7 (consisting of a main body 7a and a frame member 7b in this embodiment). Since the power supplied from the pair of terminals 1 on the plus side and the minus side is configured to be supplied to each LED 4 through the electronic substrate 2 by the feeder line 8, the minus terminal and the minus side are arranged. There is an advantage that the degree of freedom of design of the lighting control circuit for controlling the light emission of the LED 4 by effectively utilizing the space between the side terminals is increased.

  By the way, the inventor conducted an experiment shown in Table 1 using an LED (product number E5PW1-51ASW-00) manufactured by Tottori Sanyo Electric Co., Ltd. It was found that the illuminance measured at a position 30 cm directly below the tip from the light emitting portion when the voltage was 12 V and the current was 75 mA was 86 Lx or more, and the number of LEDs was 9 or more. In addition, in order to read the map more comfortably, the illuminance measured at a position 30 cm directly below the tip from the light emitting part when energized under the conditions of a voltage of 12 V and a current of 100 mA in the above experiment is 103 Lx or more and the quantity of LEDs. It became clear that it was 12 or more. The LED used in the actual product is the LED manufactured by Tottori Sanyo Electric Co., Ltd. (product number E5PW1-51ASW-00) used in the above-described experiment.

Furthermore, as a result of investigating the domestic dimensions of domestic automobiles released in the past five years, the interior dimensions of about 80% of the interior lights and the position of the power feeding section, the inventor found that the base member 7 The vertical dimension X and the horizontal dimension Y are each 40 mm or less, the horizontal plane area (X × Y) is 1600 mm ² or less, and the thickness T of the base member 7 (when the LED is exposed from the base member) It was derived that it was necessary to make the exposed area of the LED (including the dimension of the exposed portion) 7 mm or less.

  Further, the position of the power supply unit 3 with respect to the base member 7 varies depending on the vehicle type, and in order to have versatility, a structure in which fixing means capable of adjusting the position is provided between the power supply unit 3 and the base member 7 has been devised.

Therefore, in the present embodiment, three planar LEDs (four in the horizontal direction and four in the horizontal direction) (total number: E5PW1-51ASW-00 manufactured by Tottori Sanyo Electric Co., Ltd.) are used, and the vertical direction of the base member is used. Dimension X = 30 mm, lateral dimension Y = 38 mm, horizontal area 1140 mm ² , and base member (including LED) thickness T = 6.2 mm.

  4-7, a plurality of holes 10 are provided in the bottom surface 9 of the main body of the base member 7, and the protrusion 11 provided on the bottom of the power feeding unit 3 and the position and direction can be inserted freely. Because of this structure, the power feeding section 3 can be adjusted relative to the base member 7 including horizontal and vertical movements and rotational movement with respect to the vertical axis. More preferably, the inner diameter of the hole 10 and the outer diameter of the protruding portion 11 are set appropriately so that the base member 7 and the power feeding portion 3 are not easily detached and fitted. Further, in order to efficiently dissipate the heat generated by the LED 4 and at the same time to obtain a sufficient insertion stroke of the protrusion 11 provided at the bottom of the power supply unit 3, the base member 5 has a base 5 coaxial with the hole 10 on the bottom surface 9 of the main body. A hole 12 capable of receiving the protrusion 11 is provided. A plurality of holes 10 provided in the bottom surface 9 of the main body of the base member 7 are provided with small-diameter holes 13 for heat dissipation separately from the holes 10 for fitting with the protrusions 11.

  The protrusion fitting hole 10 does not necessarily have to pass through the hole, and may be a recess that can be fitted with the protrusion 11. Further, a plurality of protrusions may be provided on the bottom surface 9 of the main body of the base member 7 and a hole may be provided at the bottom of the power feeding portion 3 (not shown). Furthermore, it is only necessary that the base member 7 and the power feeding portion 3 can be fixed so as to be position-adjustable using existing engaging means other than the combination of the hole and the protrusion. In addition, the bottom part of the power feeding part 3 and the base member 7 are prevented so that the hole 10 in the bottom surface 9 of the main body of the base member 7 does not come off from the protruding part 11 of the bottom part of the power feeding part 3 due to vibration or the like during traveling of the automobile. An adhering means made of a double-sided adhesive tape is preferably disposed between the bottom surfaces 9 of the main body. The fixing means may use a hook-and-loop fastener instead of the double-sided tape. When these fixing means are used, it is not necessary to provide a hole in the bottom part of the power feeding part and the bottom face of the main body of the base member.

  Furthermore, as a result of the inventor's investigation of the interior dimensions of the indoor lamp of the domestic automobile and the position of the power feeding unit, the position of the power feeding unit (the position where the incandescent lamp T10 × 31 was fixed) is higher than the space position inside the room light. The spacer 14 can be adjusted in the vertical direction between the power feeding unit 3 and the bottom surface 9 of the main body of the base member 7 in order to be suitable for each type of room light. I came up with a structure to provide In the case of this structure, the spacer 14 is used when the position of the power feeding unit (the position where the incandescent lamp T10 × 31 is fixed) is separated upward with respect to the space position inside the room lamp. It is possible to supply LED lamps for automobile interior lights with high height.

  In this embodiment, as shown in FIGS. 8 and 9, a hole 15 is provided on one surface 14 a of the spacer 14 so as to be engaged with the protrusion 11 on the bottom of the power feeding portion 3, and the other surface 14 b of the spacer 14 is formed on the other surface 14 b. Protrusions 16 that can be selectively engaged with the plurality of holes 10 provided on the bottom surface 9 of the base member 7 are provided. The spacer 14 may use a sponge-like shrinkable material, and the fixing method may be an existing fixing means such as a double-sided tape or a hook-and-loop fastener.

  As another embodiment of the present invention, as shown in FIG. 10, the power feeding portion 3 and the base member 7 may be fixed at appropriate positions with a double-sided tape 17 (or a hook-and-loop fastener).

  Furthermore, as shown in FIG. 11 as another embodiment of the present invention, a plurality of screw holes 18 are opened in the base member 7 and the power feeding unit 3 and the base member 7 are fixed at appropriate positions by screws 19. good.

  Furthermore, as shown in FIG. 12, as another embodiment of the present invention, the ground terminal 20 can be taken out from the electronic board 2 in the power feeding section 3 and control such as blinking lighting and afterglow off can be performed on the electronic board.

It is a top view which shows 1st Example of this invention. It is a side view which shows 1st Example of this invention. It is a reference sectional view in the 1st example of the present invention. It is a reference figure showing the state of the main part bottom of a base member in the 1st example of the present invention. It is a reference figure showing the example of connection of a base member and a power feeding part in the 1st example of the present invention. It is a reference figure showing the example of connection of a base member and a power feeding part in the 1st example of the present invention. It is a reference figure showing the example of connection of a base member and a power feeding part in the 1st example of the present invention. It is a side view which shows 2nd Example of this invention. It is a reference sectional view in the 2nd example of the present invention. It is a side view which shows 3rd Example of this invention. It is a side view which shows 4th Example of this invention. It is a side view which shows 5th Example of this invention.

Explanation of symbols

1 Terminal 2 Electronic board 3 Feeding unit 4 LED
DESCRIPTION OF SYMBOLS 5 Board | substrate 6 Light emission part 7 Base member 7a Main body 7b Frame member 8 Feed line 9 Main body bottom face 10 Hole 11 Protrusion part 12 Hole 13 Small diameter hole 14 Spacer 14a One side 14b The other side 15 Hole 16 Protrusion part 17 Double-sided tape 18 Screw Hole 19 Screw 20 Ground terminal

Claims (4)

  A power feeding unit configured to be detachable from a mounting base for an incandescent light bulb installed in an existing automobile interior light, a light emitting unit in which a plurality of LEDs are fixed on a substrate, a base member that holds the light emitting unit, An LED lamp for an automotive interior light, comprising connection means for fixing the power supply unit and the base member so that the position of the power supply unit and the base member can be adjusted relative to each other.   2. The vehicle according to claim 1, wherein the relative position adjustment between the power feeding unit and the base member includes a movement in a horizontal direction and a vertical direction and a rotational movement with respect to a vertical axis in a mounted state on the vehicle. LED lamp for interior lighting. ^{2. The} interior light for an automobile according to claim 1, wherein an area in the horizontal direction of the base member in a mounted state on the vehicle is 1600 mm ² or less and a thickness in the vertical direction of the base member is 7 mm or less. LED lamp.   The plurality of LEDs are composed of at least nine LEDs, and the illuminance measured at a position 30 cm directly below the tip from the light emitting part when the current is supplied in a dark room under the conditions of a voltage of 12 V and a current of 75 mA is 86 Lx or more. The LED lamp for a vehicle interior light according to claim 1, wherein