JP6125935B2 - Bulb for lighting - Google Patents

Description

  The present invention relates to a lighting bulb that constitutes a lighting device for a vehicle.

A vehicular lighting device mainly includes a lamp and a lighting bulb.
Among these, the bulb for illumination has an element installation part in which the LED is installed and a heat sink part in which a plurality of cooling fins are formed, and a lamp is provided between the element installation part and the heat sink part. A plurality of claw portions used for fixing to the arm are provided.

These claw portions are arranged at predetermined intervals around an axis in the axial direction when the arrangement direction of the element installation portion and the heat sink portion is defined as the axial direction.
On the other hand, the lamp includes a reflector whose inner surface is mirror-finished and a housing that covers the outer surface of the reflector.

The lamp is provided with an opening that passes through the housing and the reflector and passes through a central portion (the deepest portion of the concave surface) of the reflector.
The lamp is provided with a plurality of mounting grooves for fixing the lighting bulb.

These mounting grooves are formed in an arc shape in which an inner peripheral surface of an opening formed in the housing is recessed.
In addition, the mounting grooves are provided with a notch that opens toward the back side of the lamp on one end side in the direction along the arc of each mounting groove. This notch part is formed in the magnitude | size which can let a nail | claw part pass.

When the lighting bulb configured as described above is attached to a lamp, first, the element installation portion of the lighting bulb is passed through the opening of the lamp from the back side of the lamp.
Then, each claw portion of the lighting bulb is passed through the notch portion of the lamp, the lighting bulb is rotated about the axis, and each claw portion is engaged with each mounting groove.

Then, the lighting bulb is fixed to the lamp.
When the lighting device having the lighting bulb attached to the lamp as described above is used as, for example, a vehicle headlamp, when the LED installed in the element installation portion is caused to emit light, the light emitted from the LED is reflected by the reflector. The front of the vehicle is illuminated by the reflected light.

  However, the entire conventional bulb for lighting is integrally molded, bonded or fixed, and the position of the mounting groove of the lamp differs depending on the vehicle type or the lamp installed in the vehicle.

  Therefore, when a lighting bulb is attached to a certain lamp, each LED provided in the element installation section can be arranged at a position suitable for lighting, but when it is attached to another lamp, it is placed at a position not suitable for lighting. There was a problem of being placed.

  Specifically, when an illumination bulb is attached to a certain lamp, the LED faces in the right-and-left direction and “downward” as directions suitable for illumination, whereas the illumination bulb is attached to another lamp In some cases, the LEDs face the left-right direction and the “upward direction”.

  Therefore, the present invention provides an illumination bulb capable of fixing each light emitting element provided in the element installation portion at a position suitable for illumination with respect to any lamp having different mounting groove positions. The purpose is to provide.

  An illumination bulb (1) according to claim 1 is arranged in an element installation part (2) in which a light emitting element is installed around an axis of a central axis (α) and in the element installation part along the central axis. A plurality of claw portions (33a to 33c) arranged at intervals around the axis of the central axis, wherein the claw portions are rotatably installed around the axis of the central axis. It is characterized by being.

  In this illumination bulb, the claw portion rotates around the central axis with respect to the element installation portion, so that the element installation portion rotates around the central axis so that the light emitting elements (LEDs, etc.) are oriented in a direction suitable for illumination. Even if it is made to rotate, the position of this nail | claw part can be changed suitably by rotating around a central axis.

  Therefore, the lighting bulb according to the present invention can be fixed to any lamp having different mounting groove positions while arranging the light emitting elements provided in the element installation portion at positions suitable for illumination. .

In addition, as described in Claim 5, you may further provide the heat sink part.
By the way, when lighting is performed by attaching an illumination bulb to a lamp, usually, light emitted from a light emitting element is reflected by a reflector, and the reflected light is emitted in a light projecting direction.

At that time, light emitted from the light-emitting element may be emitted toward the side opposite to the light projecting direction and reflected by the reflector.
In particular, a light emitting element often has directivity, and light emitted from the light emitting element needs to be diffused and projected. Therefore, light emitted from the light emitting element is preferably reflected by a reflector.

  Therefore, as in the lighting bulb according to claim 2, an installation surface (22) for installing the light emitting element around the central axis is formed in the element installation portion, and the installation surface includes the element installation portion and the claw. In the arrangement direction of the parts, when the element installation part side is the front and the claw part side is the rear, it is preferable to form an inclined surface that approaches the central axis from the front side toward the rear side.

  In this way, the light emitted from the light emitting element can be emitted toward the side opposite to the light projecting direction (rear side). Therefore, when this illumination bulb is attached to the lamp, the emitted light is reduced. The light can be reflected by the reflector and irradiated in the light projecting direction.

  Next, as in the lighting bulb according to claim 3, the element installation portion includes an attachment core portion (21) extending along the central axis from the installation portion main body (20) where the light emitting element is installed. The claw portions may be provided upright on the outer peripheral surface of the fixed portion main body (30) through which the attachment core portion can be inserted.

If it does in this way, a nail | claw part can be installed so that rotation around the axis | shaft of a center axis | shaft is possible only by inserting a fixing | fixed part main body in an attachment core part.
When assembling the lighting bulb in this way, as described in claim 4, the fixing portion main body has a first caulking hole (31a) for passing through the fixing portion main body and screwing the caulking member. It is good to be formed.

  In addition, as described in claim 6, the heat sink portion includes a plurality of insertion tubes (40) that can be inserted through the attachment core portion, and a plurality of radial tubes standing radially along the outer peripheral surface of the insertion tube. When the cooling fin (41) is provided, the insertion tube may be formed with a second caulking hole (40a) for penetrating the insertion tube and screwing the caulking member.

  When the caulking member is screwed into each of these caulking holes and screwed until the end of the caulking member dents the surface of the mounting core portion, the insertion tube or the fixing portion main body is fixed to the mounting core portion via the caulking member. Thus, the claw part and the heat sink part can be fixed to the element installation part.

Next, as described in claim 7, it is preferable that the three light-emitting elements are installed with respect to the element installation part while changing positions by 90 degrees around the axis of the element installation part.
If it does in this way, when it attaches to a lamp, for example, each light emitting element with which the element installation part was equipped can be installed in the position suitable for illumination, for example, a right-and-left position, and a lower position.

In addition, as described in Claim 8, although LED may be used as a light emitting element, for example, it is not restricted to this.
Incidentally, the reference numerals in parentheses for each of the above means are examples showing the correspondence with the specific means described in the embodiments described later, and the present invention is indicated by the reference numerals in the parentheses of the above respective means. It is not limited to specific means.

It is a top view of the bulb | ball for illumination of this embodiment, and shows a mode that it is assembled in order of (a)-(c). It is explanatory drawing of the valve | bulb for illumination of this embodiment, (a) is a rear view, (b) is a front view, (c) is a top view, (d) is a bottom view, It rotates around a central axis, and each The figure is shown. It is a right view of a heat sink part. It is a rear view of a lamp, Comprising: The position which the nail | claw part of the bulb | ball for illumination of this embodiment meshes is shown with the permeation | transmission figure (diagonal line). It is explanatory drawing of an illuminating device, Comprising: It is a perspective view which shows a mode that the bulb | ball for illumination of this embodiment was attached to the lamp. It is explanatory drawing of an illuminating device, Comprising: It is a perspective view which shows a mode that the bulb | ball for illumination of this embodiment was attached to the lamp. It is explanatory drawing which shows other embodiment, Comprising: It is a front view of a fixing | fixed part.

Next, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the lighting bulb 1 of the present embodiment includes an element installation portion 2, a fixing portion 3, and a heat sink portion 4.

  These elements are arranged side by side in the order of the element installation part 2, the fixing part 3, and the heat sink part 4 along a predetermined central axis α. In accordance with this arrangement direction, the arrangement direction side from the heat sink portion 4 toward the element installation portion 2 is referred to as a front end side, and the arrangement direction side from the element installation portion 2 to the heat sink portion 4 is referred to as a rear end side.

The element installation part 2 has an installation part main body 20 and an attachment core part 21.
Among these, the installation part main body 20 is formed in a columnar shape along the central axis α, and the attachment core part 21 extends along the central axis α from the rear end side of the installation part main body 20. The central axis α of the lighting bulb 1 coincides with the central axis α of the mounting core portion 21.

  Further, on the outer peripheral surface of the element installation portion 2, as shown in FIG. 2, the LED is installed on the installation surface 22, and the position is changed by 90 ° around the axis centering on the central axis α. Three installation surfaces 22 are formed.

  These installation surfaces 22 form inclined surfaces that approach the central axis α from the front side toward the rear side (see FIGS. 5 and 6). The LEDs (not shown) are formed in a planar shape, and each LED is attached to each installation surface 22 along the inclined installation surface 22.

However, the center installation surface 22 (FIG. 2C) is formed at a position shifted to the rear side compared to the installation surfaces 22 on both sides (FIGS. 2A and 2B).
The mounting core portion 21 is formed with a thread on the rear end side 2/3 of the outer peripheral surface thereof.

Moreover, although the attachment core part 21 is formed in the cylindrical shape, this is for passing the electric power line connected to LED.
Next, the fixing | fixed part 3 has the fixing | fixed part main body 30 and the nail | claw parts 33a-33c, as shown in FIG.

  The fixing portion main body 30 is composed of two parts. One part 31 has a smaller diameter than the other part 32 and is formed in a long cylindrical shape along the central axis α. Is formed in a thin disk shape in a direction along the central axis α.

Three claw portions 33a to 33c are arranged at intervals on the outer peripheral surface of the portion 32 formed in a thin disk shape in the fixed portion main body 30.
The claw portions 33a to 33c are formed in a flat plate shape thinner than the portion 32 when compared with the thickness in the direction along the central axis α direction, and when viewed in the direction perpendicular to the central axis α, It is formed in a substantially arc shape centered on the axis α.

Further, the fixing portion main body 30 is formed with an insertion hole (not shown) through which the attachment core portion 21 can be inserted.
When the attachment core portion 21 is passed through the insertion hole of the fixed portion main body 30, the fixation portion 3 is attached to the attachment core portion 21 so as to be rotatable about the central axis α.

A first caulking hole 31a is formed in the portion 31 of the fixing portion main body 30 so as to penetrate the portion 31 and to be screwed into the caulking member.
When the caulking member is screwed into the first caulking hole 31a and the tip of the caulking member reaches the surface of the mounting core portion 21 and the surface is recessed, the fixing portion 3 is fixed to the mounting core portion 21. The

  Next, as shown in FIG. 3, the heat sink portion 4 is erected radially along the radial direction on a cylindrical insertion tube 40 through which the attachment core portion 21 can be inserted, and on the outer peripheral surface of the insertion tube 40. And a plurality of cooling fins 41.

  A thread (not shown) is formed on the inner peripheral surface of the insertion tube 40. When the attachment core 21 is inserted, the thread of the attachment core 21 and the thread of the insertion tube are engaged with each other and attached. The heat sink part 4 is inserted into the core part 21 while rotating.

Further, as shown in FIG. 1, the insertion tube 40 is formed with a second caulking hole 40a through which the insertion tube 40 can be screwed.
When the caulking member is screwed into the second caulking hole 40a and the tip of the caulking member reaches the surface of the mounting core portion 21 and the surface is recessed, the heat sink portion 4 is fixed to the mounting core portion 21. The

The lighting bulb 1 is assembled by inserting the fixing portion 3 and the heat sink portion 4 into the mounting core portion 21 in this order, as shown in order from FIG. 1A to FIG.
At this time, the heat sink part 4 is screwed to the attachment core part 21 and is fixed with the fixing part 3 sandwiched between the heat sink part 4 and the installation part main body 20.

  In the illumination bulb 1 of the present embodiment described above, the claw portions 33a to 33c rotate around the central axis α with respect to the element installation portion 2 by the fixing portion 3 being rotatably attached to the attachment core portion 21. Move.

  On the other hand, as shown in FIG. 4, the position of the mounting groove of the lamp to which the claw portions 33a to 33c are mounted differs depending on the vehicle type or the lamp installed in the vehicle. Specifically, in FIG. 4 (a), the position of the notch portion of the mounting groove is downward, diagonally upward and diagonally upward to the left, and in FIG. 4 (b), upward, diagonally downward and diagonally downward to the left. is there.

  In this embodiment, when the lighting bulb 1 is attached to each lamp, the fixing portion 3 can be rotated around the central axis α and can be arranged at positions where the claw portions 33a to 33c are attached to the attachment grooves. is there.

  Therefore, as shown in FIGS. 5 and 6, the element installation portion 2 is rotated around the central axis α so that the LED attached to the installation surface 22 faces in a direction suitable for illumination (left and right direction and downward direction). In addition, as shown in FIG. 4, the positions of the claw portions 33 a to 33 c can be appropriately changed by rotating around the central axis α.

  Therefore, the lighting bulb 1 according to the present embodiment fixes each LED provided in the element installation portion 2 to any lamp having a different mounting groove position, while arranging the LEDs at positions suitable for lighting. Can do.

By the way, when illuminating with the illumination bulb 1 attached to the lamp 9, usually, the light emitted from the LED is reflected by the reflector, and the reflected light is emitted in the light projecting direction.
At that time, light emitted from the LED may be emitted toward the side opposite to the light projecting direction and reflected by the reflector.

  In particular, an LED often has directivity, and light emitted from the LED needs to be diffused and projected. Therefore, the light emitted from the LED may be reflected by a reflector.

  Therefore, when the installation surface 22 on which the LED is installed is inclined rearward as in the illumination bulb 1 of the present embodiment, the LED is irradiated when the illumination bulb 1 is attached to the lamp 9. Light can be diffused and emitted toward the opposite side (rear side) of the light projecting direction.

Next, the lighting bulb 1 of this embodiment can be easily assembled by inserting the fixing portion 3 into the mounting core portion 21 provided in the element installation portion and screwing the heat sink portion 4.
Further, if the caulking members are screwed into the caulking holes 31 a and 40 a, the fixing part 3 and the heat sink part 4 can be fixed to the element installation part 2.
[Other Embodiments]
Although the embodiment has been described above, it is needless to say that the invention described in the claims is not limited to the above embodiment and can take various forms.

(1) The lighting bulb 1 described in the above embodiment is merely an example, and the present invention is not limited to this.
(2) In the said embodiment, although LED was illustrated as a light emitting element, it is not limited to this. Further, the claw portions 33a to 33c may be provided in the portion 31 instead of the portion 32 of the fixed portion main body 30, as shown in FIG.

DESCRIPTION OF SYMBOLS 1 ... Lighting bulb 2 ... Element installation part 3 ... Fixing part 4 ... Heat sink part 20 ... Installation part main body 21 ... Mounting core part 22 ... Installation surface 30 ... Fixed part main body 31a ... Caulking hole 33a-33c ... Claw part 40 ... Insertion Tube 40a ... Caulking hole 41 ... Cooling fin

Claims (8)

An element installation part (2) in which a light emitting element is installed around the axis of the central axis α;
A plurality of claw portions (33a to 33c) arranged along the central axis α along the element installation portion and spaced around the central axis α;
With
The nail portion is
An illumination bulb (1), wherein the bulb (1) is installed so as to be rotatable about the central axis α. The lighting bulb according to claim 1,
In the element installation part,
An installation surface (22) for installing the light emitting element around the axis of the central axis α is formed,
The installation surface is
In the arrangement direction of the element installation part and the claw part, when the element installation part side is the front and the claw part side is the rear, an inclined surface that approaches the central axis α is formed from the front side toward the rear side. Lighting bulb characterized by that. The lighting bulb according to any one of claims 1 and 2,
The element installation part is
An attachment core portion (21) extending along the central axis α from the installation portion main body (20) where the light emitting element is installed;
Each nail part is
An illumination bulb, wherein the bulb is erected on an outer peripheral surface of a fixed portion main body (30) through which the mounting core portion can be inserted. The lighting bulb according to claim 3,
The illumination bulb according to claim 1, wherein a first caulking hole (31a) for screwing a caulking member is formed in the fixing portion. The bulb for lighting according to any one of claims 1 to 4,
An illumination bulb, further comprising a heat sink. The lighting bulb according to any one of claims 3 and 4,
An insertion tube (40) through which the mounting core portion can be inserted;
A heat sink comprising a plurality of cooling fins (41) erected radially along the radial direction on the outer peripheral surface of the insertion tube;
The insertion bulb is formed with a second caulking hole (40a) for screwing the caulking member. The illumination bulb according to any one of claims 1 to 6,
The lighting bulb, wherein the three light-emitting elements are installed with respect to the element installation section by changing positions by 90 ° around the axis of the element installation section. The illumination bulb according to any one of claims 1 to 7,
The light-emitting element is an LED.