JP6869068B2 - Lamp - Google Patents

Description

The present invention relates to a technical field for a lamp having a flexible planar illuminant.

WO2015 / 098822

Some lamps, for example, vehicle lamps, use a planar light emitter (see, for example, Patent Document 1). In the lamp tool described in Patent Document 1, a flat plate-shaped light emitter is held by a frame-shaped member, an elastic member, or the like.

By the way, in recent years, the technology for a planar illuminant having a planar illuminant having an organic EL (Electro Luminescence) layer or a light emitting diode sandwiched between a conductive layer or a film has been improved, and a flexible planar illuminant has been improved. Development is also progressing.

When such a flexible planar illuminant is used for, for example, a vehicle lamp, the planar illuminant can be bent according to the shape of the vehicle body, and the usage related to the type of vehicle lamp is used. It is possible to expand the number of lamps and improve the degree of freedom in design.

However, when a bendable planar light emitter is used, many of the bent planar light emitters have elasticity to return to the original state before bending, and the planar light emitter is bent. A holding structure that holds the state is required. Further, in order to reduce the manufacturing cost and the like, it is also desired to hold the planar illuminant in a stable state by a simple holding structure.

Therefore, an object of the present invention is to hold the planar illuminant in a stable state by a simple structure.

First, the lamp according to the present invention has an engaging portion in which at least one surface in the thickness direction is formed as a light emitting surface to emit light and is bendable, and the planar light emitting body is engaged with the planar light emitting body. The planar illuminant is held by the holder by being engaged with the engaging portion in a state where at least a part of the planar illuminant is bent , and one of the planar illuminants is held in the holder. An insertion portion into which the portion is inserted is provided, at least a part of the insertion portion is provided as the engaging portion, an insertion groove is formed as the insertion portion, and both surfaces in the width direction of the insertion groove are engaged. It is formed as a joint portion, and at least a part of the insertion groove is formed in a crank shape or a meandering shape .

As a result, the planar illuminant is held in a bent state by being engaged with the engaging portion of the holder. Further, by inserting the planar illuminant into the insertion portion, it becomes possible to engage the planar illuminant with the engaging portion. Further, each portion of both sides of the planar illuminant in the thickness direction is engaged with the engaging portion.

Second, in the lamp according to the present invention described above, wherein the insertion portion first surface and a second surface which is located opposite is formed, said engagement portion from said first surface The insertion portion may be provided with a pressing protrusion that protrudes to the second surface side and that protrudes from the second surface to the first surface side and presses the planar light emitter inserted into the insertion portion. desirable.

As a result, the planar illuminant is inserted into the insertion portion and is pressed by the pressing protrusion in a state of being engaged with the engaging portion.

Third, in the lamp according to the present invention described above, the engaging portion is provided two, the planar light emitter is the other end portion the other end portion is engaged with the engagement portion of one It is desirable to be engaged with the engaging portion.

As a result, the two parts of the planar illuminant are each engaged with the engaging portion and held by the holder.

According to the present invention, since the planar illuminant is held in a bent state by being engaged with the engaging portion of the holder, the planar illuminant can be held in a stable state by a simple structure. it can.

2 to 11 show an embodiment of the lamp of the present invention, and this figure is a perspective view showing a configuration example of the lamp. It is sectional drawing which shows the state which the planar light emitter is assembled to the holder. FIG. 2 is a cross-sectional view showing a state in which the planar illuminant is assembled to the holder following FIG. FIG. 3 is a cross-sectional view showing a state in which the planar illuminant is assembled to the holder following FIG. It is sectional drawing which shows the example which the planar illuminant is assembled to a holder by using an insertion pin. It is an exploded perspective view which shows the example which the planar illuminant is assembled to the holder by using the engaging hole. It is sectional drawing which shows the example which the planar illuminant is assembled to the holder by using the engaging claw. FIG. 9 shows an example in which the planar illuminant is held by the holder according to the first modification, and this figure shows a state in which both ends of the planar illuminant are engaged with the engaging portions. It is sectional drawing which shows. It is sectional drawing which shows the example which provided the holding protrusion part and the positioning protrusion part in the insertion part. Along with FIG. 11, an example in which the planar illuminant is held by the holder according to the second modification is shown, and this figure is an exploded perspective view showing two insertion portions and the planar illuminant. It is a top view which shows the state in which a planar illuminant is inserted into an insertion part and is held in the insertion part with a part as a cross section.

Hereinafter, embodiments for carrying out the lamp of the present invention will be described with reference to the accompanying drawings.

The embodiment shown below is an application of the lamp of the present invention to a vehicle lamp that irradiates a rearward illumination light. The present invention includes various types of head lamps, tail lamps, clearance lamps, turn signal lamps, stop lamps, daytime running lamps, cornering lamps, hazard lamps, position lamps, back lamps, fog lamps, or combination lamps which are combinations thereof. It can be widely applied to the lighting equipment for vehicles.

In the following description, the directions of front-back, up-down, left-right are shown with the direction of light irradiation to the outside as the rear. However, the front-back, up-down, left-right directions shown below are for convenience of explanation, and the practice of the present invention is not limited to these directions.

<Example of lamp configuration>
An example of the configuration of the lamp 1 will be described below (see FIGS. 1 and 2). The lamps 1 are attached and arranged at the left and right ends of the vehicle body, respectively. The lamp 1 includes a lamp housing 2 having a recess opened rearward and a cover 3 that closes the opening of the lamp housing 2. The lamp housing 2 and the cover 3 form a lamp outer housing 4, and the internal space of the lamp outer housing 4 is formed as a lamp chamber 5.

A holder 6 is arranged in the light room 5. In addition, a member other than the holder 6 such as a reflector for reflecting light, an inner lens having a light control step, and a bracket for attaching a predetermined member may be arranged in the light chamber 5.

The holder 6 has a rear surface portion 7, an upper surface portion 8, a lower surface portion 9, and a pair of side surface portions 10, 10.

The rear surface portion 7 is gently bent (curved) so as to be convex rearward. A transmission hole 7a is formed in the rear surface portion 7 except for the outer peripheral portion.

The upper surface portion 8 and the lower surface portion 9 project forward from the upper and lower end portions of the rear surface portion 7, respectively. The side surface portions 10 and 10 project forward from the left and right end portions of the rear surface portion 7, respectively. The side surface portions 10 and 10 are provided with engaging portions 11 and 12 projecting in a direction approaching each other, and the engaging portions 11 and 12 are formed in a shape extending vertically.

In the holder 6, a first insertion portion 6a is formed by one end portion of the engaging portion 11 and the rear surface portion 7 in the left-right direction, one end portion of the upper surface portion 8 in the left-right direction, and one end portion of the lower surface portion 9 in the left-right direction. The second insertion portion 6b is formed by the other end portion of the engaging portion 12 and the rear surface portion 7 in the left-right direction, the other end portion of the upper surface portion 8 in the left-right direction, and the other end portion of the lower surface portion 9 in the left-right direction. There is.

The holder 6 is attached to other members such as a lamp housing 2 and a bracket that form a part of the lamp 1.

The planar illuminant 13 is held in the holder 6. The planar light emitter 13 is, for example, a flexible film-like light emitter in which a plurality of LEDs (light emitting diodes) are arranged as a light source between a pair of transparent resin films, and light is emitted from each light source. It is configured to be. In the planar light emitting body 13, for example, as shown in Japanese Patent Application Laid-Open No. 2015-201301, conductive layers are laminated on both sides of the adhesive layer, and base films are laminated on the outer surface side of the conductive layer, respectively, and they are adhered in the thickness direction. A plurality of LEDs are scattered and arranged at the same position as the layer.

The planar light emitter 13 is formed transparently except for the light source (LED), and the rear surface is formed as an light emitting surface. The light source is arranged in a portion other than the outer peripheral portion of the planar light emitter 13. The planar illuminant 13 is provided with one end in the left-right direction as the first insertion portion 13a and the other end in the left-right direction as the second insertion portion 13b. One end of a flexible printed wiring board (not shown) is connected to the planar illuminant 13, and power is supplied to each light source of the planar illuminant 13 from a power source via the flexible printed wiring board and the conductive layer. ..

As the planar illuminant 13, for example, a bendable organic EL panel having an organic EL (Electro Luminescence) layer that emits light by itself may be used.

The procedure for attaching the planar illuminant 10 to the holder 6 will be described below (see FIGS. 2 to 4).

In the planar light emitter 13, the first insertion portion 13a is first inserted into the first insertion portion 6a of the holder 6 and engaged with the engagement portion 11 (see FIG. 2). At this time, the planar illuminant 13 is bent and inserted into the first insertion portion 6a.

Next, the planar illuminant 13 is bent so as to be convex forward so that the central portion in the left-right direction is located in front of the other portions (see FIG. 3).

Subsequently, in the planar illuminant 13, the second insertion portion 13b is inserted into the second insertion portion 6b of the holder 6, engaged with the engaging portion 12, and held by the holder 6 (see FIG. 4). ). When the second insertion portion 13b is inserted into the second insertion portion 6b, the planar illuminant 13 is gently bent (curved) so as to be convex rearward, and the outer peripheral portion of the rear surface is behind the holder 6. It is in close contact with the front surface of the surface portion 7.

When light is emitted from the light source of the planar illuminant 13 in a state where the planar illuminant 13 is held in the holder 6, the emitted light is transmitted through the lens 3 through the transmission hole 7a of the holder 6. It is irradiated to the outside (light L shown in FIGS. 1 and 4). At this time, when the inner lens is arranged behind the planar light emitter 13, the light emitted from the light source is controlled by the light control step of the inner lens, diffused and irradiated to the outside.

In the above, the left and right ends of the planar illuminant 13 are engaged with the engaging portion 11 and the engaging portion 12 and held by the holder 6, but for example, the planar illuminant 13 The upper and lower ends may be configured to be engaged with the engaging portions of the holder, respectively.

Further, the example of the holder 6 provided with the upper surface portion 8 and the lower surface portion 9 in addition to the side surface portions 10 and 10 is shown above. For example, the holder 6 or the planar light emitter 13 has a positioning pin or a positioning hole. The holder 6 may not be provided with the upper surface portion 8 and the lower surface portion 9 as long as the holder 6 is formed and the planar light emitter 13 is positioned in the vertical direction with respect to the holder 6 by a positioning pin, a positioning hole, or the like. ..

Further, a mounting pin 7b projecting forward may be provided on the rear surface portion 7 of the holder 6, and a mounting hole 13c may be formed in the planar light emitter 13 (see FIG. 5). In such a configuration, one end of the planar illuminant 13 is engaged with the engaging portion 11 (12) in the left-right direction, and the mounting pin 7b is inserted into the mounting hole 13c formed at the other end in the left-right direction. The mounting pin 7b may be thermally caulked and held in the holder 6.

Furthermore, one side surface portion 10 of the holder 6 is provided as an engaging portion 12X, and engaging holes 10a and 10a are formed in the side surface portions 10 provided as the engaging portion 12X so as to be vertically separated from each other to emit light in a planar manner. The insertion protrusions 13d and 13d may be vertically separated from each other at one end of the body 13 (see FIG. 6). In such a configuration, one end of the planar illuminant 13 is engaged with the engaging portion 11 (12) in the left-right direction, and the insertion protrusions 13d and 13d provided at the other end in the left-right direction are engaged, respectively. It may be inserted into the holes 10a and 10a, engaged with the side surface portion 10 (engaging portion 12X), and held by the holder 6.

With such a configuration, the insertion protrusions 13d and 13d and the engaging holes 10a and 10a position the planar illuminant 13 in the vertical direction with respect to the holder 6, and the holder 6 is positioned in the vertical direction. Therefore, it is not necessary to provide the upper surface portion 8 and the lower surface portion 9, and the structure of the holder 6 can be simplified.

Further, the engaging portion 11 (12) may be provided with an engaging claw 14 projecting toward the rear surface portion 7 side (see FIG. 7). The engaging claw 14 has an inclined surface 14a that approaches the rear surface portion 7 from the inside to the outside of the holder 6 in the left-right direction, and a locking surface 14b that is continuous with the outer edge of the inclined surface 14a and faces left or right. Have. In this case, the distance between the engaging portion 11 (12) and the rear surface portion 7 of the holder 6 is made larger than the thickness of the planar illuminant 13.

A locking hole 13e is formed in the planar illuminant 13, and one end edge of the planar illuminant 13 is slid on an inclined surface 14a in the left-right direction to form a first insertion portion 6a (second insertion portion 6b). ), The engaging claw 14 is inserted into the locking hole 13e, and the opening edge of the locking hole 13e is locked to the locking surface 14b and engaged with the engaging portion 11.

By providing the engaging claw 14 on the holder 6 in this way, it is possible to prevent the planar illuminant 13 from falling off (disappearing) from the holder 6 with a simple structure.

Although the example in which the engaging claw 14 is provided so as to project toward the rear surface portion 7 is shown above, the engaging claw 14 is provided so as to project toward the engaging portion 11 (12) side in the rear surface portion 7. It may have been.

As described above, in the lamp 1, the holder 6 is provided with a first insertion portion 6a or a second insertion portion 6b into which a part of the planar illuminant 13 is inserted, and the first insertion portion 6a is provided. Alternatively, at least a part of the second insertion portion 6b is provided as the engaging portion 11 or the engaging portion 12.

Therefore, by inserting the planar illuminant 13 into the first insertion portion 6a or the second insertion portion 6b, it becomes possible to engage the planar illuminant 13 with the engaging portions 11 and 12. The surface illuminant 13 can be easily engaged with the engaging portions 11 and 12, and the workability in the work of assembling the surface illuminant 13 to the holder 6 can be improved.

Further, in a configuration in which one end of the planar illuminant 13 is engaged with the engaging portion 11 and the other end of the planar illuminant 13 is engaged with the engaging portion 12 (12X), the planar illuminant 13 is engaged. Since both ends of the above are engaged with the engaging portions 11 and 12 (12X) and held by the holder 6, a stable holding state of the planar illuminant 13 can be ensured by a simpler configuration.

<First modification of the holder>
Next, the holder 6A according to the first modification will be described (see FIGS. 8 and 9).

The holder 6A has a base portion 21 formed in a U shape that opens rearward in a horizontal cross section, and a holding portion 22 located inside the base portion 21 (see FIG. 8).

The base portion 21 and the holding portion 22 may be integrally formed or may be formed as separate members. When the base portion 21 and the holding portion 22 are separate members, the base portion 21 and the holding portion 22 may be the whole or a part of the lamp housing 2, the bracket, and the extension, which are components of the lamp 1, respectively. ..

The base portion 21 has a front wall portion 23 facing in the front-rear direction and side wall portions 24, 24 protruding rearward from both left and right end portions of the front wall portion 23, respectively. The holding portion 22 projects rearward from a portion of the front wall portion 23 excluding the left and right ends.

The holder 6A is provided with insertion portions 6c and 6c having a space opened at least rearward by the base portion 21 and the side wall portions 24 and 24 of the holding portion 22 at both left and right ends. The surfaces of the holding portion 22 and the side wall portion 24 facing each other in the left-right direction of the insertion portion 6c are the first surface 22a and the second surface 24a, respectively.

Engagement portions 25, 25 protruding from the first surfaces 22a, 22a of the holding portion 22 toward the second surfaces 24a, 24a, respectively, are provided. The engaging portion 25 has an inclined surface 25a that approaches the side wall portion 24 as it goes forward, and a locking surface 25b that is continuous with the front end edge of the inclined surface 25a and faces forward.

Locking holes 13e and 13e are formed at both left and right ends of the planar illuminant 13. The left and right sides of the planar illuminant 13 are inserted into the insertion portions 6c and 6c from the rear, for example, in a state of being bent at a substantially right angle. When the left and right side portions of the planar light emitter 13 are inserted into the insertion portions 6c and 6c, the tip edges on both the left and right sides are slid on the inclined surfaces 25a and 25a, respectively, and are inserted into the back side (front side). The engaging portions 25 and 25 are inserted into the locking holes 13e and 13e, respectively, and the opening edges of the locking holes 13e and 13e are locked to the locking surfaces 25b and 25b, respectively, and engaged with the engaging portions 25 and 25. ..

By providing the engaging portions 25 and 25 in the holder 6A in this way, the planar illuminant 13 is assembled to the holder 6A by inserting the planar illuminant 13 into the insertion portions 6c and 6c, so that the planar illuminant 13 is assembled to the holder 6A. 13 can be easily and securely assembled to the holder 6A.

In the above, an example in which the engaging portion 25 is provided so as to project from the first surface 22a toward the second surface 24a is shown, but the engaging portion 25 is the first from the second surface 24a. It may be provided so as to project toward the surface 22a.

Further, the insertion portion 6c of the holder 6A may be provided with a pressing protrusion 26 and a positioning protrusion 27 (see FIG. 9).

The pressing portion 26 is provided inside the insertion portion 6c on the front side of the engaging portion 25, and protrudes from the second surface 24a to the first surface 22a side. The end portion of the planar illuminant 13 inserted into the insertion portion 6c is pressed by the pressing protrusion 26, and is brought into contact with the pressing protrusion 26 and the first surface 22a from both sides.

The positioning protrusion 27 is provided inside the insertion portion 6c on the rear side of the engaging portion 25, and protrudes from the first surface 22a to the second surface 24a side. A part of the planar illuminant 13 inserted into the insertion portion 6c is brought into contact with the positioning protrusion 27, and is brought into contact with the positioning protrusion 27 and the second surface 24a from both sides.

By bringing a part of the planar illuminant 13 inserted into the insertion portion 6c into contact with the positioning protrusion 27 in this way, the planar illuminant 13 is positioned in the left-right direction with respect to the holder 6A. The positional accuracy of the planar illuminant 13 with respect to the holder 6A is improved.

Further, as described above, the insertion portions 6c and 6c are provided with the holding protrusions 26 and 26 for pressing the planar illuminants 13, so that the planar illuminants 13 are inserted into the insertion portions 6c and 6c and the engaging portions 25. Since it is pressed by the pressing protrusions 26, 26 in a state of being engaged with the 25, it is possible to reliably prevent the planar light emitter 13 from falling off (disappearing) from the insertion portions 6c, 6c by a simple structure.

<Second modification of the holder>
Next, the holders 6B and 6B according to the second modification will be described (see FIGS. 10 and 11).

The holders 6B and 6B are formed in a plate shape that is bent (curved) so as to face in the vertical direction and become convex rearward, and holds the planar illuminant 13 in a state of being separated from the vertical direction (see FIG. 10). The holders 6B, 6B are formed with groove-shaped insertion portions 31, 31, ..., ... Opened on the side facing the upper and lower surfaces.

The holder 6B is formed with two insertion portions 31 and 31 separated from each other on the left and right, and a portion between the insertion portions 31 and 31 of the holder 6B is provided as a positioning portion 32. The insertion portion 31 is formed so as to extend in a direction along the bent shape of the holder 6B, and the crank-shaped portion is continuous in the left-right direction. In the insertion portion 31, the longitudinal portions 31a, 31a, ... Extending in the substantially left-right direction and the short portions 31b, 31b extending in the substantially front-rear direction are alternately continuous.

In the holder 6B, both surfaces of the insertion portions 31 and 31 in the width direction are formed as engaging portions 31c and 31d, respectively (see FIG. 11).

The planar illuminant 13 is formed with positioning notches 13f and 13f at the center of both upper and lower ends in the left-right direction, and the positioning notches 13f and 13f are opened upward or downward (see FIG. 10). The thickness of the planar illuminant 13 is slightly smaller than the width of the insertion portion 31.

The upper and lower ends of the planar illuminant 13 are inserted into the insertion portions 31, 31, ..., Respectively, and held in the holders 6B, 6B (see FIG. 11). At this time, the positioning portions 32 and 32 of the holders 6B and 6B are inserted into the positioning cutouts 13f and 13f of the planar illuminant 13, respectively, and the planar illuminant 13 is positioned with respect to the holders 6B and 6B.

In the state where the planar illuminant 13 is held by the holders 6B, 6B, the upper and lower ends of the planar illuminant 13 inserted into the insertion portions 31, 31, ... Are the insertion portions 31, 31, ... It is elastically deformed in the front-rear direction according to the shape of the crank, and the front and rear both end portions at the upper and lower ends are engaged with the insertion portions 31, 31, ..., 31c, 31c, ..., 31d, 31d, ...・ ・ Engage in. At this time, since a force is generated at the upper and lower ends of the planar illuminant 13 in the direction of elastic recovery in the front-rear direction, the upper and lower ends of the insertion portion 13 are engaged according to the direction of elastic deformation due to the generated force. It is engaged in a state of being pressed against the portions 31c, 31c, ..., Or the engaging portions 31d, 31d, ....

In the above description, the holders 6B and 6B are vertically separated from each other, and the upper and lower ends of the planar illuminant 13 are inserted and held in the insertion portions 31, 31, ..., Respectively. , Holders 6B, 6B may be positioned apart from each other on the left and right, and both left and right ends of the planar illuminant 13 may be inserted and held in the insertion portions 31, 31, ..., Respectively.

In the holder 6B described above, both surfaces of the groove-shaped insertion portion 31 in the width direction are formed as engaging portions 31c and 31d, and the insertion portion 31 is formed in a crank shape.

Therefore, of the two sides of the planar illuminant 13 in the thickness direction, the portions separated in the longitudinal direction of the insertion portion 31 are engaged with the engaging portions 31c and 31d, so that the planar illuminant 13 is stabilized by a simple configuration. It is possible to secure the holding state.

Further, the planar light emitter 13 is pressed and engaged with the engaging portion 31c or the engaging portion 31d in a state where the portion inserted into the insertion portion 31 is elastically deformed and a force is generated in the direction of elastic recovery. Therefore, the planar illuminant 13 is unlikely to fall off from the holders 6B and 6B, and a more stable holding state of the planar illuminant 13 can be ensured.

Although the example in which the insertion portion 31 of the holder 6B is formed in a crank shape is shown above, the insertion portion 31 may be formed in a meandering shape.

<Summary>
As described above, the lamp 1 includes holders 6, 6A, 6B having engaging portions 11, 12, 12X, 25, 31c, 31d to which the planar light emitter 13 is engaged, and is planar. The light emitting body 13 is held by the holders 6, 6A and 6B by engaging with the engaging portions 11, 12, 12X, 25, 31c and 31d at least in a bent state.

Therefore, the planar illuminant 13 is held in a bent state by being engaged with the engaging portions 11, 12, 12X, 25, 31c, 31d of the holders 6, 6A, 6B, so that the planar illuminant 13 is held. 6, 6A and 6B can be held in a stable state by a simple structure.

The planar illuminant 13 may be held by the holders 6, 6A, 6B in a fully bent state, or may be held by the holders 6, 6A, 6B in a partially bent state. Good.

Further, the holders 6, 6A, and 6B may be provided as dedicated parts for holding the planar light emitter 13, but other components such as the lamp housing 2, the bracket, the extension, and the inner lens, which are the components of the lamp 1, may be provided. Parts may be used. When the inner lens is used as the holders 6, 6A, and 6B, the rear surface portion may be formed in a shape that does not have the transmission hole 7a, and the rear surface portion is formed with a lens step having a diffusion function or the like. Just do it.

1 ... Lamp, 13 ... Planar illuminant, 6 ... Holder, 6a ... First insertion part, 6b ... Second insertion part, 10 ... Side part (engagement part), 11 ... Engagement part, 12 ... Joint part, 13 ... planar illuminant, 12X ... engaging part, 6A ... holder, 6c ... insertion part, 22a ... first surface, 24a ... second surface, 25 ... engaging part, 26 ... pressing protrusion , 6B ... Holder, 31 ... Insertion part, 31c ... Engagement part, 31d ... Engagement part

Claims (3)

A flexible planar illuminant formed by at least one surface in the thickness direction as an light emitting surface that emits light.
A holder having an engaging portion with which the planar illuminant is engaged is provided.
The planar illuminant is held by the holder by being engaged with the engaging portion in a state where at least a part is bent .
The holder is provided with an insertion portion into which a part of the planar illuminant is inserted.
At least a part of the insertion portion is provided as the engagement portion, and the insertion portion is provided.
An insertion groove is formed as the insertion portion, and an insertion groove is formed.
Both surfaces in the width direction of the insertion groove are formed as the engaging portion.
A lamp in which at least a part of the insertion groove is formed in a crank shape or a meandering shape. A first surface and a second surface are formed on the insertion portion so as to face each other.
The engaging portion is projected from the first surface toward the second surface.
The insertion portion is provided with a pressing protrusion portion that protrudes from the second surface toward the first surface side and presses the planar light emitter inserted into the insertion portion.
The lamp according to claim 1. Two of the engaging parts are provided,
One end of the planar illuminant is engaged with one of the engaging portions and the other end is engaged with the other engaging portion.
The lamp according to claim 1 or 2.

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