CN204042492U - Luminescence unit, straight pipe type lamp and lighting device - Google Patents

Abstract

The utility model provides a kind of luminescence unit, straight pipe type lamp and lighting device, can improve assembling operation, and can obtain the stable thermal diffusivity from flexible wiring substrate to base station.Luminescence unit comprises light emitting module and base station.In light emitting module, on the surface of flexible wiring substrate, light-emitting component is installed.Base station comprises: plane substrate mounting surface, for the rear-face contact of flexible wiring substrate; And the maintaining part of both sides, be provided with groove portion, described groove portion is configured with the both sides of the flexible wiring substrate contacted with described substrate mounting surface.The front end of the both sides of flexible wiring substrate is not connected to the most deep in groove portion.Utilize maintaining part, bend making the both sides of flexible wiring substrate and keep flexible wiring substrate under the state that contacts along substrate mounting surface of the back side of flexible wiring substrate.

Description

Light emitting unit, straight tube lamp and lighting device

technical field

Embodiments of the present invention relate to a light-emitting unit (unit) of a light-emitting module mounted on a flexible wiring board using a light-emitting element, a straight tube lamp (lamp) using the light-emitting unit, and a lighting device .

Background technique

Conventionally, there have been, for example, straight-tube lamps or strip-shaped lighting fixtures using light-emitting units. The light emitting unit has a structure in which a light emitting module in which a light emitting element is mounted on a substrate is held on a base. As a light-emitting module, generally, a light-emitting element is mounted on a relatively strong substrate, but a light-emitting module in which a light-emitting element is mounted on a flexible wiring substrate has also been developed.

As far as the flexible wiring board is concerned, when the flexible wiring board is partially held on the base, the uniform adhesion between the flexible wiring board and the base cannot be obtained, and the heat dissipation will be affected. Therefore, flexible wiring boards are widely used. The entire length of the substrate remains on the abutment.

For example, the cross section of the base is formed into a semi-circular shape, and a protrusion is protruded from the center of the inner surface of the base. For contact, hooking portions are protruded on both sides of the inner surface of the base, and the front ends of the two sides of the flexible wiring board are abutted by the hooking portions. Furthermore, the flexible wiring board is bent as a whole in the width direction so that the center of the back surface of the flexible wiring board is in contact with the protrusion, and the front ends of both sides of the flexible wiring board are in contact with the hooking parts. In this state, The flexible wiring board is held on the base. Since the front ends of both sides of the flexible wiring board abut against the hook portions, the center of the back surface of the flexible wiring board is pressed by the protrusions. Furthermore, when assembling the base and the flexible wiring board, it is performed by inserting the flexible wiring board from one end side of the base.

[Prior art literature]

[Patent Document]

[Patent Document 1] Japanese Patent Laid-Open No. 2012-114034

Utility model content

[Problems to be solved by the utility model]

However, since the structure is such that the flexible wiring board is bent as a whole in the width direction, the front ends of both sides of the flexible wiring board are in contact with the hook parts, and the center of the back surface of the flexible wiring board is brought into contact with the protrusions. , the flexible wiring board is placed between the hooking portions on both sides, and the front ends of both sides of the flexible wiring board are pressed against the hooking portions.

Therefore, when the flexible wiring board is inserted from one end side of the base and assembled, the sliding resistance between the hook portion of the base and the front ends of both sides of the flexible wiring board is large, and the insertion is easily caught, and the flexible wiring As the amount of insertion of the board into the base increases and the length of the base becomes longer, it becomes difficult to insert the flexible wiring board into the base, resulting in poor assembly workability.

In addition, due to the influence of the width dimension of the flexible wiring board and the dimensional error of the base, there are disadvantages such as difficulty in inserting the flexible wiring board into the base, or the contact force of the center of the back surface of the flexible wiring board against the protrusion. become weaker and reduce heat dissipation.

The problem to be solved by the present invention is to provide a light emitting unit, a straight tube lamp, and a lighting device that can improve assembly workability and obtain stable heat dissipation from a flexible wiring board to a base.

[Technical means to solve the problem]

The light emitting unit of the embodiment includes a light emitting module and a base. In the light emitting module, the light emitting element is mounted on the surface of the flexible wiring board. The base has: a planar substrate mounting surface for contacting the back surface of the flexible wiring substrate; side. The front ends of both sides of the flexible wiring board do not contact the deepest part of the groove. The flexible wiring board is held by the holding portion in a state where both side portions of the flexible wiring board are bent and the back surface of the flexible wiring board is in contact along the board mounting surface.

In addition, a central region of the flexible wiring board that is in contact along the substrate mounting surface is wider than a width dimension of both side regions of the flexible wiring board that is bent by the holding portion.

In addition, the holding portion includes: a raised surface raised relative to the substrate mounting surface; and a recessed portion recessed relative to the substrate mounting surface between the raised surface and the substrate mounting surface.

The light-emitting unit according to the embodiment includes: a flexible wiring board on which a light-emitting element is mounted; a base configured so that a part of the flexible wiring board and a part of the back side of the surface on which the light-emitting element is mounted are in contact; A part is bent so as not to contact the abutment.

The straight-tube lamp in the embodiment includes: a straight-tube lampshade, at least a part of which has light transmission; the light-emitting unit is arranged in the straight-tube lampshade; and lamp caps are arranged at both ends of the straight-tube lampshade.

The lighting device in the embodiment comprises: a device body; a lamp holder arranged on the device body; and the straight tube lamp installed on the lamp holder.

The lighting device according to the embodiment includes: a device body; the light emitting unit arranged on the device body; and a translucent lampshade covering the light emitting unit.

[effect of utility model]

According to the present invention, the front ends of both sides of the flexible wiring board do not abut against the deepest part of the groove, and the holding part is used to bend both sides of the flexible wiring board and the back surface of the flexible wiring board is Since the flexible wiring board is held in contact with the board mounting surface, it is easy to insert the flexible wiring board into the base, improving assembly workability, and stable heat dissipation from the flexible wiring board to the base can be expected sex.

Description of drawings

FIG. 1 is a cross-sectional view showing a straight tube lamp using a light emitting unit according to a first embodiment.

Fig. 2 is a front view through the straight tube lamp cover of the above straight tube lamp.

Fig. 3 is a perspective view of a lighting device using the above straight tube lamp.

4 is a cross-sectional view showing a lighting device using a light emitting unit according to a second embodiment.

Fig. 5 is a perspective view of the same lighting device.

[explanation of the symbol]

10: lighting device

11: straight tube lamp

12: Appliance body

13, 14: lamp holder

15: Power circuit

20: straight tube lampshade

21: Lighting unit

22, 23: Lamp holder

26: Translucent area

27, 29: holding slot

28: protrusion

32: Lighting module

33: Abutment

35: Flexible wiring board

35a: surface

35b: Back

35c: Lateral area

35d: Central area

35e: both sides

35f: bending part

36: Light emitting element

38: Substrate mounting part

39: Keeping Department

40: base part

42: Substrate mounting surface

44: Groove

44a: deepest part

45: claw

46: Lifting surface

47: Depression

48, 50: Guidance Department

51: Installation Department

54: Power supply terminal

55: Holder

56: Connector

60: Lighting device

61: appliance body

62: Luminous Department

63: Reflection Department

64: translucent lampshade

Detailed ways

Hereinafter, a first embodiment will be described with reference to FIGS. 1 to 3 .

As shown in FIG. 3 , an elongated straight tube lamp 11 is used in the lighting device 10, and includes an elongated appliance body 12 and lamp sockets (sockets) 13 arranged at both ends of the appliance body 12 in the longitudinal direction. , the lamp holder 14, and the power supply circuit 15 arranged in the appliance body 12, etc.

1 and 2 show a straight tube type lamp 11 . The straight tube lamp 11 includes a straight tube lampshade 20 , a light emitting unit 21 inserted into the straight tube lampshade 20 , lamp caps 22 and 23 arranged at both ends of the straight tube lampshade 20 and the light emitting unit 21 .

The straight tube lampshade 20 is formed of a translucent resin material. As the resin material, for example, polycarbonate resin can be used. A light-diffusing material may also be contained in the resin material. The straight tube shade 20 is formed in the same cylindrical shape in the longitudinal direction. For example, extrusion molding can be used to form the straight tube lampshade 20 . Further, approximately half of the peripheral surface of the straight tube lampshade 20 is formed as a translucent region 26 through which light from the light emitting unit 21 passes. As long as at least the light-transmitting area 26 of the straight tube lampshade 20 has light-transmitting properties, other areas may not have light-transmitting properties.

The outer surface of the straight tube shade 20 is formed in a circular shape, and the inner surface is formed in a predetermined shape. On the inner surface of the straight tube lampshade 20, the wall thickness is gradually thickened from the center of the light-transmitting region 26 to both sides, and the light-emitting unit 21 (basically Taiwan) holding groove 27. In addition, on the inner surface of the straight tube lampshade 20, on the opposite side of the light-transmitting region 26, a pair of substantially L-shaped protrusions 28 are projected to face each other, and between these protrusions 28, the entire long side A holding groove 29 for holding the light emitting unit 21 (base) is formed in the direction.

The light emitting unit 21 includes a light emitting module 32 and a base 33 holding the light emitting module 32 .

The light emitting module 32 includes an elongated strip-shaped flexible wiring board 35 and a plurality of light emitting elements 36 mounted on the center of the width direction of the surface 35 a of the flexible wiring board 35 .

The flexible wiring board 35 is formed by laminating a film-like insulating material and a wiring pattern. The plurality of light emitting elements 36 are electrically connected to the wiring pattern, and the plurality of light emitting elements 36 are electrically connected in series, for example, by the wiring pattern. In addition, a high reflection film having a high light reflectance may be formed on the surface 35 a of the flexible wiring board 35 .

The light emitting element 36 can be, for example, a light emitting diode (Light Emitting Diode, LED) or an organic electroluminescence (Electroluminescence, EL). In this embodiment, LEDs are used, and a plurality of LEDs are mounted at predetermined intervals along the longitudinal direction at the center in the width direction of the surface 35 a of the flexible wiring board 35 .

The light emitting module 32 may be configured such that the strength of the lateral side regions 35c in the width direction of the flexible wiring board 35 is lower than the strength of the widthwise center region 35d. For example, it may be configured in such a way that the flexible wiring can be formed by forming a wiring pattern only in the central region 35d of the flexible wiring substrate 35 or by forming a high reflection film on the central region 35d of the surface 35a of the flexible wiring substrate 35. The strength of the side region 35c of the substrate 35 is lower than that of the center region 35d. Alternatively, the flexible wiring substrate 35 may be configured such that the thickness of the side region 35c is thinner than the thickness of the central region 35d, or holes are formed in the side region 35c of the flexible wiring substrate 35, so that The strength of the side region 35c of the flexible wiring board 35 is lower than the strength of the center region 35d. In addition, the width dimension of the central region 35 d of the flexible wiring substrate 35 is wider than the respective width dimensions of the side region regions 35 c of the flexible wiring substrate 35 .

The base 33 is formed of a metal material. As the metal material, for example, aluminum or the like can be used. The base 33 is integrally formed with the same shape in the longitudinal direction. For example, the base 33 is formed by extrusion molding. Furthermore, the base 33 includes a substrate mounting portion 38 , holding portions 39 formed on both sides of the substrate mounting portion 38 , and a base portion 40 supporting the substrate mounting portion 38 .

In the substrate mounting portion 38 , a planar substrate mounting surface 42 is formed which is in contact with the central region 35 d of the rear surface 35 b of the flexible wiring substrate 35 .

The holding portions 39 on both sides protrude more than the substrate mounting surface 42 of the substrate mounting portion 38 . Groove portions 44 in which both side portions 35 e of the flexible wiring board 35 are arranged are formed in the holding portions 39 on both sides. A claw portion 45 is protrudingly formed on the holding portion 39 , and the claw portion 45 faces the board mounting surface 42 via the groove portion 44 . Moreover, the surface side of the claw part 45 which opposes the light transmission area|region 26 of the straight tube lampshade 20 is formed as a reflective surface.

The groove portions 44 on both sides are formed to face each other and obliquely with respect to the substrate mounting surface 42 . Both side portions 35e of the flexible wiring board 35 disposed in the groove portion 44 are partially bent by the holding portions 39 on both sides, and bent portions 35f having a small curvature are formed on the both side portions 35e of the flexible wiring board 35 . By partially forming bent portions 35f on both side portions 35e of the flexible wiring board 35, the flexible wiring board 35 is kept in a state where the rear surface 35b of the central region 35d is in contact with the board mounting surface 42. wire substrate 35 .

When the flexible wiring board 35 is assembled in the center of the width direction of the base 33, there is such a relationship that the front ends of the side parts 35e of the flexible wiring board 35 are away from the deepest part 44a of the groove part 44 of the holding part 39, and do not touch It is connected to the deepest part 44a. Even when the flexible wiring board 35 is assembled on one side with respect to the center of the width direction of the base 33, there is a relationship that at least one of the front ends of the both side parts 35e of the flexible wiring board 35 is far away from the holding part 39. The deepest portion 44a of the groove portion 44 does not come into contact with the deepest portion 44a. In other words, there is a gap between the front ends of both side portions 35 e of the flexible wiring board 35 and the deepest portion 44 a of the groove portion 44 . Alternatively, there is a relationship in which the maximum width dimension between the deepest portions 44a of the groove portions 44 on both sides is wider than the width dimension between the front ends of the both side portions 35e of the flexible wiring board 35 arranged in the groove portions 44 on both sides.

The holding portion 39 includes: a raised surface 46 raised relative to the substrate mounting surface 42 ; and a recessed portion 47 recessed relative to the substrate mounting surface 42 between the raised surface 46 and the substrate mounting surface 42 .

On the holding portion 39 , a guide portion 48 is formed, and the guide portion 48 is fitted into the holding groove 27 of the straight tube shade 20 so as to be slidable in the longitudinal direction.

The base portion 40 protrudes from the center of the substrate mounting portion 38 on the side opposite to the substrate mounting surface 42 . A guide portion 50 is formed at the front end of the base portion 40 , and the guide portion 50 is fitted into the holding groove 29 of the straight tube lampshade 20 so as to be slidable in the longitudinal direction. The guide portion 50 is formed in a bifilar shape. In the base part 40, the attachment part 51 for screwing the base 22 and the base 23 to the base 33 is formed.

Moreover, the base 22 and the base 23 are the base GX16t-5 of the Japan Lighting Industry Association standard. The base 22 and the base 23 are each formed in a bottomed cylindrical shape from an electrically insulating synthetic resin such as polybutylene terephthalate (PBT) resin. Both ends in the longitudinal direction of the straight tube lampshade 20 and the light emitting unit 21 are inserted into the base 22 and the base 23 . Moreover, the lamp cap 22 and the lamp cap 23 are respectively fixed on the base 33 by screwing screws with self-tapping screws (self tap) on the mounting portion 51 of the base 33.

The base 22 is a power supply terminal side base, and is provided with a pair of power supply terminals 54 . The pair of power supply terminals 54 are made of, for example, brass, are formed in an L-shape, and protrude from the base 22 so as to face opposite to each other. The pair of power supply terminals 54 are connected to a connector 56 mounted on the surface 35 a of the flexible wiring board 35 by connecting wires (not shown) laid in the base 22 and the straight tube lamp housing 20 .

The base 23 is a non-power supply terminal side base or an earth terminal side base, and is provided with one holder 55 . The holder 55 is formed in a rectangular parallelepiped and protrudes from the base 23 .

Next, the operation of this embodiment will be described.

When assembling the light emitting unit 21 , the light emitting module 32 is inserted from one end side of the base 33 .

That is, the central region 35d of the end portion of the flexible wiring board 35 is inserted on the board mounting surface 42 of the base 33, and the both side portions 35e of the end portion of the flexible wiring board 35 are inserted into the holding positions on both sides. Groove portion 44 of portion 39.

At this time, it is only necessary to insert the central region 35d of the flexible wiring substrate 35 into the substrate mounting surface 42 of the base 33 by cutting both sides of the end of the flexible wiring substrate 35 into a tapered shape. Therefore, both side portions 35e of the flexible wiring board 35 are automatically inserted into the grooves 44 of the holding portions 39 on both sides, thereby facilitating the insertion operation of the end portion of the flexible wiring board 35 .

After inserting the end of the flexible wiring board 35 into the base 33 , the flexible wiring board 35 is directly slid along the base 33 to arrange the flexible wiring board 35 at a predetermined position on the base 33 .

At this time, although the flexible wiring board 35 is held by the holding portion 39 in a state where both sides 35 e of the flexible wiring board 35 are bent and the back surface 35 b of the flexible wiring board 35 is in contact with the board mounting surface 42 , However, the flexible wiring board 35 does not come into contact with the holding parts 39 on both sides because the front ends of the side parts 35e of the flexible wiring board 35 do not abut against the deepest parts 44a of the groove parts 44 on both sides. In this state, the sliding resistance of the both side portions 35e of the flexible wiring board 35 relative to the holding portion 39 is low, and the both side portions 35e of the flexible wiring board 35 are not easily caught in the holding portion 39, and the flexible wiring board 35 can be easily Slide to a predetermined position in the base 33 .

In the state where the flexible wiring board 35 is arranged at a predetermined position in the base 33, the both sides 35e of the flexible wiring board 35 are bent by the holding part 39, and the back surface 35b of the flexible wiring board 35 is along the board. The flexible wiring board 35 is held in a state of being in contact with the mounting surface 42 .

In this way, according to the light emitting unit 21 of this embodiment, the front ends of the both side portions 35e of the flexible wiring board 35 do not contact the deepest portions 44a of the groove portions 44 on both sides, and the flexible wiring board 35 is held by the holding portion 39 . The flexible wiring substrate 35 is held in a state where both side portions 35e of the flexible wiring substrate 35 are bent and the back surface 35b of the flexible wiring substrate 35 is in contact with the substrate mounting surface 42, so that the flexible wiring substrate 35 can be easily inserted into the base 33, Accordingly, assembly workability can be improved, and stable heat dissipation from flexible wiring board 35 to base 33 can be obtained.

Furthermore, the width dimension of the central region 35 d of the flexible wiring board 35 that contacts along the board mounting surface 42 is wider than the width dimension of the side region 35 c of the flexible wiring board 35 bent by the holding portion 39 . As a result, both side portions 35 e of the flexible wiring board 35 disposed in the groove portion 44 are partially bent by the holding portions 39 on both sides, and bent portions having a small curvature are formed on the both side portions 35 e of the flexible wiring board 35 . 35f. In this way, since the bent portions 35f are partially formed on both side portions 35e of the flexible wiring board 35, the rear surface 35b of the central region 35d of the flexible wiring board 35 can be in contact with the board mounting surface 42. The flexible wiring substrate 35 is held.

Furthermore, the holding portion 39 includes: a raised surface 46 raised relative to the substrate mounting surface 42 ; and a recessed portion 47 recessed relative to the substrate mounting surface 42 between the raised surface 46 and the substrate mounting surface 42 . Therefore, a light emitting module using a relatively strong hard substrate instead of the flexible wiring board 35 can be combined with the base 33 , and the base 33 can be shared. The structure is such that the position of both sides of the hard substrate in the width direction is restricted by the raised surface 46, and the two sides of the back surface of the hard substrate are arranged in the recessed portion 47, so that the central region of the hard substrate can be closely attached to the base 33. .

Moreover, when assembling the straight tube lamp 11, the light emitting unit 21 is inserted into the straight tube lampshade 20, the lamp cap 22 is electrically connected to the flexible wiring board 35, and the lamp caps 22 and 23 are attached to both ends of the straight tube lampshade 20. , screw the lamp cap 22 and the lamp cap 23 on the abutment 33 .

Furthermore, as shown in FIG. 3 , the base 22 and the base 23 of the straight tube lamp 11 are mounted on the sockets 13 and 14 of the lighting device 10 .

Lighting power is supplied from the power supply circuit 15 to the straight tube lamp 11 via the socket 13 to light the plurality of light emitting elements 36 . The light generated by the plurality of light-emitting elements 36 enters the light-transmitting region 26 of the straight tube lampshade 20 , diffuses in the light-transmitting region 26 and then passes through the light-transmitting region 26 to illuminate the lighting space.

The heat generated when the plurality of light emitting elements 36 are turned on is transferred from the flexible wiring board 35 to the base 33 , and is transferred from the base 33 to the straight tube lampshade 20 or the bases 22 and 23 before being dissipated.

At this time, since the flexible wiring board 35 is held by the holding portion 39 in a state where both sides 35 e of the flexible wiring board 35 are bent and the back surface 35 b of the flexible wiring board 35 is in contact with the board mounting surface 42 , Therefore, the heat generated by the light emitting element 36 can be efficiently transferred to the base 33 through the flexible wiring substrate 35 , thereby ensuring high heat dissipation performance of the light emitting element 36 .

Next, a second embodiment is shown in FIGS. 4 and 5 . In addition, the same code|symbol is used for the same structure and operation effect as 1st Embodiment, and the description is abbreviate|omitted.

The lighting device 60 is a thin and elongated device installed on the top surface. The illuminating device 60 has a fixture body 61 provided on the top surface, light emitting portions 62 are formed on both sides in the width direction of the fixture body 61 , and a triangular reflection portion 63 is formed in the center.

The light emitting unit 62 includes the light emitting unit 21 attached to the appliance main body 61 , and the translucent shade 64 which covers the light emitting unit 21 and is attached to the appliance main body 61 .

Similar to the first embodiment, the light emitting unit 21 includes a light emitting module 32 and a base 33 . The base 33 may not have the base part 40 as long as it includes the base mounting part 38 and the holding parts 39 on both sides. The base 33 is arranged along the longitudinal direction of the appliance body 61 and is fixed while being thermally connected to the appliance body 61 . Therefore, the heat generated when the light emitting element 36 is turned on is transmitted to the device main body 61 via the flexible wiring board 35 and the base 33 and then dissipated.

Moreover, also in this lighting device 60 , the same effect as that of the first embodiment can be obtained.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in other various forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope or gist of the invention, and are included in the invention described in the claims and the scope of equivalents thereof.

Claims (7)

1. A light emitting unit, characterized in that, comprising: A light-emitting module, with a light-emitting element mounted on the surface of the flexible wiring substrate; and The base has a planar substrate mounting surface and holding portions on both sides, the planar substrate mounting surface contacts the back surface of the flexible wiring substrate, the holding portions on both sides are provided with grooves, and the Both sides of the flexible wiring board in contact with the substrate mounting surface are arranged in the groove, and the front ends of the two sides of the flexible wiring board are not in contact with the deepest part of the groove. The holding portion holds the flexible wiring board in a state where both sides of the flexible wiring board are bent and the back surface of the flexible wiring board is in contact along the board mounting surface. 2. The lighting unit according to claim 1, characterized in that: A central region of the flexible wiring board that is in contact along the board mounting surface has a wider width than side regions of the flexible wiring board that are bent by the holding portion. 3. The lighting unit according to claim 1 or 2, characterized in that: The holding portion includes: a raised surface raised relative to the substrate mounting surface; and a recessed portion recessed relative to the substrate mounting surface between the raised surface and the substrate mounting surface. 4. A light emitting unit, characterized in that it comprises: A flexible wiring substrate installed with light-emitting elements; The base is configured so that a part of the flexible wiring board and a part of the back side of the surface on which the light-emitting element is mounted are in contact; A part of the flexible wiring board is bent so as not to contact the base. 5. A straight tube lamp, characterized in that it comprises: Straight tube lampshade, at least partially transparent; The light emitting unit according to any one of claims 1 to 4, configured in the straight tube lampshade; and Lamp holders are arranged at both ends of the straight tube lampshade. 6. A lighting device, characterized in that it comprises: appliance body; a lampholder provided on the body of said appliance; and The straight tube lamp according to claim 5, which is mounted on the lamp holder. 7. A lighting device, characterized in that it comprises: appliance body; The light emitting unit according to any one of claims 1 to 5, which is arranged on the appliance body; and The light-transmitting lampshade covers the light-emitting unit.