JP5946556B2 - Lighting lamp - Google Patents

Description

  The present invention relates to an illumination lamp such as an LED lamp.

When a circuit is arranged on a substrate of a straight tube type LED lamp, the circuit component may be seen through. When the lamp tube is blindfolded, the brightness of the lamp decreases.
Further, if the base is covered with a base in order to conceal the circuit components, the base becomes longer in the longitudinal direction of the lamp tube.

JP 2011-96614 A JP 2010-140843 A

  An object of the present invention is to provide an illumination lamp that prevents circuit components from being seen through when a circuit is arranged on the substrate of the illumination lamp.

The illumination lamp according to the present invention is:
A light emitting unit comprising: a light emitting diode; a substrate on which the light emitting diode is attached; and a long pedestal on which the substrate is provided;
A long semi-transparent tube covering the surface of the substrate;
Covering a circuit component for lighting the light emitting diode, and disposed at the end in the longitudinal direction of the tube, and a blindfold covered with the tube,
A base provided at an end in the longitudinal direction of the tube,
With
The blindfold has a reflecting surface inclined with respect to the surface of the pedestal,
The shape of the reflecting surface viewed from the tube axis direction of the cylindrical tube has a D-shape,
The reflective surface emits light emitted from the light emitting part toward the outside of the tube.

  In the illumination lamp according to the present invention, since the blindfold plate is arranged, when the circuit is arranged on the substrate of the illumination lamp, the circuit component can be hidden on the back side of the blindfold plate.

FIG. 3 shows an illumination lamp 50 according to the first embodiment. FIG. 3 is an exploded view of the illumination lamp 50 according to the first embodiment. The figure which shows the AA longitudinal cross-section of the illumination lamp 50 of Embodiment 1. FIG. The figure which shows the ZZ longitudinal cross-section of the illumination lamp 50 of Embodiment 1. FIG. FIG. 3 is an exploded view of the illumination lamp 50 according to the first embodiment. The figure which shows the AA longitudinal cross-section of the illumination lamp 50 of Embodiment 1. FIG. The figure which shows the ZZ longitudinal cross-section of the illumination lamp 50 of Embodiment 1. FIG. FIG. 5 shows an illumination lamp 50 according to a second embodiment. The figure which shows the AA longitudinal cross-section of the illumination lamp 50 of Embodiment 2. FIG. FIG. 6 shows an illumination lamp 50 according to a third embodiment. FIG. 5 is a diagram showing an outline of an illumination lamp 50 according to a third embodiment. The figure which shows ZZ longitudinal cross-section of the illumination lamp 50 of Embodiment 4. FIG. The figure which shows ZZ longitudinal cross-section of the illumination lamp 50 of Embodiment 4. FIG. The exploded view of the illumination lamp 50 of Embodiment 4. FIG. The perspective view of the blindfold board 80 of Embodiment 4. FIG.

Embodiment 1 FIG.
FIG. 1 is a diagram showing an illumination lamp 50 according to the first embodiment.
The illumination lamp 50 has a cylindrical glass tube 56. The glass tube 56 is a straight glass tube and is an example of a tube tube.

The light emitting unit 60 includes a light emitting diode 51 (LED 51), a substrate 52, and a heat sink 54.
The light emitting unit 60 is housed in the glass tube 56 and emits light. The light emitting unit 60 extends in the longitudinal direction of the glass tube 56.

The LED 51 is composed of a single LED (light emitting diode) or an LED module.
The substrate 52 has a plurality of LEDs 51 arranged and arranged uniformly. There is a circuit 70 at one end (right end) of the substrate 52. For this reason, the LED 51 cannot be disposed at one end (right end) of the substrate 52.
The circuit 70 is mounted with a circuit component 71 and a circuit component 72 made of electronic components. A specific example of the circuit 70 is a circuit that eliminates the polarity of the direct current supplied to the LED 51. Specific examples of the circuit component 71 and the circuit component 72 are electronic circuit components such as a resistance element, a semiconductor element, and a capacitor.

  The heat sink 54 is made of metal such as aluminum and serves as a pedestal to which the substrate 52 is attached and a heat radiating member.

There are a pair of caps 55 at both ends of the glass tube 56.
Each base 55 includes a pair of power supply terminals 58. The number and shape of the power supply terminals 58 are not limited to the drawing and may be other numbers or shapes.

  The pair of caps 55 covers both ends of the glass tube 56 and is fixed to both ends of the heat sink 54 of the light emitting unit 60.

  A diffusion film (not shown) is provided on the inner surface of the glass tube 56, and the diffusion film diffuses light from the LED 51. Although the appearance of the glass tube 56 becomes cloudy or translucent due to the diffusion film, there are cases where the components inside the glass tube 56, the substrate 52, etc. can be seen through. In particular, the electronic component mounted on the substrate 52 may be seen through because the distance from the glass tube 56 is small.

The blindfold plate 80 is attached obliquely toward the base 55 from between the rightmost LED 51 and the circuit 70. The blindfold plate 80 is a flat plate that hides the circuit 70.
The surface (surface) in the light emitting surface direction of the blindfold plate 80 is a reflecting surface.
The substrate side surface (back surface) of the blindfold plate 80 covers the circuit component 71 and the circuit component 72.

A circuit component 71 and a circuit component 72 are arranged in a substantially triangular prism region of the substrate 52, the blindfold plate 80, and the base 55.
Of the circuit component 71 and the circuit component 72, the taller circuit component 72 is arranged near the base 55.

The illumination lamp 50 has a structure in which a control device necessary for stable operation is not integrated. That is, the illumination lamp 50 is supplied with a constant DC current for turning on the LED 51 from an external power supply via the power supply terminal 58 and the circuit 70 and is lit.
The circuit 70 may receive power from the power supply terminal 58, but may also receive power from a connector not shown.

  The illumination lamp 50 has a structure that prevents dust from entering the lamp that impairs safety during use from the viewpoint of long-term use. That is, the glass tube 56 and the base 55 are bonded together, and the light emitting unit 60 is sealed.

The illumination lamp 50 is a straight tube illumination lamp having a glass outline and a conventional outer shape. The illumination lamp 50 is a straight tube LED lamp system that cannot be permanently disassembled without impairing its function.
The illumination lamp 50 has a glass outer shell and does not deform the outer shape of the straight tube illumination lamp. Further, the shape of the base 55 is not deformed.

FIG. 2 is an exploded view of the illumination lamp 50 of the first embodiment.
The blindfold plate 80 has a lower adhesive margin 97, an upper adhesive margin 98, and a cover portion 99. The cover part 99 is a tongue-like flat plate as a whole and provides an inclined surface. The cover 99 includes a bottom side 82 and a pair of rounded side edges 81 that are rounded.

The blindfold plate 80 has a lower adhesive margin 97 protruding downward from the bottom side 82.
The lower adhesive margin 97 is located below the bottom side 82 of the cover part 99. The lower margin 97 has the same width as the width of the substrate 52 and is bent and bonded to the substrate 52. Thereafter, the light emitting unit 60 is inserted into the glass tube 56.

  The upper adhesive allowance 98 protrudes from the upper part of the cover part 99. The upper margin 98 has a width that is one fifth of the width of the lower margin 97 and is bent and bonded to the base 55 or the glass tube 56.

FIG. 3 is a partially omitted view showing an AA longitudinal section (a section taken along a plane perpendicular to the tube axis) in which the light emitting unit 60 of the illumination lamp 50 of the first embodiment is inserted into the glass tube 56.
The arc-shaped side edges 81 on both sides of the cover 99 abut (substantially) the inner surface of the glass tube 56. The length of the bottom side 82 of the cover part 99 is larger than the width of the substrate 52 and preferably reaches the inner surface of the glass tube 56, but there may be a slight gap as shown in the figure.

  The cover 99 has a tongue-like shape but is arranged obliquely, so that, as shown in FIG. 3, when viewed from the longitudinal direction (tube axis direction), the arc-shaped side edge 81 has a circle centered on the tube axis. It becomes a D-shape with a circular arc.

FIG. 4 is a diagram illustrating a ZZ vertical section of the illumination lamp 50 according to the first embodiment.
The lower margin 97 is bonded to the substrate 52. The upper adhesive allowance 98 is inserted into the concave portion 94 of the base 55 together with the upper adhesive allowance 98 and bonded to the concave portion 94 with silicone. The upper adhesive allowance 98 may be up to the glass end face 57, or the upper adhesive allowance 98 may be from the glass end face 57 to the outer surface of the glass tube 56.

The upper adhesive margin 98 exists in the recess 94 and is not exposed from the annular outer wall portion 93.
The blind plate 80 conceals the circuit component 71 and the circuit component 72 and also conceals lead wires, screws, and the inner end surface 91.
For example, the angle (tilt angle θ) between the blindfold plate 80 and the substrate 52 is along the light distribution angle α of the LED 51 at the right end.
That is,
Tilt angle θ = 90 degrees-(light distribution angle α ÷ 2)
It is.

The blindfold plate 80 is for blindfolding from the base 55 to the portion where the circuit 70 is located.
The blindfold plate 80 reflects or diffuses the light of the LED 51 in the direction of the light emitting surface, and prevents parts from being seen through when turned off.
A circuit 70 such as a circuit that eliminates the polarity can be mounted on the substrate 52, and the cost can be reduced as compared with the case where the circuit 70 is formed on another substrate.

Further, it is not necessary to project the annular outer wall portion 93 of the base 55 in the direction in which the circuit 70 is present from the inner end surface 91, and it is not necessary to lengthen the base 55 in the longitudinal direction of the lamp tube.
Further, even if the circuit 70 is present, the blindfold plate 80 is a reflecting plate, so that light is also emitted from the circuit 70 portion, so that the circuit 70 portion is not darkened.
If the color of the surface of the blindfold plate 80 is the same as or similar to the color of the substrate, the blindfold plate 80 itself becomes difficult to be seen from the outside.

  The blindfold plate 80 may be a mirror-finished reflection plate, or may be a diffuse reflection plate that diffuses and reflects light.

*** Variation example of blindfold plate 80 ***
5, 6, and 7 are diagrams in which the shape of the blindfold plate 80 is changed.
As shown in FIG. 5, in the blindfold plate 80, the lower adhesive margin 97 does not protrude downward from the bottom side 82. The bottom 82 of the blindfold plate 80 has a recess toward the cover portion 99, and the lower adhesive margin 97 of the blindfold plate 80 bites into the cover portion 99.

As shown in FIGS. 6 and 7, the arc-shaped side sides 81 on both sides of the cover portion 99 reach the board mounting surface 69 of the heat sink 54, and the bottom side 82 of the blindfold plate 80 is the board mounting surface 69 of the heat sink 54. Is in contact with.
Others are the same as FIG. 2, FIG. 3, FIG.

Embodiment 2. FIG.
FIG. 8 is a diagram illustrating the illumination lamp 50 according to the second embodiment.
FIG. 9 is a diagram showing a vertical AA section of the illumination lamp 50 according to the second embodiment.

As shown in FIG. 8, the blindfold plate 80 may have a curved surface instead of a flat plate. For example, as shown in FIG. 8, the blindfold plate 80 is manufactured by curving a trapezoidal flat plate.
Both oblique sides of the trapezoidal flat plate are the bottom sides, and both ends of the long side (lower base) are a pair of side sides 81. The bottom side is U-shaped or U-shaped, and the pair of side sides 81 are curved in a U-shape.
As a result, as shown in FIG. 9, the pair of side sides 81 are parallel or substantially parallel. Since the distance between the pair of side edges 81 is equal to or less than the width of the substrate 52, the bottom sides can be bonded to the substrate 52.

Alternatively, for example, a triangular or fan-shaped flat plate may be curved instead of a trapezoid. Moreover, you may make it curve not in U shape but in C shape.
Alternatively, for example, the blindfold plate 80 may have a shape obtained by cutting a cone by a plane passing through the rotation axis or a plane parallel to the rotation axis. Further, instead of a cone, a shape obtained by cutting a triangular pyramid, a quadrangular pyramid, or other polygonal pyramids by a plane may be used.

  Since the blindfold plate 80 of this embodiment is a curved surface, the side surfaces of the circuit component 71 and the circuit component 72 can also be covered.

Embodiment 3 FIG.
FIG. 10 shows an illumination lamp 50 according to the third embodiment.
As shown in FIG. 10, the blindfold plate 80 may have a curved surface that provides a concave surface with respect to the light emitting surface direction instead of the flat plate. For example, the blindfold plate 80 is a flat plate curved in a unified direction.

  As shown in the conceptual diagram of FIG. 11, the concave curved surface of the blindfold plate 80 is a part of a rotating paraboloid with the LED 51 closest to the blindfold plate 80 as the focal point F, or a rotating ellipse with the closest LED 51 as the focal point F. Part of the face. Since the LED 51 is at the focal point F, the reflected light of the blindfold plate 80 becomes parallel light parallel to the light emitting surface direction.

Embodiment 4 FIG.
As shown in FIG. 12, the blindfold plate 80 may be bent halfway, and the upper adhesive allowance 98 may be bonded to the inner end surface 91.
As shown in FIG. 13, the blindfold plate 80 may be curved and the upper margin 98 may be bonded to the inner end surface 91.

In the case of FIGS. 12 and 13, the blindfold plate 80 does not come into contact with the inner surface of the glass tube 56 in the light emitting surface direction, so that there is an effect of making the blindfold plate 80 difficult to see.
As shown in FIG. 14, the blindfold plate 80 shown in FIG. 8 may be turned upside down so that the concave surface faces the light emitting surface direction. That is, the shape of the blindfold plate 80 is a U-shape in which a cross section by a plane orthogonal to the tube axis is concave with respect to the light emitting surface direction.

As shown in FIG. 15A, the shape of the cover 99 of the blindfold plate 80 may simply be a flat plate.
As shown in FIG. 15B, the shape of the cover portion 99 of the blindfold plate 80 may be a U-shaped cross section.
As shown in FIG. 15C, the shape of the cover part 99 of the blindfold plate 80 may be a part of a cone (convex part).
As shown in FIG. 15D, the shape of the cover part 99 of the blindfold plate 80 may be a part of a cone (concave part).

The shape of the cover part 99 of the blindfold plate 80 may be not only U-shaped and U-shaped but also V-shaped, C-shaped, M-shaped, W-shaped, etc. .
The glass tube 56 may be polycarbonate resin instead of glass, and may be a cylindrical tube.
The glass tube 56 may have no diffusion film, and the glass tube 56 may be transparent.
Both the lower margin 97 and the upper margin 98 of the blindfold plate 80 may be omitted, the upper margin 98 may not be present, and conversely, the lower margin 97 may not be present.
The blindfold plate 80 may be arranged not only on one side but also on both sides.

Further, the blindfold plate 80 does not have to reach the base 55. The overall shape of the blindfold plate 80 is a dome shape, a kamaboko shape, a lid shape, a saddle shape, a bell shape, a hat shape, a cap shape, a cylindrical shape, a conical shape. The circuit component 71 and the circuit component 72 may be concealed inside.
Moreover, you may use combining embodiment mentioned above.

As described above, the illumination lamp of the embodiment described above is
A cylindrical tube such as a glass tube 56 or a polycarbonate resin tube;
A base 55 fixed to both ends of the tube,
A light emitting unit 60 that is housed in a tube and emits light, the light emitting unit 60 extending in the longitudinal direction of the tube,
A blindfold plate 80 covering at least one end of the light emitting unit 60 is provided.

The light emitting unit 60
LED 51,
A circuit component 71 for lighting the LED 51, a circuit component 72, and
LED 51 is mounted, circuit component 71, and substrate 52 having circuit component 72 mounted on the end,
The blindfold plate 80 has a cover portion 99 (inclined surface) that is inclined obliquely from the surface of the substrate 52 toward the base 55 and from the surface of the substrate 52 toward the light emitting surface.

  The cover part 99 (inclined surface) of the blindfold plate 80 has a reflection surface that reflects the light of the LED 51 in the light emitting surface direction. The reflecting surface is a diffusing surface.

  The blindfold plate 80 is characterized by being fixed to at least one of the substrate 52 and the base 55 with an adhesive.

  The blindfold plate 80 is a flat plate or a curved plate disposed obliquely along the light distribution angle of the LED 51.

  The blindfold has a part of a rotating paraboloid focusing on the nearest LED 51 or a part of a spheroid surface focusing on the nearest LED.

  50 illumination lamp, 51 LED, 52 substrate, 54 heat sink, 55 base, 56 glass tube, 57 glass end face, 58 power supply terminal, 59 silicone, 60 light emitting part, 70 circuit, 71 circuit component, 72 circuit component, 80 blindfold plate, 81 side edge, 82 bottom edge, 91 inner end face, 93 annular outer wall, 94 recess, 97 lower adhesive allowance, 98 upper adhesive allowance, 99 cover part.

Claims (11)

A light emitting unit comprising: a light emitting diode; a substrate on which the light emitting diode is attached; and a long pedestal on which the substrate is provided;
A long semi-transparent tube covering the surface of the substrate;
Covering a circuit component for lighting the light emitting diode, and disposed at the end in the longitudinal direction of the tube, and a blindfold covered with the tube,
A base provided at an end in the longitudinal direction of the tube,
With
The blindfold has a reflecting surface inclined with respect to the surface of the pedestal,
The shape of the reflecting surface viewed from the tube axis direction of the cylindrical tube has a D-shape,
The reflection surface causes the light emitted from the light emitting unit to emit light toward the outside of the tube.   2. The illumination lamp according to claim 1, wherein a distance between the reflecting surface and the inner surface of the cylindrical tube in a direction perpendicular to the surface of the pedestal is larger toward a center in a longitudinal direction of the cylindrical tube.   3. The illumination lamp according to claim 1, wherein a distance between the reflecting surface and the inner surface of the cylindrical tube in a direction perpendicular to the surface of the pedestal is smaller as approaching a longitudinal end portion of the cylindrical tube.   The illumination lamp according to claim 1, wherein the reflecting surface is a flat surface.   The illumination lamp according to claim 1, wherein the reflection surface is a curved surface having a convex portion.   The illumination lamp according to claim 1, wherein the reflecting surface is a curved surface having a recess.   The illumination lamp according to any one of claims 1 to 6, wherein the circuit component covered with the blindfold plate converts electric power supplied from an external power source into predetermined electric power for lighting the light emitting diode. A light emitting diode;
A substrate in which the light emitting diode is disposed on the surface, and a circuit component for lighting the light emitting diode is disposed at an end of the surface;
A long cylindrical tube covering the surface of the substrate;
An inclined surface disposed at an end of the substrate and covering the circuit component;
With
The inclined surface is inclined with respect to the surface of the substrate ;
The illumination lamp characterized in that the shape of the inclined surface viewed from the tube axis direction of the cylindrical tube is a D-shape . A light emitting diode;
A substrate in which the light emitting diode is disposed on the surface, and a circuit component for lighting the light emitting diode is disposed at an end of the surface;
A long cylindrical tube covering the surface of the substrate;
A blindfold plate that is disposed at an end in the longitudinal direction of the tube and covers the circuit component;
With
The blind plate have a slanted surface inclined with respect to the surface of the substrate,
The illumination lamp characterized in that the shape of the inclined surface viewed from the tube axis direction of the cylindrical tube is a D-shape . A light emitting diode;
A substrate in which the light emitting diode is disposed on the surface, and a circuit component for lighting the light emitting diode is disposed at an end of the surface;
A long cylindrical tube covering the surface of the substrate;
A blindfold plate that is disposed at an end in the longitudinal direction of the tube and covers the circuit component;
With
The blind plate have a slanted surface inclined with respect to the surface of the substrate,
The cross-sectional shape of the inclined surface by a plane orthogonal to the tube axis of the cylindrical tube is any one of a U shape, a U shape, a V shape, a C shape, an M shape, and a W shape. lighting lamp, characterized in that there. The illumination lamp according to claim 8, 9 or 10, wherein the inclined surface has a reflection surface for reflecting light emitted from the light emitting diode.

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