JP5341017B2 - LED lighting device - Google Patents

Description

  The present invention relates to an LED lighting device, and more particularly to an LED lighting device that can easily visually recognize from the outside that the lighting device includes an LED light emitting element.

  A fluorescent lamp type LED lighting apparatus using a light emitting diode (LED) as a light source has been proposed (see Japanese Patent Application Laid-Open No. 2007-257928). In general, light emitting diodes have recently attracted attention as a light source for lighting devices because they consume less power and have a longer lifetime than fluorescent lamps.

  However, in the conventional LED lighting device, when a semi-transparent material such as milky white is adopted as the lighting tube incorporating the LED, it is clearly identified that the light emitter housed in the lighting tube is an LED. It becomes difficult to do. For this reason, when it is mixed with the conventional fluorescent tube, the selection is not easy.

  Moreover, as an LED illumination device, Japanese Patent Application Laid-Open No. 2007-122933 discloses a device in which a substrate on which an LED is mounted is rotatably provided. In the apparatus, by appropriately rotating the substrate by a desired angle, the emitted light from the LED having directivity can be irradiated in the direction desired by the user.

  However, in this case, when the illumination device is provided with a translucent cover such as milky white, the LED inside the cover is difficult to see from the outside. Cannot be accurately identified. On the other hand, there is a case where it is desired to make the brightness of the illumination lamp as bright as possible depending on the content of work in the field of manufacturing or assembly, or in a work place where detailed work is performed. In general, an LED illuminating lamp having directivity has the brightest optical axis direction of the LED. Therefore, it is very convenient if the optical axis direction can be specified when the LED mounting substrate is rotated.

  The present invention has been made in view of such a conventional situation, and the problem to be solved by the present invention is an LED illumination device that can easily visually recognize from the outside that the illumination device incorporates an LED light emitting element. Is to provide. Further, the present invention is intended to make it possible to easily specify the optical axis direction of the LED light emitting element in the LED lighting device in which the lighting tube containing the LED can be rotated relative to the cap portions at both ends thereof.

An LED lighting device according to a first aspect of the present invention includes a plurality of LED light emitting elements including an externally visible LED light emitting element and an illumination LED light emitting element, and a translucent illumination tube incorporating these LED light emitting elements. , provided on a portion of the light tube, a visible part that transmits the light emitted from the LED devices for external viewing the outside is provided inside the light tube, light emitted from the LED devices for external viewing And a light guiding means for guiding to the visual recognition unit .

According to the first aspect of the present invention, the LED light-emitting element for external visual recognition is provided, and the visual recognition part that transmits the light emitted from the external visual LED light-emitting element to the outside is part of the translucent lighting tube . Since it is provided, the user can visually recognize the emitted light from the external light-emitting LED light-emitting element through the visual recognition unit, so that the illumination device is an LED lighting device incorporating the LED light-emitting element. Can be easily seen from the outside. In this case, since a visual recognition part is provided in an illumination tube, visual recognition that it is an LED lighting apparatus can be performed easily from the outside.

In this case, since the light guide means for guiding the emitted light from the external light-emitting LED light emitting element to the visual recognition portion is provided inside the illumination tube, the light guide means allows external visual recognition. Since the emitted light from the LED light emitting element can be reliably guided to the visual recognition part, the visual recognition of the LED emitted light by the visual recognition part is further facilitated.

According to a second aspect of the present invention, in the first aspect of the present invention, in the first aspect, the visual recognition portion has a hole formed through the illumination tube at a position facing the external light-emitting LED light-emitting element, or a position facing the external visual LED light-emitting element. The slit extends in the circumferential direction along the circumferential surface of the lighting tube and is formed through the lighting tube.

  According to a third aspect of the present invention, in the first or second aspect, the end portion of the illumination tube is provided with a base portion having an electrode detachably connected to an external socket portion at one end, and the illumination tube and the base portion Are provided so as to be relatively rotatable.

  In this case, by rotating the illumination tube and / or the base part by a desired amount, the irradiation direction of the LED light emitting element for illumination can be changed to a desired direction, and the light distribution characteristics can be changed. At this time, since the visual recognition part is provided in the illumination tube, even when the illumination tube is rotated, the visual recognition of the LED illumination device can be easily performed from the outside.

  Further, in this case, when the light guide means is provided inside the illumination tube, the light guide means can reliably guide the emitted light from the LED light emitting element for external visual recognition to the visual recognition part. Even when the illuminating tube is rotated, the LED emitted light can be easily visually recognized by the visual recognition unit.

According to a fourth aspect of the present invention, in any one of the first to third aspects , the light guide unit orients the emitted light from the externally visible LED light emitting element in the optical axis direction of the externally visible LED light emitting element. Has directivity.

  In this case, since the light guide means has a narrow directivity (high directivity), the optical axis direction of the LED light emitting element for external visual recognition is made to coincide with the visual recognition part, so that the light is transmitted through the visual recognition part. The axial direction becomes clear, which makes it possible to clearly check the direction of light emitted from the LED light emitting element for illumination (that is, the irradiation direction).

  In use, the user looks at the inside of the illumination tube through the visual recognition unit and aligns the optical axis direction of the LED light emitting element for external viewing with the direction desired by the user, so that the optical axis direction of the LED light emitting element for illumination is adjusted. The (irradiation direction) can be directed in the direction desired by the user.

  According to a fifth aspect of the present invention, in the first aspect, the LED light emitting element for external visual recognition is composed of an LED light emitting element having the same color as the LED light emitting element for illumination.

  In this case, since all the LED light emitting elements accommodated in the illumination tube are composed of the same color, there is no need to prepare LED light emitting elements of different colors, there is no risk of misassembly, and assembly / inspection costs. Can be reduced. Also, in this case, for example, if the phosphor is arranged only on the LED light emitting element for illumination, the LED light emitting element for external viewing and the LED light emitting element for illumination using the LED light emitting element of the same color are used. Different colors can be emitted.

  As described above, according to the LED lighting device of the present invention, the LED light emitting element for external visual recognition is provided, and the visual recognition part that transmits the emitted light from the LED light emitting element for external visual recognition to the outside is provided in the illumination tube. Since it did in this way, the user can visually recognize the emitted light from the LED light emitting element for external visual recognition through the visual recognition part, and thus, the illumination device is an LED lighting device incorporating the LED light emitting element. It will be easily visible from the outside. In this case, since a visual recognition part is provided in an illumination tube, the visual recognition that it is an LED lighting apparatus can be performed easily from the outside.

1 is a schematic front view of an LED lighting device according to a first embodiment of the present invention. It is the II-II sectional view (longitudinal section) schematic of FIG. It is a perspective fragmentary view of the said LED lighting apparatus (FIG. 1). FIG. 4 is a schematic cross-sectional view (cross section) taken along the line IV-IV in FIG. 1. FIG. 5 is a schematic cross-sectional view of an LED lighting device according to a second embodiment of the present invention, corresponding to FIG. 4 of the first embodiment. FIG. 5 is a schematic cross-sectional view of an LED lighting device according to a third embodiment of the present invention, corresponding to FIG. 4 of the first embodiment. In the LED lighting device with a rotation mechanism according to the fourth embodiment of the present invention, it is a schematic front partial view showing a first example of a rotation mechanism. It is a VIII-VIII line arrow directional view of FIG. FIG. 10 is an exploded view showing a second example of the rotation mechanism in the LED illumination device with a rotation mechanism according to the fourth embodiment of the present invention. FIG. 10 is a view taken along the line X-X in FIG. 9. FIG. 11 is a schematic front partial view showing a third example of the rotation mechanism in the LED lighting device with a rotation mechanism according to the fourth embodiment of the present invention. It is a longitudinal cross-sectional schematic partial figure of the said rotation mechanism (FIG. 11). It is a whole perspective view of the nozzle | cap | die part which comprises the said rotation mechanism (FIG. 11). It is a figure for demonstrating the usage method of the LED lighting apparatus with a rotation mechanism. It is a figure for demonstrating the usage method of the LED lighting apparatus with a rotation mechanism. FIG. 6 is a perspective partial view of an LED lighting device according to a fifth embodiment of the present invention. It is a cross-sectional schematic of the said LED illuminating device (FIG. 16). It is a cross-sectional schematic block diagram of the LED lighting apparatus by the 6th Example of this invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
[First embodiment]
1 to 4 show an LED lighting device according to a first embodiment of the present invention.
As shown in FIGS. 1 and 2, the LED illumination device 1 includes a cylindrical illumination tube 2 extending in the longitudinal direction, and a base portion 3 provided at both ends thereof. The external structure of the LED lighting device 1 is almost the same as that of a conventional fluorescent tube, and can be replaced with a conventional fluorescent tube.

  The illumination tube 2 is a translucent member made of, for example, resin or glass, and a translucent material such as milky white is used here, for example. A small-diameter hole 2h is formed through one end of the illumination tube 2 (see FIG. 3). Since the illumination tube 2 does not need to be filled with gas unlike a conventional fluorescent tube, an airtight structure is not required.

  The base part 3 has a pair of pin terminals (electrodes) 30 that are detachably connected to an external socket part (not shown). The socket part is installed on, for example, an indoor ceiling or wall surface, or a panel of an apparatus or a control panel.

  A substrate 10 extending in the longitudinal direction is disposed inside the illumination tube 2, and the substrate 10 is fixed to the illumination tube 2. As shown in FIG. 4, for example, both ends in the width direction of the substrate 10 are supported by support portions 2 s provided inside the illumination tube 2 and extending in the longitudinal direction.

  On the substrate 10, a plurality of LED light emitting elements 11 and 12 are mounted. The LED light emitting element 11 is for external viewing, and the LED light emitting element 12 is for illumination.

  The LED light emitting element 11 for external visual recognition is disposed on one end side of the substrate 10 and is disposed to face the hole 2h of the illumination tube 2. As a result, as shown in FIG. 4, the light L emitted from the LED light-emitting element 11 for external viewing is directly irradiated to the outside through the hole 2 h of the illumination tube 2. In this sense, the hole 2h functions as a visual recognition part for allowing the light emitted from the LED light-emitting element 11 for external visual recognition to be externally visible. On the other hand, a plurality of LED light emitting elements 12 for illumination are arranged at predetermined intervals on the side of the LED light emitting elements 11 for external viewing. Each LED light emitting element 11, 12 is electrically connected to each pin terminal 30 via, for example, a lead wire or a connector (not shown).

  Here, the case where each LED light emitting element 11 and 12 is comprised from the LED light emitting element of the same color is taken as an example. For example, each LED light emitting element 11 and 12 is comprised from the blue light emitting diode. In this case, for example, if a phosphor that emits yellow fluorescence when excited by blue light is provided only on the LED light emitting element 12 for illumination, blue light and fluorescence from the LED light emitting element 12 for illumination are provided. The yellow light from the body is mixed to obtain white outgoing light. On the other hand, the emitted light from the LED light emitting element 11 for external visual recognition is blue.

  In the LED illumination device 1 configured as described above, the light (white light) from the LED light emitting element 12 for illumination and the phosphor is diffused by the illumination tube 2 and irradiated to the outside. Further, light (blue light) L from the LED light emitting element 11 for external viewing is emitted to the outside through the hole 2h of the illumination tube 2 (see FIG. 4).

  At this time, the user can visually recognize from the outside that the emitted light from the LED light emitting element 11 for external visual recognition is the LED emitted light through the hole 2h of the illumination tube 2, whereby the illumination device is connected to the LED light emitting element. It can be easily visually recognized from the outside that it is an LED lighting device with a built-in LED. In this case, since the hole 2h as a visual recognition part is provided in the illumination tube 2, the visual recognition that it is an LED illumination device can be easily performed from the outside.

  In this case, since all the LED light emitting elements 11 and 12 accommodated in the illumination tube 2 are composed of the same color, it is not necessary to prepare LED light emitting elements of different colors, and there is no risk of misassembly. Assembly / inspection costs can be reduced. In this case, by using the phosphor, different colors can be emitted between the external visual LED light emitting element 11 and the illumination LED light emitting element 12 using the LED light emitting elements of the same color.

[Second Embodiment]
FIG. 5 shows an LED lighting device according to a second embodiment of the present invention. In the figure, the same reference numerals as those in the first embodiment denote the same or corresponding parts.

  The second embodiment is different from the first embodiment in that a light guide (light guide means) 2g is provided in the opening of the hole 2h inside the illumination tube 2. The light guide 2g is, for example, a resin plate-shaped or cylindrical member. In this case, the emitted light L from the externally visible LED light emitting element 11 travels through the light guide 2g and is guided to the opening of the hole 2h, and is emitted to the outside from the opening of the hole 2h.

  According to the second embodiment, the light guide 2g can reliably guide the emitted light from the LED light emitting element 11 for external visual recognition to the hole 2h as the visual recognition part, and the visual recognition of the LED emitted light by the visual recognition part. Is even easier.

[Third embodiment]
FIG. 6 shows an LED lighting device according to a third embodiment of the present invention. In the figure, the same reference numerals as those in the first embodiment denote the same or corresponding parts.

  In the third embodiment, the light guide (light guide means) 2i is provided between the LED light emitting element 11 for external visual recognition and the hole 2h inside the illumination tube 2 in the first tube. It is different from the embodiment. The light guide 2i is a light-transmitting columnar member made of, for example, resin, and emits light from the LED light emitting element 11 for external visual recognition in the optical axis direction of the LED light emitting element 11 for external visual recognition. It has directivity to converge and align. That is, in the third embodiment, the light emitted from the LED light emitting element 11 for external viewing through the inside of the light guide 2i has a narrow directivity (high directivity).

  In this case, the outgoing light L from the LED light emitting element 11 for external viewing is converged and guided to the opening of the hole 2h while traveling through the light guide 2i, and is emitted to the outside from the opening of the hole 2h. The

  According to the third embodiment, the light guide 2i can reliably guide the emitted light from the LED light emitting element 11 for external viewing to the hole 2h as the viewing portion, and the light guide 2i itself emits light. In combination with this, the visual recognition of the LED emitted light by the visual recognition unit is further facilitated.

  In addition, in this case, since the light guide 2i has directivity, the optical axis direction of the LED light emitting element 11 for external visual recognition is made to coincide with the visual recognition part, thereby allowing the optical axis direction to pass through the visual recognition part. Thus, the direction of light emitted from the LED light emitting element 12 for illumination (that is, the irradiation direction) can be clearly confirmed.

[Fourth embodiment]
In the first to third embodiments, the example in which the base portion 3 is fixed to the end portion of the lighting tube 2 is shown. However, the application of the present invention is not limited to this, and the lighting tube 2 and the base portion are applied. The part 3 may be provided so that relative rotation is possible. 7 to 15 show an LED lighting device with a rotation mechanism according to a fourth embodiment of the present invention. In these drawings, FIGS. 7 and 8 are a first example of a rotating mechanism, FIGS. 9 and 10 are a second example of a rotating mechanism, and FIGS. 11 to 13 are a third example of a rotating mechanism, respectively. FIG. 14 and FIG. 15 are diagrams for explaining how to use the LED lighting device with a rotation mechanism. In these drawings, the same reference numerals indicate the same or corresponding parts. Each rotating mechanism shown in the fourth embodiment is an example of a rotating mechanism, and various other mechanisms can be considered.

<First example of rotating mechanism>
As shown in FIG. 7, the end portion of the illuminating tube 2 has a base portion 20, and a base portion 3 is provided on the outside thereof adjacent to the base portion 20.

  As shown in FIG. 8, a plurality of teeth 20 a are formed on the end surface of the base 20 in a region extending in an annular shape along the outer periphery thereof. A hole 21 is formed in the center of the end surface of the base 20.

  On the end face of the base 3, a plurality of teeth 3 a that mesh with the teeth 20 a are formed in an annular region facing the teeth 20 a of the base 20. One end of the shaft portion 31 is planted in the center of the end surface of the base portion 3, and the other end of the shaft portion 31 extends into a hole 21 formed in the base portion 20. Centering (centering) of the base portion 3 with respect to the base portion 20 is performed by the shaft portion 31 and the hole 21.

  In this case, when the base part 3 and the base part 20 are moved in the axial direction toward the side away from each other, the meshed state of the teeth 3a, 20a of the base part 3 and the base part 20 is released, and thereby the lighting tube 2 Is placed in a state in which it can rotate around the axis with respect to the base 3.

  From this state, after rotating the illuminating tube 2 by a desired amount, the base 3 and the base 20 are moved again in the axial direction toward the sides approaching each other, whereby each tooth 3a, 20a of the base 3 and the base 20 is obtained. Is put in mesh again.

  Thus, the irradiation direction of the LED light emitting element 12 for illumination can be changed to a desired direction, and a light distribution characteristic can be changed. At this time, since the illumination tube 2 is provided with the hole 2h as the visual recognition portion, even when the illumination tube 2 is rotated, it can be easily recognized from the outside that the LED illumination device is provided.

  In this case, when the light guide 2g according to the second embodiment is provided inside the illumination tube 2, as shown in FIG. 14, the LED light emission for external visual recognition is provided by the light guide 2g. Since the emitted light from the element 11 can be reliably guided to the hole 2h as the visual recognition part, even when the illumination tube 2 is rotated, the visual recognition of the LED emitted light by the visual recognition part can be easily performed (this point will be described later). The same applies to the second and third examples of rotating mechanisms that perform the same).

  In this case, when the light guide 2i according to the third embodiment is provided inside the illumination tube 2, the light guide 2i has directivity as shown in FIG. In combination with this, the emitted light from the LED light emitting element 11 for external visual recognition can be more reliably guided to the visual recognition part. That is, in this case, the optical axis direction of the LED light emitting element 11 for external viewing can be matched with the viewing portion. Thereby, even when the illumination tube 2 is rotated, the LED emission light can be more easily visually recognized by the visual recognition unit, and from the LED light emitting element for illumination through the optical axis direction of the LED light emitting element 11 for external visual recognition. The direction of the emitted light (that is, the irradiation direction) can be clearly confirmed (this also applies to the second and third examples of the rotation mechanism described later).

  At the time of use, as shown in FIG. 15, the user looks at the inside of the illumination tube through the visual recognition part, and determines the optical axis direction of LED light emitting element 11 for external visual recognition (the direction of dashed line L in the figure). By aligning with the desired direction, the optical axis direction (irradiation direction) of the LED light emitting element 12 for illumination can be directed to the direction desired by the user.

  Note that the engagement between the base portion 3 and the base portion 20 is not limited to the gear engagement described above. For example, a ratchet wheel (claw wheel) may be provided on the base part 20 (or the base part 3), and a pole (claw) engaged therewith may be provided on the base part 3 (or the base part 20).

<Second example of rotation mechanism>
As shown in FIG. 9, the end portion of the illuminating tube 2 has a base portion 20, and the base portion 3 is attached to the outer periphery thereof.

  The end surface 20b of the base 20 is formed with a plurality of holes 22 arranged at predetermined intervals on the circumference. Each of the holes 22 has a retractable ball 23 and a compression that biases the ball 23 in a protruding direction. A coil spring 24 is accommodated. The ball 23 is always urged in a direction in which a part thereof protrudes from the opening end of the hole 22 by the elastic repulsive force of the compression coil spring 24. A circumferential groove 20 c is formed on the outer periphery of the base 20.

  A plurality of shallow spherical holes 32 (or conical shapes) are formed at predetermined intervals on the circumference of the end surface 3c of the base portion 3 that faces the end surface 20b of the base portion 20. The distance between the holes 32 corresponds to the distance between the holes 22 on the base 20 side, and the balls 23 are detachably engaged with the holes 32. Further, a part of the outer peripheral edge portion of the base portion 3 extends thinly toward the base portion 20 side, and a hook that is bent radially inward at the tip of the extended portion 33. A portion 33a is formed. When the hook portion 33 a engages with the circumferential groove 20 c of the base portion 20, the base portion 3 is detachably attached to the base portion 20.

  In this case, the illuminating tube 2 is rotated by a desired amount while the base portion 3 is mounted on the base 20. Then, the base 20 also rotates together with the illumination tube 2, and at this time, the balls 23 on the side of the base 20 engaged with the holes 32 of the base part 3 are detached from the holes 32 and rotated together with the base 20, After the illumination tube 2 rotates by a desired amount, each ball 23 engages with each corresponding hole 32.

  Thus, the irradiation direction of the LED light emitting element 12 for illumination can be changed to a desired direction, and a light distribution characteristic can be changed. At this time, since the illumination tube 2 is provided with the hole 2h as the visual recognition portion, even when the illumination tube 2 is rotated, it can be easily recognized from the outside that the LED illumination device is provided.

  In contrast to the examples shown in FIGS. 9 and 10, the ball may be provided so as to be able to appear and retract on the base portion 3 side, and a hole with which the ball is engaged may be formed on the base portion 20 side.

  Further, the electrical connection between the LED light emitting elements 11 and 12 and the pin terminal 30 is not limited to a lead wire or the like, and a conductive shaft portion and a brush connected thereto may be used, or an electromagnetic latch-type contact May be used.

<Third example of rotating mechanism>
As shown in FIGS. 11 and 12, the base portion 20 of the lighting tube 2 includes a cylindrical outer peripheral portion having a plurality of through holes 2g arranged on the circumference at predetermined intervals, and an axial direction from the center of the outer peripheral portion. A shaft portion 25 that protrudes and has an engaging protrusion 25a at the tip is provided.

  As shown in FIGS. 12 and 13, the base portion 3 is a bottomed cylindrical member, and a cut 3 s extending in the axial direction is provided at a position away from the axial center on the end surface facing the base portion 20. Is formed. A pair of protrusions 3g and operation buttons 3h are provided on the outer peripheral surface of the thin portion 3S partitioned by the cuts 3s. Each protrusion 3g can be engaged and disengaged in each through-hole 2g of the base 20 removably. In addition, the base part 3 has a hole 35 in the center, and an engagement recess 35 a is formed in a part of the hole 35. When the base part 3 is mounted on the base part 20 of the lighting tube 2, the shaft part 25 of the base part 20 is inserted into the hole 35 of the base part 3, and the engagement protrusion 25 a at the tip of the shaft part 25 is the hole of the base part 3. It engages with an engaging recess 35a in 35 so as to be freely disengaged.

  In this case, when the operation button 3h is pushed in the direction of arrow F in FIG. 12 in a state where the projections 3g of the base part 3 are engaged in the through holes 2g of the base part 20, the thin part 3S of the base part 3 is obtained. Is elastically deformed and bends downward. As a result, each projection 3g is disengaged from the through hole 2g and the engaged state is released.

  From this state, the illumination tube 2 together with the base 20 is rotated around the base 3 by a desired amount. Then, after the illumination tube 2 is rotated by a desired amount, when the finger is released from the operation button 3h, the elastically deformed thin-walled portion 3S returns to its original state, and each projection 3g of the base portion 3 becomes a through hole of the base portion 20. Engage with 2g.

  Thus, the irradiation direction of the LED light emitting element 12 for illumination can be changed to a desired direction, and a light distribution characteristic can be changed. At this time, since the illumination tube 2 is provided with the hole 2h as the visual recognition portion, even when the illumination tube 2 is rotated, it can be easily recognized from the outside that the LED illumination device is provided.

[Fifth embodiment]
In the first to fourth embodiments, the small diameter hole 2h has been described as an example of the visual recognition portion provided in the illumination tube 2, but the application of the present invention is not limited to this. 16 and 17 show an LED lighting device according to a fifth embodiment of the present invention. In these drawings, the same reference numerals as those in the first to fourth embodiments denote the same or corresponding parts.

  As shown in FIGS. 16 and 17, the illumination tube 2 has a slit 2h 'extending in the circumferential direction on one end side. The slit 2h 'is disposed to face the LED light emitting element 11 for external visual recognition. A lens 15 is arranged above the LED light emitting element 11 for external visual recognition. The lens 15 is a lens having a cylindrical curved surface (cylindrical surface), and is used to emit light from the LED light emitting element 11 for external visual recognition linearly along the slit 2 h ′.

  In this case, the light L emitted from the LED light emitting element 11 for external visual recognition is converged by the lens 15 and emitted to the outside through the slit 2h 'of the illumination tube 2 (see FIG. 17). When the emitted light is viewed from the outside, it appears to emit light linearly as shown in FIG.

  At this time, the user can visually recognize from the outside that the emitted light from the LED light emitting element 11 for external visual recognition is the LED emitted light through the slit 2h ′ of the illumination tube 2, whereby the illumination device emits LED light. It can be easily visually recognized from the outside that the LED lighting device incorporates the element. In this case, since the illumination tube 2 is provided with the slit 2h 'as a visual recognition part, visual recognition of the LED illumination device can be easily performed from the outside.

[Sixth embodiment]
FIG. 18 shows an LED lighting device according to a sixth embodiment of the present invention. In the figure, the same reference numerals as those in the first to fifth embodiments denote the same or corresponding parts. As shown in FIG. 18, the illuminating tube 2 is attached in a recess Wa formed in the ceiling W, and a cover 5 is provided below the illuminating tube 2. The cover 5 is an opaque member such as milky white. Here, the illumination tube 2 is the illumination tube 2 according to the third embodiment, and a light guide 2 i is provided inside the illumination tube 2.

  The emitted light L from the LED light emitting element 11 for external viewing is converged while traveling through the light guide 2i, passes through the opening of the hole 2h, and is irradiated onto the cover 5.

  In this case, the light emitted from the LED light emitting element 11 for external viewing is condensed on the cover 5 due to the convergence effect of the light guide 2i. It can be visually recognized from the outside that the emitted light from the LED light emitting element 11 is the LED emitted light, and thereby, it can be easily visually recognized from the outside that the illumination device is an LED illumination device incorporating the LED light emitting element.

[Other Examples]
In each of the above embodiments, a straight tube type linearly extending in the longitudinal direction as an illumination tube has been described as an example, but the application of the present invention is not limited to this, and the illumination tube includes a curved shape, A bent shape such as a V shape or a W shape may be used, or a valve shape may be used. Moreover, the single-piece | die metal-type illumination tube which has arrange | positioned a nozzle | cap | die part only to the end of an illumination tube may be sufficient.

  The present invention is suitable for an LED illumination device used for general illumination, and is particularly suitable for an LED illumination device with a rotation mechanism provided with a rotation mechanism capable of changing the irradiation direction.

1: LED lighting device

2: Lighting tube 2g: Light guide (light guide means)
2h: Hole (viewing part)
2i: Light guide (light guide means)

3: Cap part 30: Pin terminal (electrode)

11: LED light emitting element for external visual recognition 12: LED light emitting element for illumination

Japanese Patent Laying-Open No. 2007-257928 (see FIGS. 1 and 2) JP 2007-122933 A (see FIGS. 1 to 3)

Claims (5)

An LED lighting device,
A plurality of LED light emitting elements including an LED light emitting element for external viewing and an LED light emitting element for illumination;
A translucent illumination tube containing the plurality of LED light emitting elements;
A visual recognition unit provided in a part of the illumination tube and transmitting the emitted light from the LED light emitting element for external visual recognition to the outside ;
A light guide means provided inside the illumination tube, for guiding emitted light from the LED light emitting element for external viewing to the viewing portion;
LED lighting device provided with. In claim 1,
The visual recognition part passes through a hole formed through the illumination tube at a position facing the LED light emitting element for external visual recognition, or a position facing the LED light emitting element for external visual recognition, and the circumference of the illumination tube A slit extending in the circumferential direction along the surface and penetratingly formed in the lighting tube,
LED lighting device characterized by the above. In claim 1 or 2,
The end portion of the illumination tube is provided with a base portion having an electrode detachably connected to an external socket portion at one end, and the illumination tube and the base portion are provided so as to be relatively rotatable.
LED lighting device characterized by the above. In any of claims 1 to 3 ,
The light guide means has directivity to orient the emitted light from the externally visible LED light emitting element in the optical axis direction of the externally visible LED light emitting element;
LED lighting device characterized by the above. In claim 1,
The LED light emitting element for external visual recognition is composed of LED light emitting elements of the same color as the LED light emitting element for illumination,
LED lighting device characterized by the above.

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